Report of the Committee on Committee Scope: This Committee shall have primary responsibility for documents or portions of documents on Manufactured Housing administrative provisiorm and planning requirements for manufactured homes to assure the adequacy of architectural Technical Correlating Committee (MAN-AAC) planning considerations and documentation of compliance for a safe and healthy environment for the occupants of a manufactured home. David Hilton Goins, Chair North Carolina Dept. of Insurance, NC [El Technical Committee on Walter P. Sterling, Nonvoting Secretary Electrical for Manufactured Housing (MAN-ELE) Nat'l Fire Protection Assn., MA Robert A. McCullough, Chair Gerald W. Bell, Nat'l Assn. of Independent Insurers, IL [I] Ocean County Construction Inspection Dept., NJ [El Bill Farish, Fleetwood Homes, CA [M] Rep. Int'l Assn. of Electrical Inspectors William Freeborne, U.S. Dept. of Housing and Urban Development, DC [El Jeffrey S. Sargent, Nonvoting Secretary Danny D. Ghorbani, Assn. for Regulatory Reform, DC [M] Nat'l FireProtection Assn., MA Martin C. Gilchrist, Urban Research & Development Corp., PA [SE] Mike Marl, Nat'l Conference of States on Bldg. Codes & Standards, Thomas R. Brandt, Fairmont Homes Inc., 1N [M] VA tEl C. Edgar Bryant, Champion Enterprises, Inc., MI [M] John Pabian, Underwriters Laboratories Inc., IL [RT] Daniel J. Kissane, Pass & Seymour Legrand, NY [M] Janet Potter, Nat'l Foundation of Manufactured Home Owners, Robert L. LaRocca, Underwriters Laboratories Inc., NY [RT] NC [C] Robert E. Moore, TECO Energy, FL [U] Michael J. Slifka, PFS Corp., WI [RT] Rep. Edison Electric Inst. Frank Walter, Manufactured Housing Inst., VA [M] Clifford L. Rediger, Independent Electrical Contractors Training Fund, CO [IM] Alternates Rep. Independent Electrical Contractors Frank Whittaker, Jr., City of Roanoke, VA [E] Deborah J. Chapman, Nat'l Foundation of Manufactured Home Michael L. Zieman, RADCO, CA [RT] Owners, PA [C] (Alt. to J. Potter) Alternate David A. Otto, Underwriters Laboratories Inc., IL [RT] (Ah. to J. Pabian) David IL Keller, Champion Enterprises, Inc., MI [M] John R. Stevens, U.S. Dept. of Housing and Urban Development, (Alt. to C. E. Bryant) DC [E] (Alt. to W. l~reeborne) Committee Scope: This Committee shall have primary responsibility for documents or portions of documents on Nonvoting electrical conductors and electrical equipment installed within or on manufactured homes to provide a safe and healthy environment ohn Lake, Marion County Fire/Rescue, FL, Chair MAN-FIR for the occupants of a manufactured home. atrick Lewis, Oregon Bldg. Codes Division, OR, Chair MAN-PLU Robert A. McCullough, Ocean County Construction Inspection Dept., NJ, Technical Committee on Chair MAN-ELE Jerry L. McHale, Federation of Manufactured Home Owners of Fire Safety for Manufactured Housing (MAN-FIR) Florida, Inc., FL, Chair MAN-ADM John Lake, Chair Raymond F. Tucker, RADCO, CA, Chair MAN-STR Marion County Fire/Rescue, FL [El Michael L. Zieman, RADCO, CA, Chair MAN-MEG Walter P. Sterling, Nonvoting Secretar3 Committee Scope: This Correlating Committee shall have Nat'l Fire Protection AssrL, MA primary responsibility for documents or portions of documents that provide a safe and healthy environment for the occupant of a Lawrence Brown, Nat'l Assn. of Home Builders, DC [U] manufactured home. Gene B. Endthoff, Nat'l Fire Sprinkler Assn., IL [M] William M. Hug, Cavco Industries, LLC, AZ [M] Technical Committee on Lewis Boyd Lee, South Caroling State Fire Marshal's Office, SC [El Rep. Int'l Fire Marshals Assn. Administration for Manufactured Housing (MAN-ADM) M. L. aI.arry~ Maruskin, Federal Emergency Mgmt. Agency, MD [C] Dennis L. Pitts, American Forest & Paper Assn., TX [M] Jerry L. McHale, Chair James v. Ryan, Potomac, MD [SE] Federation of Manufactured Home Owners Michael J. Sliflm, PFS Corp., WI [RT] of Florida, Inc., FL [C] Eric Staniak, State Farm Fire & Casualty, IL Ill Randy E. Vogt, Minnesota Bldg. Codes and Standards Division, Walter P. Sterfing, Nonvoting Secretary MN [El Nat'l Fire Protection Assn., MA Richard Weinert, California Dept. of Housing and Community Development, CA [El Danny G. Ghorbani, Assn. for Regulatory Reform, DC [M] A. Elwood Willey, FIREPRO Inc., MA [SE] Martin C. Gilchrist, Urban Research & Development Corp., PA [SE] David Hilton Goins, North Carolina Dept. of Insurance, NC [E] Alternates Doug Gorman, Home-Mart, Inc., OK [M] Rep. Manufactured Housing Assn. of Oklahoma Miles J. Haber, Monument Construction Inc., MD [U] Jeffrey T. Inks, Nat'! Assn. of Home Builders, DC [U] (Alt. to L. Brown) Dana C. Roberts, Oregon Bldg. Codes Division, OR, [E] Jim McGowan, California Dept. of Housing and Community Rep. Council of State Administrative Agencies Development, CA [El Raymond F. Tucker, RADCO, CA [RT] (Alt. to R. Weinert) Jeffrey B. Stone, American Forest & Paper Assn., FL [M] Alternates (Alt. to D. L. Pitts) Jerry A. Walker, Gypsum Assn., DC [M] Lawrence Brown, Nat'l Assn. of Home Builders, DC [U] (Voting Alt. to Gypsum Assn. Pep.) (Alt. toJ. T. Inks) Michael L. Zieman, RADCO, CA [RT] (Air. to IL F. Tucker)

517 NFPA 501 m MAY 2000 ROP

Committee Scope: This Committee shall have primary Technical Committee on responsibility for documents or portions of documents on fire safety to the occupants of a manufactured home. Structural for Manufactured Housing (MAN-STR) Raymond F. Tucker, Chair Technical Committee on RADCO, CA [RT]

Mechanical for Manufactured Housing (MAN-MEC) Walter P. Sterling, Nonvoting Secretary Nat'l Fire Protection Assn., MA Michael L. Zieman, Chair RADCO, CA [RT] Peter H. Billing, Inst. for Business & Home Safety, MA [I] John G. Bradrleld, Composite Panel Assn., MD [U] - Gregory E. Harrington, Nonvoting Secretary C. Edgar Bryant, Champion Enterprises, Inc., MI [M] Nat'l Fire Protection Assn., MA Michael A~ Kinard, Kinro Inc., TX [M] Patrick Lewis, Oregon Bldg. Codes Division, OR [E] Michael D. Blegen, Oregon Dept: of Consumer and Business Mike Marl, Nat'l Conference of States on Bldg. Codes & Standards, Services, OR [E] VA [El Larry Boyce, NORDYNE, MO [M] ~i. abian, Underwriters Laboratories Inc., IL [RT] Donald E. Dockray, Southern California Gas Co., CA [U] Patel, Maryland Codes Administration, MD [E] John M. Halliwill, Int'l Assn. of Plumbing & Mechanical Officials, edffrey B. Stone, American Forest & Paper Assn., FL [M] CA [E] Sutton, Nat'l Assn. of Home Builders, DC [U] Jordan Heiman, Jordan L. Heiman Inc., MO [SE] John W. Weldy, NTA Inc., IN [RT] Michael Lubliner, Washington State University Energy Program, Robert J. Wills, American Iron & Steel Inst., AL [M] WA [U] Rep. Northwest Energy Efficiency Alliance Alternates ohn Mikel, Skyline Corp., IN [M] ohn Pabian, Underwriters Laboratories Inc., IL [RT] James A. Jones, Crest Homes, IN [U] Iohn R. Stevens, U.S. Dept. of Housing and Urban Development, (Alt. to E. Sutton) DC [E] Dennis L. Pitts, American Forest & Paper Assn., TX [U] Elbert D. Stillwaggon, Weaver Gas, NY [IM] (Alt. to J. B. Stone) Rep. Nat'l Propane Gas Assn. Patrick Zeeveld, Underwriters Laboratories Inc., IL [RT] Frank Walter, Manufactured Housing Inst., VA [M] (Alt. to J. Pabian) Alternate Committee Scope: This Committee shall have primary responsibility for documents or portions of documents on Robert D. Haden, Blossman Gas, Inc., AL [IM] materials, products, equipment and workmanship and testing (Alt. to E. D. Stillwaggon) needed to ensure that there is a safe and healthy environment for the occupant of a manufactured home. The Committee shall also Committee Scope: This Committee shall have primary have the responsibility associated with the general requirements for responsibility for documents or portions of documents on designing the structure to fully withstand the adverse effects of condensation control; air infiltration; thermal insulation; transportation shock and vibration on a manufactured home. certification for heating and comfort cooling; and heating, cooling, and fuel-burning equipment that is installed within, on, These lists represent the membership at the time the Committee was or external to a manufactured home. balloted on the text of this edition. Since that time, changes in the membership may have occurred. A key to classifications is found at the front of this book. Technical Committee on The Committee on Manufactured Housing is presenting two Plumbing for Manufactured Housing (MAN-PLU) Reports for adoption, as follows:

Patrick Lewis, Chair Report I: The Committee on Manufactured Housing proposes Oregon Bldg. Codes Division, OR [E] for adoption amendments to NFPA 501-1999, Standard on Manufactured Housing. Theodore C. Lemoff, Nonvoting Secretary Nat'l Fire Protection Assn., MA This Report was prepared by the: • Technical Correlating Committee on Manufactured Housing Marguerite E. Carroll, Underwriters Laboratories Inc., CA [RT] (MAN-AAC) Michael Gillespie, Plastic Pipe & Fittings Assn., OH [M] • Technical Committee on Administration for Manufactured John M. Halliwill, Int'l Assn. of Plumbing & Mechanical Officials, Housing (MAN-ADM) CA [E] • Technical Committee on Electrical for Manufactured Housing William C. Masters, Homes of Merit, Inc., FL [M] (MAN-ELE) James R. Paschal, NSF International, MI [RT] • Technical Committee on Fire Safety for Manufactured Housing (MAN-FIR) Alternate • Technical Committee on Mechanical for Manufactured Housing (MAN-MEC) Perry W. Meikle, Underwriters Laboratories Inc., CA [RT] • Technical Committee on Plumbing for Manufactured Housing (Alt. to M. E. Carroll) (MAN-PLU) * Technical Committee on Structural for Manufactured Housing Committee Scope: This Committee shall have primary (MAN-STR) responsibility for documents or portions of documents on plumbing systems that provide a safe and healthy environment for NFPA 501 has been submitted to letter ballot of the individual the occupants of a manufactured home. Technical Committees. The results of the balloting, after circulation of any negative votes, can be found in the report.

818 NFPA 501 ~ MAY 2000 ROP

NFPA 501 has also been submitted to letter ballot of the What about the quality of their (the system) performance? What Technical Correlating Committee on Manufactured Housing about the structural aspects of the home following transportation? which consists of 11 voting members; of whom 7 voted Isn't this critical? affirmatively, 1 negatively after circulation of any negative ballots If the manufacturer has no records relative to latent damage, how (Ms. Potter), 1 abstained (Mr. Ghorbanl), and 2 ballots were not does one assume that none occurred? The 'honor system'? returned (Messrs. Gilchrist and Goins). Simply because the manufacturer provides a statement to that effect, we are all to believe it is true? Absolutely notl We oppose Ms. Potter voted negatively stating: this 'Fox in Hen House Approach' to solving safety and health "Proposal 501-211 (10-1 [3280.901]): Committee Accepted; risks of American citizens. Submitter: Frank Walter, MHI. Proposals 501-214 (Log #115), 501-215 (Log #103), 501-216 (Log The National Foundation of Manufactured Home Owners, Inc. #185), 501-217 (Log #117), 501-218 (Log #172), and 501-219 (Log (NFMHO) strongly opposes the specific language in Proposal 501- #104): 211 (Log #100) -' the integrated structure or of its component parts' - Further, the Committee's 'Substantiation' - (in 501-215), taken out. 'Committee Statement' - (501-215), and 'Submitted Significant damage is often rendered to the structural integrity of Recommendation' (NFPA 501/Log 103 Rec/May 9000 ROP/Pg 1) a home as a direct result of problems arising during transportation - (501-214, 215, 216, 217, 918, 219); some of which was rejected, from the factory, to the dealer's lot, or to the site where the home but the majority was either 'Accepted' or 'Accepted in Part.' is to be placed. Many times the damage is not visible or apparent First of all, what is the: "recycled program proposed'? The NFMHO at the time of delivery of the home. Consumer problems arise has never seen or read anything on a proposal for a ' recycling later. program'l An example would be a crack in a roof truss, resulting from I reiterate once againl: The intention of CONGRESS was that the hitting a 'pot hole' on an interstate highway when the truck transt~ortation assembly, includine the running gear asser~bl3, transporting the home was being driven at an excessive rate of ~cludinf the wheels and axlea, etc.. etc.. etc - speed. (Exceeding that allowed in the HUD Code and perhaps 'were..to..be..an..intertrated..tmrt..of..the..lwrae - For the life of the home: the posted speed for thatparticular highway.) Now, if this indus~y warits to laave preemption, then they have to The NFMHO disagrees that it is 'meaningless to indicate that the play by the 'rules of the law' that Congress set up for us. In short, home shall withstand the effects of transportation without you cannot simply 'erase' a legislated lawll If they want to build degradation.' While it may be true that it is sometimes difficult to 'modular housing' they should build 'modular housing,' this is precisely measure the specific amount of degradation to the home Manufactured Housing, quite different, and enjoys a much resulting from a problem which occurred during transportation, different status, pertaining to Federal Preemption over local that does not mean that because something is difficult, we should building codesl This isn't hard to understandl all forget about it and eliminate the requirement. That defies Therefore, the NFMHO opposes the removal of the following Iogicl Obviously, how precisely one can measure specific language in any part of the above sections: degradation to a home by observation of the home immediately (10-4.1) "entire...(f.rame, drawbar and coupling mechanism, running following delivery is dependent in large on: (1) the damage that gear assemMy, and lights," 'balanced and durable,' 'during the intended occurred; (2) how readily that type of damage is apparent or life of the manufactured home,' 'supporting the manufactured home and checked for; and (:3) the competency of the individual inspecting iis contents,' 'braking while traveling at applicable' the home for transportation related damage. (10.4.2) 'frame...dther by a continuous weld or by bolting' Many times common sense must come into play in legislation, (10-4.2.2) "With the manufactured home parked on level ground, the rules or regulations, when it comes to defining something. center of the socket of the coupler shall not be less than 20 in. (508 ram) For example: The law (state or federal) may mandate that a or more than 26 in. (660 ram)from (sic) ground leveL' product be 'safe' for consumer use. If one is concerned in (10-4.2.3) 'The integrated design shall be capable of insuring the Proposal 501-211 about not being able to measure 'degradation,' rigidity and structural integrity of the complete manufactured home how does one define 'safe,' with respect to a particular product? structure and ensuring against deformation of, structure or finish Sure there are some conditions one can put in law to help, but members during the intended life of the home. for each and every condition there are exceptions given certain (10-4.2.4) 'As part of the chassis, the running gear assemb~ shall be situations. designed to be performed as a balanced system in order to effectively Because it is difficult to define what is 'safe,' does that mean one sustain the design loads., set forth in 10-4..2 3 and to ~rovide fior durable, should 'forget it' and eliminate the requirement that the product d eP endable, safe• ....mobdity, of the manufactured home. 7 be safe for consumer use? (10-4.2.5) w,thstand, ng...as outlined m lO-4.Z3...frame or By keeping the requirement to be safe, consumers will know by (10-4.2.6) 'withstanding all of the design loads in 10-4.2.3,' 'stresses,' observing the product in actual use, whether or not it is safe to 'life,' 'required,' and 'good ride charaetertstics,' 'be determined and use. documented by engineering analysis. Those alternatives listed in 10-3.3 The same is true for Proposal 501-211. Keep the Reg. written the shall be permitted to be accepted in place of such an analysis." way it is presently. The NFMHO opposes the proposed change in language absolutely. Mr. Ghorbani abstained stating: The NFMHO also takes exception to the last sentence of the "To be safe, I am abstaining on this packet in order to be paragraph entitled 'SUBSTANTIATION.' consistent with my previous votes because of the late entry of a There are accidents all the time with manufactured homes being group of bulk proposals into the packet." transported and resultant damage, especially considering every major highway in America is currently undergoing construction Report I1: The Committee on Manufactured Housing proposes and concrete barriers are in place to narrow the width of driving for adoption amendments to NFPA 501A-1999, Standard for Fire lanes. Safety Criteria for Manufactured Home Installations, Sites, and Proposal 501-213 (Log #102) (10-3 [3280.903]): Committee Communities. Accented in Princinle in Part. The National Foundation of Manufactured Home Owners, Inc. This Report was prepared by the: (NFMHO) strongly opposes the specific removal of language in • Technical Correlating Committee on Manufactured Housing Proposal 501-213: 'entire...(frarae, dra~obar and coupling mechanism, (MAN-AAC) running gear assembly, and lights),' 'balanced and durable,' 'during • Technical Committee on Administration Manufactured the intended life of the manufactured home,' 'supporting the Housing (MAN-ADM) manufactured home and its contents,' 'braking while traveling at • Technical Committee on Electrical Manufactured Housing applicable' (MAN-ELE) Note: By removing this language, we now make the 'systems' only • Technical Committee on Fire Safety Manufactured Housing viable or needed during transportation, while that is not the (MAN-FIR) legislative intent. It is very clear that Congress intended these • Technical Committee on Mechanical Manufactured Housing 'systems' to be ' an integrated part of the home for the life of the (MAN-MEG) ~atlufactured home. not just for transportation purposes. Instead of structural, plumbing, mechanical, and electrical NFPA 501A has been submitted to letter ballot of the individual systems of the home being required to function after Technical Committees. The results of the balloting, after transportation originally designed for their intended life, circulation of any negative votes, can be found in the report. plumbing, mechanical, and electrical systems under the change only need to function after the 'set-up?For how long? 24 hours?

319 NFPA 501 m MAY 2000 ROP

NFPA 501A has also been submitted to letter ballot of the NFPA 501 Technical Correlating Committee on Manufactured Housing which consists of 11 voting members; of whom 9 voted (Log #182) affirmatively, and 2 ballots were not returned (Messrs. Gilchrist Committee: MAN-ADM and Goins). 501- 1- (Entire Document): Accept SUBMITTER: Dick Veenstra, Fleetwood Enterprises I RECOMMENDATION: Check all metric conversions. Most of them were correct, however of the few pages I checked, some of the conversions were way off. Under definition of Manufactured Home, change (24.4 cm) to (244 cm) and (28 m2) to (29.7 m2). Under definition of Limited-Combustible, change (8141 kJ/kg) to (8136 kJ/kg). SUBSTANTIATION: None given. COMMITTEE ACTION: Accept. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 8 VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 8

(Log #184) Committee: MAN-ADM 501- 2 - (Various Sections): Accept in Principle SUBMITTER: John G. Bradfield, Composite Panel Assn. RECOMMENDATION: The CPA proposes that NFPA 501 incorporate the updated standards reference cited by HUD in the Federal Register, pages 58570-58584, on October 30, 1998. Note: Supporting material is available for review at NFPA Headquarters. SUBSTANTIATION: The Composite Panel Association (CPA) would like to submit the proposal above for the 2000 edition of NFPA 501, Standard on Manufactured Housing. The CPA is the North American trade association for the producers of particleboard and medium density fiberboard (MDF). CPA's 38 corporate members, with their 70 plants represent approximately 90 percent of the U.S. and Canadian particleboard and MDF production capacity. I am CPA's representative on the NFPA 501 Manufactured Housing Technical Committee on Structural. The CPA supports the efforts of HUD to update standards referenced by the Manufactured Home Construction and Safety Standards and wishes to extend that effort through its participation. in NFPA. CPA has actively maintained ANSI and ASTM standards for particleboard and MDF to recognize ongoing product improvements. We would like to note that the ANSI A208.1-1993 standard for particleboard referenced by HUD on 10/30/98 was recently updated. Last week ANSI announced the final approval of ANSI A208.1-1999 for Particleboard. An important product improvement aspect of ANSI A208.1-1993 (and 1999) for Particleboard and ANSI A208.2-1994 for MDF (also referenced by HUD on 10/30/98) is that they reference lower emission standards for formaldehyde, an issue that is on NFPA's agenda. The current HUD standard references ANSI A208.1-1989, which has a product limit of 0.3 ppm in a standardized test. ANSI A208.1-1993 lowered the limit to 0.2 ppm for Manufactured Home Decking, the critical particleboard product for NFPA 501. The previous MDF standard (1986) contained no formaldehyde provisions while ANSI A208.2-1994 added a limit of 0.3 ppm in a standardized test. MDF has become a widely used product in manufactured home calbnetry and moldings. COMMITTEE ACTION: Accept in Principle. COMMITTEE STATEMENT: Reference standards applicable to the responsibility of this committee will be reviewed and coordinated for the appropriate edition. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 8 VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 8

320 NFPA 501 -- MAY 2000 ROP

(Log #184a) for the maintenance of these documents. It was noted that the Committee: MAN-FIR Department of Commerce is associated with these documents. 501- 3 - (Various Sections): Accept in Principle The Technical Correlating Committee also requests that the TCC NOTE: The Technical Correlating Committee on Technical Committee give consideration to Mr. Kinard's and Mr. Manufactured Housing (MAN-AAC) directs that a public Wills's comment on their affirmative ballots. comment be submitted in the Correlating Committee's name SUBMITTER: John G. Bradfield, Composite Panel Assn. requesting that the Technical Committee on Fire Safety for RECOMMENDATION: The CPA proposes that NFPA 501 Manufactured Housing (MAN-FIR) review all the reference incorporate the updated standards reference cited by the HUD in documents under their purview for those standards that may the Federal Register, pages 58570-58584, on October 30, 1998. contain proprietary material. If applicable, the Technical Note: Supporting material is available for review at NFPA Committee is directed to identify those engineering or technical Headquarters. portions of the proprietary standard that is required to be met. SUBSTANTIATION: The Composite Panel Association (CPA) SUBMITTER: John G. Bradfield, CompositePanel Assn. would like to submit the proposal above for the 2000 edidon of RECOMMENDATION: The CPA proposes that NFPA 501 NFPA 501, Standard on Manufactured Housing. The CPA is the incorporate the updated standards reference cited by the HUD in North American trade association for the producers of the Federal Register, pages 58570-58584, on October 30, 1998. particleboard and medium density fiberboard (MDF) CPA's 38 Note: Supporting material is available for review at NFPA corporate members, with their 70 plants represent approximately Headquarters. 90 percent of the U.S. and Canadian particleboard and MDF SUBSTANTIATION: The Composite Panel Association (CPA) production capacity. I am CPA's representative on the NFPA 501 would like to submit the proposal above for the 2000 edition of Manufactured Housing Technical Committee on Structural. NFPA 501, Standard on Manufactured Housing. The CPA is the The CPA supports the efforts of HUD to update standards North American trade association for the producers of referenced by the Manufactured Home Construction and Safety particleboard and medium density fiberboard (MDF). CPA's 38 Standards and wishes to extend that effort through its participation corporate members, with their 70 plants represent approximately in NFPA. CPA has actively maintained ANSI and ASTM standards 90 percent of the U.S. and Canadian particleboard and MDF for particleboard and MDF to recognize ongoing product production capacity. I am CPA's representative on the NFPA 501 improvements. We would like to note that the ANSI A208.1-1993 Manufactured Housing Technical Committee on Structural. standard for particleboard referenced by HUD on 10/30/98 was The CPA supports the efforts of HUD to update standards recently updated. Last week ANSI announced the final approval of referenced by the Manufactured Home Construction and Safety ANSI A208.1-1999 for Particleboard. Standards and wishes to extend that effort through its participation An important product improvement aspect of ANSI A208.1-1993 in NFPA. CPA has actively maintained ANSI and ASTM standards (and 1999) for Particleboard and ANSI A208.2-1994 for MDF (also for particleboard and MDF to recognize ongoing product referenced by HUD on 10/30/98) is that they reference lower improvements. We would like to note that the ANSI A208.1-1993 emission standards for formaldehyde, an issue that is on NFPA's standard for particleboard referenced by HUD on 10/30/98 was agenda. The current HUD standard references ANSI A208.1-1989, recently updated. Last week ANSI announced the final approval of which has a product limit of 0.3 ppm in a standardized test. ANSI ANSI A208.1-1999 for Particleboard. A208.1-1993 lowered the limit to 0.2 ppm for Manufactured Home An important product improvement aspect of ANSI A208.1-1993 Decking, the critical particleboard product for NFPA 501. The (and 1999) for Particleboard and ANSI A208.2-1994 for MDF (also previous MDF standard (1986) contained no formaldehyde referenced by HUD on 10/30/98) is that they reference lower provisions while ANSI A208.2-1994 added a limit of 0.3 ppm in a emission standards for formaldehyde, an issue that is on NFPA's standardized test. MDF has become a widely used product in agenda. The current HUD standard references ANSI A208.1-1989, manufactured home caibnetry and moldings. which has a product limit of 0.3 ppm in a standardized test. ANSI COMMITTEE ACTION: Accept in Principle. A208.1-1993 lowered the limit to 0.2 ppm for Manufactured Home AA-30, Specification for Aluminum Structures Construction Decking, the critical particleboard product for NFPA 501. The Manual Series, Section 1, fifth edition, 1986. previous MDF standard (1986) contained no formaldehyde Specifications and Guidelines for Aluminum Structures, provisions while ANSI A208.2-1994 added a limit of 0.3 ppm in a Aluminum Design Manual, 1994. standardized test. MDF has become a widely used product in AAMA/NWWDA 101/I.S.2, Voluntary Specifications for manufactured home caibnetry and moldings. Aluminum, Vinyl (PVC) and Wood Windows and Glass Doors, COMMITTEE ACTION: Accept in Principle. 1997 (replaces AAMA/NWWDA I.S.1, I.S.2, I.S.3, and I.S. 4 ) J The following represents the current edition for the reference AAMA 1701.2, Primary Window and Sliding Glass Door: standards that this committee has responsibility for: Voluntary Standard for Utilization in Manufactured Housing, 1985 ASTM E 162, Standard Test Method for Surface Flammability of edition. Materials Using a Radiant Heat Energy Source, 1994. AAMA 1702.2, Swinging Exterior Passage Doors: Voluntary J-6461, "Development of Mobile Home Fire Test Methods to Standard for Utilization in Manufactured Housing, 1985 edition. Judge the Fire-Safe Performance of Foam Plastic." 1989 AAMA 1704, Voluntary Standard: Egress Window Systems for NFPA 255, Standard Method of Test of Surface Burning Utilization in Manufactured Housing, 1985 edition. Characteristics of Building Materials, 1996 edition. National Design Specifications for Wood Construction, 1997. COMMITTEE STATEMENT: The committee reviewed the AFPA Wood Structural Design Data, 1989, Revised 1992. standards that are under their responsibility. AFPA PS-20-70, Span Tables for Joists and Rafters, 1993. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 14 AFPA Design Values for Joists and Rafters, Americma Softwood VOTE ON COMMITTEE ACTION: Lumber Standard Sizes, 1993. AFFIRMATIVE: 12 AISC-$335, Specification for Structural Steel Buildings Allowable NOT RETURNED: 2 Endthoff, Lee Stress Design and Plastic Design, 1989. AISI-SG 673, Specification for the Design of Cold-Formed Steel Structural Members, 1986 edition, with 1989 Addendum. AITC A 190.1, Wood Products - Structural Glued Laminated (Log #184b) Timber, 1992. Committee: MAN-STR ANSI A 135.4, Basic Hardboard, 1995. 501- 4 - (Various Sections): Accept in Principle ANSI A 135.5, Prefinished Hardboard Paneling, 1995. TCC NOTE: The Technical Correlating Committee on ANSI A 135.6, Hardboard Siding, 1990. Manufactured Housing (MAN-AAC) directs that a public ANSI A 208.1, Wood Particleboard, 1999. comment be submitted in the Correlating Committee's name ANSI Z 34.1, For Certification - Third-Party Certification requesting that the Technical Committee on Strucutral for Program, 1993. Manufactured Housing (MAN-STR) review all the reference ANSI Z 97.1, Safety Performance Specifications and Methods of documents under their purview for those standards that may Test for Safety Glazing Materials Used in Buildings, 1984. contain proprietary material. If applicable, the Technical ANSI Manual for Structural Applications of Steel Cables for Committee is directed to identify those engineering or technical Building, 1975 portions of theproprietary standard that is required to be met. AP&-E 30P, APA Design/Construction Guide, Residential and The Technical Committee is specifically directed to review the Commercial, 1996. APA documents for proprietary material. The Technical APA-H 815E, Design and Fabrication of All-Plywood Be~uns, Committee is also requested to review APA PS-1 and APA PS-2 Supp. 5, 1995. and identify the appropriate organization that is now responsible APA PS-1-99, Voluntary Product Standard, Construction and Industrial Plywood, V99, 1999.

321 NFPA 501 -- MAY 2000 ROP

APA PS-2-96, Performance Standard for Wood-Based Structural (Log #184c) Use Panels, 1996. Committee: MAN-MEC APA-S 8120~ Design and Fabrication of Glued Plywood-Lumber 501- 5 - (Various Sections): Acce~ Beams, Supp. 2, 1996. TCC NOTE: The Technical Correlating Committee on APA-S 81 IN, Design and Fabrication of Plywood Curved Panels, Manufactured Housing (MAN-AAC) directs that a public Supp. 1, 1995. comment be submitted in the Correlating Committee's name APA-U 813L, Design and Fabrication of Plywood Stressed-Skin requesting that the Technical Committee on Mechanical for Panels, Supp. 3, 1996. Manufactured Housing (MAN-MEC) review all the reference APA-U 814H, Design and Fabrication of Plywood Sandwich documents under their purview for those standards that may Panels, Supp. 4, 1993. contain proprietary material. If applicable, the Technical APA-Y 510S, Plywood Design Specification, 1997. Committee is directed to identify those engineering or technical ASCE 7, Minimum Design Loads for Buildings and Other portions of the proprietary standard that is required to be met. Structures, 1988. The Technical Correlating Committee also requests that the ASCE 8, Design of Cold-Formed Stainless Steel Structural Technical Committee give consideration to Mr. Pabin's comments Members, 1991. on his affirmative ballot. ASCE 19, Structural Applications of Steel Cables for Buildings, SUBMITTER: John G. Bradfieid, Composite Panel Assn. 1996. RECOMMENDATION: The CPA proposes that NFPA 501 ASTM C 36, Standard Specification for Gypsum Wallboard, B-95. incorporate the updated standards reference cited by the HUD in ASTM D 781, Standard Test Methods for Puncture and Stiffness the Federal Register, pages 58570=58584, on October 30, 1998. of Paperboard, and Corrugated and Solid Fiberboard, 1973. Note: Supporting material is available for review at NFPA ASTM D 3953, Standard Specification for Strapping, Flat Steel, He~tquarters. and Seals, 1991. SUBSTANTIATION: The Composite Panel Association (CPA) ASTM D 4442, Standard Test Methods for Direct Moisture would like to submit the proposal above for the 2000 edition of Content Measurement of Wood and Wood-Base Materials, 1999. NFPA 501, Standard on Manufactured Housing. The CPA is the ASTM D 4444, Standard Test Methods for Use and Calibration of North American trade association for the producers of Hand-Held Moisture Meters, 1992. particleboard and medium density fiberboard (MDF). CPA's 38 ASTM E 773, Standard Test Methods for Seal Durability of Sealed corporate members, with their 70 plants represent approximately Insulating Glass Units, 1997. 90 percent of the U.S. and Canadian particleboard and MDF ASTM E 774, Standard Specification for Sealed Insulating Glass oduction capacity. I am CPA's representative on the NFPA 501 Units, 1997. ~v~anufactured Housing Technical Committee on Structural. ASTM E 1333, Standard Test Method for Determining The CPA supports the efforts of HUD to update standards Formaldehyde Levels from Wood Products Under Defined Test referenced by the Manufactured Home Construction and Safety Conditions Using a Large Chamber, 1996. Standards and wishes to extend that effort through its participation HPVA SG 96, Structural Design Guide for Hardwood Plywood in NFPA. CPA has actively maintained ANSI and ASTM standards Wall Panels Design Guide for particleboard and MDF to recognize ongoing product HPVA, HP-1, American National Standard for Hardwood and improvements. We would like to note that the ANSI A208.1-1993 Decorative Plywood, 1994. standard for particleboard referenced by HUD on 10/30/98 was NFPA 220, Standard on Types of Building Construction, 1995 recently updated. Last week ANSI announced the final approval of edition. ANSI A208.1-1999 for Particleboard. An important product improvement aspect of ANSI A208.1-1993 (and 1999) for Particleboard and ANSI A208.2-1994 for MDF (also referenced by HUD on 10/30/98) is that they reference lower NER 272. Power Driven Stanles. Nails. and Allied Fasteners for emission standards for formaldehyde, an issue that is on NFPA's agenda. The current HUD standard references ANSI A208.1-1989, use in all Twes of Building Construction. 3/97 which has a product limit of 0.3 ppm in a standardized test. ANSI SJI, Standard Specifications Load Tables and Weight Tables for A208.1-1993 lowered the limit to 0.2 ppm for Manufactured Home Steel Joists and Joist Girders, 40th edition. Decking, the critical particleboard product for NFPA 501. The previous MDF standard (1986) contained no formaldehyde provisions while ANSI A208.2-1994 added a limit of 0.3 ppm in a COMMITTEE STATEMENT: The committee reviewed the standardized test. MDF has become a widely used product in standards that are under their responsibility. manufactured home caibnetry and moldings. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 COMMITTEE ACTION: Accept. VOTE ON COMMITTEE ACTION: The following represents the current edition for the reference AFFIRMATIVE: 13 standards that this committee has responsibility for: COMMENT ON AFFIRMATIVE: AAMA 1503.1, Voluntary Test Method for Thermal Transmittance KINARD: Please update the references on AAMA 1701.2 and and Condensation Resistance of Windows, Doors, and Glazed Wall AAMA 1702.2 to the 1995 edition. Sections, 1988 edition. TUCKER: The list of reference standards is incomplete. The list ANSI C72.1, Electric Storage Water Heaters, 1972. ends with ASTM C36. Numerous other standards where approved ANSI Z 21.1, Household Cooking Gas Appliances, 1996. by the committee. ANSI Z 21.5.1, Gas Clothes Dryers Volume I Type 1 Clothes WILLS: For cold-formed steel design, the proposal shows the Dryers, 1995. following standard as the current edition: AISI-SG(i7~, ANSI Z 21.10.1, Gas Water Heaters, Volume I, Storage Water Snecification for the Design of Cold-Formed Steel Structural Heaters with Input/Ratings of 75,000 Btu per Hour or Less, 1993. Member. 1986 edition, with 1989 addendum. ANSI Z 21.15, Manually Operated Gas Valves for Appliances, This document, which covered ASD design only, has been 'Appliance Connector Valves and Hose End Valves, 1992. replaced by the following standard that covers both ASD and ANSI Z 21.19, Refrigerators Using Gas Fuel, 1990. LRFD design: AISI-SG971. Specification for the Design of Cold- ANSI Z 21.20, Automatic Gas Ignition Systems and Components, Formed Steel Structural Members. 1996 e~tiot3, Consistent with 1993. ANSI Z 21.21, Automatic Valves for Gas Appliances, 1993. the intent of this proposal to list the most recent editions. I ANSI Z 21.23, Gas Appliance Thermostats, 1993. suggest updating the AISI design standard. ANSI Z 21.24, Metal Connectors for Gas Appliances, 1993. In addition, the proposal lists the followin~ standard for steel ANSI Z 21.40.1, Gas-Fired Absorption Summer Air Conditioning cables: AISI Manual for Structural Annlicat~ons of Steel Cables for Appliances, 1981. Building. 1975. ANSI Z 21.47, Gas-Fired Central Furnaces (Except Direct Vent If this is an ANSI standard, I am not familiar with the document. Central Furnaces), 1993. However, the title sounds very similar to an ANSI cable standard, ANSI Z 21.64, Direct Vent Central Furnaces, 1990. which was published in the early 1970's. The AISI standard is no ARI 210/240, Unitary Air-Conditioning and Air-Source Heat longer available havin~ been superseded by ASCE 19. I suggest Pump Equipment, 1989. that staff verify this lisung, ff the item is referring to the ol-ffAIS'I ASHRAE Handbook of Fundamentals, 1997 standard it needs to be deleted. ASME B 1.20.1, Pipe Threads, General Purpose (Inch), 1983. ASME, Boiler and Pressure Code, 1998 ASTM A 539, Standard Specification for Electric-Resistance- Welded Coiled Steel Tubing for Gas and Fuel Oil Lines, 1990.

322 NFPA 501 -- MAY 2000 ROP i ASTM B 280, Standard Specification for Seamless Copper Tube I UL 1042, Standard for Safety Electric Baseboard Heating for Air Conditioning and Refrigeration Field Service, A-95. Equipment, 1994. ASTM E 96, Standard Test Methods for Water Vapor UL 1482, Standard for Safety Room Heaters, Solid-Fuel Type, Transmission of Materials, 1995. 1996. PNL 8006, HUD User No. 0005945, "Overall U-values and UL 1995, Standard for Safety, Heating and Cooling Equipment, Heating/Cooling Loads - Manufactured Homes." 1992 1995 (this supersedes UL 1096, Standard for Safety Electric Central IAPMO TSC 9, Material and Property Standard for Diversion Air Heating Equipment, 1988). Tees and Twin Waste Elbows, 1984. COMMITTEE STATEMENT: The committee reviewed the The following represents the current edition for the reference standards that are under their responsibility. standards that this committee has responsibility for: NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 AAMA 1503.1, Voluntary Test Method for Thermal Transmittance VOTE ON COMMITTEE ACTION: and Condensation Resistance of Windows, Doors, and Glazed Wall AFFIRMATIVE: 12 Sections, 1988 edition. COMMENT ON AFFIRMATIVE: ANSI C72.1, Electric Storage Water Heaters, 1972. PABIAN: In response to the list of revised standards in Proposal ANSI Z 21.1, Household Cooking Gas Appliances, 1996. 501-5 (Log #184c) I have attached the following revised list of ANSI Z 21.5.1, Gas Clothes Dryers Volume I Type 1 Clothes current UL standards (with issue dates and revision dates) for Dryers, 1995. heating, cooling and fuel-burning appliances and components ANSI Z 21.10.1, Gas Water Heaters, Volume I, Storage Water used in manufactured home referenced in Table 8-3 of NFPA 501. Heaters with Input/Ratings of 75,000 Btu per Hour or Less, 1993. ANSI Z 21.15, Manually Operated Gas Valves for Appliances, Chimneys, Factory-Built Ninth Edition dated 12-18-95 Appliance Connector Valves and Hose End Valves, 1992. Residential Type and with revisions dated 2-15-96 ANSI Z 21.19, Refrigerators Using Gas Fuel, 1990. Building Heating ANSI Z 21.20, Automatic Gas Ignition Systems and Components, Appliance, UL 103 1993. ANSI Z 21.21, Automatic Valves for Gas Appliances, 1993. Tubing Fittings for Sixth Edition dated 6-19-97 ANSI Z 21.23, Gas Appliance Thermostats, 1993. Flammable a'nd ANSI Z 21.24, Metal Connectors for Gas Appliances, 1993. Combustible Fluids, ANSI Z 21.40.1, Gas-Fired Absorption Summer Air Conditioning Refrigeration Service, and Appliances, 1981. Marine Use, UL 109 ANSI Z 21.47, Gas-Fired Central Furnaces (Except Direct Vent Central Furnaces), 1993. Factory-Built Fireplaces, Seventh Edition dated 5-16-96 ANSI Z 21.64, Direct Vent Central Furnaces, 1990. UL 127 with revisions dated 6-15-98 ARI 210/240, Unitary Air-Conditioning and Air-Source Heat Pump Equipment, 1989. Household Electric Storage Tenth Edition dated 2-28-96 ASHRAE Handbook of Fundamentals, 1997 Tank Water Heaters, UL with revisions dated 11-10-97 ASME B 1.20.1, Pipe Threads, General Purpose (Inch), 1983. 174 ASME, Boiler and Pressure Code, 1998 ASTM A 539, Standard Specification for Electric-Resistance- Factory-Made Air Ducts Ninth Edition dated 12-14-98 Welded Coiled Steel Tubing for Gas and Fuel Oil Lines, 1990. and Air Connectors, UL ASTM B 280, Standard Specification for Seamless Copper Tube 181A for Air Conditioning and Refrigeration Field Service, A-95. ASTM E 96, Standard Test Methods for Water Vapor Transmission of Materials, 1995. Closure Systems for Use Second Edition dated 11-29-94 PNL 8006, HUD User No. 0005945, "Overall U-values and with Flexible Air Ducts and with revisions dated 12-14-98 Heating/Cooling Loads - Manufactured Homes.", 1992 Air Connectors. UL 181B IAPMO TSC 9, Material and Property Standard for Diversion Tees and Twin Waste Elbows, 1984. Closure Systems for Use First Edition dated 10-20-95 No. 3-87, AGA Requirements for Gas Connectors for Connection with Flexible Air Ducts and with revisions dated 12-22-97 of Fixed Appliances for Outdoor Installation, Park Trailers and Air Connectors. UL 181B Manufactured (Mobile) Homes to the Gas Supply. NFPA 31, Standard for the Installation of Oil-Burning Liquid Fuel-Burning Equipment, 1997 edition. Seventh Edition dated 1-26-95 Heating Appliances for with revisions dated 21-1-97 NFPA 54, National Fuel (gas Code, 1996 edition. Manufactured Homes and NFPA 58, Standard for the Storage and Handling of Liquefied Recreational Vehicles, UL Petroleum Gases, 1995 edition. 307A NFPA 90B, Standard for the Installation of Warm Air Heating and Air Conditioning Systems, 1996 edition. Gas Burning Heating SAEJ533b, Flares for Tubing, 1992 Fourth Edition dated 1-26-95 Pliances for with revisions dated 9-28-98 UL 94, Standard for Safety Tests for Flammability of Plastic nufactured Homes and Materials for Parts in Devices and Appliances, 1996. UL 103, Standard for Safety Chimneys, Factory-Built, Residential Recreational Vehicles, UL Type and Building Heating Appliance, 1995. 3O713 UL 109, Standard for Safety Tube Fittings for Flammable and Combustible Fluids, Refrigeration Service, and Marine Use, 1997. Roof Jacks for Eighth Edition dated 4-6-94 UL 127, Standard for Safety Factory-Built Fireplaces, 1996. Manufactured Homes and with revisions dated 8-2%98 UL 174, Standard for Safety Household Electric Storage Tank Recreational Vehicles, UL Water Heaters, 1996. 311 UL 181, Standard for Safety Factory-Made Air Ducts and Air Connectors, 1996. Gas Vents, UL 441 Ninth Edition dated 1-16-96 UL 307A, Standard for Safety Liquid Fuel-Burning Heating with revisions dated 10-9-97 Appliances for Manufactured Homes and Recreational Vehicles, 1995. UL 307B, Standard for Safety Gas Burning Heating Appliances for Mobile Homes and Recreational Vehicles, 1995. UL 311, Standard for Safety Roof Jacks for Manufactured Homes Pigtails and Flexible Hose Eighth Edition dated 5-2-96 and Recreational Vehicles, 1994. Connectors for LP-Gas, UL with revisions dated 6-15-98 UL 441, Standard for Safety Gas Vents, 1996. 569 UL 465, Standard for Safety Central Cooling Air Conditioners, " 1987. Fireplace Stoves, UL 737 Eighth Edition dated 5-2-96 UL 569, Standard for Safety Pigtails and Flexible Hose wi~'b revisions dated 6-15-98 Connectors for LP-Gas, 1995. UL 737, Standard for Safety Fireplace Stoves, 1996. UL 1025, Standard for Safety Electric Air Heaters, 1991.

323 NFPA 501 -- MAY 2000 ROP

COMMITTEE STATEMENT: While the committee is not against adding reference standards to NFPA 501, the proposal does not 1025"* provide substantiation that explains the content of the proposed plumbingstandards, and the benefit of adding them to Chapter 7. Electric Baseboard Heating Fourth Edition dated 4-11-94 NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6 Equipment, UL 1042 with revisions dated 9-998 VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 6 Solid-Fuel Type Heaters, Fifth Edition dated 2-16-98 UL 1482 with revifions dated 9-24-98 Second Edition dated %29-95 (Log #184e) Heating and Cooling with revisions dated 7-31-98 Equipment, UL 1995 (this Committee: MAN-ELE supersedes UL 1096, 501- 7 - (Various Sections): Reject Standard for Safety Electric TCC NOTE: The Technical Correlating Committee on Central Air Heating Manufactured Housing (MAN-AAC) directs that a public Equipment, 1998 comment be submitted in the Correlating Committee's name Second Edition dated 4-16-97 requesting that the Technical Committee on Electrical for Fixed and Location- with revisions dated 7-20-98 Manufactured Housing (MAN-ELE) review all the reference Dedicated Electric Room documents under their purview for those standards that may Electric Room Heaters, UL contain proprietary material. If applicable, the Technical 2021 Committee is directed to identlfy those engineering or technical portions of the proprietary standard that is required to be met. For information purposes only- SUBMITTER= John G. Bradfield, CompositePanel Assn. *-UL 465 has been withdrawn and replaced with I~L 1995 RECOMMENDATION: The CPA proposes that NFPA 501 **-UL 1025 has been withdrawn and replaced with UL 2021 incorporate the updated standards reference cited by the HUD in the Federal Register, pages 58570-58584, on October $0, 1998. WALTER: I agree with the Comment on Affirmative by Pabian. Note: Supporting material is available for review at NFPA The revised list of UL standards should be accepted. Headquarters. SUBSTANTIATION: The Composite Panel Association (CPA) would like to submit the proposal above for the 2000 edition of NFPA 501, Standard on Manufactured Housing. The CPA is the (Log #184d) North American trade association for the producers of Committee: MAN-PLU particleboard and medium density fiberboard (MDF). CPA's 38 501- 6 --(Various Sections): Reject corporate members, with their 70 plants represent approximately TCC NOTE: The Technical Correlating Committee on 90 percent of the U.S. and Canadian particleboard and MDF Manufactured Housing (MAN-AAC) directs that a public ~[ oduction capacity. I am CPA's representative on the NFPA 501 comment be submitted in the Correlating Committee's name annfactured Housing Technical Committee on Structural. requesting that the Technical Committee on Plumbing for The CPA supports the efforts of HUD to update standards Manufactured Housing (MAN-PLU) review all the reference referenced by the Manufactured Home Construction and Safety documents under their purview for those standards that may Standards and wishes to extend that effort through its participation contain proprietary material. If applicable, the Technical in NFPA. CPA has actively maintained ANSI and ASTM standards Committee is directed to identify those engineering or technical for particleboard and MDF to recognize ongoing product portions of the proprietary standard that is required to be met. improvements. We would like to note that the ANSI A208.1-1993 SUBMITTER: John G. Bradfield, Composite Panel Assn. standard for particleboard referenced by HUD on 10/30/98 was RECOMMENDATION: The CPA proposes that NFPA 501 recently updated. Last week ANSI announced the final approval of incorporate the updated standards reference cited by the HUD in ANSI A208.1-1999 for Particleboard. the Federal Register, pages 58570-58584, on October 30, 1998. An important product improvement aspect of ANSI A208.1-1993 Note: Supporting material is available for review at NFPA (and 1999) for Particleboard and ANSI A208.2-1994 for MDF (also Headquarters. referenced by HUD on 10/30/98) is that they reference lower SUBSTANTIATION: The Composite Panel Association (CPA) emission standards for formaldehyde, an issue that is on NFPA's would like to submit the proposal above for the 2000 edition of agenda. The current HUD standard references ANSI A208.1-1989, NFPA 501, Standard on Manufactured Housing. The CPA is the which has a product limit of 0.3 ppm in a standardized test. ANSI North American trade association for the producers of A208.1-1993 lowered the limit to 0.2 ppm for Manufactured Home particleboard and medium density fiberboard (MDF). CPA's 38 Decking, the critical particleboard product for NFPA 501. The corporate members, with their 70 plants represent approximately previous MDF standard (1986) contained no formaldehyde 90 percent of the U.S. and Canadian particleboard and MDF provisions while ANSI A208.2-1994 added a limit of 0.3 ppm in a production capacity. I am CPA's representative on the NFPA 501 standardized test. MDF has become a widely used product in Manufactured Housing Technical Committee on Structural. manufactured home caibnetry and moldings. The CPA supports the efforts of HUD to update standards COMMITTEE ACTION: Reject. referenced by the Manufactured Home Construction and Safety COMMI'ITEE STATEMENT: The Technical Committee on Standards and wishes to extend that effort through its participation Electrical for Manufactured Housing reviewed the proposal to in NFPA. CPA has actively maintained ANSI and ASTM standards update the two referenced electrical standards, NFPA 70-1996 and for particleboard and MDF to recognize ongoing product ANSI C73.17 1972. improvements. We would like to note that the ANSI A208.1-1993 The Committee believes that the latest edition of NFPA 70 should standard for particleboard referenced by HUD on 10/30/98 was be used. The Committee also feels that it is not necessary to recently updated. Last week ANSI announced the final approval of reference ANSI C73.17-1972 as NFPA 501, Section %1.4, requires ANSI A208.1-1999 for Particleboard. that electrical equipment be listed in accordance with recognized An important product improvement aspect of ANSI A208.1-1993 product standards. (and 1999) for Particleboard and ANSI A208.2-1994 for MDF (also NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 9 referenced by HUD on 10/30/98) is that they reference lower VOTE ON COMMITTEE ACTION: emission standards for formaldehyde, an issue that is on NFPA's AFFIRMATIVE: 9 agenda. The current HUD standard references ANSI A208.1-1989, which has a product limit of 0.3 ppm in a standardized test. ANSI A208.1-1993 lowered the limit to 0.2 ppm for Manufactured Home Decking, the critical particleboard product for NFPA 501. The previous MDF standard (1986) contained no formaldehyde provisions while ANSI A208.2-1994 added a limit of 0.3 ppm in a standardized test. MDF has become a widely used product in manufactured home caibnetry and moldings. COMMITTEE ACTION: Reject.

324 NFPA 501 -- MAY ~ ROP

(Log #26) Committee: MAN-ADM Committee: (M~-~M 501- 8 - (1-4 [3280.4(a)]): Accept in Principle 501- 11 - (1-4.1 (New) [~280.4(c), New] ): Accept in Principle SUBM/IWER~ Frank Walter, ManufacturedHousing Inst. (MHI) SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) RECOMMENDATION: Revise Section 1-4 to read as follows: RECOMMENDATION: Add new text: "Some .'I~.c specifications, standards and codes 1-4.1 Whenever two or more incoroorated referenced standards thereof of the following organizations are incorporated by are eauivalent for use. the manufart~rer shall have the ootion to reference. Reference standards shall have the same force and effect as this Standard. SUBSTANTIATION: This recommended change was originally Exception: When reference standards and this standard are submitted to HUD by the MHCSS Consensus Committee on 12-29- inconsistent, the requirements of this standard prevail to the extent 94, but no action has been taken." When two or more of the inconsistency.~ reference standards are incorporated into the NFPA 501 Section 1- SUBSTANTIATION: This recommended change was originally 4/3280.4(d), a DAPIA, IPIA or the Monitoring Agent might elect submitted to HUD by the MHCSS Consensus Committee on 2-28- to enforce the one that the manufacturer di4not use inits design 96, but no action has been taken. The proposal will eliminate the and production of the home: and, therefore, leave the ~ossibility of incorrectly interpreting the current wording to mean manufacturer vulnerable to a failure to conform with the NFPA at all specifications, standards, and codes of the listed 501/HUD Standards. organizations are incorporated by reference. This kind of COMMrTTEE ACTION: Accept in Principle. interpretation has occurred in the past. [ Add a new last sentence to 1-4to read as follows: COMMITTEE ACTION: Accept in Principle. | 1-4.1 Where two or more referenced standards are equivalent in COMMITTEE STATEMENT: See Committee Action on ] application, the manufacturer shall have the option to incorporate Proposal 501-11 (Log #27). | into the manufactured home design and construction the NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 8 | referenced standard of their choosing. VOTE ON CoMMrFrEE ACTION: COMMITrEE STATEMENT: This proposed revised proposal text AFFIRMAT/VE: 7 meets the proponent's intent in Proposals 501-8 (Log #26) and ABSTENTION: 1 501-11 (Log #~27) while incorporating clearer enforceable code EXPLANATION OF ABSTENTION: text. GHORBANI: The.abstained items had been submitted to the NUMBER.OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 8 committee in BULK and as part of a group of 79 proposed VOTE ON COMMITTEE ACTION: changes by a now defunct consensus committee. While I keep an AFFIRMATIVE: 7 open mind on such proposals, I still wish to hear the ABSTENTION: 1 JUSTIFICATION and review the related technical EXPLANATION OF ABSTENTION: documentations-including any cost analysis-for EACH proposal GHORBANI: See my-Explanation of Abstention on Proposal and from the ORIGINAL proposer to the now defunct committee. 501-8 (Log #26). Once again, the NFPA Manufactured Housing Consensus Committee(s) SHOULD NOT accept and/or consider proposed changes submitted in hulk. Committee members must have the opportunity to hear, review, question, and debate each proposed (Log #143) change to the standards individually from/with the ORIGINAL Committee: MAN-ADM proposer. 501- 12- (I-5(0 (New) [3280~]): Reject SUBMITrER: James A. Ranfone, American Gas Assn. RECOMMENDATION: Add the following new text: (f) The statement "Any modifications to the manufactured (Log #139) home after comoletion ot~ initial retail sale shall comolv with Committee: MAN-ADM 501- 9 - (1-4 [3280.4]): Accept avvlicable local codes." SUBMITI~R: James A. Raufone, American Gas Assn. -I~enumber sections as follows: I RECOMMENDATION: Add the following new text: ~... AGA American Gas Association. 400 N. (~aDital Street. N.W, Washinqton. DC 20001. - xffi.itk~ ~j~... • SUBSTI~ITIATION: Add name and address of the American Gas Association. AGA and CSA International (Formally AGA SUBSTANTIATION: This change clarifies to home owners and Laboratories and IAS) are separate organizations. the local authority having jurisdiction that the provisions of this COMMITTEE ACTION: Accept. code do not apply to "used" manufactured homes that are being NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 8 sold or being offered for sale after the first purchase [24 CFR VOTE ON COMMITTEE ACTION: 3282.252(c)]. Also, 24 ~ 3282.252(b) specifically states that the AFFIRMATIVE: 8 standard applies only to the manufactured home at time of manufacture and up to completion of the entire sales transaction. COMMITTEE ACTION: Reject. COMMITTEE STATEMENT: All materials installed in a manufactured home should be listed for use in a manufactured Committee: home. Modifications to a manufactured home must allow the 501- 10- (1-4 [3280.4]): Accept manufactured home to remain in compliance with the federal SUBMITI'ER: James A. Ranfone, American Gas Assn. standards. Local applicable laws don't provide that insurance. RECOMMENDATION: Revise text as follows: NUMBER OFCOMMrI'rEEI~EMBEI~ ELIGIBLE TO VOTE: 8 VOTE ON COMMITTEE ACTION: Pleasant Valley Road, Cleveland, OH 44131. AFFIRMATIVE: 8 SUBSTANTIATION: This change revises the tesdng laboratory to its new name. COMMITrEE ACTION: Accept. NUMBER OF COMMrIWEE MEMBERS ELIGIBLE TO VOTF~ 8 (Log #123) VOTE ON COMMITI'EE ACTION: Conm~ittee: MAN-MEC AFFIRMATIVE: 8 501- 13 - (2-3.2 [$280.103(b)]): A~ept in Principle SUBMITTER: Max Sherman, Lawrence Berkeley Nat'! Lab RECOMMENDATION: Add to the end oft.he first sentence: "...but not less than 15 cfm perperson." SUBSTANTIATION: 0.35 Air changes is not sufficient in small dwellings. ASHP.2~E 62-89 specifies 0.35 ach, but no less than 15 cfm per person. For this purpose it is assumed that the first bedroom has 2 people and all others have one.

325 NFPA 501 -- MAY 2000 ROP

With a high occupant density the key sources of pollution are (b) Designed for continuous oneration and a lpinim~lll ]0-Year dependent on people and their activities and not the furnishings or life. materials. 2-3.2.65 A mechanical ventilation system, or mechanical portion COMMITTEE ACTION: Accept in Principle. thereof, shall be provided with a manual control, and shall be See Committee Action on Proposal 501-14 (Log #CP400). permitted to be provided with automatic timers or humidistats. COMMITTEE STATEMENT: The Committee Action on Proposal 501-14 (Log #CP400) should meet the submitter's intent. 24.2:7- li ...... v .... ; w v ...... NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 VOTE ON COMMITTEE ACTION: ...... v ...... J ...... Occupant AFFIRMATIVE: 11 Education. Instructions for correcdv oneratin~ and maintainin~ NEGATIVE: 1 whole-house ventilation systems shah be included with the - EXPLANATION OF NEGATIVE: homeowner's manual. The instructions shall encourage STEVENS: This vote to accept would establish a different occuoants to ooerate these devices whenever the homeis standard for the minimum cfm permitted for whole house occupi¢~t, and refer to the whole-house ventilatiop labeled col'll;rol. ventilation systems to the one later accepted under Proposal 501-14 The whole-house ventilation label shall be nermanent, shall state: (Log #CP400). "WHOLE-HOUSE VENTILATION" and shall be attached to the whole-house ventilation control. SUBSTANTIATION: The 0.035 cfmper sq ft of interior floor (Log #CP400) area provides a simple rule of thumb for sizing the ventilation Committee: MAN-MEC systems of ty~.ical homes. The 50 cfm minimum is to address 501- 14- (2-3.2): Accept pollutant butld-up in smaller units with high occupancy. In these SUBMITI'EI~ Technical Committee on Mechanical for situations, 15 cfm per bedroom is commonly suggested. The Manufactured Housing maximum 90 cfm limit provides ample ventilation in the largest RECOMMENDATION: Revise 2-3.2 as follows: triple-wide units (i.e,, 2600 sq ft) because of the larger volumes. 2-3.2 Whole-House Ventilation. Each manufactured home shall No passive system has been shown to provide reliable whole- house ventilation without a mechanical driving force. Passive cha=gez Fer hour tar-~Jx ...... ",~o~, ~ .... ~...... ventilation without mechanical ventilation rely on stack and wind x ..... z, ..... ~l ...... 1 ..... b ...... effects which are not always present when ventilation is required, prgvided with whole house ventilatmn hawn~ a minimum caoacitv especially when air conditioning is needed and under spring or all heating conditions. Some reasonable limits should be provided in terms of negative

..... : ...... +, ~+ ...... ;~, ~17 I% 1 PI A PU ~o :*o pressures. A value of 0.03 inches-water (7 Pa) provides a reasonable target to ensure after-market, non-HUn approved ...... ~ ..... ~,~ ~.~...... ~ of 0.035 wood or gas burning appliances do not back-draft as a result of t~S/min/ft l (.00018 mS/s/m e) of interior floor space or its hourly. negative pressure caused by any ventilation system. average equivalent. This ventilation capacity shall be in addition to The new 2-3.2.4 makes it acceptable to locate a whole-house any openable window area. In no case shall the installed exhaust ventilation system in a bathroom. Adding this should ventilation caoacitv of the system be less than 50 cfm nor more allow manufacturers to locate the whole-house ventilation system thai~ 90 cfm. such as an exhaust ventilation system in a bathroom. This will 2-3.2.g 1_ The remaining ventilation capacity shall be permitted to eliminate the need and cost for an additional exhaust fan and be provided by a mechanical system, a pazai;'e a)~tem., or a overcome problems associated with HUD Interpretive Bulletin in combination passive and mechanical system. The ventilation FMHC.SS 3280.103(b) related to questions 2, 8, and 9. system or provisions for ventilation shall not create a positive Adding 2-3.2.4 will eliminate noisy ventilation systems which tend pressure in U 0 value Zone 2 and Zone 3 or a negative pressure to not be operated by occupants as intended (ASHRAE PH-97-8- condition in U 0 value Zone 1 in excess of 0.03 inches of water (7 2), thereby limiting their effectiveness in reducing indoor air pollutant concentrations. Over 20 fans are certified by HVI at 1.0 Pa~. ,~Acchanica! :)'ctcmz cka1! bc ba!anccd. Cvmb!na=i~n pazz!-'c sone or less, from major manufacturers such as Broan, Nutone, and mechanica! z)~temz ~hal! ~a:'e adequately z!zed !n!e*~ cr and Panasonic. This will also improve the longevity of these ventilation systems, reduce service calls and premature failures, while making them more acceptable to occupants. Occupant acceptance is key to ventilation system operation to reduce indoor , w-," Z"-qY/G...... : :~.,...... a ...... ~' ...... :-- ~, ~r high :-'ina.~~ aha!! Ec air pollution. Humidity control will not control all indoor air pollutants, only moisture related pollutants. Other indoor air 2-3.2.4-2 The ventilation system or provisions for ventilation shall pollutants may exist even where humidity is low. exchange air directly with the exterior of the home, except it shall Consumer education regarding whole-house ventilation systems is not draw or expd air with the space underneath the home. The key to ensuring their effectiveness in removing indoor air I ventilation system or provisions for ventilation shall not draw or pollutants from the home and possibly reducing associated indoor expel air into the floor, wall, or ceiling/roof systems, even if those air quality and moisture liabilities to the manufacturers. systems are vented. The ventilation system shall be desimaed to COMMITTEE ACTION: Accept. ensure that outside air is distributed to all bedrooms and main NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 livin~ areas. The combined use of undercut doors or transom VOTE ON COMMITTEE ACTION: grills connecting those areas to the room where the mecharlical AFFIRMATIVE: 12 svstem is located shall be deemed accentable. COMMENT ON AFFIRMATIVE: 2-3.2.~ 3 The ventilation system or a portion thereof shall be WALTER: The new paragraph (a) in 2-3.2.4 should read: permitted to be integral with the home's heating or cooling system. "Maximum sone rating of 1.0" (not zone). The system shall be capable of operating independently of the STEVENS: Request committee reconsider the deletion of "a i heating or cooling modes. A ventilation system that is integral with passive system" in the first sentence of 2-3.2.1, and reinstate the the heating or cooling system shall be listed as part of the heating provision. The concerns addressed by the task force in crafting the and cooling system or listed as suitable for use therewith. provisions to permit bath exhaust fans in the whole house 2-3.2.4 The ventilation system or oortion thereof shall also be ventilation systems, also displayed a like uncertainly on the oermitted to be one of the bathroom exhaust fa~s required by 2- reliability of some of the mechanical systems currently being utilized. I believe that rather than abandoning the passive concept, 3.3.3 orovided the following criteria are met; our efforts should be directed more to correcting shortcomings we (a) Maximum zone ratin~ of 1.0 identify in performance.

326 NFPA 501 -- MAY 2000 ROP

(Log #123a) NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: Committee: MAN-ADM VOTE ON COMMITrEE ACTION: 50L 15 - (2-3.2 [3280.103(b)]): Reject AFFIRMATIVE: 8 TCC NOTE: The Technical Correlating Committee has determined that the responsibiUty for Sections 2-3.2 and 2-$.3 shall be under the jurisdiction of theTeehnical Committee on Mechanical. The Technical Correlating Committee, in reviewing (Log #122) the proposals associated with Section 2-3.5, prefers the Committee Committee: MAN-MEC Action on Proposal 501-14 (Log #CP400). The Technical 501- 18 - (2-3.2.2 [3280.(b)(2)] ): Accept in Principle Correlating Committee directs that a public comment be SUBMITTER: Max Sherman, Lawrence Berkeley Nat'l Lah submitted in the Technical Correlating Committee's name RECOMMENDATION: Delete "of .1 ACH, or its hourly requesting that the Technical Committee on Mechanical for equivalent," Manufactured Housing review the action taken by the Technical Add to the end of the section: Committee on Administration for Manufactured Housing on the "The remaining ventilation shall not be less than 45 cfm." roposal and take appropriate action if necessary. SUBSTANTIATION: As noted in other comments, the standard ~ UBMITTER= Max Sherman, Lawrence Berkeley Nat'l Lab currendy overstates the role of infiltration. RECOMMENDATION: Add to the end of the first sentence: In a tight envelope there may be none. "but not less than 15 cfm per person." Given that mechanical ventilation is required by HUD, it is SUBSTANTIATION: 0.35 Air changes is not sufficient in small important to make sure that there is sufficient amounL dwellings. 45 cfm of mechanical ventilation is enough to handle $ people or ASHRAE 62-89 specifies 0.35 ach, but no less than 15 cfm per 1000 sq. ft. assuming no infiltration. It is difficult to get fans much person. For this purpose it is assumed that the first bedroom has smaller than this in any case. 2 people and all others have one. COMMITTEE ACTION: Accept in Principle. With a high occupant density the key sources of [~olludon are COMMITTEE STATEMENT: See Committee Action on Proposal dependent on people and their activities and not the furnishings or 501-14 (Log #CP400). materials. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 COMMITTEE ACTION: Reject. VOTE ON COMMITTEE ACTION: COMMITTEE STATEMENT: The proposer has not provided AFFIRMATIVE: 12 sufficient supporting data to jusdfy this change and there is no data on cost. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 8 VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 8 Committee: 501- 19 - (2-3.2.2 [3280.(b) (2)]): Reject TCC NOTE: The Technical Correlating Committee has determined that the responsibility for Sections 2-3.2 and 2-3.3 shall (Log #124) be under the jurisdlcdon of theTechnical Committee on Committee: MAN-MEC Mechanical for Manufactured Housing. The Technical 501- 16- (2-3.2.1 [3280.103(b)(1)] ): Accept in Principle Correlating Committee, in reviewing the proposals associated with SUBMITTER: Max Sherman, Lawrence Berkeley Nat'l Lab Section 2-$.3, prefers the Committee Action on Proposal 501-14 RECOMMENDATION: Change "0.25 ACH" to "1 cfm/100 sq ft." (Log #CP400). The Technical Correlating Committee directs that SUBSTANTIATION: 0.25 ACH overstates the amount of a public comment be submitted in the Technical Correlating infiltration that actually occurs. Data has demonstrated much Committee's name requesting that the Technical Committee on lower values for new construction. Mechanical for Manufactured Housing review the action taken by The public review draft of ASHRAE 62.2 uses 1 cfm/100 sq ft as a the Technical Committee on Administration for Manufactured reasonable infiltration credit. Housing on the proposal and take appropriate action if necessary. COMMITTEE ACTION: Accept in Principle. SUBMITTER: Max Sherman, Lawrence Berkeley Nat'l Lab See Committee Action on Proposal 501-14 (Log #CP400). RECOMMENDATION: Delete "of .1 ACH, or its hourly COMMITTEE STATEMENT: The Committee Action on Proposal equivalent," 501-14 (Log #CP400) should meet the submitter's intent. Add to the end of the section: NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 "The remaining ventilation shall not be less than 45 cfm." VOTE ON COMMITTEE ACTION: SUBSTANTIATION: As noted in other comments, the standard AFFIRMATIVE: 12 currendy overstates the role of infiltration. In a tight envelope there may be none. Given that mechanical ventilation is required by HUD, it is important to make sure that there is sufficient amount. (Log #124a) 45 cfm of mechanical ventilation is enough to handle $ people or Committee: MAN-ADM 1000 sq. ft. assuming no infiltration. It is difficult to get fans much 501- 17- (2-3.2.1 [3280.103(b)(1)] ): Reject smaller than this in any case. TCC NOTE: The Technical Correlating Committee has COMMITTEE ACTION: Reject. determined that the responsibility for Sections 2-$,2 and 2-3.3 shall COMMITTEE STATEMENT: See Committee Action on Proposal be under the jurisdiction of the Technical Committee on 501-15 (Log #123a). Mechanical for Manufactured Housing. The Technical NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 8 Correlating Committee, in reviewing the proposals associated with VOTE ON COMMITTEE ACTION: Section 2-3.3, prefers the Committee Action on Proposal 501-14 AFFIRMATIVE: 8 (Log #CP400). The Technical Correlating Committee directs that a public comment be submitted in the Technical Correlating Committee's name requesting that the Technical Committee on Mechanical for Manufactured Housing review the action taken by (Log #28) the Technical Committee on Administration for Manufactured Committee: MAN-MEC Housingon the proposal and take appropriate action if necessary. 501- 20 - (2-3.2.3 [3280.103(b)(3)] ): Accept SUBMITTER: Max Sherman, Lawrence Berkeley Nat'l Lab SUBMIITER: Frank Walter, Manufacture 6 Housing Inst. (MHI) RECOMMENDATION: Change "0.25 ACH" to "1 cfm/100 sq ft." RECOMMENDATION: Revise Section 2-3.2.2 to read as follows: SUBSTANTIATION: 0.25 ACH overstates the amount of "The remaining ventilation capacity shall be permitted to be infiltration that actually occurs. Data has demonstrated much provided by a mechanical system, a passive system, or a lower values for new construction. i combination passive and mechanical system. The ventilation The public review draft of ASHRAE 62.2 uses 1 cfm/100 sq ft as a system or provisions for ventilation shall not create a positive reasonable infiltration credit. pressure in Uo value Zone 2 or Zone $ or a negative pressure COMMITTEE ACTION: Reject. condition in U o value Zone 1. Mechanical systems shall be COMMITTEE STATEMENT: No data presented. Draft of balanced. Cem~a'.5~ pa~=!-:c a~d mczhaa'cz2:7~tcm~ =~:ll have ASHRAE 62.2 is not a recognized standard but is only an internal d~q ..... '7 o:.oa :~, ...... L...... 1...... ) .... ~.~,.... a committee working document. pr=~z'['~." P'~s~ives~tems s~ha]~]aave~in]e~-and'ex~q'anstven'~ of

327 NFPA 501 ~ MAY 2000 ROP

sufficient size to alleviate unbalanced pressure conditions under NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 normal conditions. Temporary imbalances due to gusting or high VOTE ON COMMITTEE ACTION: winds shall be permitted." AFFIRMATIVE: 12 SUBSTANTIATION: This recommended change was originally submitted to HUD by the MHCSS Consensus Committee on 2-28- 96, but no action has been taken. Since mechanical systems have to be balanced as required by the standards, methods other than (Log #15) required inlets or exhausts should be acceptable. Committee: MAN-ADM COMMITTEE ACTION: Accept. 501- 23 - (2-5.1 [3280.105] ): Accept in Principle NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 TCC NOTE: The Technical Correlating Committee on VOTE ON COMMITTEE ACTION: Manufactured Housing (MAN-AAC) directs that a public AFFIRMATIVE: 12 comment be submitted in the Correlating Committee's name requesting that the Technical Committee on Administration for Manufactured Housing (MAN-ADM) provide a greater .. clarification of the intent of the measurement of the travel (Log #28a) distance when obstructions are found in the normal available path Committee: MAN-ADM of travel. The Technical Correlating Committee requests the 501- 21 - (2-3.2.3 [3280.103(b) (3)]): Accept Technical Committee to review the language that is found in TCC NOTE: The Technical Correlating Committee has NFPA 101, Life Safety Code, Paragraph 5-6.2, which reads: "The determined that the responsibility for Sections 2-3.2 and 2-3.3 shall travel distance to an exit shall be measured on the floor or other be under the jurisdiction of theTechnical" Committee on walking surface along the centerUne of the natural path of travel Mechanical for Manufactured Housing. The Technical starting from the most remote point subject to occupancy, curving Correlating Committee, in reviewing the proposals associated with around any corned's or obstructions with a l-ft (0.3-m) clearance Section 2-3.3, prefers the Committee Action on Proposal 501-14 therefrom, and ending at the center of the doorway or other point (Log #CP400). The Technical Correlating Committee directs that at which the exit begins." a public comment be submitted in the Technical Correlating SUBMTI'rER: Kurt Pugh, State of Oregon Committee's name requesting that the Technical Committee on RECOMMENDATION: Revise text to read: Mechanical for Manufactured Housing review the action taken by "One of the required exit doors must be accessible from the the Technical Committee on Administration for Manufactured doorway at each bedroom without traveling more than $5 ft." Housing on the proposal and take appropriate action if necessary. SUBSTANTIATION: Clarify if this includes obstructors, such as SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) counter tops, corner of walls, trim, etc. should be a minimum I RECOMMENDATION: Revise Section 2-3.2.2 to read as follows: distance away from any obstacle for measuring path of travel. "The remaining yentilation capacity shall be permitted to be COMMITTEE ACTION: Accept in Principle. provided by a mechanical system, a passive system, or a I Revise 2-5.1.2.4 to read as follows: combination passive and mechanical system. The ventilation 2-5.1.2.4 One of the required exit doors must be accessible from system or provisions for ventilation shall not create a positive the doorway at each bedroom without traveling more than 35 ft pressure in Uo value Zone 2 or Zone 3 or a negative pressure excluding obstructions such as countertops in the path of travel. condition in U o value Zone 1. Mechanical systems shall be COMMITTEE STATEMENT: The revised wording should meet balanced. Cc~mb:.=='2c~. paz='-'z and mcc.h=aic~ ~, z'/ztcm= :~al! l~c.vc the intent of the submitter. ~n ...... t-' z~zcd ".q!ctz or cxh~:zzt to rz!cazc ~..'z).... r.~ .... a NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 8 Passive systems shall have inlets and exhaust vents of VOTE ON COMMITTEE ACTION: sufficient size to alleviate unbalanced pressure conditions under AFFIRMATIVE: 6 normal conditions. Temporary imbalances due to gusting or high NEGATIVE: 2 winds shall be permitted." EXPLANATION OF NEGATIVE: SUBSTANTIATION: This recommended change was originally GHORBANI: This is to advise you that I wish to change my vote submitted to HUD by the MHCSS Consensus Committee on 2-28- on Proposal 501-23 (Log #15) from affirmative to negative. 96, but no action has been taken. Since mechanical systems have GILCHRIST: The reason for a rejection of this item is the listing to be balanced as required by the standards, methods other than of a specific distance from a bedroom door to an exit. required inlets or exhausts should be acceptable. In light of many of the other proposals within this NFPA 501 COMMITTEE ACTION: Accept. ROP ballot referring to the recognition of the use of manufactured COMMITTEE STATEMENT: The Committee endorses the homes in two-story structures and depending upon their sizes, a second part of the submitter's substantiation. This change will specific distance requirement may not be reasonable in allowing provide alternative methods to achieve the same means. two-story structures. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 8 In many instances across the nation, manufactured two-story VOTE ON COMMITTEE ACTION: homes are being used as in.fill housing to meet needs in older AFFIRMATIVE: 7 urban neighborhoods. These activities should be encouraged as ABSTENTION: 1 part of the nations affordable housing programs. EXPLANATION OF ABSTENTION: Perhaps there would be some way to create a performance GHORBANI: See my Explanation of Abstention on Proposal oriented language to address this issue. 501-8 (Log #26). Another consideration is that many homes are site built in the nation of extremely large size and realistically probably have bedrooms that are greater distance than 35 feet from an exit door. Are theyprecluded from being constructed? (Log #127) COMMENT ON AFFIRMATIVE: Committee: MAN-MEC MCHALE: I agree with Marry Gilchrist's explanation, that multi 501- 22 - (2-3.2.5 [3280.103(b) (5)]): Reject floor manufactured homes must consider another avenue of SUBMITTER: Max Sherman, Lawrence Berkeley Nat'l Lab escape. RECOMMENDATION: Add to the end of the section: "Automatic control must be provided to assure that the ventilation system run at least one hour out of any four." SUBSTANTIATION: A ventilation system must operate to be (Log #29) effective. Committee: MAN-ADM During swing seasons the heating and cooling system may not 501- 24 - (2-5.2.2 [3280.105(b)(2)] ): Accept in Principle turn on for hours or even days. The efficiency of a ventilation SUBMITrER: Frank Walter, Manufactured Housing Inst. (MH1) system working less than 25 percent duty cycle is quite low and RECOMMENDATION: Revise Section 2-5.2.2 as follows: requires substantially more air volume. "All exterior swinging doors shall provide a minimum 28-in. wide Simple timers are available to make sure that the air handler runs x 74-in. high (71-cm x 188 cm) clear opening. All exterior sliding a minimum amount of time, even if there is no thermal load. glass doors shall provide a minimum 28-in. x 72-in. (71-era x 183- COMMITTEE ACTION: Reject. cm) high clear opening. Door seals shall be nermitted to reduce COMMITTEE STATEMENT: Present language provides adequate the onenin~, either vertically or horizontally, a maximum of one v provision for this requirement. The proposed change is written in inch." vague and unenforceable language.

328 NFPA 501 -- MAY 2000 ROP

SUBSTANTIATION: This recommended change was originally submitted to HUD by the MHCSS Consensus Committee on 12-26- 90, but no action has been taken. The adjective "clear" or "minimum" before "opening" is eliminated because it is redundant Eu!ld]~g=. Safety glazing materials is considered to be of any and confusing. ~lazing waterial capable of nassin~ the reauirements of ANSI COMMITTEE ACTION: Accept in Principle. Z97.1. Safety Performance S-necifications and Methods of Test for Revise 2-5.2.2 as follows: Safety Glazln~ Materials Used in Buildln~s. and shall be used in 2-5.2.2 All exterior swinging egress doors shall provide a the followinghazardous locations where glazing shall be nermitted minimum 28-in. wide x 74-in. high (71-cm x 188 cm) clear t9 17¢ ~biect to human impact: opening. All exterior sliding glass doors shall provide a minimum 2~-in. x 72-in. (71-cm x 18~-cm) high clear opening. Door seals (a) Glazinl~ in ingress and e~ress doors excent ialousies. shall be nermitted to reduce the onenin~, either verticallv or (b) Glazin~ in fixed and slidin~ nanels of slidin~-tvoe doors laorizontallv, a maximum of one inch." (ha(in). COMMITTEE STATEMENT: This provision is only intended to (c) Glazin~ in storm doors. apply to egress doors. This rewording should meet the intent of (d) Glazin~ in all unframed swin~,in~ doors. the submitter. (el Doors and enclosures for hot tubs. whirlnools, saunas. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 8 steam rooms, bathtubs, and showers: any nor(ion of a wall VOTE ON COMMITTEE ACTION: enclosing these comnartments when thebottom edge of the AFFIRMATIVE: 7 ulazin~ is less than 60 in. (1.5 m) above the room floor level. ABSTENTION: 1 (D Glazing. onerable or inoperable adjacent to a door and EXPLANATION OF ABSTENTION: within the same wall nlane as the door whose nearest vertical edge GHORBANI: See my Explanation of Abstention on Proposal 501-8 (Log #26). iS within 12 in. (30 cml of the door in a closed nosidon and whose bottom edge is less than 60 in. (1.5 m) above the floor or walkin~ surface. (g) Glazing in fixed nanels havin~ a ~lazed area in excess of 9 ft2 (Log #13) (0.8 m2) with the lowest edge less than 19 in. (483 mm) above the Committee: MAN-ADM finished floor level or walkin~ surface within 36 in. (914 ram) of 501- 25 - (2-11 [3280.111]): Accept in Principle such glazing. In lieu of safety glazin~ such ~lazed nanels shall be SUBMITTER: Kurt Pugh, State of Oregon nermitted to be nroteeted witha horizontal-member not less than RECOMMENDATION: Revise text to read: "Toilet compartments shall be 30 in. in width, except when the 1-1/~ ill. (38 mml in width when located between 24 in. (610 mm) toilet is located adjacent to the short dimension of the tub, the ~nd 36 in. (914 ram) above the walkin~ surface. distance from the tub to the center line of the toilet shall not be Exceptions: The followin~ nroducts, materials, and uses are less than 12 in." ¢lempt from t~ae above hazardous locatiqns: SUBSTANTIATION: Clarify that toilets should be centered in a (1) Onenin~s in doors through which a 3-in. (76-mm) snhere is 30 in. compartment. unable to pas~, COMMITTEE ACTION: Accept in Principle. (2) Leaded glass pagleis. Revise 2-11 to read as follows: (3) Glazin~ in Item (D when there is an intervenin~ ~all or other 2-11 Toilet Compartments. Each toilet compartment shall have a minimum width of 30 in. (76 cm), with a minimum clear space of pgrmanent barrier between the door and the glazing. 21 in. (53 cm) in front of each toilet. Toilets located adjacent to a SUBSTANTIATION: This recommended change was originally wall shall have the center line of the toilet located a minimum of submitted to HUD by the MHCSS Consensus Committee on 12-26- 15 in. (38 cm) from the wall. Toilets located adjacent to a tub 90, but no action has been taken. This change incorporates the shall have the center line of the toilet located a minimum of 12 in. Department of Housing and Urban Development's (HUD's) (30 cm) from the outside edge of the tub. Interpretative Letter 85-B-7 and brings requirements more closely COMMITTEE STATEMENT: This incorporates the proponent's into conformance with CPSC 16 CFR Chapter 11, Suhchapter B, concerns of having the toilet "centered in a 30-inch compartment." Part 1201. The 15-inch dimension will center the toilet within a 30-mch COMMITTEE ACTION: Accept in Principle. compartment, and provides the minimum dimension from a wall Revise 2-13.2 and a new 2-13.3 to read as follows: when the compartment is wider than 30-inches. This also 2-15.2 Safety Glazing. Glazing in hazardous locations shall meet incorporates the existing exception into the main body of the the requirements of Sections 2-13.2.1, and those of 2-13.2.2 or 2- section text. These dimensions are consistent with the 1998 ICC- 13.2.3. OTFDC (One- and Two-Family Dwelling Code), and the 2-13.2.1 Safety glazing materials. Safety glazing material shall proposed ICC-IRC (International Residential Code). This meet the test requirements of CPSC 16 CFR 1201, or ANSI Z97.1 wording should meet the intent of the submitter. listed in Chapter 11. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 8 2-13.2.2 Hazardous location glazing. Where located and subject VOTE ON COMMITTEE ACTION: to human impact loads, except as oudined in Section 2-13.3, safety AFFIRMATIVE: 8 glazing shall be installed in the following hazardous locations: (a) Glazing in ingress and egress doors, except jalousies. (b) Glazing in fixed and sliding panels of sliding-type doors. (c) Glazing in storm-type doors. (Log #$0) (d) Glazing in unframed side-hinged swinging doors. Committee: MAN-ADM (el Glazing in doors and fixed panels less than 60 in. (1524 mm) 501- 26 - (2-13.2 [3280.113(b)]): Accept in Principle above the room floor level that enclose bathtubs, showers, TCC NOTE: The Technical Correlating Committee on hydromassage tubs, hot tubs, whirlpools, saunas, and steam Manufactured Housing (MAN-AAC) directs that a public rooms, comment be submitted in the Correlating Committee's name (f) Glazing within 12 in. (305 ram) horizontally, and 60 in. (1524 requestingthat the text *fisted in Chapter 11" in 2-13.2.1 be mm) vertically adjacent to and in the same plane of a door. The deleted. This additional text is not necessary as Chapter 11 12 inch (305 mm) dimension is measured from the edge of the contains all the referenced standards within the document. This door in the closed position. The 60 in. (1524 mm) dimension is permits consistency with editorial format and style found in the measured from the room floor level. document. (g) Glazing within 36 in. (914 ram) of an interior room walking SUBMITTER: Frank Walter, Marmfactured Housing Inst. (MHI) surface that meets all of the following: RECOMMENDATION: Revise Section ,2-13.2 to read as follows: 1. Individual glazed panel exceeds 9 sq ft (.836 m 2) in exposed areal (~xe~ ~r mc;~g =ect'ce=); uz~:~'z'..e~ gl~-~-- ~c~r=; ".m~acked 2. The bottom edge of the exposed glazing is Jess than 19 in. (483 mm) above the room floor level. 3. The top edge of the exposed glazing is greater than 36 in. (914 mm) above the room floor level. ~oor Ic;'cl; :te.'7~.. ~oore er cc.m~i;'.a+den a~eem; ar.J pra~c!z locatc~ (h) Glazing in guardrails and railings.

329 NFPA 501 -- MAY 2000 ROP

2-13.2.3 Locations not considered hazardous. The following are / not required to meet the requirements of Section 2-13.2.2: (a) Openings in doors through which a 3"in. (76 ram) sphere is unable to pass. (b) Leaded and decorative glazed panels. (c) Glazing as outlined in Section 2-13.2.2(0 where an intervening wall or other permanent barrier exists between the door and the glazing. (d) Glazing as outlined in Section 2-17,.2.2(g) where aprotective bar or member is installed horizontally between 54 in. (864 ram) and 38 in. (965 mm) above the room floor level. The bar or ::) Note: Open dsers optional member shall be a minimum 1 1/2 in. (38 rnm) in height, and .c: ] capable of withstanding a horizontal load of 50 pounds per linear E A = g in. minimum foot (74.5 kg/m). ._e B = 8½ in. maximum i (e) Mirrors hung or mounted on a flush door surface or solid o0 J i wall surface. COMMITTEE STATEMENT: This revision incorporates all of the concerns of the proponent, using clearer and more enforceable language. The text was revised to eliminate verbatim text found in existing codes. The term "hydromassage tub" was added. This is the term for a typical Jacuzzi whirlpool as used in the NEC. It may I/ be necessary to verify that Chapter 11 lists the two noted standards: / 1½ in. minimum CPSC 16 CFR 1201-77, Safety Stand for Architectural Glazing; and ~--3½ in. maximum ANSI Z79.1-84, Safety Performance Specifications and Methods of Test for Safety Glazing Materials Used in Buildings. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 8 VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 7 ABSTENTION: 1 EXPLANATION OF ABSTENTION: GHORBANI: See my Explanation of Abstention on Proposal 501-8 (Log #26).

(Log #31) Committee: MAN-ADM 501- 27 - (2-14(a) through (f) (New) [3280.115(a) through (f), Figure 2-14.1 New]) : Accept in Principle SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) As a result of market demands and industry innovation, RECOMMENDATION: Add a new Section 2-14 (a) - (f) to read manufacturers have created manufactured homes with split-levels, as follows: raised floors, decks, lofts and two-story dwellings. The use of 2-14 Stairways stairways in manufactured homes increases each year, yet the 2-14.1 Stairway Dimensions. Stairways shall be constructed to the NFPA 501 Standard are completely silent on the design and following minimum safety standards: construction of stairways, landings, guardrails or handrails. Poorly (a) Stair treads shall be a minimum of 9-in. (229 mm) in depth, designed or built stairways, landings, guardrails or handrails may as measured from the edge of the nosing to the vertical projection lead to serious accidents, especially among the elderly. If it is still of the upper tread. All treads shall have a nosing or effective the intent of the NFPA 501 Standard to reduce personal injuries, projection or approximately 1-in. (25-mm) when the risers are then this is an area the standard definitely needs to address. closed. The proposed addition of Section 2-14 is based on existing NFPA (b) Stair risers shall be a maximum of 8-1/4 in. (210 mm) high. and ANSI Standards, but is primarily based on the 1989 CABO Within any flight of stairs, the greatest riser height shall not exceed one- and Two-Family Dwelling Code. the smallest by more than 3/8 in. (10 mm). COMMITTEE ACTION: Accept in Principle. (c) Stairways shall not be less than 28 in. (711 ram) in clear Add a new section 2-14 to read as follow: width. No handrail, guardrail, or any other protrusion shall 2-14 Stairways. intrude into the required 28-in. (71 l-ram) minimum stairway 2-14.1 Stairways, General. Stairways shall be constructed in width. accordance with Section 2-14. Stairways shall not be less than 28 (d) Stairways shall have a minimum headroom of 6 ft - 8 in. in. (711-mm) in clear width. Required handrails, guardrails, or (2.03 m) in cotaformance with Figure 2-14.1. No fixture, device, or other construction shall not protrude into the required clear width protrusion of any kind shall intrude into the required 6 ft - 8 in of the stairway. Stairways shall have a minimum headroom height (2.03 m) minimum safety headroom. of 6 ft 8 in. (2032 mm) measured vertically from the leading edge (e) Winding stairways shall be permitted, provided the width of of a tread. Stairways consisting of three or more risers shall have a the tread at a point not more than 12 in. (305 mm) from the side minimum of one handrail that complies with Section 2-16. where the treads are narrower is not less than 9 in. (229 ram), the 2-14.1.1 Stair treads. Stair treads shall be a minimum of 9 in. minimum width of any tread is not less than 6 in. (152 mm), and (229 mm) in depth. The tread depth shall be measured on a the average width of any tread is not less than 9 in. (229 mm). perpendicular plane from the leading edge of the tread, to the (f) Spiral stairways shall be permitted, provided the minimum leading edge of an adjacent tread. Stairs with closed risers shall width shall be 26 in. (660 mm) with each tread having a 7-1/2 in. have a nosing of not less than 3/4 in. (19 ram), or greater than 1 (191 mm) minimum tread width at 12 in. (305 ram) from the 1/4 in. (32 ram). The greatest depth of a stairway tread shall not narrow edge. All treads shall be identical. exceed the smallest by more than 3/8 in. (9.5 ram). SUBSTANTIATION: This recommended change was originally 2-14.1.2 Stair risers. Stair treads shall be a maximum of 8-1/4 in. submitted to HUD by the MHCSS Consensus Committee on 12-26- (210 mm) in height. The riser height shall be measured from the 90, but no action has been taken. The need for the proposed top of one stairway tread, vertically to the top of an adjacent tread. addition of Section 2-14 to the NFPA 501 Standard is based on the The greatest height of a stairway riser shall not exceed the smallest ability of the manufactured housing industry to provide new and by more than 3/8 in. (9.5 mm). innovative designs and features which were not contemplated when 2-14.2 Winding stairways. Winding stairways are permitted the standards were originally written. provided the tread depth is not less than 9 in. (229 ram) at a point not more than 12 in. (305 ram) from the end of the tread that is narrower. The minimum tread depth shall be 6 in. (152 ram). 2-14.3 Spiral stairways. Spiral stairways are permitted provided the construction complies with all of the following: (a) The clear width of the stairway is not less than 26 in. (660 ram).

330 NFPA 501 ~ MAY 2000 ROP

(b) The tread depth is not less than 7 1/2 in. (191 mm) at a (Log #$3) point not more than 12 in. (305 mm) ~om the end of the tread Committee: MAN-ADM that is narrower. 501- 29 - (2-16 (New) [3280.117(a) through (d), New] ): Accept in (c) The minimum tread depth shall be 6 in. (152 mm). Principle (d) The maximum riser height shall not exceed 9-1/2 in. (241 SUBMITTER: Frank Waiter, Manufactured Housing Inst. (MHI) ram). RECOMMENDATION: Add a new Section 2-16 to read ,as follows: (e) The minimum headroom is 6 ft 6 in. (1982 mm). 2-16 Handrails. (f) All treads are identical in size. ~-16,1 Handl-~il Dimensions. Handrails shall be constructed to COMMITTEE STATEMENT: This revised text incorporates the ~¢ following minimum safetv standards: proponent's intent and proposed requirements. The revised text (a) Handrails having minimum and maximum heights of 30 in. incorporates language similar to that found in the ICC-OTFDC, (76~ mm] and 34 in. (864 mm~. resnectivelv, measured verticailv ICC-IRC, and NFPA-101, Section 5-2. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 8 from the nosing of the treads, shall be nrovided on at least one VOTE ON COMMITTEE ACTION: si~¢ of stairways of three or more risers. AFFIRMATIVE: 7 (b) The handgrip portion of the handrail shall be not more than ABSTENTION: 1 2-5/8 in. (67 mm) in cross-sectional dimension, or the shade shall EXPLANATION OF ABSTENTION: provide an equivalent tripping surface. The hand~ip portion of GHORBANI: See my Explanation of Abstention on Proposal handrails shall have a smooth surface with no sham corners: 501-8 (Log #26). (c) Handrails nroiectine from a wall shall have a snace of not less than 1-1/2 in. (38 mm~ between the wall and the handrail. (4) Handrails shall be securely attached to structural framing (Log #32) members. Committee: MAN-ADM SUBSTANTIATION: This recommended change was originally 501- 28 - (2-15 (New) [3280.116(a) through (b), New] ): Accept in submitted to HUD by the MHGSS Consensus Committee on 12-26- Principle 90, but no action has been taken. The need for the proposed SUBMITTER= Frank Walter, Manufactured Housing Inst. (MHI) addition to Section 2-16 to the NFPA 501 Standard is based on the RECOMMENDATION: Add a new Section 2-15 to read as follows: ability of the manufactured home industry to provide new and innovative design and features which were not contemplated when 2-15.1 Landin~ Dimensions. Landings shall be constructed to the the standard was originally developed. following minimum safety standards: - As a result of market demands and industry innovation, v (a) A minimum 3-ft by $-ft (0.9 m bv 0.9 m~ landing shall be manufacturers have created manufactured homes with split-levels, raised floors, decks, lofts and two-story dwellings. The use of reauired each side of a nassage door Which is accessed bv a stairways in manufactured homes increases each year, yet the 501 stairway, excet)t at the tot) of a flight of stairs when the door does Standard is completely silent on the design and construction of not swing over the stairs. stairways, landings, guardrails or handrails. Poorly designed or (b) The floor or landing shall not be more than 1-1/2 in. ($8 built stairways, landings, guardrails or handrails may lead to mm) lower than the ton of the door threshold. serious accidents, especially among the elderly. If it is still the SUBSTANTIATION: The need for the proposed addition of intent of the Standard to reduce personal injuries, then this is an Section 2-15 to the NFPA 501 Standard is based on the ability of area the Standard definitely needs to be addressed. the manufactured home industry to provide new and innovative The proposed addition of Section 2-16 is based on existing NFPA designs and features which were not contemplated when the and ANSI Standards, but is based primarily on the 1989 CABO standard was originally written. One- and Two-Family Dwelling Code. As a result of market demands and industry innovation, COMMITTEE ACTION: Accept in Principle. manufacturers have created manufactured homes with split-levels, Add a new Section 2-16 to read as follows: raised floors, decks, lofts and two-story dwellings. The use of 2-16 Handrails. stairways in manufactured homes increases each year, yet the 501 2-16 General. A minimum of one handrail meeting the Standard is completely silent on the design and construction of requirements of this section shall be installed on all stairways stairways, landings, guardrails or handrails. Poorly designed or consisting of three or more risers. Handrails shall be securely built stairways, landings, guardrails or handrails may lead to attached to structural framing members. A minimum space of 1- serious accidents, especially among the elderly, ff it is still the 1/2 in. ($8 ram) shall be provided between the adjoining wall intent of the Standard to reduce personal injuries, then this is an surface and the handrail. area the standard definitely needs to address. 2-16.2 Handrail height. Handrails shall be installed between $4 The proposed addition of Section 2-15 is based on existing NFPA in. (864 ram) and 38 in. (965 ram) measured vertically from the and ANSI Standards, but is primarily based on the 1989 CABO leading edge of the stairway treads. One- and Two-Family Dwelling Code. 2-16.$ Continuity. Required handrails shall be continuous from COMMITTEE ACTION: Accept in Principle. a point 90 degrees vertically from the leading edge of the lowest Add a new Section 2-15 that reads as follows: stair to the leading edge of the landing or floor surface at the top 2-15 Landings. of the stairway. The ends of handrails shall return into a wall, 2-15.1 General. A minimum dimension of travel distance of a terminate in a safety terminal or newel post. landing shall be 3 ft (914 mm). The minimum width of a landing 2-16.4 Handgrip. The handrail shall provide a minimum 1 1/4 shall not be less than the stairway or door that it serves. Landings in. ($2 mm), and a maximum 2 5/8 in. (66.7 mm) griping surface shall be located as required by Section 2-15.1. in cross-sectional dimension. A handrail shape that provides an 2-15.1.1 Stairways. A landing or floor shall be located at the equivalent gripping surface shall be accepted. The handgrip bottom and top of an interior stairway. A landing is not required ~ ortion of the handrail shall have a smooth surface. Edges shall at the top of a stairway that does not include a door that swings ave a minimum 1/8 in. (3.2 mm) radius. over the stairway. COMMITTEE STATEMENT: This revision incorporates all of the 2-15.1.2 Doors. A landing or floor shall be located on each side concerns of the proponent using clearer, more understandable of an interior doorway. The maximum threshold height above the code language. floor or landing shall be 1-1/2 in. (38 mm). NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 8 COMMITTEE STATEMENT: This revision incorporates all of the VOTE ON COMMITTEE ACTION: concerns of the proponent, using dearer and codified language. AFFIRMATIVE: 7 NUMBER OF COMMITI'EE MEMBERS ELIGIBLE TO VOTE: 8 ABSTENTION: 1 VOTE ON COMMITTEE ACTION: EXPLANATION OF ABSTENTION: AFFIRMATIVE: 7 GHORBANI: See my Explanation of Abstention on Proposal ABSTENTION: 1 501-8 (Log #26). EXPLANATION OF ABSTENTION: GHORBANI: See my Explanation of Abstention on Proposal 501-8 (Log #26).

331 NFPA 501 -- MAY 2000 ROP

(Log #34) EXPLANATION OF ABSTENTION: Committee: MAN-ADM GHORBANI: See my Explanation of Abstention on Proposal 501-30- (2-17 (New) [3280.118(a) through (d), New]): Accept in 501-8 (Log #26). Principle SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) RECOMMENDATION: Add a new Section 2-17 to read as follows: 2-17 Guardrails. (Log #178) 2-17.1 Guardrail Dimensions. Guardrails shall be cons~ucted to Committee: MAN-FIR the following minimum safetv standards: 501- 51 - (3-4.1 Exception [3280.204(a)]): Reject (a) Landings. stairways, oorches, balconies or raised floor SUBMITTER: Gary Johnson, Fleetwood Homes RECOMMENDATION: Revise the section to read as follows (no surfaces located more than-30 in. (76~ mm~ above the floor or changes to Exception): grade below shall have ~ruardrails not less than 36 in. (914 mm} in "The bottom and sides of combustible kitchen cabinets located height. over cooking ranges to a horizontal distance of 6 in. (152 ram) {b) Reauired euardrails on ooen sides of stairways, raised floor from the outside edge of the cooking range shall be protected by a~ areas, balconies, landirlgs, and oorches shall have intermediate rails or ornamental closures which will not allow the nassa~e of an Z.-.2",.: L ~':~ ,"" ~2. ~'L.'-,' a+ ...... material ~"++ ...... with a flame soread"+'-...... index not object 4 in. (102 mm) in dlam¢ter. exceeding 15." (c) GuarOlails shall be securely attached to structural framing SUBSTANTIATION: 1. This would provide the improved flame members. spread where it is needed. (5/16 in. gypsum is in the 25 range for (d) Guardrails shall not be reouired where such areas renuiring flame spread index). 2. This would allow the use of cabinets with smooth, finished guardrails are enclosed in screen, class or nlastic sheedn~. - surfaces without the unsightly gypsum panels (similar to "site- SUBSTANTIATION: This recommended change was originally built"). submitted to HUD by the MHCSS Consensus Committee on 12-26- COMMITTEE ACTION: Reject+ 90, but no action has been taken. The need for the proposed COMMITTEE STATEMENT: The purpose of the current addition to Section 2-17 of the NFPA 501 Standard is based on the requirement is to establish a thermal barrier at the bottom and ability of the manufactured home industry to provide new and sides of combustible kitchen cabinets. The deletion as proposed innovative designs and features which were not contemplated when and the reference to a flame spread index will not satisfy this the Standard was originally written. intent. A material having a low flame spread index does not As a result of market demands and industry innovation, establish that the material also has the same characteristics of manufacturers have created manufactured homes with split-levels, being limited combustible. The provisions of this section do not raised floors, decks, lofts and two-story dwellings. The use of prohibit the installation of materials having a lower flame spread if stairways in manufactured homes increases each year, yet the 501 it is desirable as long as the material can be considered an Standard is completely silent on the design and construction of equivalent limited combustible material. stairways, landing, guardrails or handrails. Poorly designed or NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 14 built stairways, landings, guardrails or handrails may lead to VOTE ON COMMITTEE ACTION: serious accidents, especially among the elderly. If it is still the AFFIRMATIVE: 12 intent of the Standard to reduce personal injuries, then dais is an NOT RETURNED: 2 Endthoff, Lee area the Standard definitely needs to be addressed. Guardrails are not required when the particular area is enclosed with screens, glass or plastic sheeting as suggested in Section 2- 17(d). However, this change was originally submitted to HUD in (Log #129) 1990. Indeed, plastic sheeting may not be applicable by today's Committee: MAN-FIR standards. It would be advisable for the NFPA 501 Committee to 501- 32 - (3-6 [3280.206]): Accept in Principle in Part revisit Item (d) and consider deleting plastic sheeting. This SUBMITTER: Richard P. Thornberry, Cellulose Insulation material is not ,as strong in resisting the forces associated with Manufacturers Assn. guardrail design as would be screens or glass enclosures. RECOMMENDATION: Revise text as follows: The proposed addition of Section 2-17 is based on existing NFPA 3-6 ~rezt~pF!ng Fireblocking. and ANSI Standards, but is primarily based on the 1989 CABO 3-6.1" F!rc=tcF#ng Fireblocking shall consist of at least 1-in. One- and Two-Family Dwelling Code. COMMITTEE ACTION: Accept in Principle. (25.4 mm) nominal lumber, 5/16-in. (8 mm) thick gypsum board, Add a new Section 2-17 that read as follows: or the equivalent. Mineral wool or class fiber batts or blankets 2-17 Guardrails. shall be allowed as fireblocking where installed so as to remain 2-17.1 General. A guardrail shall be provided on the open sides securely in nlace. Loose-fill insulation shall be allowed as of landings, balconies, porches, stairways, raised floor areas, or fireblocking when approved if it has been specifically tested in the other walking surfaces located more than 30 in. (762 mm) above a form and manfler intended for use to demonstrate its ability ~9 floor or grade below. Guardralls shall be securely attached to remain in nlace and restrict the spread of fire and the nassage of structural framing members. hot ~ases similar to other fireblocking materials allowec1 by this ! 2-17.1.1 Height. The nunimum height ofa guardraal shall be 36 section. in. (914 mm) where located along the open sides of landings, balconies, porches, raised floor areas, or other walking surfaces. 3-6.1.1 Fireblocking shall he provided to cut off concealed draft The minimum height of a guard rail shall be 34 in. (864 mm), openings between walls and partitions, including furred spaces, measured 90 degrees vertically from the leading edge of a tread, and the roof or floors so as to retard vertical movement of fire. -In where located along the open sides of stairways. v~...... ~:~"n^-.~, Such concealed spaces shall be constructed so that 2-17.1.2 Opening limitations. Required guardrails shall have floor-to-ceiling concealed spaces on one floor do not intermediate rails or ornamental closures that provide a maximum communicate with any concealed space on another floor level, any opening size that will not allow the passage of a sphere more than concealed spaces within the floor, or any concealed space in the 4 in. (102 ram) in diameter. The triangular openin~ formed by roof cavity. the bottom of a guardrail, a stair tread, and a stair riser shall have 3-6.1.2 Firgblockipg A b~"r'~er shall be installed to prevent a maximum size that will not allow the passage of a sphere more communication between adjacent concealed spaces. than 6 in. (153 ram) in diameter. 5.!.! V..n..cre "-.he b=rr'cr "= ".'er'fc:!, ~t =h^d! bc made of e~ter'cr COMMITTEE STATEMENT: This revision incorporates all of the ...... ~,w, cq=';v2c:=t :~ "~hzt u~c~ ~.n ~c ncarczt concerns of the proponent using clearer, more understandable code language. Part "(d)" of the proposal is not included in this IO revised text. These considerations are not found in current building codes. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 8 3-6.2 Openings for pipes and vents and other penetrations in VOTE ON COMMITTEE ACTION: walls, floors, and ceilings of furnace and water heater spaces shall AFFIRMATIVE: 7 be tight-fitted or ~fireblocke~. Pipes, vents, and other ABSTENTION: 1 penetrations shall be considered to be tight-fitted when they cannot be moved freely in the opening. Fireblocking shall

332 NFPA 501 -- MAY 2000 ROP

comnletelv fill the onening around the netl~tration of ~hall 3-7.1.1.2 and consider revising this paragraph to provide a greater comnletelv fill the cavity or concealed space into which the clarification of the application of the requirement. A proposed nenetration is made. Onlv noncombustible materials shall be revision could read: ~27.1.1.2 Cellulose-f'dl insulation, shall used to fireblock vent nenetrations. comply with 3-7.1.2." There is no need to restate requirements A-3-6.1 A concealgd space does not lose its character as a that are contained in 3-7.1.2. SUBM1TTER: Richard P. Thornberry, Cellulose Insulation concealed draft opening if it is filed with insulation or other Manufacturers Assn. material not allowed by Section 3-6.1. or if it is blocked by a RECOMMENDATION: Add a new Section %7 to read as follows ~T.cr material other than as required by %6.1. and renumber the remaining sections following accordingly: SUBSTANTIATION: This proposal allows for the use of other 3-7 Requirements for Thermal Insulating Materials. materials for fireblocking which have been successfully used under 3-7.1 Thermal insulation materials including any facings shall the 3 National Model Building Codes and the CABO One- and have a flame spread index of 25 or less and a smoke developed Two-Family Dwelling Code. The term "Fireblocking" is used to be index of 450 or less when tested in accordance with NFPA 255. consistent with present industry terminology. Criteria for testing Exception No. 1: Foam plastic thermal insulating materials loose-fill insulation provides a performance-based alternative for complying with Section 3-8. (Present Section 3-7). the use of such insulation. Both glass fiber and cellulose loose-fill Exception No. 2: The flame spread and smoke developed index insulations have already been so tested. requirements shall not apply to facings of insulation batts or Section %6.1.1 has been deleted since it may allow a barrier blankets installed in concealed spaces where the facing is in which does not meet the specifications for fireblocking in Section substantial contact with the unexposed surface of ceiling, floor, or 3-6.1. Section %6.1.2 has been deleted since it is redundant. wall finish. Guidance is provided in Section %6.2 on how to fireblock a Exception No. 3: Cellulose loose-fill insulation, which is not penetration while allowing an alternate method of filling the entire spray applied and which complies with Section 3-7.2, shall not be concealed space to cut off the concealed draft opening. Section required to have a flame spread index of 25 or less. A-%6.1 is revised to correlate with the proposed revisions to 3-7.2 Loose-fill insulation which cannot be mounted in the Section 3-6.1. NFPA 255 test apparatus without a screen or other artificial COMMITTEE ACTION: Accept in Principle in Part. supports shall have flame spread rating of 25 or less and a smoke Revise 3-6 as proposed and add limited combustible in 3-6.2 so developed factor of 450 or less when tested in accordance with that it reads as follows: CAN/ULG-S102.2-M88. I %6 Fireblocking, Exception: Cellulose loose-fill insulation complying with Section ] %6.1* Fireblocking shall consist of at least 1-in. (25.4-mm) 3-7.3. ] nominal lumber, 5/16-in. (8-ram) thick gypsum board, or the %7.3 Cellulose loose-fill insulation shall comply with CPSC 16 ] equivalent. Mineral wool or glass~fiber batts or blankets shall be CFR, Parts 1209 and 1404. Each package of cellulose loose-fill ] allowed as fireblocking where installed so as to remain securely in insulation shall be labeled as required by CPSC 16 CFR, Parts 1209 • place. Loose-fill insulation shall be allowed as fireblocking when and 1404. approved if it has been specifically tested in the form and manner 3-7.4 Exposed insulation installed in attics on the floor or ceiling intended for use to demonstrate its ability to remain in place and forming the lower boundary of the attic shall have a critical radiant restrict the spread of fire and the passage of hot gases similar to flux of not less than 0.12 watt/era 2 when tested in accordance with other fireblockingmaterials allowed by this section. NFPA 253. 3-6.1.1 Fireblocking shall be provided to cut off concealed draft SUBSTANTIATION: Proposed new Section 3-7 establishes fire openings between walls and partitions, including furred spaces, safety performance requirements for all types of insulation other and the roof or floors so as to retard vertical movement of fire. than foam plastic insulation which is presently regulated by Section Such concealed spaces shall be constructed so that floor-to-ceiling 3-7 (existing). Since fires can, and do, start in concealed spaces concealed spaces on one floor do not communicate with any containing insulation, it is appropriate to control the flammability concealed space on another floor level, any concealed spaces of insulation materials installed therein. These requirements can within the floor, or any concealed space in the roof cavity. readily be met by typical insulations on the market today, yet 3-6.1.2 Fireblocking shall be installed to prevent communication rovide a level of safety that should prevent new materials from between adjacent concealed spaces. ~ eing used that could pose a fire hazard. 3-6.2 Openings for pipes and vents and other penetrations in These requirements are very similar to those found in the 3 walls, floors, and ceilings of furnace and water heater spaces shall Model Building Codes in the U.S. and the GABO One- and Two- be tight-fitted or fireblocked. Pipes, vents, and other penetrations Family Dwelling Code. We believe they are especially important shall be considered to be tight-fitted when they cannot be moved for manufactured housing which traditionally use less substantial freely in the opening. Fireblocking shall completely fill the wall and ceiling covering materials and more flammable interior opening around the penetration or shall completely fill the cavity finishes than conventional construction. Limiting the flammability or concealed space into which the penetration is made. Only of insulation materials in concealed spaces will enhance fire safety noncombustible and limited combustible materials shall be used and help minimize fire growth in these structures. to flreblock vent penetrations. COMMITTEE ACTION: Accept in Principle in Part. A-%6.1 A concealed space does not lose its character as a Accept the proposed text of the submitter and reformat it so it concealed draft opening if it is filled with insulation or other reads as follows: material not allowed by Section 3-6.1, or if it is blocked by a 3-7 Requirements for Thermal Insulating Materials. material other than as required by 3-6.1. 3-7.1 Insulating materials other than Foam Plastic. COMMITTEE STATEMENT: The committee concurred with the 3-7.1.1 General. Exposed and concealed thermal insulation submitter's proposed changes except in 3-6.2. The term limited materials, other than foamplastic, shall have a flame spread index combustible was added to recognize the currentpractices that are of 25 or less, and a smoke developed index of 450 or less when being used in current construction techniques. By limiting the tested in accordance with NFPA 255, Standard Method of Test of installation to only non-combustible materials would be overly Surface Burning Characteristics of Building Materials. Tested restrictive and the proponent did not substantiate the reason for materials shall include any facings. Materials and methods this limitation. complying with the Sections 3-7.1.1.1, 3-7.1.1.2, and %7.1.2 shall be NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 14 accepted. VOTE ON COMMITTEE ACTION: %7.1.1.1 The flame spread and smoke developed limitations AFFIRMATIVE: 12 shall not apply to coverings and facings of insulation batts or NOT RETURNED: 2 Endthoff, Lee blankets installed in concealed spaces where the fadngs are in substantial contact with the unexposed surface of wall, floor, or ceiling finish. 3-7.1.1.2 Cellulose loose-fill insulation, which is not spray (Log #131) applied and which complies with 3-7.1.2, shall not be required to Committee: MAN-FIR have a flame spread index of 25 or less. 501- 33 - (3-7 (New) [3280.207, New]): Accept in Principle in Part 3-7.1.2 Loose-fill insulation. TCC NOTE: The Technical Correlating Committee on 3-7.1.2.1 Loose-fill insulation, other than cellulose loose-fill Manufactured Housing (MAN-AAC) directs that a public insulation, which cannot be mounted in the NFPA 255 test comment be submitted in the Correlating Committee's name apparatus without a screen or other artificial support, shall have a requesting that the Technical Committee on Ftre Safety for flame spread rating of 25 or less and a smoke development factor Manufactured Housing (MAN-FIR) review the proposed text of

333 NFPA 501 m MAY 2000 ROP

of 450 or less when tested in accordance with CAN/ULG-S102.2- into the living space environment, the smoke alarm closest to the M88. Cellulose loose fill shall comply with Section 3-7.1.2.2. air discharge shall be located no closer than 3 ft (914 ram) 3-7.1.2.2 Cellulose loose-fill insulation shall comply with, and horizontally from any discharge grille. each package shall be labeled, in accordance with CPSC 16 CFR, 3-8.2.6 A smoke alarm shall not be placed in a location that Parts 1209 and 1404. impairs its effectiveness. 3-7.1.3 Attic locations. Exposed insulation installed in attics on 3. Revise 3-8.3 to read as follows: the floor or ceiling forming the lower boundary of the attic shall 3-8.3 Operation. have a critical radiant flux of not less than 0.12 watt/cm 2 when 3-8.3.1 Smoke alarms shall be powered from a primary (ac) and tested in accordance with NFPA 253, Standard Method of Test for secondary (battery) source, or from a primary battery rated for a Critical Radiant Flux of Floor Covering Systems Using a Radiant 10-year life provided the smoke alarm ts listed for use with a 10- Heat Energy Source. year battery. 3-7.2 Foam Plastic. (Existing text of current 3-7.1 and 3-7.1.1 is 3-8.3.2 Smoke alarms shall be interconnected such that the renumbered.) operation of any one smoke alarm shall cause the alarm to sound 3-7.2.1 General. (Existing text of current 3-7.1 unchanged.) in all smoke alarms in the home. 3-7.2.2 Wall Assemblies. (Existing text of current 3-7.1.1 3-8.3.3 Visible notification appliances used in rooms where a unchanged.) hearing-impaired person(s) sleeps shall have a minimum rating of COMMITTEE STATEMENT: The Technical Committee 177 candela for a maximum room size of 14 ft by 16 ft (4.24 m by reformatted the comment so that it was easier to use and was more 4.88 m). For larger rooms the visible notification appliance shall in line with the style or layout that is currendy used in the be located within 16 ft (4.88 m) of the pillow. Visible notification document. appliances in other areas shall have a minimum rating of 15 NUMBER OF COMMrVFEE MEMBERS ELIGIBLE TO VOTE: 14 candela. In sleeping rooms where the visible notification VOTE ON COMMITTEE ACTION: appliance is mounted more than 24 in. (610 mm) below the AFFIRMATIVE: 12 ceiling, a minimum rating of 110 candela shall be permitted. NOT RETURNED: 2 Endthoff, Lee Listedtactile devices shall also be permitted. Visible or tactile devices need only be provided when ordered by customer. Visible or tactile devices are not required to operate from secondary power. 4. Revise 3-8.4 as follows: 3-8.4 Installation. (Log #161) 3-8.4.1 Smoke alarms shall be mounted on the ceiling at least 4 Committee: MAN-FIR in. (10 cm) from the wall, or on a wall with the top of the detector 501- 34 - (3-8 [3280.208]): Accept in Principle in Part not less than 4 in. (10 cm) or more than 12 in. (30 cm) below the TCC NOTE: The Technical Correlating Committee on ceiling. Manufactured Housing (MAN-AAC) directs that a public 58.4.2 In rooms with sloped ceilings, smoke alarms shall be comment be submitted in the Correlating Committee's name located on the ceiling within 3 ft. (0.9 m) of the highest point. requesting that the Technical Committee on Fire Safety for 58.4.3 Smoke alarms that receive primary operating power from Manufactured Housing (MAN-FIR) consider the addition of an the home electrical system shall be mounted on an electrical outlet appendix note to 3-8.2.2 and 3-8.2.3 to provide a clarification of box and connected by a permanent wiring method to a general w'l/~tt is considered peaked or sloped ceilings. NFPA 72, National electrical circuit. There shall be no switches in the circuit to the Fire Alarm Code, contains information associated with the detector between the overcurrent protective device and the installation of smoke detectors or smoke alarms on these detector. Smoke alarms shall not be powered from a circuit particular ceiling layouts. protected by a ground-fault circuit interrupter. The Technical Committee is requested to review Paragraphs 3- 5. Revise 3-8.5 as follows: 8.2.2 and 3-8.2.3 and include the term "horizontally" as shown in 3-8.5 Labeling. Smoke detectors and smoke alarms shall be the revisions to these paragraphs of the 1999 edition of NFPA 501. labeled as conforming with the requirements of UL 217, Single and The Technical Committee is also requested to review paragraph Multiple Station Smoke Alarms or ANSI UL 288-1989 Smoke 3-8.7.2 and relocate the last two sentences of this paragraph to a Detectors for Fire Protective Signaling Systems. new 3-8.7.3 (c). This action is for clarification as this information SUBSTANTIATION: Beginning in 1937, NFPA first addressed a is more appropriate to be a stand alone requirement then under number of items dealing with fire safety in trailer coaches and the provisions of 3-8.7.2. mobile homes. In 1977, NFPA 501B, the predecessor document to SUBMITTEI~ John Lake, Marion County Fire-Rescue NFPA 501, 1977 edition was withdrawn by NFPA given the RECOMMENDATION: 1. Revise 3-8 to read as follows: preemptive nature of a set of regulations for these units that came 3-8 Fire Detection Equipment. from the U.S. Department of Housing and Urban Development 3-8.1 General. At lease one smoke alarm shall be installed in the 1977. home at the location(s) specified in 3-8.2, arranged to operate as When the current edition of NFPA 501 was prepared, work was specified in 3-8.3, installed as specified in 58.4, and labeled as underway at the National Institute of Standards and Technology specified in 3-8.5. (NIST) on behalf of the USAF-HUD Partnership on Fire Safety in 2. Revise 3-8.2 to read as follows: Manufactured Housing (of which NFPA is now a member) to 3-8.2 Smoke Alarm Locations. establish optimum locations for smoke alarm placement in 3-8.2.1 One smoke alarm shall be installed to protect the living manufactured housing units. The report also detailed specific room and kitchen space, located as far away from the kitchen and provisions that recognize current technological advances in this cooking appliances as possible. Where located within 20 ft (6.1 area concerning operation, reliability and power supply m) horizontal!y from cooking appliances, the smoke alarm shall arrangements. This report concluded that-a number of changes incorporate a temporary silencing feature. should be put forth including: 3-8.2.2 Where there are stairs leading to other occupied levels, a • Smoke alarms should be located in the living room space. smoke alarm shall be located near the top of each such stairway so This alarm is also intended to protect the kitchen space and is to that smoke rising in the stairway cannot be prevented from be located in such a manner so as to not to result in nuisance reaching the alarm by an intervening door or obstruction. For alarms due to operation of the cooking appliances stairways leading up from a basement, the smoke alarm shall be * A smoke alarm should be located near the top of the stairs for located on thebasement ceiling near the entry to the stairs. multi-level manufactured housing units. 3-8.2.3 A smoke alarm shall be installed in each sleeping room. • Smoke alarms should be mounted on the ceilings at least 4 in. 3-8.2.4 Smoke alarms shall not be located within kitchens or away from the wall or on the wall with the detectors being at least 4 arages, or in other spaces where temperatures can fall below 40°F in. but not more than 12 in. below the ceiling. °(3) or exceed IO0°F ($8°C). Smoke alarms shall not be located • Smoke alarms should be interconnected such that operation of within 3 ft (0.9 m) horizontally from the door to a kitchen, a one alarm will activate the others. bathroom containing a tub or shower, or a supply grille of a * Smoke alarms installed in units with sloped ceilings are to have forced air heating or cooling system. the alarm installed on the ceiling within 3 ft of the highest point of 3-8.2.5 Where a home is equipped or designed for future the ceiling. installation of a roof-mounted evaporative cooler or other In June of 1998, the us Department of Housing and Urban equipment discharging conditioned air through a ceiling grille Development selected NFPA to be the organization to develop and maintain the construction standard for manufactured housing in the US. In a list of issues that the Department would like to see considered in the near future, is the entire subject of smoke

334 NFPA 501 -- MAY 2000 ROP detector and fire alarm requirements for manufactured housing. 3-8.2.2 Peaked Ceilings. Smoke alarms or smoke detectors This TIA will address that particular aspect for HUD. mounted on a peaked ceiling shall be located within 36 in. (914 At a very recent hearing of the US House of Representatives mm) of the peak, but not closer than 4 in. (102 ram) to the peak. Banking Committee, a representative of the manufactured housing 3-8.2.3 Sloped Ceilings. Smoke alarms or smoke detectors industry, responding to a question indicated that issues mounted on a sloped ceiling having a rise greater than 1 ft in 8 ft surrounding smoke alarm placement and location were high on (1 m in 8 m) horizontally shall be located within 36 in. (914 mm) the industry list of items to be addressed. This TEA will address of the high side of the ceiling, but not closer than 4 in. (102 ram) that particular aspect of the industry. from the adjoining wail surface. Another conclusion of the previously mentioned NIST report is 3-8.2.4 Wall Mounting. Smoke alarms or smoke detectors that, K implemented, the detailed, proposed changes, which are mounted on walls shall be located not closer than 4 in. (102 ram) now in the ROP for NFPA 501 (1999 edition), correlation will be from the adjoining ceiling surface, not farther than 12 in. (305 achieved with the smoke alarm installation provisions contained mm) fTom the adjoining ceiling surface, and not farther from the within NFPA 72, National Fire Alarm Code. This TEA will address adjoining ceiling than specified in the manufacturer's installation that particular aspect of maintaining consistency within the NFPA instructions. family of codes and standards. 3-8.2.5 Electrical Connection. Smoke alarms and smoke The NIST report also concludes that acceptance of these detectors that receive primary power from a commercial light and provisions will be giving equal weight and value to the smoke i power source shall be mounted on an electrical outlet box and alarm requirements in all types of housing units, whether they be connected by a permanent wiring method in accordance with manufactured housing or stick-built homes. NFPA 70, National Electrical Code. There shall be no switches in Finally, recognition of state-of-the-art smoke alarm technology the circuit between smoke alarms or smoke detectors and the and requirements for same will result in a higher level of fire overcurrent protective device of that circuit. Smoke alarms or protection for these units which in some states, outpace the smoke detectors shall not receive their power from a circuit that is construction of single family stick-built homes. This TEA will protected by a ground-fanlt circuit-interrupter. ultimately benefit the consumers who reside in these units by not 3-8.3.1 Locations. single-station smoke alarms shall be installed only making them safer, but also by offering an economical in the following locations: alternative to the current rules for smoke alarm placement. (a)* In all sleeping rooms; A summary of the changes to each section of NFPA 501, which (b) Outside of each separate sleeping area, in the immediate would be impacted by dais TIA, are as follows. These are identical vicinity of the sleeping rooms; to the information contained in the Committee Proposal which (c) On each additional story of the manufactured home will be addressing this issue for the 1999 edition of NFPA 501. including basements. 1. This was done for formatting purposes to highlight the 3-8.5.2 Specific Location Requirements. applicable sections of the document pertaining to smoke (a) Smoke alarms and smoke detectors shall be located in areas detectors. The current 3-8.2.1 was revised into two parts (3-8.2.1 where ambient conditions are within the limits specified by the and 3-8.2.2) to address the method of installing smoke alarms manufacturer. between the sleeping areas and the rest of the home to intercept (b)* Smoke alarms or smoke detectors installed within 20 ft (6.1 smoke from nighttime fires originating in the common space. The m) horizontal path of a cooking appliance shall be equipped with distance criteria provided in 3-8.2.1 addresses the common source an alarm silencing means or be of the photoelectric type. of nuisance alarms from normal kitchen activity. 3-8.2.2 was added (c).Smoke alarms or smoke detectors shall not be installed to address those cases where a manufactured home may have a within 36 in. (914 ram) from a door to a bathroom or kitchen, or second floor application. the supply grill of a forced air headng or cooling system. 3. 3-8.2.3 was added for consistency with other documents that (d)* A manufactured home designed for the future installation require this protection for residential dwelling units. The current of a roof-mounted evaporative cooler or other equipment 3-8.2.2 was revised with 3-8.2.4. The first sentence was added to be discharging conditioned air through a ceiling grill into the living consistent with the conditions of the listing of residential smoke area shall not have smoke alarms or smoke detectors installed alarms as found in UL 217. The second sentence updated the within 36 in. (914 mm) horizontal path of the future discharge current provision as found in NFPA 72 to limit the nuisance opening. alarms. (e) A manufactured home designed for the installation of a 4. Current 3-8.4 was updated with the revised 3-8.3.1 which deals basement, a junction box for the installation of a smoke detector with the requirement for two independent sources of power as shall be provided. required in NFPA 72. The allowance of smoke detectors powered 3-8.4 Visible Notification Appliances. Visible notification by 10 year battery recognizes their functional equivalency as the appliances installed for the hearing impaired if provided shall power will last the expected life of the product. It is recognized comply with the following requirements. Visible notification that there are no devices currently available but there are ones appliances are riot required to operate from a secondary power under development. Proposed 3-8.3.3 was added for those homes source. which may have persons with hearing impairments. These (a) Visible notification devices shall be installed that produce at specifications are consistent with those of NFPA 72. Proposed 3- least 110 cd at the pillow in sleeping rooms, and 15 dc in all other 8.4.1 was added to address the installation prohibition of smoke spaces. alarms from being installed within the "dead air space". The (b) Visible notification appliances located on the ceiling over distance criteria proposed 3-8.4.1 and 3-8.4.2 are consistent with the bed and within 16 ft (4.88 m) of a sleeping occupant having a those found in NFPA 72. The proposed 3-8.4.3 contains the same light output rating of at least 177 cd shall be acceptable. information as found in the current 3-8.4 but has been editorially (c) Visible notification appliances in a sleeping room mounted revised for clarification purposes. more than 24 in. (610 m) below the ceiling and within 16 ft (4.88 5. Current 3-8.5 was editorially revised for clarification as noted m) of the pillow having a minimum rating of 110 cd shall be in 3-8.3.2. The revision to the current 3-8.3 Labeling is proposed acceptable. as 3-8.5 was to incorporate the .appropriate reference for smoke 3-8.5 Interconnectlon. Smoke alarms shall be interconnected detectors for use with fire protective signaling system. such that the operation of any one smoke alarm shall cause the COMMITTEE ACTION: Accept in Principle in Part. alarm to sound in all smoke alarms within the manufactured Accept the proposed text and reformat it so that it reads as home. follows: 3-8.6 Power Sources. Smoke alarms shall be powered from the 3-8 Fire Warning Equipment. commercial light and power source along with a secondary battery 3-8.1 General. Approved, single-station smoke alarms and source capable of operating the device for at least 7 days in the smoke detectors shall be installed in a manufactured home as normal condition followed by 4 minutes of alarm. Alternatively, specified in Section 3-8. Smoke detection systems installed in smoke alarms shall be powered by a non replaceable primary conformance with NFPA 72, National Fire Alarm Code, shall be battery capable of operating the device for at least 10 years acceptable. followed by a 4 minutes of alarm, followed by 7 days of trouble. 3-8.2 Installation. Smoke alarms and smoke detectors shall be 3-8.7 Maintenance, Testing, and Information. installed in accordance with the manufacturer's listing and 3-8.7.1 Following installation, smoke alarms shall be functionally instructions, and shall comply with the following parameters: tested in accordance with the alarm manufacturer's instructions. 3-8.2.1 Flat Ceilings. Smoke alarms or smoke detectors mounted 3-8.7.2 Fire warning equipment shall be provided with a on a flat ceiling shall be located no closer than 4 in. (102 ram) convenient means for testing its operation by the homeowner. from the adjoining wall surface. Unless otherwise recommended by the manufacturer, smoke alarms shall be replaced when they fail to respond to tests. Smoke

335 NFPA 501 ~ MAY 2000 ROP detectors shall not remain in service longer than 10 years from the (Log #35) date of installation. Committee: MAN-FIR 3-8.7.$ Home manufacturers shall provide specific smoke alarm 501- 35 - (3-8.1 [3280.208(a)] ): Accept in Principle manufacturer instructions to: SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) (a) The manufactured home installer, homeowner, or other RECOMMENDATION: Revise Section 3-8.1 to read as follows: responsible parties for the inspection and testing of smoke alarms 3-8.1 General. At least one smoke alarm (a single-station alarm during manufactured home installation. device is acceptable) shall be installed in the home in the (b) The homeowner describing the operation, maintenance, location(s) specified in 3-8.2. At least one of the smoke alarms method, and frequency of testing of the smoke alarms. shall have a battery backup. 38.8 Labeling and Listing. Smoke alarms and smoke detectors SUBSTANTIATION: This recommended change was originally shall be listed and approved to standards that verify the required submitted to HUD by the MHCSS Consensus Committee on 2-28- performance. Smoke alarms conforming to ANSI/UL 217, 96, but no action has been taken. In the case of an electrical Standard for Safety, Single and Multiple Station Smoke Alarms; failure, there would be a battery backup system. smoke detectors conforming to ANSI/UL 268, Standard for Safety, COMMITTEE ACTION: Accept in Principle. Smoke Detectors for Fire Protective Signaling Systems; and visible No action required signaling appliances conforming to ANSI/UL 1971, Signaling COMMITTEE STATEMENT: The provision associated with Devices for Hearing Impaired, shall be considered acceptable. battery back u~o is currently addressed in 3-8.3.1. Section 3-8.3.1 A-3-8.3.1 A sleeping area is considered those rooms which are currently reqmres all detectors to have a battery back up. used for sleeping andother auxiliary rooms adjacent to the NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 14 sleeping room such as sitting areas or other suite arrangements. VOTE ON COMMITTEE ACTION: A-3-8.$.2(b) The measurement of the horizontal pathis AFFIRMATIVE: 12 determined by measuring the normal available path of travel the NOT RETURNED: 2 Endthoff, Lee products of combustion can follow in a particular layout. It is not the intent to take this measurement as a radius of 20 ft from the detector not considering any building walls of configuration. A-3-8.3.2 (d) The measurement of the horizontal path is (Log #25) determined by measuring the normal available path of travel the Committee: MAN-FIR products of combustion can follow in a particular layout. It is not 501- 36 - (3-8.4.1 [3280.208(b)(1)] ): Reject the intent to take this measurement as a radius of 3 feet from the SUBMITTER: Richard Comes, Norton Fire Dept., MA detector not considering any building walls of cotxfignration. RECOMMENDATION: Revise text to read: Add the following definitions to Section $-2: "A smoke alarm shall be installed on I~-I ...... I1\ / (the ceiling) in Notification Appliance. A fire alarm system component such as the hallway..." a bell, horn, speaker, light, or text display that produces audible, SUBSTANTIATION: Installation on the ceiling will avoid dead tactile, or visible outputs, or any combination thereof. air space problems associated with high on wall mountings. There Single Station Alarm. A detector comprising an assembly is also concern with draft and vent currents both natural and incorporating a sensor, control components, and an alarm mechanical pulling smoke away from the wall mounted unit. Most notification appliance in one unit operated from a power source other new construction codes call for ceiling mounted detectors. either located in the unit or obtained at the point of installation. Uniformity would held inspectors. Smoke Detector. A device that detects visible or invisible COMMITTEE ACTION: Reject. particles of combustion. COMMITTEE STATEaMENT: The current practice for installation Visible Notification Appliance. A notification appliance that is addressed in 3-8.4.1 and permits the installation on ceilings and alerts by the sense of light. walls. The manufacturer's installation instructions establish the COMMITTEE STATEMENT: It is recognized that the material in specific installation requirements for a smoke alarm as established this proposal was derived from the revisions made to the 1999 by its listing. These instructions are specific to the smoke alarm edition in Section 3-8. The text was reformatted to be more user and permit installation on ceilings and walls depending on the friendly in layout and provide greater clarification for particular type of smoke alarm. This proposal would be overly restrictive requirements. Appendix items were added to assist the document without any substantiation. user so that the intent of the particular application is understood. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 14 Other revisions incorporate the recent actions involving the VOTE ON COMMI~'EE ACTION: changes to the 1999 edition of NFPA 72. AFFIRMATIVE: 12 NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 14 NOT RETURNED: 2 Endthoff, Lee VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 12 NOT RETURNED: 2 Endthoff, Lee COMMENT ON AFFIRMATIVE: (Log #105) BROWN: Secdon 3-8.3.2. Revise proposed text to read: Committee: MAN-FIR 501- 37- (3-9.1 (New) [3280.209, New]): Reject b~ ..... nt, ~j~n ...... a ...... e ..... tot SUBMITTER: Northern and Southern Regional Fire Code Dev. Committees (e) A manufactured home designed for the installation of a RECOMMENDATION: Add a new 3-9.1 to read: basement shall be provided with a junction box for the installation 3-9.1 All new manufactured housing shall be protected of a smoke detector as required by Section 3.8.3.1 (c). throughout by an approved automatic sprinkler system installed in I believe this revised text reads as better code language without accordance with NFPA 13D, Standard for the Installation of changing the intent of the requirement. Also, it would refer you 1S~anrinkler Systems in One- and Two-Family Dwellings and back to Section 3.8.1(c) for basement smoke alarms. As noted ufactured Homes. earlier, the word "have" has been replaced with the word "home." SUBSTANTIATION: The fire death rate in post-standard Section 8-3.4. Revise proposed text to read: manufactured homes is lower than in pre-standard homes but they 3-8.4 Visible Notification Appliances. Visible notification still have an alarming death rate. The installation of automatic appliances installed for the hearing impaired "~ Fr*-'~cd shall sprinkler systems will reduce this death rate in new homes. The comply with the following requirements. Visible notification report on "Manufacturer Home Fires in the U.S. 1980-1996" by applicances are not required to operate from a secondary power John IL Hall, Jr., of the NFPA Fire Analysis and Research Division source. concludes the following: 3-8.4 Visible Notification Appliances, If provided. Visible ° Comparison Between Manufactured Homes and Other notification, a.papliances installed, for the. hearing impaired if Dwellings. These figures indicate that manufactured homes have a prowded shall comply with the follovang requirements. Visible fire incident rate per 100,000 housing units substantially lower than notification appiicances are not required to operate from a the rate for other dwellings, but their fire death rate per 100,000 secondary power source. housing units is 77-102 percent higher. Table 4 also shows that the By moving the term "if provided" to the front of the sentence, I rate of fire deaths per 100 fires is 2 1/2 times higher in believe this revised text reads as better code language without manufactured homes than in other dwellings. changing the intent of the requirement. • More than one-third of fires in post-standard manufactured homes are reported as having no smoke alarmpresent. For 1996 fires, the percentage was 39.0 percent and the fraction only

336 NFPA 501 -- MAY 2000 ROP dropped below 50 percent since 1986. Since all post-1976 tenants a much safer environment in manufactured housing by manufactured homes should be leaving the factory with factory- being able to have most emergencies, especially fires, attended to installed smoke alarm, or at least factory-installed alarm housing in a more rapid response. The quicker the response, the safe the and separate smoke alarm units easily installed, this seems to environment for the tenants of manufactured housing. For indicate a severe problem after the manufactured home leaves the example: When an emergency service or fire department turns manufacturer. onto the street or road of the emergency, without having to read * He concludes on three things starting on page 26 (above house numbers, the flashing strobe will be their main target mentioned report) they are: designation, which saves time. In most cases a few seconds quick • Missing smoke alarms in post-standard manufactured homes is response can and will save lives. extremely distressing. In today's time and the increase of emergency demands, child • The fire safety advantage of post-standard manufactured homes abuse, spouse abuse, drug abuse, and minor fires that lead to should be more widely publicized so that owners of pre-standard major fires, a method of providing or assisting in having a more manufactured homes are encouraged to switch as soon as rapid response is becoming a necessity. Even with the enhanced possible... 911, house numbers, or landmarks have to be seen, but with the • Because the distinctive problem of manufactured home fires is bright white strobe even in foggy conditions, will provide all that their severity, not their frequency, they may present a particularly needs to be visible for the fire departments, law enforcement and appropriate setting for a residential sprinkler system. (Factory EMS services to look for. Therefore, the use and requirement of installation would be very cost-effective.) an electronic locating device in manufactured housing or mobile The only effective means to protect occupants of manufactured home housing will be a giant step forward in making various homes is by the installation of smoke alarms and automatic environments of living safer for all ages and occupants. sprinkler system. Residential sprinkler systems when installed in SUBSTANTIATION: Basically the problem and substantiation new homes are economically feasible. With the new edition of for the proposal can easily be identified easily by the use of a NFPA 13D, it is now allowable to we 1/2 in. piping further scanner, because most of the emergencies identified on a scanner lowering the installation costs. is full of EMS, police and fire departments trying to locate the Note: Supporting material is available for review at NFPA emergency, especially during the night. One of the most Headquarters. rominent problems, I have identified by discussing with various COMMITTEE ACTION: Reject. ~ MS, police and fire departments is the locating of the emergency COMMITTEE STATEMENT: In reviewing the revised statistics or fire. Many fire chiefs have expressed that the use of the from Dr. John Hall's report entitled, "Fires in Manufactured electronic locating device would help their operation a great deal Homes to 1996" it shows that post HUD units are similar to one- and provide a safer living environment for homeowners and and two-family dwellings. The new text added to the report is as tenants of manufactured homing units. One of the members of a follows: "Note: Both manufactured homes and other dwellings local fire department expressed that a locating device would help appear to have a 'new home' effect; lower fire and loss rates occur in locating fires and emergencies because he mentioned an just after construction. Statistics for post-Standard manufactured incident that if this device had been available earlier, several homes are significantly affected by that new home effect, but incidents and fires would have had minimum damage rather than statistics on other dwellings by age cannot be isolated. To total loss and major damage. illustrate a comparison without this effect, calculate post-Standard Once the use of this type device becomes common place within unit fire rates based solely on units built from 1975 through 1984. manufactured housing, the tenants will live in a safer environment. ff this is done, the estimated fire incident rate per 1,000 housing Locating emergencies, fires of minor nature that become major units rises to 3.1, and the associated fire death and injury rates per fires, and other life threatening situations, with a more rapid 100,000 housing units also rise. The post-Standard death rate is response, will save lives and property of individuals in then comparable to the low end of the estimated death rate for manufactured homes. other dwellings; the injury rate remains considerably lower." An NOTE: Presently there is such a device available on demand. item noted in the substantiation of the proposal notes that a major This device was developed in Kentucky. For the purchase of this problem is the missing smoke alarms. This issue should be device you can contact~ addressed with educational programs and not addressed by the Cyber-Tech of Kentucky, 562 Hwy 80 W., P.O. Box 194, Combs, installation of a fire sprinkler system. The documentation KY 41729. presented does not establish a need to single out on type of Contact Person is: Dr. (Mr.) Lynn Pennington (606) 439-$740 (e- dwelling over another type of dwelling. mail): [email protected] NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 14 OR VOTE ON COMMITTEE ACTION: Cyber-Tech of Kentucky, 2137 Meathome Fork, Canada, KY 41519 AFFIRMATIVE: 12 Contact Person is: Mr. Bill Bonds (606) 353-1944 (e-mail): NOT RETURNED: 2 Endthoff, Lee [email protected] Note: Supporting material is available for review at NFPA Headquarters. COMMITTEE ACTION: Reject. (Log #11) COMMITTEE STATEMENT: The committee determined that this Committee: MAN-FIR application is more of a local installation requirement than that 501- 38- (3-10 [3280.210, New]): Reject which should be addressed on a national level. It is noted that this SUBMITTER: R. Lynn Pennington, Cyber-Tech of Kentucky provision, if accepted, would only be applicable to new RECOMMENDATION: This is a new proposal for NFPA 501, installations. The application of this device, if determined by the Standard on Manufactured Housing. To require an emergency local authorities to be necessary, would then be appropriate to and fire locating device to be placed in each manufactured unit. have it applicable to new and existing facilities. It is also The unit will activate a bright strobe light that is very visible at recognized that not all areas of this country are covered by 911 night and visible in day time, when 911 is dialed. The unit will emergency service. It is also noted that a flashinglight is not an also activate when other telephones that are connected to the same established universal symbol for an emergency. Local authorities line are used, such as a portable phone in the back yard. The currently address the identification of properties in regard to strobe light once activated will continue to be activated until it is signage and lighting. It is also recognized that there are many reset by the fire emergency team or response team. Also, to insure different scenarios that include emergency service responses and proper functioning, the unit will have a test switch that will allow a arrangement or placements of manufactured homes in a test number to be dialed, such as 211 to test the strobe light community. Each of these elements need to be reviewed and (white). The use of the strobe light, being rural or city areas will addressed on their merit and as it may relate to the particular local. provide a quicker response for fire departments to locate the jurisdiction, and the local jurisdiction is in the best position to emergency especially when there is no visible smoke to direct the make this judgment. fire departments to the manufactured home can enable the fire NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 14 departments to prevent the fire from becoming a devastating fire or VOTE ON COMMITTEE ACTION: life threatening fire. Such slow fires such as a hot burning smell of AFFIRMATIVE: 12 a melting wire, small kitchen fire or smoldering ash from a NOT RETURNED: 2 Endthoff, Lee tobacco substance dropped on the furniture or carpet or clothing or from a small electrical appliance. The electronic locating device can help locate other emergencies since many areas 911 EMS systems function in conjunction with many fire departments. The use of a locating device activated by dialing 911 will allow

337 NFPA 501 -- MAY 2000 ROP

(Log #6) (Log #36) Committee: M_AN-FIR Committee: MAN-FIR 501- 39 - (3-10 (New) {3280.210, New] ): Reject 501- 40 - (3.10 (New) [3280.210(a) through (c), New]): Reject SUBMITTER: John Lake, Marion County Fire-Rescue SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) RECOMMENDATION: 1. I propose the following change to RECOMMENDATION: Add a new Section 3.10 to read as follows: read: 3-10 Attached Garages 3-10 Fire Sprinkler System. 3.10.1 Attached Garage Requirements. When a manufactured 3-10.1 This section establishes minimum requirements when a home is designed and built for the purposes of having a garage fire sprinkler system is installed in a manufactured home. Un!e~ attached on site, the manufacturer shall prepare the manufactured

...... 1 ...... OJ ...... "I ...... i~ ...... 1 ...... home for the garage attachment in the following manner: 3.10.1.1 Opening Protection. An opening from a private garage directly into a room used for sleeping purposes shall not be 2. also propose the following change to read: permitted. No windows shall be permitted to be located in the 3.10.2 When an automatic sprinkler system is inst,alled in a exterior wall of a manufactured home where a garage is to be manufactured home it shall be installed and tested in accordance attached. Other openings between the garage and the with NFPA 13D, Standard for the Installation of Sprinkler Systems, manufactured home shall be equipped with solid wood doors not in One- and Two-Family Dwelling and Manufactured Homes. less than 1-3/8 in. (35 mm) in thickness or a listed 20-minute fire 3.10.3 The manufacturer shall permanently affix the certificate rated door. shown in Figure ~ !0.3 3.10.4 adjacent to the data plate. 3.10.1.2 Fire Separation Required. The garage shall be SUBSTANTIATION: 1. Substantiation: completely separated from the living space of a manufactured This proposal is being submitted recognizing a proposal on this home, including its attic and crawl space areas, by means of 1/2 issue has not been acted on by the membership due to time in. (13 ram) gypsum board or its equivalent applied to the entire constraints from an expedited cycle. area of the manufactured home where the garage is to be attached. The proposal is inconsistent with other sections of this standard Exposed interior type gypsum board shall be protected from and other NFPA standards. The inclusion of this phrase serves no moisture during transit to the site where the garage is to be purpose other than to attempt to subvert the authority of local attached. Penetrations shall be firestopped by an approved legislative body and place barriers to fire safety with regard to method. requirements proposed by an authority having jurisdiction for a 3.10.1.3 Prohibited Openings. Exhaust vent, combustion air vent, given hazard class. The proposal also seems to indicate the return air vent, condensation line, or any other vent or opening requirements for the fire sprinkler system are mandatory and is which is capable of conveying air, liquid or gases into or out of the proposing an exception to sentence one. These are conflicting manufactured home or to or from any appliance or fLxture phrases and where sentence one is clear and speaks to when a connected with the manufactured home or garage, shall not be system is installed, how it will be done, sentence two makes it located in an area where a garage is intended to be attached. unclear by speaking to when a sprinkler system would be required. SUBSTANTIATION: This recommended change was originally 2. Substantiation: submitted to HUD by the MHCSS Consensus Committee on 12-26- This change would make the numbering consistent with how the 90, but no action has been taken. The need for the proposed figure is numbered. addition to Section 3.10 of the NFPA 501 Standard is based on the COMMITTEE ACTION: Reject. ability of the manufactured home industry to provide new and COMMITTEE STATEMENT: The committee believes that the innovative designs and features which were not contemplated when provisions of this requirement are still valid as developed for the the Standard was originally written. 1999 edition of NFPA 501. Documentation from Dr. John Hall's The proposed addition of Section 3-10 to the 501 Standard will report, "Fire in Manufactured Homes to 1996" does not establish provide reasonable public safety when a manufactured home is the need to make this provision for fire sprinklers only applicable designed for and intended to have an attached garage. The to manufactured homes. It is recognized that by not establishing proposed requirements specifically address fire separation this criteria that it be applicable to all dwelling units. The current limitations, protected openings and prohibited openings at the practice of isolating manufactured homes for a particular area of the intended garage location. requirement would exist. It is also recognized that this material This proposed addition to the 501 Standard not only provides will be incorporated into the HUD document in the future. The consistent and uniform safety standards within the manufactured HUD document is a preemptive document, and this will further home industry, but also reasonably consistent with most national establish an effective means to address the protection required for building codes. One preemptive standard for the preparation of all one- and two-family residential housing facilities. all manufactured homes intended to have garage attachments will NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 14 eliminate the wide variety of code requirements used by the various VOTE ON COMMITTEE ACTION: local building authorities throughout the country. Between the AFFIRMATIVE: 11 consistency and safety this proposed change provides, the NEGATIVE: 1 marketability and acceptance of manufactured homes should NOT RETURNED: 2 Endthoff, Lee increase as permanent installations and manufactured home EXPLANATION OF NEGATIVE: subdivisions are encouraged through this proposal. lAKE: This Committee Action was taken in order to subvert the COMMITTEE ACTION: Reject. authority of the AHJ to make decisions concerning the levels of COMMITTEE STATEMENT: The provisions of this proposal is protection for their individual jurisdiction. something a manufacturer does not have control over. It is a local In the discussions it was related there are several authorities that installation application that is addressed by the local inspection would take the original proposal for sprinkler systems and make application and permit process. This provision could establish them mandatory. It was the feeling of the majority present that this that the manufacturer could be held accountable for something action was necessary to stem the tide of a few renegade authorities. that could be added at a later date such as window placement and I don't feel this is appropriate as there are several avenues already type of wall construction required. The minimum construction available to correct this situation. requirements associated with this activity are different between The first of these being the abilit~ under NFPA 1 to appeal the jurisdictions and is best addressed at this level. decision of the AHJ found in Secuons 1-7 and 1-7.6.1. Provisions NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 14 like these are found in most, if not all model codes. There are VOTE ON COMMITTEE ACTION: also provisions found in Part 3282 (Manufactured Home AFFIRMATIVE: 12 Procedural and Enforcement Regulations and Enforcement NOT RETURNED: 2 Endthoff, Lee Interpretative Bulletins) that address an appeals process. I feel the processes that are already available are adecjuate and should be used rather than creating a mandatory reqmrement for occupancies not covered by this standard. The original proposal found in the 1999 ROP Spring Meeting (Log #CP1) should be adopted.

338 NFPA 501 -- MAY 2000 ROP

(Log #ta) I (d) method and frequency of system testing, and Committee: MAN-FIR (e) proper fire sprinkler maintenance. 501- 41 - (3-10.4 [3280.210, New]): Accept in Principle COMMITTEE STATEMENT: The reformatted provision was done SUBMITTER: John Lake, Marion County Fire-Rescue for clarification purposes and to assist the user of the document. RECOMMENDATION: I propose the following change to read: This action should fulfill the intent of the submitter. 3-10.4 Home manufactures shall provide specific instructions to NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 14 setup crews or other responsible parties for the inspection and VOTE ON COMMITTEE ACTION: testing of the fire sprinkler system during manufactured home AFFIRMATIVE: 12 setup. The manufacturer shall specify on the certificate required NOT RETURNED: 2 Endthoff, Lee by 3-10.3 the minimum required water supply in both pressure (psi) and flow (gpm), in accordance with ~hc desit,n criteria of NFPA 13D. SUBSTANTIATION: Substantiation: (Log #37) This specifies what criteria is used to determine the appropriate Committee: MAN-STR water supply designated by the manufacturer. 501- 44 - (4-1(b) [3280.30(b)1 ): Accept COMMITTEE ACTION: Accept in Principle. SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) Revise 3-10.2 as follows: RECOMMENDATION: Revise Section 4-1 (b) to read as follows: 3-10.2 When an automatic fire sprinkler system is installed in a 4-1 Scope. This chapter shall cover the minimum requirements manufactured home it shall be desig-ned, installed and tested in for materials, products, equipment, and workmanship needed to accordance with NFPA-13D, Standard for the Installation of ensure that the manufactured home will provide the following: Sprinkler Systems in One- and Two-Family Dwellings and (a) Structural strength and rigidity Manufactured Homes. I (b) Protection against corrosion, decay, insects, rodents, and COMMITTEE STATEMENT: The provision addressing the design other similar destructive forces of a fire sprinkler system was incorporated into 3-10.2. This was (c) Protection against hazards of windstorm done for clarification and ease of use. This should meet the intent (d) Resistance to the elements of the submitter. (e) Durability and economy of maintenance. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 14 SUBSTANTIATION: This recommended change was originally VOTE ON COMMITTEE ACTION: submitted to HUD by the MHCSS Consensus Committee on 2-28- AFFIRMATIVE: 12 96, but no action has been taken. Hantaviral pulmonary syndrome NOT RETURNED: 2 Endthoff, Lee (HPS) is a deadly, fast-acting disease that was discovered after an outbreak in May 1995 in the Four Comers area of New Mexico. HPS is caused by hantavirus found in urine and droppings of rodents, specifically several types of mice. Cases of HPS have (Log #CP200) occurred in 21 states and Canada. There is no sure treatment for Committee: MAN-FIR HPS and the mortality rate is greater than 50 percent. 501- 42 - (3-10.5): Accept The best available preventive actions are those that minimize SUBMITTER: Technical Committee on Fire Safety for contact between humans and rodents. One of the most important Manufactured Housing preventions is to discourage mice from colonizing home and work RECOMMENDATION: In 3-10.5 add "site" before installer so that environments. it reads: Research has shown that most cases of HPS in New Mexico have 3-10.5 Upon final connection at the home site of the fire occurred in persons who live in manufactured housing. It is sprinkler system to the water supply per the manufacturer's generally much easier for mice to gain access to manufactured instructions, the adequacy of the water supply shall be verified, and housing than other types of homes. Since mice can enter homes the system shall be tested per NFPA I$D. The site installer shall through openings as small as a dime, even in new manufactured insert their name, address, and date on the certificate per 3-10.5. homes, the openings around pipes are frequently big enough for SUBSTANTIATION: The term "site" was added for clarification mice to enter. and to be consistent with the verbiage used on the certificate found COMMIq[TEE ACTION: Accept. in figure $-10.3. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 COMMITTEE ACTION: Accept. VOTE ON COMMITTEE ACTION: NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 14 AFFIRMATIVE: 13 VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 12 NOT RETURNED: 2 Endthoff, Lee (Log #116) Committee: MAN-STR 501- 45 - (4-5.3 [3280.303(c)] ): Reject SUBMITTER: Michael L. Zieman, RADCO (Log #6b) RECOMMENDATION: Revise the parenthetical phrase as follows: Committee: MAN-FIR (See Chapter*5 mad-tO). 501- 43 - (3-10.5 and 3-10.6 [3280.210, New] ): Accept in Principle SUBSTANTIATION: This change is needed to be consistent with SUBMITTER: John Lake, Marion County Fire-Rescue changes I have proposed to 10-3 and 10-4, Proposal 501-214 (Log RECOMMENDATION: I propose the following change to read: #115). 3-10.5 Upon final connection at the home site of the fire COMMITrEE ACTION: Reject. sprinkler system to the water supply per the manufacture's COMMITTEE STATEMENT: This action is for consistency with instructions, the adequacy of the water supply shall be verified, and the action taken on Proposal 501-214 (Log #115) and Proposal 501- the system shall be tested per NFPA I$D. The installer shall insert 215 (Log #103). their name, address, and date on the certificate per 3-10.$. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 3-10.6 Home manufactures shall provide the home owner with VOTE ON COMMITTEE ACTION: information describing the operation, method, frequency of testing AFFIRMATIVE: 13 and proper sprinkler maintenance. The home owner shall also be provided equiprnell¢ snecificafion documentation and desitm information. (Log #106) SUBSTANTIATION: Substantiation: Committee: MAN-STR This provides information to the home owner that will allow 501- 46 - (4-3.6.1 and 4-$.6.2 [3280.303(g)(1) and (2)]): Accept proper maintenance and replacement of components consistent SUBMITTER: Michael L. Zieman, RADCO with the manufactures original design. RECOMMENDATION: Delete existing Sections 4-3.6.1 and 4- COMMITTEE ACTION: Accept in Principle. 3.6.2. Revise 3-10.6 to read: Renumber existing 4-$.6.$ to 4-$.6.1. $-10.6 Home manufacturers shall provide the homeowner with SUBSTANTIATION: This requirement, to submit to the the following information describing the fire sprinkler system: "regulatory agency" [i.e., HUD or the Department in (a) equipment and specifications, 3280.$03(g)(1) and (2)] was added to the HUD Standard in 1994. (b) design information, It has not worked out well and has at times caused inordinate time (c) operation,

339 NFPA 501 m MAY 2000 ROP

delays waiting for the Department's review mad notification. The COMMITTEE STATEMENT: The current edition available is the program worked fine before this requirements was added. 1999 edition, not the 1993 as proposed. This revision will Considering the following there is no need for this requirement. reference the latest edition available. 1. The manufacturer's and their consults generally are qualified NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 al~d capable of creating alternative test procedures. VOTE ON COMMITTEE ACTION: 2. All such procedures end up being reviewed and approved by AFFIRMATIVE: 13 the HUD recognized DAPIA's prior to accepted. 3. Once approved by the DAPIA's these procedures are also subject to review by HUD's contract agent (currently NCSBCS) and HUD itself. (Log #118) COMMITTEE ACTION: Accept. Committee: MAN-STR NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 501- 49 - (Table 4-4 [3280.304(b)(1)]): Accept VOTE ON COMMITTEE ACTION: TCC NOTE: The Technical Correlating Committee on AFFIRMATIVE: 13 Manufactured Housing (MAN-AAC) directs that a public comment be submitted in the Correlating Committee's name requesting that the Technical Committee on Strucutral for Manufactured Housing (MAN-STR) provide clarification as to the (Log #38) intention of the text added to this proposal ~and manufactured Committee: MAN-STR housing application standard for hardboard siding." Is this a 501-47- (Table 4-4 [3280.304(b)(1), New]): Accept reference to a separate document or is it considered a title? SUBMITTER" Frank Walter, Manufactured Housing Inst. (MHI) SUBMITTER: Louis E. Wagner, American Hardboard Assn. RECOMMENDATION: Add a new reference standard to read as RECOMMENDATION: Revise text as follows: follows: "...Hardboard siding ANSI/AlIA A135.6 !9~°0 1998 and "Medium Density Fiberboard (MDF) ...... Ai~" manufa¢[ured housing annlica~ion standard for hardboard siding." SUBSTANTIATION: This recommended change was originally SUBSTANTIATION: The proposal updates A135.6 to the most submitted to HUD by the MHCSS Consensus Committee on 2-28- recent version and adds the application standard for hardboard 96, but no action has been taken. Medium density fiberboard siding. Both actions go a long way toward satisfying HUD's (MDF) is a commonly used material in the construction of many concerns about hardboard while using maintainable documents to manufactured homes. Currently, there is no reference standard do so. for MDF in the NFPA 501 Standard. Note: Supporting material is available at NFPA Headquarters. In 1991, the National Particleboard Association (NPA) proposed COMMITTEE ACTION: Accept. to HUD, through the MHCSS Consensus Committee, that the NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 MDF ANSI standard be included in the MHCSS as a referenced VOTE ON COMMITTEE ACTION: standard. HUD denied the request, noting that there were still AFFIRMATIVE: 13 uncertainties regarding the formaldehyde emission characteristics of MDF. In 1994 the MDF industry, users, and general interest parties worked together to create a new consensus standard, Medium Density Fiberboard (MDF), ANSI A208.2-1994, that (Log #175) includes formaldehyde emissions limits. It is now appropriate for Committee: MAN-STR this standard to be referenced in the NFPA 501 Standard. 501- 50 - (4-5.3.1.1 [3280.305(c)(1)(i)] ): Accept in Principle in COMMITTEE ACTION: Accept. Part NUMBER OF COMM1TI'EE MEMBERS ELIGIBLE TO VOTE: 13 SUBMITTERx Bill Farish, Fleetwood Homes VOTE ON COMMITTEE ACTION: RECOMMENDATION: Add a new sentence to the end of section AFFIRMATIVE: 13 as follows: "The pet uplift roof loadine may not be reduced by the dead load Of the roof structure in Wind Zone I onlv for the ourooses of eneineerinu desiun or structural load testing." (Log #39) Committee: MAN-STR SUBSTANTIATION: This incorporates Interpretive bulletin D-4- 76 into the body of the code where it belongs. 501- 48 - (Table 4-4 [3280.304(b)(1)]): Accept in Principle SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) COMMITTEE ACTION: Accept in Principle in Part. RECOMMENDATION: Revise Table 4-4 to read as follows: Add the following sentence to the existing 4-5.3.1.1 so that it reads as follows: Mat-Formed Wood Particleboard...... ANSI A208.1-1989 1993. The net unlift roof loading shall not be reduced by the dead load SUBSTANTIATION: This recommended change was originally of the roof structure for the puruoses of enoneerin¢ desiun or submitted to HUD by the MHCSS Consensus Committee on 12-29- 94, but no action has been taken. On July 28, 1993, ANSI structural load testing. approved a new national consensus standard for particleboard, COMMITTEE STATEMENT: The deletion of the reference to "to ANSI A208.1-1993. This new standard replaces the existing 1989 wind zone 1 only" is done for editorial purposes as this is being A208.1 standard edition. Pl~oposed to 4-5.3.1.1 which addresses standard wind load (zone 1). ANSI A208.1-1993 incorporates several significant changes that e term "may" was revised to be mandatory langna~e. could impact the manufactured home industry and the NFPA 501 NUMBER OF COMMITTEE MEMBERS ELIGIBLETO VOTE: 13 Standard: VOTE ON COMMITTEE ACTION: 1. The new standard is metric based, inch-pound conversions are AFFIRMATIVE: 13 provided. 2. The standard test method for determining linear expansion (LE) was modified to conform with ASTM D1037-91, measuring the LE between 50 percent and 80 percent relative humidity rather (Log #180) than between 50 - 90 percent. Committee: MAN-STR 3. A new table (Table B) was developed specifically for flooring 501- 51 - (Table 4-5.3.1.2(b) [3280.305(c) (1) (ii) (B) ] ): Reject products. The new nomenclature for manufactured home decking SUBMITTER: Bill Farish, Fleetwood Homes IS now: RECOMMENDATION: Revise footnote 7 as follows by adding * "D-2" and "'D-3" for standard grade decking (old 1-D-2,3), and sentence at the end: • "D-2 Exterior Glue" and "D-3 Exterior Glue" for exterior grade "...design wind pressures. Structural roofsheathiog is no~ (old 2-D-9,3) required if the roof coverin~ is shown to withstand the design wind 4. Table B in ANSI A208.1-1993 incorporates the formaldehyde nressures in the table." requirements specified in Urea-Formaldehvde Bonded SUBSTANTIATION: Reason: This would eliminate the recent Particleboard Flooring Products. NPA 10-92. The referenced level misunderstandings that roof sheathing is required in all Wind for flooring is 0.20 ppm, one-third lower than the Present HUD Zone II and III cases even under metal roofing. Code required 0.30 ppm. COMMITTEE ACTION: Reject. COMMITTEE ACTION: Accept in Principle. COMMITTEE STATEMENT: The committee prefers the I Add the reference to read as follows: application of Proposal 501o53 (Log #107) and moved to reject this Mat-Formed Wood Particleboard ...... ANSI A208.1 1999. proposal in favor of Proposal 501-53 (Log #107).

340 NFPA 501 -- MAY 2000 ROP

NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 COMMITTEE ACTION: Accept in Principle in Part. VOTE ON COMMITTEE ACTION: Add a new footnote 9 to Table 4-5.3.1.2 (b) that reads as follows: AFFIRMATIVE: 13 9. One piece metal roofing tested, without structural sheathing, using the design wind pressures specified for component and cladding (exterior roof coverings) in the table, are allowed to be used without structural sheathing. (Log #8) Add the footnote #9 reference in the table to the heading Committee: MAN-STR "exterior roof coverings, sheathing, and fastenings." 501-52- (4-5.3.2.4 [3280.305(c)(2)(iv)]): Accept in Principle Also revise the table so that the entry for exterior roof coverings is SUBMITTER: Patrick Lewis, State of Oregon a subpart of components and cladding. RECOMMENDATION: Revise text to read: COMMITTEE STATEMENT: The committee agrees with the 4-5.3.2.4 Consideration of Local Requirements. For areas where intent of the proposal. The following revisions were made for local building code requirements exceed the design wind speed clarification: The verbiage "in accordance with 5-1.2" was deleted. requirements of this standard, the state or federal regulatory This provision was too limited in scope and application when agency havin~ iurisdiction shall cvn;:,dcr thc a.dcpt'~,n adopt referring to only one specific section and not permitting other through rule making of-the more stringent requirements of the testing procedures. The term "main wind force resisting system state or local building authority. (ridge beams and other main roof support beams)" was revised to SUBSTANTIATION: Consumers located in Wind Zone 1 are "component and cladding (exterior roof coverings)" to be allowed to purchase manufactured homes. consistent with the terminology used in Table 4-5.3.1.2(b). The In order to provide consistency for the manufactured home addition of the footnote reference within the table was done for industry, the wind, seismic and snow loads should be established clarification of application. by the state regulatory agency or where there is none, by the federal NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 regulatory agency (HUD) based on local records or experience. VOTE ON COMMITTEE ACTION: For the protection of those living in high snow load areas, the AFFIRMATIVE: 12 language in this section needs to be changed from permissive to NEGATIVE: 1 mandatory. EXPLANATION OF NEGATIVE: COMMITTEE ACTION: Accept in Principle. BILLING: This proposal will permit the use of one piece metal Revise 4-5.3.2.4 to read as follows: roofing when it is tested "at design wind pressures." This is 4-5.3.2.4 Local Requirements. For areas where recognized wind contrary to the acceptance of many products which would be mapping data indicates wind speeds in excess of those indentified required to be tested using a safety factor of 1.5 to 3.0. (Windows in this standard, the regulatory agency shall proceed through rule are required to be tested at pressures 1.5 times the design making for the purpose of adopting more stringent requirements pressure.) To allow roofing to be tested "at design wind of the state or local conditions. pressures" would reduce the possibility of the roofing to remain in COMMITTEE STATEMENT: The revised wording provides a place when subjected to gusts which may exceed the design wind greater clarification of the application and should meet the pressure. I feel it is inappropriate to allow the use of ultimate submitter's inten~ capacity for design purposes and feel it is necessary to maintain the NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 use of safety factors for all portions of the manufactured home. VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 13 COMMENT ON AFFIRMATIVE: JONES: Eliminate state jurisdiction from text. To maintain (Log #40) federal pre-exemption, state agency should submit requested Committee: MAN-STR changes to design standards to NFPA consensus committee for 501- 54 - (4-5.3.3.1 [3280.305(c)(3)(i)] ): Accept in Principle in rulemaking adoption. Part SUBMITTEI~ Frank Walter, Manufactured Housing Inst. (MHI) RECOMMENDATION: Revise Section 4-5.3.3.1 to read as follows: 4-5.3.3 Snow and Roof Loads. (Log #107) 4-5.3.3.1 Flat, curved, and pitched roofs shall be designed to Committee: MAN-STR resist the live loads shown in Table 4-5.3.3.1 mqd F.:gure A 5.3.3.!, 501-53- (4-5.3.2.4, Table 4-5.3.1.2(b) [3280.305(c)(1)(ii)(B) based on the roof load zone areas established in Sections Table of Design Wind Pressures]): Accept in Principle in Part 4-5.3.3.1.1 through 4-5.3.3,1.3 applied downward on the horizontal SUBMITTER: Michael L. Zieman, RADCO projection as appropriate for the design zone marked on the RECOMMENDATION: Add a new Note #9 to read as follows: manufactured home. 9. One piece metal roofing tested, without structural sheathing, Table ~5.3.3.1 Roof Load Zones in accordance with 5-1.2 using the design wind pressures specified (Table 4-5-3.3.1 remains unchanged) for main wind force resisting system (ridge beams and other main roof support beams) in the table, are allowed to be used without structural sheathing. (Delete Figure 4-5.3.3.1 in its entirety~ SUBSTANTIATION: An ambiguous and convoluted I.B. was issued on this subject which makes it impractical to use one piece 4-5.3.3.1.1 Middle Roof Load Zone. The followin~ counties in metal roofing without structural sheathing. One piece metal each State listed are deemed to be within the Middle Roof Load roofing when subjected to the negative pressures specified in the Zone: table performs as a structural catenary membrane. Numerous tests 4-5.3.3.1.2 North Roof Load Zone. The followin~ counties in have shown this design to be viable and effective. In fact, these tests show that the design has superior load resistance capacity to each listed State are deemed to be within the North Roof Load the shingle roof with sheathing option which is allow¢~ bv Note #7 Zone: without having to be cvaluatedfor the loads in the table. When the above I.B. was issued a public comment Docket was Maine opened. A total of 12 comments were received into the docket all Aroostoon Hancock of which opposed the I.B. Piscataquis Washington Note: Supporting material available for review at NFPA Somerset Headquarters. Penobscot Al~ka Waldo All Counties Kno

341 NFPA 501 q MAY 2000 ROP

Table 4-5.3.3.1.1 Middle Roof Load Zone South Dakota MN continued M~ continued IA continued WI continued MI continued Massachusetts Grant Morrison Dodge Worth Marinette Chippewa Essex Codington Douglas Rice Mitchel Oconto Keweenaw Deuel Grant Steele Howard Menominee Ontonagon Maine Hamlin Stevens Freeborn Chickasaw Langlade Gogebic Franklin Kingsbury Pope Faribault Butler Marathon Iron Oxford Brookings Steams Waseca Floyd Clark Dickinson Kennebec Miner Swift Le Sueur Cerro Gordo Jackson Menominee Androscoggin Lake Kandiyohi Scott Franklin Trempealeau Delta Lincoln Moody Meeker Sibley Hardin Buffalo Schoolcraft Sagadahoc McCook Wright Nicollet Hamilton Pepin Mackinaw Cumberland Hanson Lac Qui Parle Blue Earth Webster Pierce Cheyboygan York Minnehaha Chippewa Martin Calhoun Dunn Emmet Hutchinson Yellow Medicine Watonwan Sac Eau Claire Presque Isle Montana Turner Millie Lacs Brown Ida Chiippewa Charlevoix All Counties Lincoln Kanabec Redwood Humboldt Rusk Montmorescy Yankton Benton Lyon Pocahontas Barron Alpena Idaho Union Isanti Lincoln Palo Alto Taylor Alcona All Counties Clay Sherburne Pipestone Buena Vista Lincoln Ogemaw Anoka Murray Cherokee Oneida Roccommon ~01orado Minnesota Chisapo Cottonwood Plymouth Polk Missaukee All Counties Koochiching Washington Jackson Sioux Burnett Wexford Itasca Hennipin Nobles O'Brien Washburn Benzie Wyoming Hubbard Ramsey Rock Clay Sawyer Grand Traverse All Counties Cass Renville Mower Wright Price Kalkaska Crow Wing McLeod St. Croix Crawford Doon Oscoda Utah Aitkin Carver |ow~ Wisconsin Otsego All Counties St. Louis Dakota Hancock Douglas Leelana Lake Goodhue Lyon Bayfield M2ghiggl~ Antrim Vermont Cook Wabasha Osceola Ashland Houghton Franklin Carlton Winona Dickinson Iron Baraga Grand Isle Pine Fillmore Emmet Vilas Marquette New York Lamoille Wadena Mower Kossuth Forest Alger St. Lawrence Orleans Todd Olmsted Winnebago Florence Luce Franklin Essex Clinton Chittendon Essex Caledoni Hamilton Washington Warren Orange Saratoga Addison Washington Rutland Herkimer Windsor Lewis Oswego Jefferson Coos Oneida Grafton Fulton Carroll Montgomery Belknap Schenectady Stratford Onondaga Merrimack Madison Sullivan Cayuga Rockingham Seneca Hillsborough Wayne Cheshire Ontario Yates Livingston Genesee Orleans Niagara Erie Wyoming Monroe

45.3.3.1.3 South Roof Load Zone. The States and counties that delineate the border by using recognized geographic lines on the ~r~ not listed for the Middle Roof Load Zone. Section 4-5.3.3.1.1 ground. On January 3, 1989, the MHCSS Consensus Committee or the North Roof Load Zone. Section 4-5.~.$.1.2 are deemed to he recommended to HUD that highways be used to delineate between within the South Roof Load Zone. zones. Recently, the Secretary was advised by the HUD staff that, perhaps, a better enforceable method to delineate between zones SUBSTANTIATION: This recommended change was originally ~s to use counties, as was done for the recent wind zone map submitted to HUD by the MHCSS Consensus Committee on 2-28- 96, but no action has been taken. The current roof load zone map revisions back in 1994. The proposed modifications will clarify the zone requirements for manufacturers and retailers, as well as divides several states between the middle and south areas as well as home buyers. the middle and north area. Consequently, homes shipped into those states are invariably designed to meet the more restrictive Note: Supporting material is available for review at NFPA Headquarters. roof load requirements because the map has failed to clearly

342 NFPA 501 -- MAY 2000 ROP

COMMITTEE ACTION: Accept in Principle in Part. Do as the submitter hasproposed except retain the verbage that is proposed to be deleted. Add an appendix note and revised 4-5.3.3.1 Penobscot Alaska should read: Waldo All Counties 4-5.3.3 Snow and Roof Loads. Kno 4-5.3.3.1 Flat, curved, and pitched roofs shall be designed, to resist Hancock the live loads shown in Table 4-5.3.$.1 and Figure 4-5.3.3.1, based on Washington the roof load zone areas established in Sections 4-5.3.3.1.1 through 4-5.3.3.1.3 applied downward on the horizontal projection as 4-5.3.3.1.3 South Roof Load Zone. The States and counties that appropriate for the design zone marked on the manufactured home. are not listed for the Middle Roof Load Zone. Section 4-5.3.3.1.1. Table 4-5.3.3.1 Roof Load Zones 9r the North RgQf Load Zone. Section 4-5.3.3.1.9. are deemed to (Table 4-5-3.3.1 remains unchanged) be within the South Roof Load Zone. 4-5.3.3.1.1" Middle Roof Load Zone. "The following counties in each State listed are deemed to be within the Middle Roof Load A-4-5.3.3.1.1 The following county map is provided to assist the document user which represents those counties highlighted in Zone: 4-5.3.3.1. (SeeFigure A-4-5.3.3.1.I.)

A-4.5.3.3.1.2 See the county map provided in A-4-5.3.3.1.1.

.... [] Middle 30 PSF (snow) I"1 South 20 PSF (minimum)

Figure 4-5.3.3.1.1 Middle roof load zone.

4-5.3.3.1.2" North Roof Lgad Zone. The following counties in each listed State are deemed to be within the North Roof Load ~one:

Main~ Aroost.on Piscataquis Somerset

Figure A-4.5.3.3.1.1 Middle roof load zones.

343 NFPA 501 -- MAY 2000 ROP

Table 4-,5.5.5.1 Middle Roof Load Zone South D~.kota ~ ~ ~ ~ Massachusetts Grant Morrison Dodge Worth Marinette Chippewa Essex Codington Douglas Rice Mitchel Oconto Keweenaw Deuel Grant Steele Howard Menominee Ontonagon Maine Hamlin Stevens Freeborn Chickasaw Langlade Gogebic Franklin Kingsbury Pope Faribault Butler Marathon Iron Oxford Brookings Stearns Waseca Floyd Clark Dickinson Kennebec Miner Swift Le Sueur Cerro Gordo Jackson Menominee Androscoggin Lake Kandiyohi Scott Franklin Trempealeau Delta Lincoln Moody Meeker Sibley Hardin Buffalo Schoolcraft Sagadahoc McCook Wright Nicollet Hamilton Pepin Mackinaw Cumberland Hanson Lac Qui Parle Blue Earth Webster Pierce Cheyboygan York Minnehaha Chippewa Martin Calhoun Dunn Emmet Hutchinson Yellow Medicine Watonwan Sac Eau Claire Presque Isle Montana Turner Millie Lacs Brown Ida Chiippewa Charlevoix All Counties Lincoln Kanabec Redwood Humboldt Rusk Montmorescy Yankton Benton Lyon Pocahontas Barron Alpena Idaho Union Isanti Lincoln Palo Alto Taylor AIcona All Counties Clay Sherburne Pipestone Buena Vista Lincoln Ogemaw Anoka Murray Cherokee Oneida Roccommon Colorado Minnesota Chisapo Cottonwood Plymouth Polk Missaukee All Counties Koochiching Washington Jackson Sioux Burnett Wexford Itasca Hennipin Nobles O'Brien Washburn Benzie Wyomin~ Hubbard Ramsey Rock Clay Sawyer Grand Traverse All Counties Cass Renville Mower Wright Price Kalkaska Crow Wing McLeod St. Croix Crawford Doon Oscoda Utah Aitkin Carver Iowa Wisconsin Otsego All Counties St. Louis Dakota Hancock Douglas Leelana Lake Goodhu e Lyon Bayfield Michltran Antrim Vel~flont Cook Wabasha Osceola Ashland Houghton Franklin Carlton Winona Dickinson Iron Baraga Grand Isle Pine Fillmore Emmet Vilas Marquette New York Larnoille Wadena Mower Kossuth Forest Alger St. Lawrence Orleans Todd Olmsted Winnebago Florence Luce Franklin Essex Clinton Chittendon Essex Caledoni Hamilton Washington Warren Orange Saratoga Addison Washington Rutland Herkimer Windsor Lewis Oswego New Hamnshire Jefferson Coos Oneida Grafton Fulton Carroll Montgomery Belknap Schenectady Stratford Onondaga Merrimack Madison Sullivan Cayuga Rockingham Seneca Hillsborough Wayne Cheshire Ontario Yates Livingston Genesee Orleans Niagara Erie Wyoming Monroe

344 NFPA 501 ~ MAY 2000 ROP

COMMITTEE STATEMENT: The committee concurred with the (Log #41) intentions of the proposal to provide a greater clarification on the Committee: MAN-STR application based on a county location. The references to Figure 501-56- (4-5.3.3.4 (New) [3280.305(c)(3)(iv), New]): Accept in 4-5.3.3.1 are retained because the requirement of 1-5 (f) reqmres Principle in Part the map to be included on the data plate. Also, editorially, the TCC NOTE: The Technical Correlating Committee on current Figure 4-5.3.3.1 should be reviewed for proper shading of Manufactured Housing (MAN-AAC) directs that a public the area identified as "North." comment be submitted in the Correlating Committee's name NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 requesting that the Technical Committee on Strueutral for VOTE ON COMMITTEE ACTION: Manufactured Housing (MAN-STR) provide verification that the AFFIRMATIVE: 13 safety factors associated with loads associated with skylights is effectively addressed by the proposed reference standard, AAMA 1600-90. SUBMITTER: Frank Walter, Manufactured Housing Inst.. (MHI) (Log #9) RECOMMENDATION: Add a new Section 4-5.3.3.4 to read as Committee: MAN-STR follows: 501- 55 - (4-5.3.3.2 [3280.305(c)(3)(ii)]): Accept in Principle in 4-5.3.3.4 Skylights shall be reauired to withstand roof loads as Part specified in Sections 4-5.3.3.1 or 4-5.3.3.2. Skylights shall be listec[ SUBM/TTER: Patrick Lewis, State of Oregon in accordance with AAMA 1606-82. Voluntary Uniform Load RECOMMENDATION: Revise text to read: Structural Standard for Plastic Domed Skvlights and tested in "4-5.3.3.2 For exposures in areas (mountainous or other) where accordance with AAMA 1605.1-87. Voluntary Standard Uniform snow records, windrecords, or experience indicate significant differences from the loads stated above, the state or federal Load Test Procedure for Plastic Glaze0 Skvlight~ by Unifgrm Sta~g regulatory agency shall ~c pe..'z.2=tcd t~ establish more stringent Air Pressure Differeta¢¢, requirements for homes known to be destioed for such areas. For SUBSTANTIATION: This recommended change was originally snow loads, such.., for sheltered areas." submitted to HUD by the MHC,SS Consensus Committee on 12-30- SUBSTANTIATION: Consumers located in the South Zone are 93, but no action has been taken. The NFPA 501 Standard allowed to purchase manufactured homes with roofs designed for currently does not have any unique roof or snow load 20 lb per sq ft (psf) live load and place them in areas with roof requirements for skylights. The proposed new section would snow loads from 80 psf to 160 psf. This not only puts consumers require that skylights he listed to an acceptable criteria and would and their property at tremendous risk, it puts them at risk without comply with the requirements currently hsted in the Standard their knowledge. They purchase the manufactured home in good (Sections 4-5.3.$.1 or 4-5.3.3.2). faith believing that the HUD labels assure the construction is safe. COMMITTEE ACTION: Accept in Principle in Part. It is not until the ceiling starts sagging or the roof collapses that Add a new 4-5.3.3.4 to read as follows: they discover their home and investment was knowingly approved 4-5.3.3.4 Skylights shall be reouired to withstand roof loads as to be under built for the area their home was sited. snecified in Sections 4-5.3.3.1 or 4-5.3.3.2. Skvlights shall be listed Due to the federal preemption, states and local governments are and tested in accordance with AAMA 1600-90 Voluntary currently prohibited from requiring manufactured homes be built Snecifications for Skvlights. for the actual roof loads known to exist in these areas, ffthe C-OMMr[TEE STA'I'EI~T: The AAMA document AAMA 1600- standards permit local governments to determine the roof load 90 was preferred as the referencing document for skylights. This conditions, there will be no consistency. In order to provide document supersedes the previous AAMA 1606-82 document and consistency for the manufactured home industry, the snow roof addresses all types of skylights, not just plastic doomed ones. The loads should be established by the state regulatory agency or where AAMA 1605.1-87 document is currently a referenced document there is none by the federal regulatory agency (HUD) based on within the body of AAMA 1600-90 document. local snow records, wind records, or experience. NUMBER OF COMMITIT_E MEMBERS ELIGIBLE TO VOTE: 13 For the protection of those living in high snow load areas, the VOTE ON COMMITTEE ACTION: language in this section needs to be changed from permissive to AFFIRMATIVE: 13 mandatory. COMMITTEE ACTION: Accept in Principle in Part. Revise 4-5.3.3.2 to read as follows: 4-5.3.3.2 For exposures in areas (mountainous or other) where (Log #CP100) recognized snow records, or wind records ~r c:=pe~c:,:= indicate Committee: MAN-STR significant differences from the loads stated above, the regulatory 501- 57 - (4-5.5.1 and 4-5.5.2): Accept agency shall be permitted to establish more stringent TCC NOTE: The Technical Correlating Committee on requirements for homes known to be destined for such areas Manufactured Housing (MAN-AAC) directs that a public proceeding through rulemaking for the Durnose 9f adopting more comment be submitted in the Correlating Committee's name stringent reo~irements for the Ipcal eor~litions. For snow loads, requesting that the Technical Committee on Strucutral for such-requirements shall be based on a roof snow load of 0.6 of the Manufactured Housing (MAN-STR) give consideration to Mr. ground snow load for areas exposed to wind and a roof snow load Wiils's comment on his affirmative ballot. of 0.8 of the ground snow load for sheltered areas. SUBMITrER: Technical Committee on Strucutral for COMMITTEE STATEMENT: The revisions to this paragraph were Manufactured Housing done for clarification purposes. The terms "or experience" was RECOMMENDATION: Revise 4-5.5.1 and 4-5.5.2 as follows: deleted as it is unnecessary because documented records for the 4-5.5.1 Roof framing shall be securely fastened to wall framing, wind or snow would establish the experience of the area in walls to floor structure, and floor structure to chassis to secure and question. A phrase was added to permit the agency to develop maintain continuity between the floor and chassis in order to resist more stringent requirements as needed. wind overturning, upfift, and sliding and to provide coiltinuous NUMBER OF COMMITI'EE MEMBERS ELIGIBLE TO VOTE: 13 load oaths for these forces to the foundation or anchorage system. VOTE ON COMMITTEE ACTION: The number and tYPe of fasteners used shall be cavable of AFFIRMATIVE: 13 transferrin~ all forces between elements being" Joined. -- v_ COMMENT ON AFFIRMATIVE: 4-5.5.2 For Wind Zone II and Wind Zone III, roof ~:=~ JONES: Eliminate state jurisdiction from text. See my Comment shall be =cz:~r~a-.securely f~¢tened at the vertical on Affirthative on Proposal 501-52 (Log #8). bearing points to resist desi_tm overturning, uplift and sliding forces. When en~neered connectors are not installed, rgof

345 NFPA 501 -- MAY 2000 ROP framing members shall be secured at the vertical bearin~ noints to This would allow a properly engineered roof system consisting of c::tc-cr wall framing members (studs) and cxtcr'c.r wall t:raming trusses 16" or 24 " on center built into a system, with a heel rail on members (studs) shall be secured to floor framing members with one end and a ridge beam or ridge rail on the other. All 26 gauge minimum stell strapping or en~neered connectors connections can be analyzed to resist the appropriate wind L..~_,~...... ~, or by a combination of with 26 gauge minimum stell pressures. strapping or en~neerecl connectors b~cl'.e~, and structual-rated COMMITTEE ACq'ION: Accept in Principle. wall sheafing that overlaps the roof and floor system. Steel COMMITTEE STATEMENT: The complete committee action can strapping or engineered connectors hr~z!'.e~ shall be installed at a be found in Committee Proposal 501-57 (Log #GP100). The intent of the proposal for revising the term used for framing members maximum spacing of 24 in. (610 mm) on center in Wind Zone III. and the exception were incorporated into this committee proposal and should fulfill the submitter's intent. See Committee Proposal otrapp!ag, ~.~ckc= .r :~-uctua! :hca'dng ~hall be ca~=blc ~f 501-57 (Log #CP10O). NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 ]~i~ptiorl: Where substantiated by structural analysis, the 26- VOTE ON COMMITTEE ACTION: ~au~e minimum steel straDnin~ or engineered connectors shall be AFFIRMATIVE: 13 permitted ~o be omitted when ~e structural rated sheathin~ that ovcrl~p, either the roof or floor system is caoable of sustaining the anolied loads. SUBSTANTIATION: The revision of 4-5.5.1 and 4-5.5.2 was done (Log #176) to provide a greater performance standard applications and clarify Committee: MAN-STR the perscripdve apphcations. The revision also now recognizes all 501- 59 - (4-5.5.2 [3280.205(e)(2)]): Accept in Principle types of roof systems that are being used. The committee proposal SUBMITTER= Bill Farish, Fleetwood Homes has incorporated the intentions of Proposal 501-58 (Log #42) and RECOMMENDATION: Revise the first sentence as follows: Proposal 501-59 (Log #176). The last sentence of 4-5.5.2 was "For Wind Zone II and Wind Zone III. The ends of roof trusses relocated to 4-5.5.1 for the purpose of clarification and ease of use. shall be secured to exterior wall frame members..." COMMITTEE ACTION: Accept. SUBSTANTIATION: Eliminates confusion that has caused some NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 to apply uplift straps along the bottom chord of roof trusses VOTE ON COMMITTEE ACTION: connecting them to the exterior studs of end walls even through AFFIRMATIVE: 17, there is no load in such additional straps. COMMENT ON AFFIRMATIVE: COMMITTEE ACTION: Accept in Principle. WILLS: The Committee Proposal follows an existing practice in COMMITTEE STATEMENT: The complete Committee Action the 501 Standard of referring to steel products by gauge. AISI associated with. this proposal can be found in the Committee urges the committee to designate steel products by a minimum Proposal 501-57 (Log #CP100). The Committee Proposal was decimal thickness with gauge equivalents shown in parenthesis as a created to combine a couple of public proposals into a single secondary control. Current practice for the steel industry is to proposal for ease of review. The Committee Proposal should meet make and sell product by minimum thickness. Gauge designations the intent of the suhmitter. are antiquated and arbitrary and make a poor basis for code use. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 17, Gauge refers to a range of thickness as designated by a specific VOTE ON COMMITTEE ACTION: ASTM steel standard. Gauge thicknesses are unique to a particular AFFIRMATIVE: 13 ASTM standard, therefore gauge is not an absolute measurement system for the various ASTM steel products used in construction. Obviously, since many steel consumers in construction use gauge designations, gauge equivalents need to be listed as a secondary (Log #43) reference in construction standards. However, legal code Committee: MAN-STR enforcement requires an absolute system based on minimum 501- 60 - (4-5.7.1 [3280.305(g)(1)]): Accept in Principle decimal thickness. SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) RECOMMENDATION: Revise Section 4-5.7.1 to read as follows: 4-5.7.1 Floor assemblies, includin~ stairways and landings provided bv the manufacturer, shall be designed in accordance (Log #42) with accepted engineering practice standards to support a Committee: MAN-STR minimum uniform live load of 40 lb/ft2 (195 k/m2) plus the dead 501- 58 - (4-5.5.2 [3280.305(e)(2)]): Accept in Principle load of the materials. In addition (but not simultaneously), floors SUBM1TTER: Frank Walter, Manufactured Housing Inst. (MHI) shall be able to support a 200-1b (90.7 kg) concentrated load on a RECOMMENDATION: Revise Section 4-5.5.2 to read as follows: 1-in. (25-mm) diameter disc at the most critical location, with a 4-5.5.2 For Wind Zones II and Wind Zone III, roof ~"azzm maximum deflection no to exceed 1/8 in. (3 ram) relative to floor systems shall be secured to exterior wall ..... :v,~, ...~...v~.o--^--'-~-z.,..a.x,~.~, framing. Perimeter wood joists of more than 6 in. (152 mm) svstems, and exterior ;;'z21 frz.m'ng ....~_,.~,..~.~ r.~..n~x,.... ,svstems. shall depth shall be stabilized against overturning from superimposed be secured to floor frzm'ag membcrz systems with 26-gauge loads in accordance with the following: minimum steel strapping or brackets, or by a combination of 26- (a) At-ends, by solid blocking not less than 2 in. (51 mm) gauge minimum steel strapping or brackets and structural-rated thickness by full depth of joist or by connecting to a continuous wall sheathing that overlaps the roof and floor. Steel strapping or header not less than P-in. (51-ram) thickness and not less than the brackets shall be installed at a maximum spacing of 24 in. (610 depth of the joist with connecting devices mm) on center in Wind Zone II and at a maximum of 16 in. (406 (b) At 8-ft (2.4-m) maximum intermediate spacing, by solid mm) on center in Wind Zone III. The number and type of blocking or by wood cross-bridging of not less than 1 in. x 3 in. fasteners used to secure the steel straps, brackets, or structural (25 mm x 76 ram), metal cross-bridging of equal strength, or by sheathing shall be capable of transferring all uplift forces between other approved methods. elements being joined. SUBSTANTIATION: This recommended change was originally Exceotion: Where substantiated bv structural analvsis, the 26. submitted to HUD by the MHCSS Consensus Committee on 12-26- gauge minimum steel strapping or brackets shall be permitt¢¢~ t0 90, but no action has been taken. The need for theproposed be omitted when the structural rated sheathin~ that overlaos either addition to Section 4-5.7.1 of the NFPA 501 Standardis based on the ability of the manufactured home industry to provide new and ttae roof or floor system is car)able of sustainin~ the annlied 19~cls. innovative designs and features which were not contemplated when SUBSTANTIATION: This recommended change w-~-originally the standard was originally written. submitted to HUD by the MHCSS Consensus Committee on 2-28- As a result of market demands and industry innovations, 96, but no action has been taken. The change requested will manufacturers have created manufactured homes with split-levels, permit the designer to be innovative in his/her thinking and raised floors, decks, lofts and two-story dwellings. The use of promote the latest innovation in construction techniques. stairways in manufactured homes increase each year, yet the An engineered system would ensure that the Standard Standard is completely silent on the design and construction of requirements are met to provide a safe and durable house under stairways, landings, guardrails or handrails. Poorly designed or the design wind conditions at an affordable cost. built stairways may lead to serious accidents, especially among the elderly. If it is still the intent of the Standard to reduce injuries, then this is an area the Standard needs to address.

346 NFPA 501 -- MAY 2000 ROP

The proposed addition to Section 4-5.7.1 is based on existing The particleboard floor decking used in an exterior application national standards, but is primarily based on the 1989 CABO One- becomes a problem. For example, if it is used in such areas as the and Two-Family Dwelling Code. It includes stairways and landings floor for recessed porches and sliding glass doors. Even when provided by the manufacturer within the scope of the term "floor these areas are sealed or covered with sheet metal, vinyl or rubber, assemblies." some floors still deteriorate from moisture within a very short time. COMMITTEE ACTION: Accept in Principle. Although some deterioration could result from leaks in the floor Revise 4-5.7.1 to read as follows: seal or cover, much of the deterioration could result from 4-5.7.1 Floor assemblies, including stairwavs, landint,s. decks, and condensation within the floor. When moisture draws from v pgrches provided bv the manufacturer, shall be designed in beneath the home, it can permeate through the particleboard accordance with accepted engineering practice standards to decking, but it then gets trapped when it can not penetrate the support a minimum uniform live load of 40 lb/ft2 (195 k/m2) sealant or floor covering material. Slowly the particleboard plus the dead load of the materials. Exterior balconies shall be accumulates the moisture until it is completely saturated and ~lgsigned to sunnort a minimum uniform live load of 60 Ib/ft2 begins to deteriorate causing extensive structural damage to fairly I (292.5 k/m2) t)lus the dead load of the materials. In addition new manufactured homes. COMMITTEE ACTION: Accept in Principle. (but not simultaneously), floors shall be able to support a 200-1b Create a new 4-5.7.3 as follows and renumber remaining (90.7 kg) concentrated load on a 1-in. (25-mm) diameter disc at paragraphs accordingly. the most critical location, with a maximum deflection not to 4-5.7.3 Wood panel oroducts used as floor or subfloor materials exceed 1/8 in. (3 ram) relative to floor framing. Perimeter wood joists of more than 6 in. (152 mm) depth shall be stabilized against on the exterior-of the home. such as in recessed entry, ways. shall overturning from superimposed loads in accordance with the be rated for exterior exposure and shall be nrotected fi-om following: moisture by sealin~ or aoplving nonabsorbent overlay with water (a) At ends, by solid blocking not less than 2 in. (51 mm) resistant adhesive. thickness by full depth of joist or by connecting to a continuous COMMITTEE STATEMENT: The committee wished to create a header not less than 2-in. (51-ram) thickness and not less than the separate paragraph to address this specific product used on the depth of the joist with connecting devices. exterior of a home. The terms "manufactured using glue suitable" (b) At 8-ft (2.4-m) maximum intermediate spacing, by solid was replaced with "rated." This was done to recognize the proper blocking or by wood cross-bridging of not less than 1 in. x 3 in. identification for this type of material and not only limit the (25 mm x 76 ram), metal cross-bridging of equal strength, or by reference to materials that are glued, but any type of material that other approved methods. can be used in an exterior application. COMMITTEE STATEMENT: The terms deck and porches were NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 added to highlight those elements that would also be included for VOTE ON COMMITTEE ACTION: this design requirement. Exterior balconies which are part of the AFFIRMATIVE: 13 manufactured home are also required to meet specific design COMMENT ON AFFIRMATIVE: requirements and dais highlights this issue. The design loads are BRADFIELD: The action is correct in principal, but Section 4-5.7. those which are consistent with those in the model building codes. needs additi~aal language. Below, I have highlighted the language NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 that I would propose needs to be inserted. VOTE ON COMMITTEE ACTION: Section 4-5.7.3 should read: "Wood panel products used as floor AFFIRMATIVE: 13 or subfloor materials on the exterior of the home, such as in COMMENT ON AFFIRMATIVE: recessed entry ways, shall be rated for exterior exposure such that JONES: A definition of balcony is needed. The 1995 CABO they achieve an 'exterior' exposure durability rating equivalent to definition of balcony does not fit the intent of the committee on that defined in section 4.1.1.1 of PS2-92 and shall be protected..." this section. In order to achieve the purpose stated in the substantiation submitted by Mr. Walter, the correct classification is needed. Panels meeting the specification described in the language above can be easily identified by production personnel and inspectors (Log #44) alike because they are stamped "exterior." The language in Section Committee: MAN-STR 4.1.1.1 of PS2-92 reads, "Panels that are suitable for permanent 501- 61 - (4-5.7.2 [3280.305(g)(2)]): Accept in Principle exposure to weather or moisture." TCC NOTE: The Technical Correlating Committee on JONES: Should the proposed 4-5.7.3 not also include reference Manufactured Housing (MAN-AAC) directs that a public to porches and decks? comment be submitted in the Correlating Committee's name requesting that the Technical Committee on Strucutral for Manufactured Housing (MAN-STR) give consideration to Mr. Brandford's comment on his affirmative ballot and review the (Log #45) application of PS-1 as it may relate an to exterior application. Committee: MAN-STR SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) 501- 62 - (4-5.7.3 [3280.305(g)(3)]): Reject RECOMMENDATION: Revise Section 4-5.7.2 to read as follows: SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) 4-5.7.2 Wood, wood fiber or plywood floors or subfolders in RECOMMENDATION: Revise Section 4-5.7.3 to read as follows: kitchens, bathrooms (including toilet compartments), laundry 4-5.7.3 Carpet and/or carpet pads shall not be installed under rooms, water heater compartments, and and other areas subject to concealed spaces subject to excessive moisture, such as plumbing excessive moisture shall be moisture resistant or shall be made fixture spaces or floor areas under installed laundry equipment. moisture resistant by sealing or by an overlay of nonabsorbent Carpet shall be permitted to be installed in laundry space provided material applied with water-resistant adhesive. Wood panel the following: products used as floor or subfloor materials on the e~terior of the (a) The appliances are not provided. home. such as in recessed entry, w~vs. shall be manufactured using (b) The conditions of 4-5.7.2 are followed. glue suitable for exterior exnosure and shall be nrotected from (c) Instructions are provided to remove carpet when the moisture by sealing or annlving nonabsorbent overlay with water- appliances are installed. resistant adhesive. -Application of any of the following methods Excention: Snaces beneath free standing refrigerators and/or cookin~ ranges unless nrohibited by the annliance manufacturer's shall be considered to be in accordance with this requirement: (a) remains unchanged instructions. (b) remains unchanged SUBSTANTIATION: This recommended change was originally (c) remains unchanged submitted to HUD by the MHCSS Consensus Committee on 12-29- (d) remains unchanged. 92, but no action has been taken. The prohibition of carpets SUBSTANTIATION: This recommended change was originally and/or carpet pads beneath cooking ranges and refrigerators is submitted to HUD by the MHCSS Consensus Committee on 12-29- not felt to be substantiated by present wording in the Standard. 94, but no action has been taken. The NFPA 501 Standard permits The area beneath a range and refrigerator is not concealed. If particleboard floor decking in manufactured homes. This is the carpet did get wet from a source at these appliances, it would generally not a problem since the Standard also requires it to be be clearly and prompdy visible to the occupants via the "wicking" sealed to resist moisture in wet or damp locations such as action inherent with carpeting. If the source were from another bathrooms and kitchens. location, the wet carpet would be evident even prior to its reaching the appliance locations. Therefore, we do not find the areas

347 NFPA 501 -- MAY 2000 ROP beneath ranges and refrigerators applicable to the concerns of COMMITTEE ACTION: Accept in Principle in Part. Section 4-5.7.2. Revise 4-6.2.1 to read as follows: These appliances are not "fixed" in place as substantiated by 4-6.2.1 The manufacturer shall provide printed instructions with appliance instructions requiring refrigerators to be pulled out for each manufactured home that specify the location and required periodic cleaning. Also, per Section 9-2, the definition of capacity of stabilizing devices on which the design is based. In "portable appliances" specifically addresses "cord connected adcUtion to the nrinted instructions, each column sunoort trier refrigerators...and other similar appliances." locatign required along the marriage line(s) of mult]s-ection There is a cost impact as additional labor and materials are lltanufactured homes shall be identified by naint, label, decal. required for removal of the carpet from these areas and placing of ~tencil. or other acceptable method at eachpier location. Such trim to dress the carpet edges. The floor decking beneath appliances i~ treated against moisture location identifications shall be visible after the home is installed. by an overlay or other water-resistant means as required by Section The manufacturer shall provide drawings and specifications, 4-5.7.2. Consequently, the concern for carpet beneath these certified by a registered professional engineer or architect, that appliances becomes one of a concern for longevity of the carpet indicate at least one acceptable system of anchoring, including the only, which is not a Standard concern. details or required straps or cables, their end connections, and all COMMITTEE ACTION: Reject. other devices needed to transfer the wind loads from the COMMITTEE STATEMENT: The proposed wording does not manufactured home to an anchoring or foundation system. appear to be consistent with the provisions of this particular COMMITTEE STATEMENT: The committee concurred with the paragraph. This section addresses concealed spaces and the intent of the proposal. The terms "pier support" was replaced with substantiation provided notes that the area beneath a range or "column support pier" to provide greater clarification. A new refrigerator is not a concealed area. Therefore, it would be sentence was added to indicate that the identification of the inappropriate to add this provision to this paragraph. column support pier locations for the home be identified and NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 risible for inspection after the home has been set on its piers. VOTE ON COMMITTEE ACTION: NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 AFFIRMATIVE: 13 VOTE ON COMMITTEE ACTION: COMMENT ON AFFIRMATIVE: AFFIRMATIVE: 13 JONES: Proposed rewording clarification of the exception: "Spaces beneath free standing refrigerators and/or cooking ranges are not considered to be concealed." (Log #2) Committee: MAN-STR 501- 64 - (4-6.2.2(b) [3280.306(b)(2)(iv)]): Reject (Log #46) SUBMITTER: Frank Walter, Manufactured Houssing Inst. (MHI) Committee: MAN-STR RECOMMENDATION: Add a new subparagraph 4-6.2.2(b) and 501- 63 - (4-6.2.1 [3280.306(b)] ): Accept in Principle in Part renumber the remaining subparagraphs (b) through (e): SUBMITTER: Frank Walter, Manufactured Housing l~st. (MHI) 4-6.2.2(b) On-site soil investieation should be made odor to RECOMMENDATION: Revise Section 4-6.2.1 to read as follows: selectin~ the correct earth ancl~orimz/stabilizafion system. 4-6.2.1 The manufacturer shall provide printed instructions with SUBST/dNTIATION: This provision would add a new item to be each manufactured home that spedfy the location and required incorporated into the manutacturer's installation instructions. capacity of stabilizing devices on which the design is based. In There are many different anchor systems available from a variety of i~ddition to the t)rinted instructions, each nier support location suppliers. Soil conditions should be known to select the rfqoired algng the marriage line(s) of mulfisection manufactured appropriate anchoring system. The investigation would encourage the installer to select a certain anchoring system to satisfy the soil hom¢~ shall be indicated bv naint, label, decal, stencil or other investigation. accet)table method at eachpier location. The manufacturer shall COMMITTEE ACTION: Reject. provide drawings and specifications, certified by a registered COMMI'VEEE STATEMENT: The language is not needed to be professional engineer or architect, that indicate at least one added to the current text. This material is currently addressed in acceptable system of anchoring, including the details or required the manufacturer's written instructions and the provisions of the straps or cables, their end connections, and all other devices local jurisdictions. needed to transfer the wind loads from the manufactured home to NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 15 an anchoring or foundation system. VOTE ON COMMITI'EE ACTION: SUBSTANTIATION: This recommended change was originally AFFIRMATIVE: 13 submitted to HUD by the MHCSS Consensus Committee on 12-26- 90, but no action has been taken. The proposed change to Section 4-6.2.1 of NFPA 501 Standard is based on the need for improved construction and safety standards. (Log #47) One consistent problem that affects the manufactured home Committee: MAN-STR manufacturer, retailer, set-up inspector and consumer is the 501- 65 - (4-6.4 [3280.306(d)]): Accept improper placement of centerline pier supports under TCC NOTE: The Technical Correlating Committee on multisection manufactured homes. Locating these main pier Manufactured Housing (MAN-AAC) directs that a public supports in the wrong location can cause serious damage to the comment be submitted in the Correlating Committee's name structure and a tremendous cost to both retailers and requesting that the Technical Committee on Strucutral for manufacturers performing service work, not to mention the Manufactured Housing (MAN-STR) review this section and inconvenience to the homeowner and set-up inspector. This provide greater clarification for (a) if an endwall can be proposal will not assure a higher competence level of those considered as an outer sidewall, and (b) should it be a vertical tie installing the manufactured home, but it should significantly where diagonal tie exist in the longtitual direction. reduce the chance for error on their part. The cost of marking SUBMITTER: Frank Walter, Manufactured Houssing Inst. (MHI) these pier support locations as proposed will be extremely RECOMMENDATION: Revise Section 4-6.4 to read as follows: negligible compared with the tremendous cost savings that may be 4-6.4 Requirements for Ties. Manufactured homes in Wind Zone realized by the manufacturer and retailer once this change would I shall require only diagonal ties. These ties shall he placed along go into effect. the main frame and below the outer sidewalls. All manufactured homes designed to be located in Wind Zone II and Wind Zone Ill shall have = -:~rt:.c=~ ~e :."~*~.=!!ed :t e.::b. ~=.~.~ ~ !=~-~.~n both vertical and dia~onal ties.

348 NFPA 501 ~ MAY 2000 ROP

SUBSTANTIATION: This recommended change was originally 1992. This was subsequently placed in Table B, ANSI A208.1-93. submitted to HUD by the MHC.SS Consensus Committee on 2-28- This new standard will reduce emissions by one-third, from the 96, but no action has been taken. Due to factors such as loads of current 501 Standard's ceiling value of 0.3 ppm for partideboard two straps, the position of anchors in proximity to each other and to 0.02 ppm. Statistical studies estimate that average particleboard the allowable angles of strap loading, engineers are limited in the MHD large chamber values will drop from the present 0.18 ppm to designs of anchoring systems that will actually work. 0.12 ppm. COMMITTEE ACTION: Accept. Both the U.S. EPA and CPSC support the lower values and have NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 encouraged industry to seek reference of the new standard in the VOTE ON COMMITTEE ACTION: model building codes and the manufactured home industry. AFFIRMATIVE: 12 COMMITTEE ACTION: Accept. NEGATIVE: 1 I Do as requested by the proposal. Update the reference of the EXPLANATION OF NEGATIVE: standard from the 1993 to 1999 edition. The latest edition that is BILLING: I am a firm believer in the use of both vertical and available is the 1999 edition. diagonal ties. However, this proposal leaves me with the NUMBER OF COMMITrEE MEMBERS ELIGIBLE TO VOTE: 13 impression that we are allowing a 50 percent reduction of the ties. VOTE ON COMMITTEE ACTION: Based on recent investigations of ties in some high wind areas, a AFFIRMATIVE: 13 considerable number of the required ties had deteriorated to the point that they could not provide the necessary resistance in a design event. By removing what some may consider a redundancy, we are reducing a safety factor. (Log #49) Committee: MAN-STR 501- 68 - (4-8.1(c) (New) [3280.$08(a)(3), New]): Accept SUBMITTER: Frank Walter, Manufactured-Housing Inst. (MHI) (Log #1) RECOMMENDATION: Add a new Section 4-8.1 (c) to read as Committee: MAN-STR follows: 501- 66- (4-6.6 [3280.306(1)]): Reject (~) Parti¢leboard materials used in ~nplications other than SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) floorin~ shall not emit formaldehyde in excess of 0.30 nnm as RECOMMENDATION: Revise Section 4-6.6 to read as follows: soecified in ANSI A208.1-1993. Table A and as measur~J by the air 4-6.6 Anchoring equipment-load resistance. Anchoring chamber test snecified in Section 5-6. equipment shall be te~ed in tile low range of each soil SUBSTANTIATION: This recommended change was originally be capable of resisting an allowable working submitted to HUD by the MHCSS Consensus Committee on 12-30- load equal to or exceeding 3,150 lbs (1.43 x 103kg) and , 93, but no action has been taken. Since NPA 10-92 applies only to withstanding a 50 percent overload (4,725 Ib total) (2.14 x 103kg) flooring products, Subsection 4-8.1 (c) is added to cover all other without failure of either the anchoring equipment or the non-flooring particleboard applications. attachment point on the manufactured home. The Table A value of 0.30 ppm is unchanged from the value cited SUBSTANTIATION: This regulation would particularly affect the in ANSI A208.1-1993 for this item. manufacturing of anchoring equipment. The current certification COMMITTEE ACTION: Accept. criteria for anchors allows testing at the highest end of a soil NUMBER OF COMMFFrEE MEMBERS ELIGIBLE TO VOTE: 13 classification; i.e., an anchor designed for a Class IV A soil might VOTE ON COMMITTEE ACTION: be tested at 340 to 349 inch-lbs soil (using a soil test probe kit AFFIRMATIVE: 13 torque wrench) and be used in a 275 - 285 inch-ibs soil. The anchor would not, therefore, be expected to develop the required working load. This requirement would provide similar protection to the (Log #CP102) consumer as that provided by the wind zone standards, where the Committee: MAN-STR standard is geared toward a "worse case" scenario, rather than the 501- 69 - (4-8.1(d) (New)): Accept pcPMMiTTositeas currently exists with anchors. SUBMITTER: Technical Committee on Strncutral for EE ACTION: Reject. Manufactured Housing COMMITTEE STATEMENT: The proposal does not identify what RECOMMENDATION: Add a new 4-8.1(d) to read as follows: constitutes the low range of a soil classification. It also does not (d) Medium Density Fiberboard (MD~ shall not emit provide any limits or values to be used to assess this range. The formaldehyde in excess of 0.3 nnm. as snecifled in ANSI A208.2 definition of anchoring equipment does not indicate that soil measured bY the ai r chamber test specified in Section 5-6. conditions is part of the overall component. Anchoring Also, add to the Chapter 11, Referenced Publications, the equipment is independent of the soil classification. A soil following: classification and the acceptable limits is directly related to the ANSI Publications: provisions of a ground anchor. It is recognized that there is some ANSI A 208.2 Medium Density Fiberboard for Interior Use. 1994. stification in establishing a minimum criteria associated with soil SUBSTANTIATION: The text is being added to recognize this classifications and the overall application of the anchoring type of product that is being used in the production of a provisions, but this should be addressed in a separate section with manufactured home. measurable and defined limits. COMMITTEE ACTION: Accept. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 VOTE ON COMMITTEE ACTION: VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 13 AFFIRMATIVE: 13

(Log #48) (Log #18) Committee: MAN-STR Committee: MAN-STR 501- 67 - (4-8.1(b) [3280.308(a)(2)]): Accept 501- 70 - (4-9 [3280.309]): Reject SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) SUBMITTER: Kurt Pugh, State of Oregon RECOMMENDATION: Revise Section 4-8.1(b) to read as follows: RECOMMENDATION: Revise text to read: (b) Particleboard used as floorin~ materials (manufactured "Each manufactured home shall have a health notice on home deckin~ - MHD) shall not emit formaldehyde in excess of formaldehyde emissions prominently displayed manner in the 0,g0.20 parts permillion (ppm) as specified in ANSI A208.1-1993. kitchen cabinet or exposed cabinet face." Table B and as measured by the air chamber test specified in SUBSTANTIATION: In today's homes there is not the concern Section 5-6. of formaldehyde levels of the past. Either eliminate this SUBSTANTIATION: This recommended change was originally requirement or just make it part of the homeowners packet. submitted to HUD by the MHCSS Consensus Committee on 12-30- COMMITTEE ACTION: Reject. 93, but no acdon has been taken. The particleboard industry COMMITI'EE STATEMENT: Committee action is for consistency approved NPA 10-92, a voluntary standard limiting formaldehyde with the action taken on Proposal 501-71 (Log #50). emissions from particleboard flooring products (MHD), in May NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13

349 NFPA 501 -- MAY 2000 ROP

VOTE ON COMMITTEE ACTION: (Log #108) AFFIRMATIVE: 13 Committee: MAN-STR 501- 72 - (5-1.1 [3280.401(a)] ): Accept in Principle SUBMITTER: Michael L Zieman, RADCO RECOMMENDATION: Add the following text after the sentence (Log #50) in the middle of the paragraph which ends "...rupture, fracture, or Committee: MAN-STR excessive yielding." 501- 71 - (4-9 [3280.309]): Accept (~qote: Design live load deflection criteria does not apply when SUBMITTER: Frank Walter, Manufactured Housin~ Inst. (MHI) 1;he structural assembly bein~ evaluated does not include structural RECOMMENDATION: Delete Section 4-9 in its enuret~. framin~ members. For example: exterior metal sidin~ tests where the metal sidin~ and its fastenin~ are evaluated but the frarnine ~C ..... an .... ur ...... svstem, necessary to test the metal siding, is not bein~ evaluatedA ...... I ...... i-" ...... i • F! SUBSTANTIATION: This is common sense but the clarification The notice ~h:ll read a~ fol!c;':~: is needed to correct actual and potential misinterpretations. In IMPOP.T~?T HF_.~LTH NOTICE the example above for exterior metal siding test the framing system used in the actual home would be separately substantiated by calculations or other tests which would include an evaluation for and = :x.-'icv/of .A~t.hma L:!'.e =).~..Fte.'~m, !~c!~g c~ort~e~ of conformance to deflection criteria in 4-5.4 [3280-305(d)]. COMMITTEE ACTION: Accept in Principle. Revise 5-1.1 and add a new appendix note to read as follows: 5-1.1" Proof Load Tests. Every structural assembly tested shall be hlst~.~ of---.ma, .... ~,,w, ...... ~ v ...... , .... ~ .... ~ ..... l~k. capable of sustaining its dead load plus superimposed live loads

...... ^ ¢ .... IA ^K,.. ,,.~ ~ equal to 1.75 times the required live loads for a period of 12 hours Reduced ;'e~*.J"!=t.:c~ re=u!~g from ...... ~ eff:c:.e~c7 =~dzrd= without failure. Tests shall be conducted with loads applied and deflections recorded in 1/4 design live load increments at 10- minute intervals until 1.25 times design live load plus dead load be cbm'ned from = F~=:.-'e ~." .m.ec~=.n:.c~~ ;':a~!=~: =}:tem has been reached. Additional load shall then be applied continuously until 1.75 times design live load plus dead load has been reached. Assembly failure shall be considered as design live --.t~I,.T:~k...... :~A~^- temperature: a.-=~ ~um:~V/.-a::c" " " fcr~!2c~7~c load deflection (or residual deflection measured 12 hours after live !e;-c'z. ~?,~c~ ~- .'-..~mc "z t~ ~c Iccatc~ "n m-eve :'~'~jcct t.~ cxL-cmc load removal) that is greater than the limits set in 4-5.4, rupture, fracture, or excessive yielding. DesiDa live load deflection criteria sh~ll not apply when the structural assembly beiqg eval~tcd does not include structural framin~ members. An assembly to he tested de~, b ...... ~, -~ ...... shall be of the minimum quality of materials and workmanship of the production. Each test assembly, component, or subassembly shall be identified as to type and quality or grade of material. All assemblies, components, or subassemblies qualifying under this test shall be subject to a continuing qualification testing program acceptable to the regulatory agency...... he ...... ~ ~'~ v--t} v .... to A-5.1.1 Examples for when desimn live load deflection criteria does not apply are: exterior cladding tests where the cladding and purF~c: c~.cr ~a== rczz2e. its fastening are evaluated but the framinv system, necessary to test the cladding, is not bein~ evaluated.) COMMITTEE STATEMENT: The proposal was revised to be in SUBSTANTIATION: This recommended change was originally mandatory language. An appendix note was created to address the submitted to HUD by the MHCSS Consensus Committee on 12-29- 92, but no action has been taken. There is no difference in the nonmandatory references of the examples as noted in the prol~osal. The term "metal siding" was changed to "cladding" for materials used in manufactured homes versus site-built homes or clarification and to identify that this is not just limited to metal modular homes, which require no health notices. MA~tr There is no evidence that this Health Notice is instrumental in protecting the public or in preventing litigation. ~I~I~IIER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 VOTE ON COMMITTEE ACTION: Since 1985 when the formaldehyde product standards for plywood and particleboard became effective, there has been a lot AFFIRMATIVE: 13 of progressJn lowedng formaldehyde levels in homes. Other high emitters, such as cigarette smoke, are not regulated by the Standard. The Health Nodce is only a sales deterrent and should be (Log #109) eliminated. It only complicates an issue that is already Committee: MAN-STR misunderstood by the public in general. 501- 73 - (5-1.2 [3280.401(b)]): Accept in Principle COMMITTEE ACTION: Accept. SUBMITTER: Michael L. Zieman, RADCO NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 RECOMMENDATION: Add the following text after the sentence VOTE ON COMMITTEE ACTION: in the middle of the paragraph which ends "...rupture, fracture, or AFFIRMATIVE: 12 excessive yielding." NEGATIVE: 1 (Note: Desi~m live load deflection criteria does not apply when EXPLANATION OF NEGATIVE: the structural assembly beine evaluated does not include structural JONES: This warning was enacted due to prior public health framin~ members. For examole: exterior metal siding t~t~ wh¢[¢ concerns and litigation. The reason to remove the warning is not the metal sidin~ and its fastenin~ are evaluated but the framim~ substantiated. system, necessary to test the metal siding, is not being evaluated.) SUBSTANTIATION: This is common sense but the clarification is needed to correct actual and potential misinterpretations. In the example above for exterior metal siding test the framing system used in the actual home would be separately substantiated by calculations or other tests which would include an evaluation for conformance to deflection criteria in 4-5.4 [3280-305(d)]. COMMITTEE ACTION: Accept in Principle. Revise 5-1.2 and add a new appendix item to read as follows: 5-1.2 Ultimate Load Tests. Ultimate load tests shall be performed on a minimum of three assemblies or components to generally evaluate the structural design. Every structural assembly or component tested shall be capable of sustaining its total dead

350 NFPA 501 ~ MAY 2000 ROP load plus the design live load increased by a factor of safety of at 5-~5 Measuring and Loading MethodL Deflectiom in each truss least 2.5. A factor of safety greater than ~.5 shall be used when shall be measured relative to a fixed reference datum. Deflections required by an applicable reference standard in Section 4-4. Tests shall be measured at the free end of an cave or cornice projection shall be conductt'd with loads applied and deflections recorded in and at as many bottom chord panel points as necessary to obtain 1/4 design live load increments at 10-minute intervals until 1.~, an accurate representation of ~he deflected truss(es) but shall be times design live load plus dead load has been reached. - measured at least at the mid-epan and at two quarf~ point~ Additional loading shah then be applied continuously until failure Deflections shall be read and recorded to the nearest 1/16 in. (1.6 occurs, or the total of the factor of safety times the design five load mm). Dead loads shall be applied to the top and bottom chords plus the dead load is reached. Assembly failure shall be and live load to the top chords through a statable hydraulic, considered as design live load deflection greater than the limits set pneumatic, or mechanical system or fveights to simulate loads. in 4-5.4, rupture, fracture, or excessive yielding. Desit,n live load Load.unlts for uniforndy distributed loads shall be separated so defleffion criteria shall not am)Iv when the structural msemblv that arch action does not occur, and shall be spaced no greater bein~ evaluated does not include structural framln~ memhem. than 12 in. ($05 nun) on center so as to simulate uniform loading. Assemblies to be tested shall be representative of av~age quality or Bottom chord loading shall be spaced as uniformly as practical. materials and workmanship of the production. Each test assembly, Truss gravi~ loa& shall be calculated based on the overall truss component, or suh-~t~embly shall be identified as to type an41 len~}th (hortsontal projection) including cave or cornice quality or grade of material. All assemblies, components, or pro ections. subassemblies qualifying under this test shall be subject to a ~.4 General Test Procedures. General test procedurt* include periodic qualification testing program acceptable to the regulatory the following methods. agency. 5-2.4.1 Dead Load. Measure and record initial elevation of the A-5.1.2 Examples for when desima live load deflection criteria trnss(es) in the lest position at no load. When trusses are does not annlv are: exterior clad~lint~ tests where the claddin~ and arranged according to Section 5-~2.2(c), the no load to dead load measurement is not required. Apply dead loads to the top and its fastenin~ are evaluated but the framin~ s~tem, nec~Jmrv to test bottom chord of the trnR d~t are representative of the weights of the cladding, is not heine eualuatecL~ the materials to be supported by the truss. The actual ceiling/roof COMM~ STATEM]gNT: The prop'osai was revised to be in assembly dead loads shall be used with a minimum of 5 psf on the mandatory language. An appendix note was created to address the top chord and $ psf on the bottom chord. Greater dead loads~ nonmandatory references of the examples as noted in the shall be applied to the top and bottom chords if required, to proposal. The term ~metal siding" was changed to "cladding" for represent the actual loads. Dead loach to be applied to the truss clarification and to identify that this is not jnst limited to metal test assembly shall be permitted to include only the weights of materials supported by the truss and not the weight of the truss itself. However, readings from load cells (when used) on which VOTE ON COMMITTEE ACTION: the teat truss rests shall reflect the sum of the'applled load plus the AFFIRMATIVE~ 15 weight of the truss. Apply dead loads and holdfor five minutes. Measure and record the deflections. 5-2.4.2 Live~ Load. Maintaining the dead loads, apply live load to the top chord in approximate 1/4 live load increments until dead (Log #Sl) load plus 1.25 times the llve load ~ reachecL Measure and record Committee: MAN-STR the deflections at a minimum of five minutes aRer each live load 501- 74 - (5-2 (New) [3280.402, New]): Reject increment has been applied. Apply incremental loads at a. SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) uniform rate such that approximately one-half hour is requiredto RECOMMENDATION: Delete Section 5-2 and substitute the reach full design live load. following: (Underlining omitted for clarity) 5-2.4.$ Overload Phase. Additional "lo~in~ shall then be 5-2 Test Procedure for RoofTrnsses. liapplied continuously until the dead 10ad plus 2.5 times the design 5-2.1 Roof Load Tests. The following is an acceptable ve load is reached. This overload condition shall be maintained procedure for roof truss testing. Where roof trusses act as support for five minutes. After five minutes, remove the overload and for other members, have eave or cornice projections or support design live load leaving the design dead load in place. Record the concentrated loads, roof trusses shall be tested for those truss recovery within the next four hours, conditions. 5-2.4.4 Acceptance Criteria. The ~alss design shall be 5-2.2 General. T~amtes shall be permitted to be tested in a considered to have passed if all of the following conditions are test fixture, which replicates the design load& and actual support met: points and does not restrain horizontal movement. When tested (a) No load to dead load deflection shall be less than L/480 for singly or in groups of two or more trusses, trusses shall be simply supported clear spans and less than Lo/240 for eave and mounted on supports positioned to give the required dear span cornice projections, anct distance (L) and eave or cornice distance (Lo) if applicable as (b) Dead load to design live load deflection shall be less than specified in the design. Truss tests shalt be performed on a L/240 for simply rdppo.rted clear spans and less than Lo/120 for minimum of three trusses to evaluate the truss design. eave or cornice projections, and 5-2.2.1 When trusses are tested singly, trusses shall be positioned (c) The truss shall maintain the overload condition for five in a test fixture with supports properly located and have the roof minutes without failure, and loads evenly applied. (d) The truss shall recover to at least L/240 for simply su.pj~rted 5-2.2.2 When tested in groups of two or more trnsses,the top clear spans and Lo/120 for eave aiad cornice projections within chord shall be permitted to be sheathed with 1/4 in, (6 mm) thick four hours after the overload condition and design live load have nominal 12 in. (305 ram) wide plywood strips. The plywood strips been removed. shall be at leastlong enough to cover the top chords of the trusses. 5-2.5 Test Procedure for Bowstring Trusses Only. Bowstring Adjacent plywood strips shall be separated byat least 1/8 in. (3 U-uss(es) test procedures include the followin~ methods. ram). The plywood strip shall be nailed with 4d nails or 5-2,5.1 Dead Load. Measure and record initial elevation of equlvalent staples not closer than 8 in. (203 mm) on center along truss(es) in the test position at no loacL When trusses are the top chords. The bottom chords of the trusses shall be arranged per Section 5-2.2.2(c) the no load to dead load permitted to be either. measurement is not require& The actual ceiling/roof assembly (a) unbraced, or dead loads shall be used with a minimum of $ psf on the top (b) laterally braced tog~ether (not cross braced) with 1 in. g 2 in. chord and 2 psf on the bottom chord. Greater dead loads shall be (25 mm x 51 ram) stripling not closer than 24 in. (610 mm) on applied to the top and bottom chords, if required, to represent the center nailed with only one 6<1 nail at each truss actual loads. Dead Loads to be applied to the truss test assembly t (obeC) as an alternate the top and bottom chords shah be per-~dtted shaft be permitted to include only the weights of materials braced and covered with a material and with the connections supported by the truss and not the weight of the truss itself. or method of attachment as specified for the completed However, readings from load cells (when used) on which the test manufactured home. truss rests shall reflect the sum of the applied loads plus the weight of the truss. Apply dead loads and hold for five *minutes. Measure and record the deflections. NFPA 501 -- MAY 2000 ROP

5-2.5.2 Live Load. Maintaining the dead loads, apply live load to SUBSTANTIATION: This recommended change was originally the top chord in approximate 1/4 live load increments until dead submitted to HUD by the MHC~KS Consensus Committee on 1-31- load plus 1.25 times the live load is reached. Measure and record 89, but no action has been taken. Truss testing by HUD as well as the deflections at a minimum of five minutes after each live load industry changes in roof design in recent years have indicated a increment has been applied. Apply incremental loads at a need to provide more stringent initial qualification of truss design. uniform rate such that approximately one-half hour is required to This will assure that subsequent production of trusses will meet reach full design live load. the requirements of the NFPA 501 Standard. 5-2.5.3 Overload Phase. Continue to load truss to dead load Test procedures for manufactured home roof trusses are plus 1.75 times the design live load. Maintain this loading for 12 intended to ensure substantial compliance with Section hours and inspect the truss for failure. Remove all loads except 4-5.4 of the NFPA 501 Standard, which specifies a maximum the dead load. Record the recovery within the next 12 hours. deflection of L/180 for roof and ceiling structural assemblies, 5-2.5.4 Acceptance Criteria. The truss design shall be subjected to total design live loads. The requirements of the considered to have passed if all of the following conditions are section have proven adequate over time and do not require met: modification. While the truss test procedure deflection criteria are (a) No load to dead load deflection shall be less than L/480 for more stringent than the assembly deflection criteria in Section 4- simply supported clear spans and less than Lo/240 for eave or 5.4, the follow-up testing portion of this change continues to cornice projections, and specify a deflection of L/180 for the tested truss(es). (b) Dead load to design llve load deflections shall be less than This change is suggested as a total replacement for Section 5-2 L/180 for simply supported clear spans and less than Lo/90 for and was developed as a voluntary industry standard for truss eave or cornice projections, and testing. (c) The truss shall maintain the overload condition for 12 hours COMMITTEE ACTION: Reject. without failure, and COMMITTEE STATEMENT: The substantiation for this proposal (d) The truss shall recover to at least L/180 for simply supported discusses a design deflection of L/180 for roof trusses, yet the clear spans and Lo/90 for eave or cornice projections within 12 testing procedure uses a standard of L/240 in several instances. hours after the overload condition and design live load have been The recovery deflection criteria in the ultimate load test seems to removed. be a new standard which could be a significant change. No Exception: Bowstring trusses shall be permitted to be tested in justification was provided to warrant this change. The dead load accordance with the general test procedures in Section 5-2.4. deflection is additive to the live load deflection which again 5-2.6 Uplift Test. This test shall be required on a minimum of appears to be an increase in tested capacity. Finally, the test one truss for each truss design, which can be critical under uplift rocedures are different for bow string versus other trusses, ~,et load conditions. ~ oth configurations are designed to perform the same funcuon. 5-2.6.1 Zero Load. Measure and record initial elevation of the The research, data, and recommendations associated with May truss in an inverted test position at no load. 1988 TAC Truss Task Force report which yielded the bulk of this 5-2.6.2 Design Load. Apply the design load to the bottom chord proposal was not provided, which in turn did not permit the of the truss. Design load for the clear span is one times the wind means to facilitate a substantive debate. It is the recommendation net uplift load and for any cave or cornice projection of the truss, and action of the committee that a task group will be developed to 2.5 dmes the wind net uplift load. Measure and record the research and study this issue and make recommendations to the deflection 5 minutes after the load has been applied. Design load committee. deflection shall be less than L/180 for simply supported clear NUMBER OF COMMITrEE MEMBERS ELIGIBLE TO VOTE: 13 spans and less than Lo/90 for cave or cornice projections. VOTE ON COMMITTEE ACTION: 5-2.6.3 Overload. Continue to load the truss to 1.75 times the AFFIRMATIVE: 13 design load. For the clear span length, this is 1.75 times the wind net uplift load: for eave or cornice projections this is 1.75 times wind net uplift load. Maintain this load for 3 hours. (Log #CP101) 5-2.6.4 Recovery. Remove applied loads and within 3 hours of Committee: MAN-STR load removal, the truss must recover to at least L/180 for simply 501- 75 - (5-3.2, 5-3.3, 5-3.5): Accept supported clear spans and Lo/90 for cave or cornice projections. TCC NOTE: The Technical Correlating Committee on 5-2.7 Follow-Up Testing. Follow-up testing procedures include Manufactu/ed Housing (MAN-AAC) directs that a public the following. comment be submitted in the Correlating Committee's name 5-2.7.1 Production trusses qualifying under these test procedures requesting that the term "skylight" be added to the title of Section shall be subject to a continuing witnessed independent third party 5-3 as noted in Mr. Pabian's comment on his affirmative ballot. or a DAPIA approved testing program. Manufacturers of listed or SUBMITTER: Technical Committee on Strucutral for labeled trusses shall follow an in-house quality control program Manufactured Housing approved by an independent third party. Home manufacturers RECOMMENDATION: Revise 5-3.2, 5-B.B, and 5-3.5 as follows: producing trusses which are not listed or labeled, for their own 5-3.2* Performance. use, shall be subject to a follow-up testing program acceptable to 5-3.2.1 All primary windows and sliding glass doors shall comply their design approval agency, including an appropriate testing with AAMA Standard 1701.2, Primary Window and Sliding Glass frequency. Door Voluntary Standard for Utilization in Manufactured Housing. 5-2.7.2 Follow-up testing for bowstring trusses qualified under Exception: l he exterior and interior standard wind pressure tests the Bowstring testprocedures shall be conducted in the same way shall be conducted at the design wind loads required for as the inidal qualification test procedure with the modifications components and cladding specified in 4-5.3.1. that the overload phase is held for 4 hours instead of 12 hours. 5-3.2.2 All skylights shall comolv with AAMA 1600-90 Volutlta~ 5-2.7.3 Follow-up testing for non-bowstring trusses shall be Soecifications for Skylights. Skylights shall comply with components conducted in the same way as the initial qualification test rocedure with modification that acceptance deflections at live and claddin~ design wind pressures sl?edfied in 4-5,$,1 , ad and at recovery after overload are limited to L/180 for simply 5-3.3 Installation. supported clear spans, and L/90 for cave or cornice projections. All primary windows, a~ sliding glass doors, and skylights shall 5-2.7.4 Truss designs that are qualified but not in production are be installed in a manner that allows proper operation and provides not subiect to follow-up testing until produced. protection against the elements. (See Section 4-7.) 5-2.7.g The frequency of truss manufacturer quality control 5-3.5 Certification. follow-up testing for bowstring trusses qualifying under the 5-3.5.1 All primary windows and sliding glass doors to be bowstring procedure shall be one test in 2000 trusses produced or installed in manufactured homes shall be certified as complying once every 6 months, whichever is more frequent, for every truss with AAMA Standard 1701.2, Primary Window and Sliding Glass design. Door Voluntary Standard for Utilization in Manufactured Housing. 5-2.7.6 The frequency of truss manufacturer quality control This certification shall be based on tests conducted at the design follow-up testing for trusses qualifying under the general test wind loads specified in 4-5.$.1. procedure shall be on test in 4000 trusses or once every 6 months, whichever is more frequent, for every truss design.

352 NFPA 501 ~ MAY 2000 ROP

5.3.5.2 All skylights to be installed in manufactured homes shall (Log #132) be certified as comnlvimz with AAMA 1600-90 Voluntary Committee: MAN-MEC Snecificafions for Skvlights. This certification shall be based on 501- 77- (6-3 [3280.503]): Reject ar)Dlicable design wind loads snecified in 4-5.3.1. SUBMITTER~ Richard P. Thornberry, Cellulose Insulation Manufacturers Assn. 5~3.5.fi All such windows, ~._qd doors, and skylight shall show RECOMMENDATION: Revise text as follows: evidence of certification by having a quality certification label 6-3 Materials. Materials used for insulation shall be of proven affixed to the product in accordance with ANSI Z34.1, For effectiveness and adequate durability to ensure that required design Certification - Third-Party Certification Program. conditions concerning thermal transmission are attained. For fire 5-3.5.4 In determining certifiability of "J~ewindow and sliding safety reouirements for insulation materials, see Section 3-7. glass door products, an independent quality assurance agency shall SUBSTA]NTIATION: This proposal provides a cross-reference to conduct preproduction specimen tests in accordance with AAMA the section on fire safety requirements for foam plastic thermal 1701.2. Further, such agency shall inspect the product insulating materials so that they aren't overlooked during the manufacturer's facility at least twice per year. energy design of the structure. This makes the standard more SUBSTANTIATION: The revisions are to update the provisions user-friendly. related to skylights and the latest available documents addressing COMMITTEE ACTION: Reject. them. The referenced standard provides the means to adequately COMMITTEE STATEMENT: The proposed cross-reference is not address the interior and exterior wind loads, and safety factors for needed. skylights. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 COMMITTEE ACTION: Accept. VOTE ON COMMYVI'EE ACTION: NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 AFFIRMATIVE: 12 VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 13 COMMENT ON AFFIRMATIVE: PABIAN: The title of Section 5-3 should be revised to include (Log #CP415) the term "skylights~ as changes to skylights are being proposed to Committee: MAN-MEG specific paragraphs of this section. Paragraph 5.3.2.2 should be 501- 78 - (6-3): Accept revised to clarify that the design wind pressures for components SUBMITrER: Technical Committee on Mechanical for and cladding-exterior roof coverings, sheathings, and fastenings Manufactured Housing would apply. [ RECOMMENDATION: Revise 6-3 as follows: [ 6-3 Materials. Materials used for insulation pressure envelopes shall be of proven effectiveness and adequate (Log #173) [ durability to ensure that required design conditions concerning Committee: MAN-STR [ thermal transmission and ener~ conservation are attained. 501- 7fi - (5-4.3.2 [3280.404(c)(2)]): SUBSTANTIATION: Material effectiveness is more than just [ TCC NOTE: The Technical Correlating Committee on ensuring thermal transmission is attained under design conditions [ Manufactured Housing (MAN-AAC) directs that a public since insulation materials provide year-round benefits, not jnst on [ comment be submitted in the Correlating Committee's name the design day. [ requesting that the Technical Committee's action on this proposal COMMITTEE ACTION: Accept. be changed to aAccept in Principal" because this reflects the NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 • } appropriate action the Technical Committee took on this VOTE ON COMMITTEE ACTION: [ proposal. AFFIRMATIVE: 12 ~;UI~MITrER: Mark Khoshnevissan, Fleetwood Enterprises RECOMMENDATION: Add the following sentence to middle of section: "...without binding or requiring the use of tools. Windows that (Log #110) require the remgval of the sash to mgct egress size requir¢Inents Committee: MAN-MEC 501- 79 - (6-4 (New) [3280.504] ): Accept in Principle are prohibited. Any window or device failing this..." SUBMITTER: Michael L. Zieman, RADCO SUBSTANTIATION: 1. This would prohibit windows that RECOMMENDATION: Add a new Section 0-4.3. Revise require multiple, complicated steps (as many as elevenl) to numbering of existing 6-4.3 and subsequent section numbers to operate. The only steps required would be to open window and match. New Section 6-4.3 to read as follows: egress. 6-4.3 Liquid Applied Vapor Retarders. Liquid applied vapor 2. This would eliminate complicated and lengthy window labels retarders shall be listed for use on the specific substrate to which it that might only confuse the homeowner in case of a fire. is applied. The listing shall include the perm rating(s) (as COMMITTEE ACTION: Accept. measured by ASTM E 96, Standard Test Methods for Water Vapor Accept the proposal as submitted and add "by normal operation Transmission of Materials) and associated application rate(s) for of the window" to 5-4.3.2 so that it reads as follows: the specific substrate(s). 5-4.3.2 An operational check of each installed egress window or SUBSTANTIATION: I have personal experience which device shall be made at the manufactured home factory. All egress demonstrates theseproducts often do not achieve in actual use the windows and devices shall be capable of being opened to the perm rating claimed. In one such case the supplier applied his minimum required dimension E)" =c,rm~2 =~zm~=. ~f ck.c ;;'=~=-;- product to a sheet of glass. After it had dried he carefully peeled it without binding or requiting the use of tools. Windows that off then subjected it to the ASTM E 9fi test. The resulting perm reouire the removal of the sash to meet egress size reouirements rating was the claimed value for the product. However, when the are orohibited. Any window or device failing this check shall be same product was applied to an actual substrate such as gypsum or repaired or replaced. A repaired window shall conform to its plywood and then tested the resulting perm rating was certification. Any repaired or replaced window or device shall approximately 10 times higher than the claimed value. By adding pass the operational check. the "listed" requirement the users of these products will have some COMMITTEE STATEMENT: The addition of the phrase "by degree of assurance that the formulations have not changed and normal operation of the windoW' was intended to clarify that the that they continue to perform to the stated values. minimum required dimensional opening is to be achieved without COMMITTEE ACTION: Accept in Principle. any special operating procedures besides those that would be Add a new 6-4.3 and renumber subsequent paragraphs as follows: considered a normal o~ration. ] 6-4.3 Liquid Applied Vapor Retarders. Liquid applied vapor NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 [ retarders shall be tested by a nationally recol~nized testing agency VOTE ON COMMITrEE ACTION: [ for use on the specific substrate to which it ts applied. The test AFFIRMATIVE: 13 I report shall include the perm rating(s) (as measured by ASTM E COMMENT ON AFFIRMATIVE: [ 96, Standard Test Methods for Water Vapor Transmission of TUCKER: Committee Action should be Accent in PtinciDle not [ Materials) and associated application rate(s) for the specific Accent. The committee added wording to the original proposal. ] substrate(s). COMMITTEE STATEMENT: The committee believes testing by a nationally recognized laboratory will yield the desired results, rather than requiring materials to be listed.

~53 NFPA 501 -- MAY 2000 ROP

NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 COMMITTEE ACTION: Reject. VOTE ON COMMITTEE ACTION: COMMITTEE STATEMENT: The substantiation submitted does AFFIRMATIVE: 12 not adequately justify the proposed exceptions. NUMBER OF COMblI'Iq'EE MEMBERS ELIGIBLE TO VOTE: 12 VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 12 (Log #158) Committee: MAN-MEC 501- 80 - (6-4.1.1 [3280.504(a) (1)]): Reject SUBMITTEP¢ Richard P. Thornberry, Cellulose Insulation (Log #23) Manufacturers Assn. Committee: MAN-MEC RECOMblENDATION: Add new 6-4.1.1 to read: 501- 82 - (6-4.2.1 [3280.504(2)(b)(1)] ): Accept in Principle 6-4.1 Ceiling Vapor Retarders. SUBMITTER: Dana C. Roberts, State of Oregon 6-4.1.1 Add 3 new Exceptions to read as follows: RECOMMENDATION: Revise text to read: Exception No. 1: In construction in which moisture or its "Exterior walls shall have a vapor barrier not greater than 1 perm freezing will not damage the materials. (day cup method) installed on the fim'ng :~ace appropriate side Exception No. 2: Where the roof cavity is ventilated to allow of the wall to prevent moisture condensation in the wall." moisture to escape so as to prevent condensation. SUBSTANTIATION: 3280-504 was changed to adopt the energy Exception No. 3: Where other approved means to avoid conservation methods appropriate for the Northwest and condensation and leakage of moisture are provided. Northeast. However down South, especially the Southeast where SUBSTANTIATION: The proposed exceptions allow air conditioning coupled with high humidity changes the side of performance alternatives to the required vapor retarder when the the wall for heat/moisture transfer; moisture condensation is same results can be attained. Exceptions No. 1 and No. 3 allow occurring on the interior walls; especially those with vinyl the use of insulation materials without vapor retarders or wallpaper. ventilation within the roof cavi W which can be shown by tests and COblKflTTEE ACTION: Accept in Principle. evaluations to prevent condensation within the concealed space. See Committee Action on Proposal 501-101 (Log #56). Presently, the Cellulose Insulation Manufacturers Association is COMMITTEE STATEMENT: The Committee Action on Proposal funding a study to develop the appropriate test protocols and 501-101 (Log #56) should meet the submitter's intent. evaluation procedures to demonstrate that cellulose insulation may NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 be used under these conditions without causing condensation VOTE ON COMMITTEE ACTION: within the insulated wall cavity. AFFIRMATIVE: 12 COMblITTEE ACTION: Reject. COb4MITTEE STATEMENT: The substantiation submitted does not adequatelyjustifT the proposed exceptions. N~ER OF COMIdITTEE MEIdBERS ELIGIBLE TO VOTE: 12 (Log #174) VOTE ON COMMITTEE ACTION: Committee: MAN-MEC AFFIRMATIVE: 12 501- 83 - (6-4.2.2 [3280.504(b)(2)] ): Accept in Part SUBMITTER: Dick Veenstra, Fleetwood Enterprises RECOMMENDATION: Add the following new text: "...performance of not less than 4.0 perms. In ventilated wall (Log #137) c~vities, the exterior coverin~ and/or sheathin~ may have a Committee: MAN-MEC ~gmbincd permeance of less than 5.0 Derms. orovlded that there is 501- 81 - (6-4.2 Exception No. 1, No. 2, and No. 3 (New) vat)or barrier of one perln (dry cut) method~ or less on the w'#rm [3280.504(b) (1)]): Reject side of the wall. and that neither the-sheathin~ nor the exterior SUBMITTER: Richard P. Thornberry, Cellulose Insulation Manufacturers Assn. coverin~ have an individual term ratin~ of less than the vaoor RECOMMENDATION: Add new 6-4.2 to read: barrier installed on the warm side of tl~e wall. When no vapor 6-4.2 Exterior Wails. barrier is installed on the warm side of the ventilated wall cavity. 6-4.2.1 Add 3 new Exceptions to read as follows: t,be combined nermeance of the coverin~ and/or sheathin~ sh~l Exception No. 1: In construction in which moisture or its be not less than 5.0 nerms. In...". freezing will not damage the materials. SUBSTANTIATIOI~: Incorporate the Interpretive bulletin F-1-76. Exception No. 2: Where the wall cavity is ventilated to allow COMMITTEE ACTION: Accept in Part. moisture to escape so as to prevent condensation. Revise 6-4.2.2 as follows: Exception No. 3: Where other approved means to avoid "...performance of not less than 4.0 perms. condensation and leakage of moisture are provided. cavities, the exterior coverin~ and/or sheathin~ may have a 6-4.2.4 Add 2 new Exceptions to read as follows: combined nermeance of less-than 5.0 terms, orovided that there is Exception No. 1: In construction in which moisture or its freezing will not damage the materials. a vapor bal'rier of one nerm (dry CUD method) or less on the warm Exception No. 2: Where other approved means to avoid side-of the wall. and that neither" the-sheathing nor the exteri9r condensation and leakage of moisture are provided. covering have an individual perm rating of less than the vapgr SUBSTANTIATION: The proposed exceptions allow barrier installed on the warm side of the wall, In..." performance alternatives to the required vapor retarder when the COMMITTEE STATEMENT: The last sentence deleted from the same results can be attained. Exceptions No. 1 and No. 3 allow proposal is redundant. the use of insulation materials without vapor retarders or NUMBER OF COMbflTTEE MEMBERS ELIGIBLE TO VOTE: 12 ventilation within the wall cavity which can be shown by tests and VOTE ON COMMITTEE ACTION: evaluations to prevent condensation within the concealed space. AFFIRMATIVE: 12 Presently, the Cellulose Insulation Manufacturers Association is funding a study to develop the appropriate test protocols and evaluation procedures to demonstrate that cellulose insulation may be used under these conditions without causing condensation within the insulated wall cavity.

354 NFPA 501 -- MAY 2000 ROP

(Log #52) Committee: MAN-MEC 501- 84 - (6-4.2.5 (New) [3280.504(b)(4), New]): Accept in Principle SUBMITTER= Frank Walter, Manufactured Housing Inst. (MHI) RECOMMENDATION: Add a new Section 6-4.2.5 to read as follows: 6-4.25 Homes manufactured to be sited in "humid climates" as shown in Fimare 6-4.2.5 (figure 16. Chapter 21. 1989 ASHRAE Handbook of Fundamentals) shall be permitted to have a vapor retarder of not greater than 1 perm (dry cup method~ on the exterior side of the wall insulation. ",S'_..--/--f"- ..L ...... : ..... ~-~ ¢ .... -"~

i..lawall ~ ...... ! ( ! ,. r"

Figure 6-4.2.1

COMMITTEE STATEMENT: Editorial changes and relocation intended for clarification. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 12

k [ (Log #53) Committee: MAN-MEC 501- 85 - (6-4.3 (New) [3280.504(c), New]): Reject SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) Figure 6-4.2.5. RECOMMENDATION: Add a new Section 6-4.$ to read as follows and re-deslgnate remaining sections accordingly: SUBSTANTIATION: This recommended change was originally 6-4.3 Floor Vapor Retarder. submitted to HUD by the MHCSS Consensus Committee on 12-30- 6-4.3.1 Floors shall have a vapor retarder nor greater than 1 perm 93, but no action has been taken. The language stipulates that you can install an optional vapor retarder in humid climates if needed (dry cup method~ on the exterior side of the insulation. by design analysis. SUBSTANTIATION: This recommended change was originally COMMITTEE ACTION: Accept in Principle. submitted to HUD by the MHCSS Consensus Committee on 12-29- Revise 6-4.2.1 as follows: 92, but no action has been taken. The proposed change will 6-4.2.1 Exterior walls shall have a vapor barrier no greater than 1 restrict moisture migration from the ground through the floor and perm (dry-cup method) installed on the living space side of the into the living space. wall. Homes manufactured to be sited in "humid climates" or COMMITTEE ACTION: Reject. "fringe clilnates" ~,s shown in Figure 6-4.2.1 shall be permitted to COMMITTEE STATEMENT: Sufficient technical justification for the proposal has not been provided. have the vapor retarder installed on the exterior side of the wall NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 insulation. VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 12

(Log #111) Committee: MAN-MEC 501- 86 - (6-4.3.1 [3280.505(c)]): Accept SUBMITTER: Michael L. Zieman, RADCO RECOMMENDATION: Move the last two sentences from subparagraph (a) which begins "A clear air passage space..." to the very beginning of the section. SUBSTANTIATION: There has been confusion as to whether or not the 1 in. clear air passage requirement applied to both passive and mechanical vented spaces. By moving these sentences to the very beginning of the text [ahead of subparagraph (a) and (b)] the confusion will be eliminated and it will be clear that the requirement applies regardless of ventilation method. I believe this was the original intent and conforms to good moisture control science. COMMITTEE ACTION: Accept. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 12

355 NFPA 501 -- MAY 2000 ROP

(Log #CP416) Fundamentals is the current edition; the 1989 edition can not be Committee: MAN-MEC purchased from ASHRAE at this time. Table 5 is the correct 501- 87- (6-5.1): Accept location for Uo values in the 1995 edition. SUBMITrER: Technical Committee on Mechanical for HUD published a final rule in the Federal Register on October Manufactured Housing 25, 1993 that updated the thermal energy design of manufactured RECOMMENDATION: Revise 6-5.1 as follows: homes. In this final rule the 1993 edition of the ASHRAE Standard 6-5.1 Envelope Air Infiltration. was referenced. The opaque envelope shall be designed and constructed to limit COMMITTEE ACTION: Accept in Principle. air infiltration to the living area of the home. Any design, material, See Committee Action on Proposal 501-94 (Log #1:30). method, or combination thereof that accomplishes this goal shall COMMITTEE STATEMENT: The Committee Action on Proposal be permitted to be used. The goal of the infiltration control 501-94 (Log #130) should meet the submitter's intent. criteria is to reduce heat loss/heat gain due to infiltration, limit NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 moisture transfer that causes condensation and reduce draft that VOTE ON COMMITTEE ACTION: ¢~uses comfort nroblems, zz rn.uch zz p~'h!c ":fi~c.ut "m#.ng~ng AFFIRMATIVE: 12 or. hcal*-h and can'.dart ;;~thin the !im!~a c.f rcazanaSl¢ cc~n~m'cG. SUBSTANTIATION: The proposal further clarifies the performance objectives of the air infiltration criteria. See the companion Proposal 501-222 (Log #CP417) for additional (Log #CP420) appendix material. Committee: MAN-MEC COMMITTEE ACTION: Accept. 501- 90 - (6-8.3): Accept NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 SUBMrITER: Technical Committee on Mechanical for VOTE ON COMMITTEE ACTION: Manufactured Housing AFFIRMATIVE: 12 RECOMMENDATION: Revise 6-8.3 as follows: 6-8.3 Areas where the insulation does not fully cover a surface or is compressed shall be accounted for in the U calculation (see Section 6-6). The effect of framing on the U value shall be (Log #CP419) included in the U 0 calculation. Other low-R-value heat-flow paths Committee: MAN-MEC ("thermal shorts") shall be explicitly accounted for in the 501- 88 - (6-6.1.3): Accept calculation of the transmission heat loss coefficient if, in the SUBMITTER: Technical Committee on Mechanical for aggregate, all types of low-R-value paths amount to more than 1 Manufactured Housing percent of the total exterior surface area. or 40 so ft. whichever is RECOMMENDATION: Revise 6-6.1.3 as follows: less. Areas shall be considered low-R-value heat-flow paths if the I 6-6.1.3 Manufactured homes designed for U 0 value Zone $ shall following apply:. [ be factory-equipped with storm windows or insulating glass. (a) They separate conditioned and unconditioned space. I |llterior mounted storm window frames shall be sealed, (b) They are not insulated to a level that is at least one-half the SUBSTANTIATION: Unless properly sealed, storm windows do nominal insulation level of the surrounding building component. little to ensure condensation resistance, which can lead to mold SUBSTANTIATION: The use of a 1 percent exemption may growth and occupant health problems, or maintain reliable provide considerably more surface area than needed to address the thermal performance. compression factors in typical units. A 40-sq ft upper limit appears COMMITTEE ACTION: Accept. reasonable. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 COMMITTEE ACTION: Accept. VOTE ON COMMITTEE ACTION: NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 AFFIRMATIVE: 11 VOTE ON COMMITrEE ACTION: NEGATIVE: 1 AFFIRMATIVE: 12 EXPLANATION OF NEGATIVE: HEIMAN: The use of storm windows, even though "sealed" is not an effective way of reducing heat loss, and providing comfort in the relatively close proximity of individuals to high radiant heat (Log #7) losses in cold climates. The technical advances in dual and triple Committee: MAN-MEC pane insulating window justify requiring this level of performance 501- 91 - (6-8.4 [$280.507(d)]): Accept in Principle m manufactured homes. SUBMITTER: John Andrews, Brookhaven Nat'l Laboratory RECOMMENDATION: Add text: "No credit shall be given for electric resistance furnaces or boilers." (Log #54) SUBSTANTIATION: Efficiency ratings of electric resistance Committee: MAN-MEC equipment can be quite high (close to 1.00) but nevertheless they 501- 89 - (6-8.1, 6-8.2, and 6-8.5 [3280.508(a), (b), and (e)]): are inefficient due to power plant losses and should not be Accept in Principle encouraged. SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) COMMITTEE ACTION: Accept in Principle. RECOMMENDATION: Revise Sections 6-8.1, .2 and .5 to read as Add an Appendix note A-6-8.4 to read as follows: follows: A-6-8.4 No credit is ~ven for electric resistance comfort heatin~ 6-8.1 gxge.m& 6-8.2 COMMITTEE STATEMENT: The proposed language is 6-8.5 Replace all references to the 1989 ASHRAE Handbook of informative rather than mandatory; therefore, it should be placed Fundamentals with the 199B ASHRAE Handbook of in Appendix A. The term "comfort heating systems" could indude Fundamentals. furnaces, boilers, and other equipment. In addition, revise Section 6-8.5 to read as follows: NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 6-8.5 U values for any glazing (e.g., windows, skylights, and the VOTE ON COMMITrEE ACTION: glazed portion of any door) shall be based on tested using AAMA AFFIRMATIVE: 12 15OB.1, Voluntary Test Method for Thermal Transmittance and Condensation Resistance of Windows, Doors, and Glazed Wall Sections. In the absence of tests, manufacturers shall me the residential window U values contained in Table -l-g5 in Chapter 27 (Log #144) of the !989 1993 ASHRAE Handbook of Fundamentals. In the Committee: MAN-MEG 501- 92 - (6-8.4 [3280.507(d)]): Reject event that the classification of the window type is indeterminate, SUBMITTER~ James A. Ranfone, American Gas Assn. the manufacturer shall use the classification that gives the higher U RECOMMENDATION: Revise text as follows: value. For the purpose of calculating Uo values, storm windows "6-8.4 High-Efficiency Heating and Gooling Equipment Credit... shall be treated as an additional pane. ...Heating efficiency increase factor = increase factor in heating SUBSTANTIATION: This recommended change was originally ipment efficiency measured by the Annual Fuel Utilization submitted to HUD by the MHCSS Consensus Committee on 12-29- ~q~ciency (AFUE) for a-as or oil fired equipment or by the Heating 94, but no action has been taken. The 1993 ASHRAE handbook of Seasonal Performance Factor (HSPF) for heat pumps, above that

356 NFPA 501 -- MAY 2000 ROP required by NAECA (indicated as "NAECA" in formula). The SUBSTANTIATION: Recognizing the national need for a formula is heating efficiency increase factor = AFUE (HSPF) home uniform, fair, accurate and credible nation rating system for -- AFUE (or HSPC) NAECA + AFUE (HSPF) NAECA..." window energy performance, with the appropriate procedures and SUBSTANTIATION: This addition clarifies the applicability of safeguards, the NFRC was formed in 1980 by a non profit coalition AFUE ratings specified by NAEGA, which are used for the that includes all types of fenestration manufacturers, builder and calculations in Section 6-8.4. These AFUE ratings are published in building industry professionals, testing and simulation the directory of the Gas Appliance Manufacturers Association laboratories, consumer groups, state energy and building code (gAMA). officials, and utilities. In 1992, Congress also recognized the COMMITTEE ACTION: Reject. importance of accurate window energy performance information COMMITTEE STATEMENT: The committee believes the and the need for a single, nationwide system Section 121 ofthe proposed language is not needed. Energy Policy Act specifically assigns responsibility to the NFRC to NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 establish a "voluntary national window rating system that will VOTE ON COMMITTEE ACTION: develop energy ratings and labels for windows and window AFFIRMATWE: 12 systems." Pursuant to this federal mandate, NFRG has established a comprehensive rating, certification and labeling program for the energy performance of fenestration products. The Department of (Log #168) Energy has already recognized the progress made by NFRC in this Committee: MAN-MEC arena [See "Energy Efficiency Rating, Certification and Labeling for 501- 93 - (6-8.4 [3280.507(d)]): Reject Windows and Window Systems," 59 Federal Register 48865 SUBMIT'rER: James A. Ranfone, American Gas Assn. (September 23, 1994).] As its first rating procedure, NFRG RECOMMENDATION: Add the following new text: developed and implemented a cost-effective, state-of-the-art testing 6-8.4 High-Efficiency Heating and Cooling Equipment Credit. and simulation method to determine whole product U-values. Exception: For heating and/or cooling annliauces not covered This method is set forth in NFRC 100: Procedure for Determining by NAECA. an analysis based on generally accented engineerin~ Fenestration Product U-factors. principles that shows national estimated manuai onerating cost Beyond the NFRC test and simulation procedure, the proposed (EAOC) ~avings relative to minimum efficiencv equipment cover~[ requirements also contain provisions to ensure that the procedure is properly applied. These include requirements that the bv NAECA can be used for calculating high-efficiency heating and procedure be performed by an accredited, independent laboratory cooling eauinment credits. In this case. the following enuation and that fenestration products be labeled and certified by the fl/~]J~.~.-~NAEGA - FAOCH o m ~FI O M E, manufacturer. These requirements are generally consistent with where all terms are ¢valuated ota the same enOneering basis as per those required by the NFRC Product Certification Program, which Section 8-$,6, incorporates a multi-step rating, certification and labelin~ process SUBSTANTIATION: While the current standard encourages the contmnmg a number of checks and balances to ensure fair, use of efficient heating and cooling equipment, there is the uniform and reliable results. In fact, NFRC issued its first implicit restriction that only equipment covered by NAECA is Certified Products Directory during the fall of 1995, containing encouraged. Not all such equipment is covered by NAECA or ratings for more than 2100 products. The most recent edition (the comparable energy conservation requirements. The proposed Seventh) contains over 38,000 rated products. language would allow the use of engineering analysis using By requiring NFRC ratings and labels as to the U value of ASHRAE techniques, bin analysis, detailed computer simulations, windows and other fenestration products labels containing the etc.., to quantify the benefits of these non-NA~CA covered relevant fenestration product performance data will permit code products relative to the NAECA covered alternatives. The NAECA officials, engineers, architects, specifiers and builders to easily test procedures already provide a mechanism for calculating the determine code compliance and to more accurately select national estimated annuai operating cost (EAOG), and thus can complementary heating, cooling and insulation products; be the common comparison for efficient equipment selections. consumers will be in a position to immediately compare the COMMITTEE ACTION: Reject. energy efficiency performance of various fenestration products; COMMITTEE STATEMENT: The proposed exception does not and moving to a single nationwide system will avoid duplicative relate to the subject of 6-8.4. testing and reduce cost (NFRC procedures are referenced in the NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 1998 Model Energy Code, several states require NFRG ratings and VOTE ON COMMITTEE ACTION: labeling in their building codes, certain utility programs, and the AFFIRMATIVE: 12 EPA/DOE Energy Star program use the NFRC ratings as their basis). COMMITTEE ACTION: Accept in Principle in Part. Revise 6-8.5 as follows: (Log #130) U values for any glazing (e.g., windows, skylights, and the glazed Committee: MAN-MEC ortions of any door) shall be based on tests using AAMA 15031, 501- 94 - (6-8.5 [3280.507(e)] ): Accept in Principle in Part oluntary Test Method for Thermal Transmittance and SUBMITTER: Susan Douglas, Nat'i Fenestration Rating Council, Condensation Resistance of Windows, Doors, and Glazed Wall Inc. Secdons or the National Fenestration Radngv Council 100 (1997 RECOMMENDATION: Revise text as follows: edition). Procedure for Determining Fenestratioll Product Thermal'Pronerties. --^-*:~ e ~.e .... A~.X .1~11 I*.- 1..~.^A --- ~--. .... :---- A AN,.il'A 1 [Nell In the absence of tests, manufacturers shall use the residential ...... / ...... window U values contained in Ta~!e I~ "n Chaptcr 27 ~f *..he 19~9 Glaapter 29. T~ble 5 of the 1997 ASHRAE Handbook of Scct:.~=;. U values for any ~lazing (e.g.. windows, skylights, and Fundamentals. In the event that the classification of the window the glazed portions of anv door) shall be determined in type is indeterminate, the manufacturer shall use the classification accordance with the National Fenestration Rating Council 100 at gives the higher U value. Where a composite of materials (1997 edition). Procedure for Determining Fenestration Product from two different product tvoes are used. the product shall be Thermal properties by an accredited, independent laboratory, and assigned the higher U value. -For the purpose of calculating U o labeled and certified bv the manufacturer. values, storm windows shall be treated as an additional pane." !: the abzcncc ~f tc:~, Where a manufacturer has not COMMITTEE STATEMENT: The submitter has provided no determined nroduct U value in accordance with NFRC 100 for a justification for precluding use of the AAMA standard currendy particular product line, manufacturers shall use the residential referenced. The modified proposal incorporates the NFRC window U values contained in TaS!c 1~ ".n Chapter 27 cf :.~.c IOEO standard as an alternative to the AAMA standard. Table 5 of the 1997 ASHRAE Handbook of Fundamentals. In the NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 event that the classification of the window type is indeterminate, VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 12 the manufacturer shall use the classification that gives the higher U value. Where a comnosite of materials from two different nroduct tvoes are used. the t~roduct shall be assigned the higher U value. l~or the purpose of-calculating U o values, storm windows shall be treated as an additional pane."

357 NFPA 501 -- MAY 2000 ROP

(Log #CP422) probably less than 5 percent understand what it means. Committee: MAN-MEC Meanwhile manufacturers spend hundreds of man hours 501- 95 - (6-9.3): Accept generating these numbers for DAPIA approval, and placing the SUBMITrER: Technical Committee on Mechanical for information on the Data Plate. IPIAs also spend many hours Manufactured Housing verifying that all these numbers are properly applied to the Data RECOMMENDATION: Revise 6-9.3 as follows: Plate. In other words, hundreds of man-hours ($$$) are literally 6-9.3 Insulation Compression. wasted each year fulfilling this requirement which serves no one! Insulation compressed to less than nominal thickness shall have Lastly, I believe the industry does a much better job today of its nominal R-values reduced for that area which is compressed in properly sizing the furnace than it did 25 years ago when this accordance with F;.gure Table 6-9.3. requirement was created. When insulation is installed over the framing members, the COMMITTEE ACTION: Accept. thermal performance of the insulation shall be reduced due to NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOJ'E: 12 compression at the framing members. The resistance value of the VOTE ON COMMITTEE ACTION: insulation between the framing members shall be reduced by 12.5 AFFIRMATIVE: 12 )ercent for framing members 16 in. (406 mm) on center, 8.5 )ercent for framing members 24 in. (610 mm) on center, and 4 ~ercent for framing members 48 in. (1220 mrn) on center. The R- ~lue for t0ose-fill insulation in slonin~ cavities shall be adiusted in (Log #55) accqrdance with Table 6-9.3. Committee: MAN-MEC 501- 99 - (6-11.1.1 [5280.511(a)(1) and (c)]): Accept in Principle Delete the existing Figure 6-9.3 and replace with new Table 6-9.3 SUBMITTER: Frank Walter, Manufactured Housing Inst. (Mill) shown on the following page (Table 3.2 from PNL 8006 document). RECOMMENDATION: Revise Section 6-11.1.1 to read as follows: SUBSTANTIATION: The proposed table provides more explicit 6-11.1.1 Alternative 1. ff a central air conditioner system is criteria for adjusting R-value due to compression. provided by the home manufacturer, the heat gain calculation COMMITTEE ACTION: Accept. necessary to properly size the air conditioning equipment shall be NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 in accordance with the procedures oudined in Chapter 22 of the VOTE ON COMMITTEE ACTION: !0~ 1993 ASHRAE Handbook of Fundamentals, with an assumed AFFIRMATIVE: 12 location and orientation. (See Figure 6-11.1.1.) SUBSTANTIATION: This recommended change was originally submitted to HUD by the MHCSS Consensus Committee on t2-29- (Log #112) 94, but no action has been taken. The 1993 ASHRAE Handbook Committee: MAN-MEC of Fundamentals is the current edition. The 1989 edition can not 501- 96 - (6-10.1 [3280.510(c)] ): Accept be purchased from ASHRAE at this time. SUBMITTER: Michael L. Zieman, RADCO COMMITTEE ACTION: Accept in Principle. I RECOMMENDATION: Delete the last sentence of the Heating Revise 6-11.1.1 as follows: • Certificate which begins as follows: 6-11.1.1 Alternative 1. ff a central air conditioner system is "To maximize furnace operating economy..." provided by the home manufacturer, the heat gain calculation SUBSTANTIATION: This is a companion proposal which goes necessary to properly size the air conditioning equipment shall be with a separate proposal I have made to delete 6-10.4. Please refer in accordance wath the procedures oudined in Chapter -2-g27ofthe to the Substantiation for the companion Proposal 501-98 (Log !0~°9 1997 ASHRAE Handbook of Fundamentals, with an assumed #114). location and orientation. (See Figure 6-11.1.1.) COMMITTEE ACTION: Accept. COMMITI'EE STATEMENT: The committee action updates the NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 reference to the most current edition of the ASHRAE Handbook VOTE ON COMMITTEE ACTION: of Fundamentals. AFFIRMATIVE: 12 NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 12

(Log #113) Committee: MAN-MEC 501- 97- (6-10.3 [3280.510(b)]): Accept (Log #177) SUBMITTER: Michael L. Zieman, RADCO Committee: MAN-MEC I RECOMMENDATION: Revise text as follows: 501- 100 - (6-11.1.1 [$280.511(a)(1)]): Accept in Principle "The heating certificate shall indicate the lowest outdoor SIYBMrrTER: Dick Veenstra, Fleetwood Enterprises temperature at which the installed heating equipment will RECOMMENDATION: Revise text as follows: maintain a 70°F (21°C) temperature inside the home ;;':.~cut Alternatives: "ff...outlined in Chapter -2-2-26 of the 1989 ASHRAE Handbook..." "...Information concerning...are provided in Chapter ~26 of the 1989 edition of the ASHRAE Handbook of Fundamentals." SUBSTANTIATION: There is no requirement in the standard for SUBSTANTIATION: Chapter 22 is rifled "Thermal and Water storm sash, etc. in any particular thermal Zone. As a practical Vapor Transmission Data.' matter in order to achieve the overall Coefficient of Heat Chapter 26 is dried "Air Conditioning Load." Transmission (Uo) specified in 6-6.1.1 storm sash, etc. windows COMMITTEE ACTION: Accept in Principle. are often used in Zone I, not just Zones II or IIL The wording to See Committee Action on Proposal 501-99 (Log #55). be deleted confuses the issue and serves no useful purpose. COMMITTEE STATEMENT: The Committee Action on Proposal COMMITTEE ACTION: Accept. 501-99 (Log #55) should meet the submitter's intent. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 VOTE ON COMMITTEE ACTION: VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 12 AFFIRMATIVE: 12

(Log #114) Committee: MAN-MEC 501- 98 - (6-10.4 [3280.510(c)] ): Accept SUBMITTER: Michael L. Zieman, RADCO [ RECOMMENDATION: Delete the entire section. SUBSTANTIATION: Twenty-five years ago this sectional was intended as consumer information and placed in the form of a "recommendation". In my opinion less than 1 percent of consumers ever read this before they buy the home. (After they buy the home it obviously does no good.) Of those that do read it

358 NFPA 501 -- MAY 2000 ROP

Table 6-9.3 Effect of Insulation Compression and Restriction on R-value

Non-uniform (a) Uniform (b) Non-uniform Uniform % of Restriction Compressio % of Original Restriction Compression ° Original n Thickness Batt Blown Batt Thickness Batt Blown Batt

0% 20% 15% 0% 1% 26% 21% 1% 51% 81% 73% 62% 2% 32% 25% 2% 52% 81% 73% 63% 3% 36% 28% 4% 53% 82% 74% 64% 4% 38% 30% 5% 54% 82% 75% 65% 5% 41% 32% 7% 55% 83% 75% 65% 6% 43% 33% 8% 56% 83% 76% 66% 7% 45% 35% 10% 57% 84% 76% 67% 8% 46% 36% 11% 58% 84% 77% 68% 9% 48% .38% 13% 59% 84% 78% 69% 10% 49% 39% 14% 60% 85% 78% 70% 11% 51% 40% 15% 61% 85% 79% 71% t2% 52% 42% 17% 62% 86% 79% 72% 13% 53% 43% 18% 63% 86% 80% 73% 14% 54% 44% 20% 64% 87% 81% 74% 15% 55% 45% 21% 65% 87% 81% 74% 16% 57% 46% 22% 66% 88% 82% 75% 17% 58% 47% 24% 67% 88% 82% 76% 18% 59% 48% 25% 68% 88% 83% 77% 19% 59% 49% 26% 69% 89% 84% 78%

2O% 60% m 5O% 28% 70% 89% 84% 78% 21% 61% 51% 29% 71% 90% 85% 79% 22% 62% 52% 30% 72% 90% 85% 80% 23% 63% 52% 31% 73% 90% 86% 81% 24% 64% 53% 33% 74% 91% 86% 82% 25% 65% 54% 34% 75% 91% 87% 82% 26% 65% 55% 35% 76% 92% 87% 83% 27% 66% 56% 36% 77% 92% 88% 84% 28% 67% 57% 37% 78% 92% 89% 85% 29% 68% 57% 39% 79% 93% 89% 85% 3O% 68% 58% 40% 80% 93% 90% 86% 31% 69% 59% 41% 81% 93% 90% 87% 32% 70% 60% 42% 82% 94% 91% 88% 33% 70% 60 % 43% 83% 94% 91% 88% 34% 71% 61% 44% 84% 95% 92% 89% 35% 72% 62% 45% 85% 95% 92% 90% 36% 72% 63% 47% 86% 95% 93% 91% 37% 73% 63% 48% 87% 96% 93% 91% 38% 74% 64% 49% 88% 96% 94% 92% 39% 74% 65% 50% 89% 96% 94% 93% 40% 75% 65% 51% 90% 97% 95% 93% 41% 75% 66% .52% 91% 97% 95% 94% 42% 76% 67% 53% 92% 97% 96% 95% 43% 76% 68% 54% 93% 98% 96% 95% 44% 77% 68% 55% 94% 98% 97% 96% 45% 78% 69% 56% 95% • 98% 97% 97% 46% 78% 70% 57% 96% 99% 98% 97% 47% 79% 70% 58% 97% 99% 98% 98% 48% 79% 71% 59% 98% 99% 99% 99% 49% 80% 71% 60% 99% 100% 99% 99% 50% 80% 72% 61% 100% 100% 100% 100%

To use this table first compute the restricted insulation thickness as a fraction of the uncompressed (full) insulation thickness, then look up the R-value remaining from the approAariate column (Non-uniform Restriction Batt, Non- uniform Restriction Blown, or Uniform Compression Batt). Example: - Assume a section of loose-fill ceiling insulation went from R-25 insulation at a height of 10 inches to a minimum height of 2 inches at the edge of the ceiling. The ratio of minimum to full thickness is 0.20 (2 divided by 10). Look up 0.20 (20%) and read across to column 3 (Non-uniform Restriction, Blown) and read 50%. Therefore, the R-value of the loose-fill insulation over the restricted area would be R-12.5 (50% of 25). (a) Non-uniform restriction is that which occurs between non-parallel planes, such as in the ceiling near the eaves. (b) Uniform compression is compression between parallel planes such as that which occurs in a wall.

359 NFPA 501 ~ MAY 2000 ROP

(Log #56) VOTE ON COMMITTEE ACTION: Committee: MAN-MEC AFFIRMATIVE: 12 501- 101 - (6-11.1.1 and 6-11.1.2 [~280.511(a)(1) and (2)]): Accept in Principle TCC NOTE: The Technical Correlating Committee on Manufactured Housing (MAN-AAC) directs that a public (Log #57) comment be submitted in the Correlating Committee's name Committee: MAN-MEC requesting that the Technical Committee on Mechanical for 501- 102- (Figure 6-11.1.2 [3280.511(a)(2)]): Accept in Principle Manufactured Housing (MAN-MEC) review paragraph 6- I 1.1.1 SUBMITTER: Frank Walter, Manufactured Homing Inst. (MHI) and 6-11.1.2 as it relates to the term "humid climate region." The RECOMMENDATION: Revise Figure 6-11.1.2 (3rd paragraph) to Technical Correlating Committee noticed that in Proposal 501-84 read as follows: (Log #52) the term "fringe climate" is also used. Should the term "The supply air distribution system installed in this home is sized "fridge climate" be incorporated into 6-1 I. 1.1 and 6-11.1.2 where for manufactured home central air conditioning systems of up to . there is a reference to humid climates. Btu/hr rated capacity, which are certified in accordance with the SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) appropriate Air Conditioning and Refrigeration Institute RECOMMENDATION: Revise Sections 6-11.1.1 and6-11.1.2 to Standardg. XA~c:. when the air circulators of such air read as follows: conditioners are rated at 0.3 in. water column static pressure (75 6-11.1.1 Alternative 1. ffa central air conditioning system is Pa) or greater for the cooling air delivered to the manufactured provided by the home manufacturer, the heat gain calculation home supply air duct system." necessary to properly size the air conditioning equipment shall be in SUBSTANTIATION: This recommended change was originally accordance with procedures oudined in Chapter 22 of the 1989 submitted to HUD by the MHC,SS Consensus Committee on 12-26- ASHRAE Handbook of Fundamentals, with an assumed location and 90, but no action has been taken. This 3rd paragraph of Figure 6- orientation. (See Figure 6-11.1.1) The manufacturer shall nrovide 11.1.2 must have wording that is consistent with Section 8-15.1.3.2. the f0llgw~rlg statement when a home is built with a vapor retarder of The word "system" is made plural and the period following not ~reater than 1 nerm (drv cud method) on the exterior side of the Standards is changed to a comma for clarity. insulation. "This t{ome shall be sited in the humid climate reeion, as COMMITTEE ACTION: Accept in Principle. shown in the accomnanvin~ Figure 6-4.2.5 (which must be shown on Revise Figure 6-11.1.2 ($rd paragraph) as follows: the certificateL" "The supply air distribu~on system installed in this home is sized for manufactured home central air conditioning systerr~ of up to 6-11.1.2 Alternative 2. For each home suitable for a central air cooling system, the manufacturer shall provide the following Btu/hr ratc~ zapaz~', :v.h.lch a=c ccr"~.cd ":, acz~r~'~cc ~;~.~h "~.c statement: "The air distribution system of this home is suitable for PP ~v ...... ~, ...... t, ...... the installation of a central air conditioning system." (See Figure St~.'z~=.-a~:. ~.A,.m.c=~= This is based on air circulators of such air 6-11.1.2) The manufacturer shall provide the following statement conditioners a~e rated at 0.3 in. water column static pressure (75 when a home is built with a vanor retarder of not ~reater than 1 Pa) or greater for the cooling air delivered to the manufactured home supply air duct system." oerm (drv CUD method) on the exterior side of the insulation. COMMr['I'EE STATEMENT: The committee actions on the ~'This home shall be sited in the humid climate region, as shown are intended for editorial clar cation. irl Oe accompanying Figure 6-4.2.5 (which must be shown on the ER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 certificateL" VOTE ON COMMITTEE ACTION: SUBSTANTIATION: This recommended change was originally AFFIRMATIVE: 12 submitted to HUD by the MHCSS Consensus Committee on 12-29- 92, but no action has been taken. Figure 6-4.2.5, from the 1989 ASHRAE Handbook of Fundamentals, is referenced in the proposed change to add a new Section 64.2.5 to cover humid (Log #60) climates in the country. This change to Sections 6-11.1.1 and 6- Committee: MAN-PLU 11.1.2 is a companion change to that of Section 6-4.2.5. 501- 103 - (7-2 Anti-Siphon Trap Vent Device [3280.602] ): Reject The map (Figure 6-4.2.5) is consistent with the 1989 AHSRAE TCC NOTE: The Technical Correlating Committee on Handbook of Fundamentals, Chapter 21. This map was selected Manufactured Housing (MAN-AAC) directs that a public to dearly illustrate the humid climate regions of the country. The comment be submitted in the Correlating Committee's name certificates are proposed to be consistent with the proposed permitting the Technical Committee on PlumbinG for change to new Section 6-4.2.5. Manufactured Housing (MAN-PLU) an opportumty to review this COMMITTEE ACTION: Accept in Principle. proposal in respect to the related Technical Correlating Revise 6-11.1.1 and 6-11.1.2 as follows: Committee comment being submitted on Proposal 501-122 (Log 6-11.1.1 Alternative 1. ff a central air conditioning system is #74). It is the understanding that additional substantiation will be provided by the home manufacturer, the heat gain calculation forwarded to the Technical Committee for their review. necessary to properly size the air conditioning equipment shall be SUBMITTER= Frank Walter, Manufactured Housing Inst. (MHI) in accordance with procedures outlined in Chapter 22 of the 1989 RECOMMENDATION: Revise the definition of "anti-siphon trap ASHRAE Handbook of Fundamentals, with an assumed location vent device" in Section 7-2 to read as follows: and orientation. (See Figure 6-11.1.1) The manufacturer shall ?~ S!ph~.q Mechanical Trap Vent Device. A device that provide the following statement on the heating and coolin¢ automatically opens to admit air to a fixture drain above the certificate when a home is built with a vaoor retarder of not treater connection of the trap arm so as to prevent siphonage and closes than 1 Derm /drv cut) method) on the exterior side of the tightly when the pressure within the drainage system is equal to or insulation: "This home is designed to be sited in the humid greater than aunospheric pressure so as to prevent the escape of climate re,on, as shown." Figure 6-4.2.1 shall be shown on the gases from the drainage system into the manufactured home. SUBSTANTIATION: This recommended change was originally certificate. submitted to HUD by the MH~ Consensus Committee on 2-28- 6-11.1.2 Alternative 2. For each home suitable for a central air 96, but no action has been taken. The change in the definition is cooling system, the manufacturer shall provide the following intended to clarify the difference between an anti-siphon trap vent statement: "The air distribution system of this home is suitable for device and an air admittance valve. An anti-siphon trap device is the installation of a central air conditioning system." (See Figure spring activated whereas the air admittance valve works by gravity 6-11.1.2) The manufacturer shall provide the following statement without the use of a spring. on the heating and cooling ~erfificat¢ when a home is built with a COMMITTEE ACTION: Reject. vapor retarder of not greater than 1 nerm (dry cun method) on the COMMITTEE STATEMENT: The committee has a concern with exterior side of the insulation: "This home is designed ~9 be sited changing this definition which has been in use for many years and in the humid climate region, as shown." Fitmre 6-4.~.1 shall be is widely used. The committee is open to adding new definitions shown on the certificate. covering other types of mechanical vent devices, however, no COMMITTEE STATEMENT: The committee actions on the definitions have been proposed. proposal are intended for editorial clarification. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6 NUMBER OF COMMrVrEE MEMBERS ELIGIBLE TO VOTE: 12 VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 5 NOT RETURNED: 1 Carroll

360 NFPA 501 -- MAY 2000 ROP

COMMENT ON AFFIRMATIVE: NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6 LEWIS: I do not perceive a problem with permitting air VOTE ON COMMITTEE ACTION: admittance valves in manufactured homes and rewriting the AFFIRMATIVE: 5 plumbing section of NFPA 501 to accommodate those devices. NOT RETURNED: 1 Carroll However, the Plumbing Committee was correct in their action COMMENT ON AFFIRMATIVE: since they lacked the necessary information from the LEWIS: See my Comment on Affirmative Ballot on Proposal 501- manufacturers of air admittance valves to make educated decisions 103 (Log #60). regarding the new materials and terminology contained in these proposals. Engineering specifications and tesdng was provided to the original MHI Consensus Committee but not forwarded with the proposal to the NFPA 501 Committee. NFPA should contact (Log #16) the manufacturer(s) of air admittance valves and invite them to Committee: MAN-PLU comment on these proposals and encourage them to attend the 501- 106 - (7-3.2.4 [3280.603(b) (4) ] ): Reject next meeting of the committee to address these issues in person. SUBMrrrER: Kurt Pugh, State of Oregon RECOMMENDATION: Delete this requirement in its entirety. (Heat Tape Receptacle). SUBSTANTIATION: With today's insulation requirements, there (Log #59) is not a need for this. Committee: MAN-PLU COMMITTEE ACTION: Reject. 501- 104 - (%2 Main Vent [3280.6021): Reject COMMITTEE STATEMENT: The submitter provided no TCC NOTE: The Technical Correlating Committee on justification for the elimination of the heat tape receptacle. The Manufactured Housing (MAN-AAC) directs that a public insulation of manufactured housing is designed for the enclosed comment be submitted in the Correlating Committee's name space, not externai piping. permitting the Technical Committee on Plumbin~ for NUMBER OF COMMI'Iq'EE MEMBERS ELIGIBLE TO VOTE: 6 Manufacturdd Housing (MAN-PLU) an opportumty to review this VOTE ON COMMITTEE ACTION: proposal in respect to the related Technical Correlating AFFIRMATIVE: 6 Committee comment bein~ submitted on Proposal 501-122 (Log #74). It is the understanding that additional substantiation will be forwarded to the Technical Committee for their review. SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) (Log #61) RECOMMENDATION: Delete without substitution the definition Committee: MAN-PLU of ~Main Vent" in Section 7-2: 501- 107- (7-$.2.4 [3280.603(b)(4)] ): Accept in Part ...... v ...... v-- v-rtcr7 cf ~e vcnnng z)~tem to. ".':h'ch TCC NOTE: The Technical Correlating Committee on vent hr^.-nchcz can hc connected. Manufactured Housing (MAN-AAC) directs that a public SUBSTANTIATION: This recommended change was originally comment be submitted in the Correlating Committee's name submitted to HUD by the MHC~S Consensus Committee on 2-28- requesting that Paragraph 7-3.2.4 (c) should be shown to include 96, but no action has been taken. The proposed revision to the revisions that where done for the 1999 edition which Section 7-11.$.1 eliminates the need for this definition. incorporated a clarification of terms that are used to describe this COMMITTEE ACTION: Reject. device. COMMITTEE STATEMENT: The committee believes that the SUBMITI'ER: Frank Waiter, Manufactured Housing Inst. (MHI) definition is needed as the term is retained in the standard by RECOMMENDATION: Revise Section %3.2.4 to read as follows: action on Proposal 501-122 (Log #74). 7-3.2.4 Freezing. All piping and fixtures subject to freezing NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6 temperatures shall be insulated or protected to prevent freezing VOTE ON COMMITTEE ACTION: under normal occupancy. The manufacturer shall provide the AFFIRMATIVE: 5 following: NOT RETURNED: 1 Carroll (a) Written installation instructions for the method(s) required COMMENT ON AFFIRMATIVE: for compliance to this section LEWIS: See my Comment on Affirmative Ballot on Proposal 501- (b) A statement in theirs installation instructions stating that if 103 (Log #60). i...... oiue heatin~ ¢~ble is used, it shall be listed for use with the manufactured homes (c) A receptacle outlet for the use of a heat ~F: pipe heating cable located on the underside of the manufactured home, within (Log #58) Committee: MAN-PLU 2 ft (610 mm) of the water supply inlet. The receptacle outlet 501- 105- (7-2 Vent System [3280.602] ): Reject provided shall not be placed on a branch circuit that is protected TCC NOTE: The Technical Correlating Committee on by a ground-fault circuit- interrupter. Manufactured Housing (MAN-AAC) directs that a public SUBSTANTIATION: This recommended change was originally comment be submitted in the Correlating Committee's name submitted to HUD by the MHCSS Consensus Committee on 2-28- permitting the Technical Committee on Plumbing for 96, but no action has been taken. The current HUD Code Manufactured Housing (MAN-PLU) an opportumty to review this references UL Subject 1462, Outline of Investigation for proposal in respect to the related Technical Correlating Residential Pipe Heating Cable, which refers to mobile homes only. NFPA 501 Standard does not reference this document but Committee comment being submitted on Proposal 501-122 (Log the same problem still exists. Section 1-1states that the 501 #74). It is the understandingthat additional substantiation wilibe forwarded to the Technical Committee for their review. Standard covers manufactured homes designed to be used as dwelling units. Section 1-2 states that "Manufactured home" is SUBMITTER: Frank Waiter, Manufactured Housing Inst. (MHI) defined as a structure transportable in one or more sections, RECOMMENDATION: Revise the definition of vent system in Section 7-2 to read as follows: ...designed to be used as a residential dwelling with or without a Vent System. Tha t p-~--~~.f a p'¥'ng !:-.z'.z1!r.'dcnthat prc.;'~-.cz permanent foundation. This change would not restrict the use of pipe heating cable to only mobile homes; thus, installation would c!rcula'dc= ~f r_2r :--Uh'n a d.-ainagc ~tcm. Piping inst~lled to be suitable for manufactured homes. eaualize nneumatic nressure in a drainage system to orevent tran COMMITTEE ACTION: Accept in Part. .scai loss or blow-back due to siohona~e-or back pressure. 1. Revise (b) to read: SUBSTANTIATION: This recommended change was originally (b) A statement in the installation instructions stating that if heat submitted to HUD by the MHC,SS Consensus Committee on 12-26- tape Or pipe heatin~ cable is used, it shall be listed for use with the 90, but no action has been taken. The proposed definition has manufactured homes. been taken from the 1989 CABO One- and Two-Family Dwelling 2. Refer the proposed revisions to (c) to the Electrical Code, Section P-2016 (definitions). It provides a more technical Committee for acuon. definition. COMMITTEE STATEMENT: Paragraph (b) is revised by adding COMMITTEE ACTION: Reject. "pipe heating cable," rather than deleting it. This ensures that any COMMITTEE STATEMENT: The definition as currently stated such product will be listed. describes a venting system as it is used in the standard. The The Piping Committee believes that (c) should be considered by proposed definition appears to add a new concept, which is the Electrical Committee for inclusion in Chapter 9. currently not in the body of the standard. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6

361 NFPA 501 -- MAY 2000 ROP

VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 6 -o~.~g!e fiz:ture for the ~u."Fc.-.~z cf ~--:.agc -~---z~vent requ]r=mcn:z. UD to three compartment sinks, lanndrv tubs or lavatories shall be oermitted to be considered to be one fixture for the nurnose of (Log #62) drainage and vent reuuirements if connected to a single tran as Committee: MAN-PLU lon~ as fixtures are immediately adjacent to each other and in the 501- 108- (Table 7-4.1 [3280.604(a)]): Reject same room. their waste outlets are not more than 30 in. (760 mml TCC NOTE: The Technical Correlating Committee on Manufactured Housing (MAN-AAC) directs that a public apart, and the trap is centrally located. comment be submitted in the Correlating Committee's name SUBSTANTIATION: This recommended change was originally permitting the Technical Committee on Plumbing for submitted to HUD by the MHCSS Consensus Committee on 12-26- Manufactured Housing (MAN-PLU) an opportunity to review this 90, but no action has been taken. The 1989 CABO One- and Two- proposal in respect to the related Technical Correlating Family Dwelling Code allows three fixtures rather than two in a Committee comment bein[g submitted on Proposal 501-122 (Log combination fixture under conditions similar to those in the NFPA #74). It is the understanding that additional substantiation will be 501 Standard. forwarded to the Technical Committee for their review. COMMITTEE ACTION: Accept in Principle. SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) Revise %6.2 to read: RECOMMENDATION: Add a new Standard to Table 7-4.1 to 7-6.1.2 Combination Fixtures. A two- or three-compartment read as follows: sink, up to three single sinks, or up to three lavatories; with waste Table 7-4.1 Minimum Standards, Miscellaneous outlets not more than 30 in. (760 mm) apart, in the same room, Performance Reauirements for Air and flood level rims at the same level, shall be permitted to be Admittance Valves for Plumbin~ Drainage connected to one "P" trap and considered as a single focture for the purposes of drainage and vent requirements. Sy~nls. Fixture and Branch Devices COMMITTEE STATEMENT: The proposal is accepted vAth ANSI/ASSE 1051-91 with 1992 Revisions editorial revisions for clarity. SUBSTANTIATION: This recommended change was originally NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6 submitted to HUD by the MHCSS Consensus Committee on 2-28- VOTE ON COMMITTEE ACTION: 96, but no action has been taken. The proposed standard AFFIRMATIVE: 6 regulates air admittance valves. This standard is a consensus standard developed by ASSE. The standard regulates the materials requirements as well as the performance requirements for air (Log #65) admittance valves. The standard lists numerous performance tests Committee: MAN-PLU that an air admittance valve must pass to be considered acceptable. 501- 111 - (%6.1.S [$280.606(a)(3)]): Reject Additionally, the valves are cycled 500,000 and then tested for SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) performance as if they were a new device. By referencing the RECOMMENDATION: Revise Section %6.1.3 to read as follows: standard, the plumbing requirements of this standard do not have 7-6.1.3 Prohibited Traps. A trap which depends for its seal on to specify any detail construction requirements like those specified concealed interior partitions shall not be used. Full "S" traps for anti-siphon trap vent devices. (exceDt as nermitted bv 7-6.1.10L bell traps, drum traps, crown- COMMITTEE ACTION: Reject. vented traps, and running traps shall not be permitted. Fixtures COMMITTEE STATEMENT: There is no reference in NFPA 501 shall not be double-trapped. to the devices covered in the proposed standard. Therefore it is SUBSTANTIATION: This recommended change was originally not needed. submitted to HUD by the MHCSS Consensus Committee on 12-26- NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6 90, but no action has been taken. The 1989 CABO One- and Two- VOTE ON COMMITTEE ACTION: Family Dwelling Code conditionally accepts "S" traps in P-2206.7.3. AFFIRMATIVE: 5 See companion change to 7-6.1.10. NOT RETURNED: 1 Carroll COMMITTEE ACTION: Reject. COMMENT ON AFFIRMATIVE: COMMITTEE STATEMENT: The change is rejected as the LEWIS: See my Comment on Affirmative Ballot on Proposal 501- proposed new 7-6.1.10 is rejected in Proposal 501-113 (Log #67). 103 (Log #60). NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6 VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 6 (Log #63) Committee: MAN-PLU 501- 109- (Table 7-4.1 [3280.604(b)] ): Reject SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) (Log #66) RECOMMENDATION: Add a new standard to Table 7-4.1 to read Committee: MAN-PLU as follows: 501- 112 - (7-6.1.9.2 [3280.606(a) (9) (ii)]): Reject Table 7-4.1 Minimum Standards SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) Plastic Pipe and Fittings RECOMMENDATION: Revise Section 7-6.1.9.2 to read as follows: Crosslinked Polvethvlene (PEX/ Plastic Hot and 7-6.1.9.2 Trap Arm Offset. The piping between a "P" trap and the Cold Water Distribution Systems ASTM 17877-1993 vent shall be permitted to change in direction or be offset SUBSTANTIATION: This recommended change was originally horizontally ...... 1...... submitted to HUD By the MHCSS Consensus Committee on 12-29- change iz d'recfion, with a maximum ofg0 degrees...... by any~..... one 92, but no action ahs been taken. This change permits the use of fitting. polyethylene hot and cold water plastic piping that is suitable for SUBSTANTIATION: This recommended change was originally water distribution systems in manufactured housing. submitted to HUD by the MHCSS Consensus Committee on 12-26- COMMITTEE ACTION: Reject. 90, but no action has been taken. The 1989 CABO One- and Two- COMMITTEE STATEMENT: The current edition of NFPA 501 Family Dwelling Code does not limit the total change in direction already references this standard. of a trap arm. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6 COMMITTEE ACTION: Reject. VOTE ON COMMITTEE ACTION: COMMITTEE STATEMENT: The proposal would allow an AFFIRMATIVE: 6 unlimited number of horizontal fittings in the trap arm. No substantiation isprovided to justify this significant change. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6 (Log #64) VOTE ON COMMITTEE ACTION: Committee: MAN-PLU AFFIRMATIVE: 6 501- 110- (%6.1.2 [3280.606(a)(2)]): Accept in Principle SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) RECOMMENDATION: Revise Section 7-6.1.2 to read as follows: %6.1.2 Du~ Combination Fixtures. A v.'.'.~ c.~rz:..F=rt.~cn t -:~--

362 NFPA 501 m MAY 2000 ROP

(Log #67) Governing Committee Projects. The substantiation is not Committee: MAN-PLU sufficiently detailed for the committee to determine the intent of 501- 113 - (%6.1.10 (New) [3280.606(a)(10), New]): Reject the proposal. SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6 RECOMMENDATION: Add a new Section %6.1.10 to read as VOTE ON COMMITTEE ACTION: follows: AFFIRMATIVE: 6 7-6.1.10 Vertical Leg for Waste Fixture Drains. A vertical le~ (see Figure 7-6.1.10~ shall be nermitted to be installed in the tran arm of-a waste-fixture drain in lieu of the usual trao arm-to-vent connection. TYpical installations include island sinks and fixtures (Log #68) not adjacent to a wall. Vertical leg tran arm installations shall Committee: MAN-PLU 501- 115 - (%7.1.3 [3280.607(a)(3)1): Accept meet the following criteria. SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) RECOMMENDATION: Revise Section 7-7.1.3 to read as follows: BD~D DIAI~E~ 7-7.1.3 Fixture Connections. Fixture tailpieces and continuous / S~ AS ~CTIOIq ! wastes in exposed or accessible locations shall be not less than No. 20 Brown and Sharpe gauge seamless drawn-brass tubing or other approved pipe or tubing material. Inaccessible fixture connections shall be constructed according to the requirements for drainage piping. Each fixture tailpiece, continuous waste, or waste and overflow shall be not less than 1-1/2 in. (40 ram) for sinks of two or more compartments, dishwashers, clothes washing machines, laundry tubs, :=:d bath tubs, and showers: and not less than 1-1/4 in. (32 mm) for lavatories and single-compartment sinks having a 2-in. (50-ram) maximum drain opening. SUBSTANTIATION: This recommended change was originally submitted to HUD by the MHCSS Consensus Committee on 12-26- 90, but no action has been taken. The current 501 Standard omits showers from the list of plumbing fixtures permitted to be connected to waste lines at least 1-1/2 inches in diameter. Such an

r important plumbing fixture should be included for completeness. "COMMITTEE ACTION: Accept. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6 VOTE ON COMMITTEE ACTION: ~U~ AS SECI"~OX ¢ AFFIRMATIVE: 6

Figure %6.1.10 Vertical leg for waste fixture draJIl~, (Log #69) Committee: MAN-PLU 7-6.1.10.1 Minimum tran diameter shall be 1-1/4 in. (3~ mill), 501- 116 - (7-7.2.5.2 [S28O.607(b)(5)(ii)]): Reject %6.1.10.2 The diameter-of Section A shall be euual to the TCC NOTE: The Technical Correlating Committee on diameter of the tran. Manufactured Housln[[ (MAN-AAC) directs that a public %6.11,10.3 The lenLrda of Section A shall be not less than 8 in. comment be submitted in the Correlating Committee's name ¢203 ram) and in accordance with Section 7-11.3.5. requesting that the Technical Committee on Plumbing for 7-6,1,19A The diameter of Section B shall be one nine size larger Manufactured Housing (MAN-PLU) review the Committee Statement and provide greater clarification as to why they oppose than the diameter of Section A. the 48 inch provision. It is noted that the 1998 ICC One- and 7-6.1.10.5 The length of Section B shall be not more than 36 in. Two-Family Code permits this type of installation. (914 mm). SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) 7-6.1.10.6 The diameter of Section C shall be one oioe size larger RECOMMENDATION: Revise Section 7-7.2.5.2 to read as follows: than the diameter of Section B. 7-7.2.5.2 Standpipes shall be either 1-1/2 in. (40 nun) minimum 7-6.1.10.7 There is no restriction on the length of Section C. nominal iron pipe size, 1-1/2 in. (40 mm) diameter nominal brass 7-6.1.10.8 Bends shall be the diameter of the largest connected tubing not less than No. 20 Brown and Sharpe gauge, or 1-1/2 in. section. (40 mm) approved plastic materials. Receptors shall discharge into a vented trap or shall be connected to a laundry tub tailpiece SUBSTANTIATION: This recommended change was originally by means of an approved or listed directional fitting. Each submitted to HUD by the MHCSS Consensus Committee on 12-26- standpipe shall extend not less than 18 in. (457 mm) or more than 90, but no action has been taken. The 1989 CABO One- and Two- ~0 "=. (752 mr..) 48 in. (1219 mm~ above its trap and shall Family Dwelling Code permits vertical legs for waste vent fixture drains in Section P-2206.7.3 as suggested by this change. terminate in an accessible location no lower than the top of the COMMITTEE ACTION: Reject. clothes washing machine. A removable, tight-fitting cap or plug COMMITTEE STATEMENT: The proposal would permit the use shall be installed on the standpipe when a clothes washing of S-traps, which have been shown to siphon. No susbtantiation is machine is not provided. provided to support this change. SUBSTANTIATION: This recommended change was originally NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6 submitted to HUD b)~ the MHCSS Consensus Committee on 12-26- VOTE ON COMMITTEE ACTION: 90, but no action has been taken. The 1989 CABO One- and Two- AFFIRMATIVE: 6 Family Dwelling Code, Section P-2206.6.6(4), allows the washing machine standpipe to be a maximum of 48 inches above the crown weir. COMMITTEE ACTION: Reject. (Log #14) COMMITTEE STATEMENT: No substantiation is provided to Committee: MAN-PLU assure the committee that washing machines will operate properly 501-114- (7-7.1.3 [3280.609(a)(3)]): Reject with these proposed elevated standpipes. SUBMITTER: Kurt Pugh, State of Oregon NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6 RECOMMENDATION: Revise text of 7-7.1.3 "Fixture VOTE ON COMMITTEE ACTION: connections." AFFIRMATIVE: 6 SUBSTANTIATION: Clarify if accessible fixture tail pieces are allowed to have directional fittings (clean-out purposes). COMMITTEE ACTION: Reject. COMMITTEE STATEMENT: The proposal does not contain a specific recommendation as required by the NFPA Regulations

363 NFPA 501 m MAY 2000 ROP

(Log #70) SUBSTANTIATION: A means of controlling increased pressure Committee: MAN-PLU caused by thermal expansion is necessary to eliminate the failure 501- 117- (7-7.4 (New) [3280.607(d), New] ): Accept in Principle and unnecessary leaking of pipes and fittings in manufactured TCC NOTE: The Technical Correlating Committee on home plumbing systems. As the water in a water heater rises in Manufactured Housing (MAN-AAC) directs that a public temperature, it will expand in volume. In a typical water comment be submitted in the Correlating Committee's name distribution system, the water will expand into the water service requesting that the Technical Committee on Plumbing for and into the public water main or well compression tank, Manufactured Housing (MAN-PLU) provide clarification on "how assuming the water in not withdrawn t~om the system at an outlet these proposed sections are being added to the document. Is it or connection. This allows the heated water to expand into the the intent that these paragraphs be included as new paragraphs water service preventing a pressure increase in the piping system. and the current paragraphs be renumbered or is this text to be If the expansion of water is not accommodated in the piping added to the current text of the paragraphs without renumberin~? system, dangerously high pressure can develop and cause damage SUBMITTER: Frank Walter, Manufactured [-lousing Inst. (MH~ to piping, components and the water heater. RECOMMENDATION: Add a new Section 7-7.4 to read as In a measure to protect the public water supply from follows: contamination, municipalities and water purveyors are requiring 7-7.4 Water Conservation. check valves or backflow prevention devices at each water meter. 7-7.4.1 All water closets shall comolv with ASME Al12.19.2M-1995 In plumbing systems where pressure reducing valves, check valves and ASME Al12.19.6-1995 and shall be low consumotion closets in and backflow prevention devices are installed on the water supply accordance with Section 5.1.5.3 of ASME A112.19.21¢1-1995. upstream of the water heater, the heated water will be prevented 7-7.4.2 All lavatory faucets, bathtub faucets, shower heact~ ~rld from expanding into the supply main. As a result, the home's water system pressure will increase dramatically. A water heater sink faucets shall comply with ASME A112,18.1M-1996. pressure relief valve will open and discharge at 125-150 lb per sq SUBSTANTIATION: This recommended change was originally in. (psi) depending on the relief valve used. This means the entire submitted to HUD by the MHCSS Consensus Committee on 12-26- water distribution system will be exposed to these higher than 90, but nom action has been taken. Requiring the use of low normal water pressures. The effect causes excessive stress in all consumption water closets and restricted flow faucets and shower systems components and increases the likelihood of leaks and heads will conserve water and help assure continued availability of other failures. Continuous relief valve operation can shorten the adequate water supplies. Also, wastewater flows will be reduced. life of the relief valve and create a hazard of failure. Relief valves The new language proposed in Section 7-7.4.1 above include are not designed to act as an operating control device. Proper design and hydraulic requirements for low consumption (1.6 thermal expansion control devices should be used to protect the gallons per flush) water closets, which are being marketed plumbing systems from damage. throughout the country at this time. Preliminary results are for the Though thermal expansion controls are required by most model most part favorable for hydraulic performance tests on codes, local jurisdictions can not require them on manufactured representative models, sponsored by HUD, at the request of MHI. homes due to the federal preemption. The only way to protect The new language proposed for Section 7-7.4.2 above recognizes consumers from failing water systems is by amending NFPA 501- the update of reference standard ASME Al12.18.1M to the 1996 1997 (Federal Manufactured Home Construction and Safe~ edition and clarifies that faucets and shower heads shall meet the Standards) to require thermal expansion control devices be updated requirements (including a maximum flow rate of 3.0 installed at the factory as part of the approved water system. gallons per minute for lavatory and sink faucets and shower COMMITTEE ACTION: Reject. heads). The MHCSS committee is aware of lower flow rate COMMITTEE STATEMENT: The proposal is not supported by proposals before the U.S. Congress (H.R. 843, February 6, 1991) the substantiation. Additional justification is needed to ands a variety of proposals under consideration by several states. It demonstrate the need for a new device. Separate storage tanks is also aware that some states have or are about to implement new only require a pressure relief valve. flow rate requirements. At this point, the MHC~%S committee NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6 believes that it is prudent to propose an existing private sector VOTE ON COMMITTEE ACTION: national standard, and update later as approprmte. AFFIRMATIVE: 4 COMMITTEE ACTION: Accept in Principle. NEGATIVE: 1 1. Add a new 7-7.2.2.3 to read as follows: NOT RETURNED: 1 Carroll 7-7.2.2.3 All water closets shall be low consumption (1.6 gpf) EXPLANATION OF NEGATIVE: closets. LEWIS: The committee's reason for rejection of this proposal is 2. Add a new 7-7.1.6 to read as follows: not acceptable and was inconsistent with the criteria used to judge 7-7.1.6 Water Conservation. All lavatory faucets, shower heads, all other proposals. Adequate substantiation was provided for this and sink faucets shall not exceed a flow of 2.5 gpm. proposal, far exceeding the detail or amount of information 3. Add Al12.19.6, Hydraulic Requirements for Water Closets and provided in the substantiations of those proposals found Urinals, to the Plumbing Fixtures section of Table 7-4.1. acceptable by the same committee. COMMITFEE STATEMENT: The concept of the proposal is The problem addressed in this proposal is simple physics: Water accepted. The new text is added to existing sections rather than to pressure in water supply systems can exceed the capacity of the a new section so that it will not be overlooked. Reference pipes and fittings resulting in pipe and fitting failures. As pointed standards are retained in Table 7-4.1. out in the original substantiation and justification, there is an ever NUMBER OF COMMIaWEE MEMBERS ELIGIBLE TO VOTE: 6 increasing potential for excessive pressure in the water system and VOTE ON COMMITTEE ACTION: no way to relieve it before causing permanent damage to the AFFIRMATIVE: 6 manufactured home. The solution being proposed is to put a device (designed for intermittent operation for thermal expansion control) in the water supply system to relieve the excess pressure. This could consist of a simple relief valve installed inside the toilet (Log #10) tank or the installation of a small expansion tank at the water Committee: MAN-PLU heater. The added cost of either device is miniscule compared to 501- 118 - (7-9.3.1.3 and 7-9.3.1.4 [3280.609(c)(1)(iv) and (v)]): the cost of the service calls made by the manufacturer. If no ~Bect action is taken, the problem will continue to grow, causing more MITTER: Patrick Lewis, State of Oregon failures in the water supply systems of manufactured homes. RECOMMENDATION: Add new text to read: I believe the committee has a responsibility to act on known 7-9.3.1.3 In addition to the reouired nressure or combination health and safety hazards affecting the general public. I also Dressure and temnerature relief ~alve. an aonroved, listed believe the industry would prefer to spend a few dollars on a safety exoansion tank or other device designed for intermittent oneration device rather than hundreds on service problems that will never go for thermal exnansion control shall be installed. The tank device away. shall be sized in accordance with the manufacturer's recomI~¢ndation, 7-9.3.1.4 Any water heating device connected to a separate storaee tank and having valves between said heater and ta~k shall be nrovided with an approved combination temperature and oressure relief valve.

364 NFPA 501 -- MAY 2000 ROP

(Log #71) NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: Committee: MAN-PLU VOTE ON COMMITTEE ACTION: 501- 119- (%10.2.1 [3280.610(b)(1)]): Accept in Principle AFFIRMATIVE: 6 SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) RECOMMENDATION: Revise Section 7-10.2.1 to read as follows: 7-10.2.1 Pipe. Drainage piping shall be ew.=zdzr-a :;'eight galvanized steel; brass; copper; tube DWV; listed Scheduled 40 (Log #74) ABS plastic; listed Scheduled 40 PVC plastic; cast iron; or other Committee: MAN-PLU listed materials or approved materials. 501- 122 - (7-11.3.1 [3280.611(c)(1)]): Reject SUBSTANTIATION: This recommended change was originally TCC NOTE: The Technical Correlating Committee on submitted to HUD by the MHCSS Consensus Committee on 2-28- Manufactured Housing (MAN-AAC) directs that a public 96, but no action has been taken. This change updates the comment be submitted in the Correlating Committee's name material requirements for steel piping. Steel pipe must be permitting the Technical Committee on Plumbing for galvanized steel pipe to be considered acceptable for drainage and Manufactured Housing (MAN-PLU) an opportumty to review vent piping. Furthermore, the ASTM Standard lists standard additional substantiation that should be forthcoming on the weight steelJ0ipe. application of air admittance valves. It is the understanding of the COMMITTEE ACTION: Accept in Principle. Technical CorrelatingCommittee that additional information will Revise 7-10.2.1 to read as follows: be forwarded to the Technical Committee. The Technical 7-10.2.1 Pipe. Drainage piping shall be standard weight Committee is also requested to review the primary and secondary galvanized steel, brass, copper tube DWV, listed Scheduled 40 ABS usage of an air admittance valves. plastic, listed Scheduled 40 PVC plastic, cast iron, or other listed SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) or approved materials. RECOMMENDATION: Revise Section 7-11.3.1 to read as follows: COMMITTEE STATEMENT: The proposal is accepted with %11.3.1 ~n Toilet Vent. The/lrain piping for each water closet editorial revisions. shall be vented by a 1-1/2 in. (40-ram) minimum diameter vent or NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6 by a rectangular vent of venting cross-section equivalent to or VOTE ON COMMITTEE ACTION: greater than the venting cross-section of a 1-1/2 in. (40-mm) AFFIRMATIVE: 6 diameter vent. The vent shall be connected to the water closet drain by on of the following methods: (a) A 1-1/2 in. (40-mm) minimum diameter individual vent pipe or equivalent that is directly connected to the water closet drain (Log #72) piping within the distance allowed in %11.3.5 for 3-in. (75-mm) Committee: MAN-PLU trap arms una--rn!n!~hcd "~n :!zc "~rc'-gh "~z rccf. 501- 120 - (%10.5.1.1 [3280.610(e)(1)(i)] ): Reject (b) [Remains unchanged] SUBM/TTER: Frank Walter, Manufactured Housing Inst. (MHI) (c) [Remains unchanged] RECOMMENDATION: Revise Section 7-10.5.1.1 to read as SUBSTANTIATION: This recommended change was originally follows: submitted to HUD by the MHCSS Consensus Committee on 2-28- %10.5.1.1 Piping of 1-1/2 in. (40-ram) minimum diameter shall 96, but no action has been taken. This change is necessary to be required for one, and not more than three, individually vented permit the use of some mechanical valves to vent the water closet fixture(s). (toilet). Excention: A single comnarmaent sink or lavatory shall be COMMITTEE ACTION: Reject. permitted to be drained bv a 1-1/4 in. f32 mm) diameter pipe. COMMITTEE STATEMENT: No substantiation is provided to SUBSTANTIATION: This recommended change was originally demonstrate the adequacy of the mechanical valves for the submitted to HUD by the MHCSS Consensus Committee on 12-26- proposed application. 90, but no action alas been taken. The 1989 CABO One- and Two- NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6 Family Dwelling Code, Tables P-2206.4.1 and P-2206.6.7, permits VOTE ON COMMITTEE ACTION: single compartment lavatories to be drained by a 1-1/4 inch pipe. AFFIRMATIVE: 5 COMMITTEE ACTION: Reject. NOT RETURNED: 1 Carroll COMMITTEE STATEMENT: This proposal would conflict with COMMENT ON AFFIRMATIVE: many product manufacturer's installation instructions. LEWIS: See my Comment on Affirmative Ballot on Proposal 501- NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6 103 (Log #60). VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 6 (Log #183) Committee: MAN-PLU (Log #73) 501- 123 - (7-I 1.3.1 (b) [3280.611 (c) (I) (ii)] ): Reject Committee: MAN-PLU SUBMITTER: Ted Gugliotta, Fleetwood Enterprises 501- 121 - (%11.2.1 [3280.611(b)(1)] ): Accept in Principle RECOMMENDATION: Revise the first sentence as follows: SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) "...trap arms through a minimum 2-in. (50-ram) wet vented RECOMMENDATION: Revise Section %11.2.1 to read as follows: drain..." 7-11.2.1 Pipe. Vent piping shall be of =tz.nd~-d v:c'ght Talvanized Add a second sentence as follows: steel, ":xcught !ten, brass, copper tube DWV, listed "Sections of the wet vented drain that is 3-in. (75 mm) diameter plastic, cast iron, or other approved or listed materials. Inay carry, the wast~ of an unlimited number of fixtures." SUBSTANTIATION: This recommended change was originally SUBSTANTIATION: Since no reference is made to larger titan 2 submitted to HUD by the MH~ Consensus Committee on 2-28- in. pipe sizes, HUD has considered 2 in. as the minimum size 96, but no action has been taken. This change updates the required. As such increasing the pipe size to 3 in. does not permit material requirements. Wrought iron pipe has not been produced increasin~ the number of fixtures even though other model codes in the U.S. since 1953. Steel pipe must be galvanized steel pipe to do. Detml ~A" illustrates an example of a non-conforming design be considered acceptable for drainage and vent piping. even if the section or pipe identified is increased to ~ in. A Furthermore, the ASTM Standard lists standard weight steel pipe. common result is that designs must often show such 2 in. wet The standard should also distinguish between ABS and PVC vented drains to connect to the main drain downstream of the plastic pipe. The statement saying plastic pipe is a kin to metallic toilet (Detail B). This often requires extra pipe and fittings, joists pipe can be misleading unless materials conform to their to be cut and blocked and additional labor to assemblies and respective material standards. install. It can also add to the amount of ship loose plumbing COMMITTEE ACTION: Accept in Principle. installed and make it ditficult to block to maintain slope. For Revise 7-11.2.1 to read as follows: additional reference see Details "D," "E," "F," and "G" and 7-11.2.1 Pipe. Vent piping shall be standard weight galvanized Examples 1, 2, and 3. steel, brass, copper tube DSW, listed Scheduled 40 ABS plastic, Note: Supporting material (Artwork) is available for review at listed Scheduled 40 PVC plastic, cast iron, or other listed or NFPA Headquarters. r oved materials. COMMITTEE ACTION: Reject. TrEE STATEMENT: The proposal is accepted with COMMITTEE STATEMENT: The substantiation is not sufficient editorial revisions. to support the proposal. Engineering calculations or arguments

365 NFPA 501 -- MAY 2000 ROP

are needed to demonstrate that the proposal will work and not with 1971 Amendment 1, and MIL-L-10547E, Liners, Case, and sacrifice the existing health and safety requirements of the Sheet, Overwrap; Water-Vapor Proof or Waterproof, Flexible. standard. %11.4.6 Gravity operated mechanical vents shall be permitted to NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6 vent any fixture nrovided there is at least on 1-1/2 in. (40 mm~ VOTE ON COMMITTEE ACTION: diameter vent connected to the drainage system which terminates AFFIRMATIVE: 6 through the roof into the onen air. 7-11.-4.7 Mechanical vent clevices which have bqen certified ill accordance with ANSI ASSE 1051-1990 with 1992 revisions. Air (Log #24) Admittance Valves for Plumbing Drainage Systems. shall be Committee: MAN-PLU permitted to terminate in the attic cavity nrovided: 501- 124 - (7-11.3.1(c) [3280.611(c)(iii)]): Reject (a) The attic cavitv is accessible as described in 7-11.4.1, SUBMITTER= Dana C. Roberts, State of Oregon (b) The sealin~ device is installed a minimum of 6 in. (152 mm) RECOMMENDATION: Revise text to read: above building insulation materials. "%11.3.1(c) [3280.611(c)(iii)] Two or more vented drains when (c) The attic is vented in accordance with 6-4.3.1. at least one is wet-vented, or 2-in. diameter (minimum), and each SUBSTANTIATION: This recommended change was originally , drain is separately connected to the toilet drain." submitted to HUD by the MHCSS Consensus Committee on 2-28- SUBSTANTIATION: Should be two or more vented drains 96, but no action has been taken. This new proposal changes the (through the roof) to clarify this. present section of the 501 Standard covering "anti-siphon trap vent" COMMITTEE ACTION: Reject. devices to one covering "mechanical vents" and expands it to cover COMMITTEE STATEMENT: The proposal text does not clarify the different conditions under which a spring loaded vent or the requirement. The substantiation does not indicate what the gravity vent ("air admittance valve") may be used. It also deletes rUobl em is. current subsection 7-11.4.$ because it is unnecessary. OF COMMITTEE MEMBERS ELIGIBLE TO MBER VOTE: 6 New section 7-11.4.6 is to require a single through-the-roof vent. VOTE ON COMMITTEE ACTION: New section 7-11.4.7(b) and 7-11.4.6 are for use of the air AFFIRMATWE: 4 admittance valve. New section 7-11.4.7(c) is added because of the ABSTENTION: 1 fact that air admittance valves are tested to a maximum NOT RETURNED: 1 Carroll temperature of 159°F. EXPLANATION OF ABSTENTION: COMMITTEE ACTION: Reject. LEWIS: To avoid perceived conflict of interest, I abstain from COMMITTEE STATEMENT: No substantiation is provided to voting on this item since the proponent is also my employer. demonstrate the adequacy of the mechanical valves for the proposed application. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6 VOTE ON COMMITTEE ACTION: (Log #75) AFFIRMATIVE: 5 Committee: MAN-PLU NOT RETURNED: 1 Carroll 501- 125- (7-11.4 [$280.611(d)]): Reject COMMENT ON AFFIRMATIVE: TCC NOTE: The Technical Correlating Committee on LEWIS: See my Comment on Affirmative Ballot on Proposal 501- Manufactured Housing (MAN-AAC) directs that a public comment be submitted in the Correlating Committee's name 103 (Log #60). permitting the Technical Committee on Plnmbin~ for Manufactured Housing (MAN-PLU) an opportunity to review this proposal in respect to the related Technical Correlating Committee comment beit~g submitted on Proposal 501-122 (Log (Log #76) #74). It is the understanding that additional substantiation willbe Committee: MAN-PLU forwarded to the Technical Committee for their review. 501- 126- (7-11.6 [3280.611(0]): Reject TCC NOTE: The Technical Correlating Committee on SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) Manufactured Housing (MAN-AAC) directs that a public RECOMMENDATION: Revise Section 7-11.4 to read as follows: 7-11.4 A=z~ S!phvn Trzp Mechanical Venti. A~ a.~ ::phvn L-c.p comment be submitted in the Correlating Committee's name permitting the Technical Committee on Plumbing for Mechanical vents shall be permitted to be used az z 2cc8na.4.:.'7 -'ent Manufactured Housing (MAN-PLU) an opportunity to review this -1 ...... r" ...... O ...... i ~ ...... O~. proposal in respect to the related Technical Correlating I/2 !n. ~.tAn...... ----~.~ to protect nlumbin~ fixture trap~ when installed Committee comment beit~ submitted on Proposal 501-122 (Log in accordance with the man'ufacturer's recommendations and the #74). It is the understanding that additional substantiation willbe conditions in 7-11.4.1 through 7 !!A.5 7-11.4.7. forwarded to the Technical Committee for their review. '7...... ,, a A, %11.4.] The :n'd :,ipk~r. "---~_vsnring_ ooerated_ SUBMI~ Frank Walter, Manufactured Housing Inst. (MHI) mechanical vent shall be installed in a location that allows a free RECOMMENDATION: Revise Section 7-11.6 to read as follows: flow of air and shall be accessible for inspection, maintenance, 7-11.6 Vent Terminal. Every vent shall terminate through the and replacement. The sealing function shall be at least 6 in. (152 roof. through the exterior wall or to a mechanical vent ~levicg in mm) above the top of the trap arm. accordance with the limitation of Section 7-11.4, ~!!.A..I 7-11.4.2 No more than two fixtures individually • 7-11.6.1 Roof Extensions. F_=ch ":c~= F'~c :h---'-! ¢:::cnd "~=-~'ag~ !~ protected by the an'3 ~]ph~n "--- snrin~ onerated mechanical vent ...... o ...... c .~. =;ca:.:, Vents that extend throl~gh the• shall be drained by a common 1-1/2 in. (40 mm) drain. roof shall extend undiminished in size, not less than 2 in. (50 mm) 7 ! !.a.. ° 7-11.4.3 Minimum drain size for three or more fixtures above the roof. Vent openings shall not be less than $ ft (914 ram) individually protected by the :~t" z~ph.~r...... ot~ snrin~__ onerated. away from any motor-driven air intake that opens into habitable mechanic;~l vent shall be 2 in. (50 mm). space. 7 ! 1.§.2 The opening around each vent pipe shall be made 7 !!.~.3 7-11.4,4 A prl.maG' ;'en: ~mck =,ha!! ~c in~:=llcd :c. ;'cut watertight by an adequate flashing or flashing material. 7-11.6.2 Exterior Wall Extension. Vents that extend throutth the t^~:~- Soring ooerated mechanical vents shall be restricted tO exterior wall shall terminate a minimum of 10 ft ($.05 IB) ~,bov¢ venting fixtures with 1-1/2 in. (40 mm~ trans. the finished floor of the manufactured home. The vent shall 7-11.4.5 Materials for the ~'~.~ ~!p~c~= L'~F spring operated terminate to an elbow turned downward or to a proper ,creened mechanical vents shall be as follows: onening that nrevents the entrance of birds and rats. (a) Capand housing shall be listed acrylonitrile-butadiene- S~JBST-ANTL~TION: This recommended change was originally styrene, DWV grade. submitted to HUD by the MHC~S Consensus Committee on 2-28- (b) Stem shall be DWV grade nylon or acetal. 96, but no action has been taken. This change will add options for (c) Spring shall be stainless steel wire, Type 302 terminating the vent piping. The majority of the model plumbing (d) Sealing disc shall be neoprene, conforming to CISPI-HSN-85, codes permit vents to terminate through the roof, through a side Specification for Neoprene Rubber Gaskets fir HUB and Spigot wall, and to an air admittance valve. This language will rec%qaize Cast Iron Soil Pipe and Fittings, and ASTM CA64, Standard all of the options for manufactured homes. A side wall vent ts Specification for Rubber Gaskets for Cast Iron Soil Pipe and required to be 10 feet above ground to allow odors to dissipate. Fittings, or FS ZZ-R-765B, Silicone Rubber, Low and High The openings must be protected to prevent birds from building a Temperature and Tear Resistant, Conforming to Rubber, Silicone, nest in the vent piping.

366 NFPA 501 -- MAY 2000 ROP

COMMITTEE ACTION: Reject. SUBSTANTIATION: Will improve quality of product, reduce COMMITTEE STATEMENT: No substantiation is provided to service/warranty costs and improve customer satisfaction. demonstrate the adequacy of the mechanical valves or exterior wall COMMITTEE ACTION: Reject. venting for the proposed application. COMMITTEE STATEMENT: The proposal is vague and will NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6 create difficulty in the manufacturing and enforcement VOTE ON COMMITTEE ACTION: community. The term "vicinity" is not defined and open to diverse AFFIRMATIVE: 5 interpretation. NOT RETURNED: 1 Carroll NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6 COMMENT ON AFFIRMATIVE: VOTE ON COMMITTEE ACTION: LEWIS: See my Comment on Affirmative Ballot on Proposal 501- AFFIRMATIVE: 6 103 (Log #60).

(Log #145) (Log #77) Committee: MAN-MEC Committee: MAN-PLU 501- 130 - (8-2 Air Conditioning Evaporator Section [3280.702] ): 501- 127- (7-11.6.3 (New) [3280.611(f)(3), New] ): Reject Reject TCC NOTE: The Technical Correlating Committee on SUBMITTER: James A. Ranfone, American Gas Assn. Manufactured Housing (MAN-AAC) directs that a public RECOMMENDATION: Revise text as follows: comment be submitted in the Correlating Committee's name "...Air Conditioning Evaporator Section. A heat exchanger used ermitting the Technical Committee on Plumbing for to cool or, in the case of a heat pump or combination space anufactured Housing (MAN-PLU) an opportunity to review this he~ting and water heating appliance, heat air for use in comfort proposal in respect to the related Technical Correlating cooling, or heating, the living space..." Committee comment being submitted on Proposal 501-122 (Log SUBSTANTIATION: This change adds combination space #74). It is the understanding that additional substantiation wUlbe heating and water heating appliances as defined in ANSI/ASHRAE forwarded to the Technical Committee for their review. 124 and expands the definition of air conditioning evaporator SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) sections to recognize the use of combination space heating and RECOMMENDATION: Add a new Section 7-11.6.3 to read as water heating appliances in manufactured housing. Combination follows: space heating and water heating appliances have been in use for 7-11.6.3 Vent Extension through Walls. Vent extension through a over 15 years and are currendy recognized as acceptable by HUD. wall or overhang-vents extendin~ through a wall or overhang ~hall COMMITTEE ACTION: Reject. terminate downward. No vent terminal shall be located beneath COMMITTEE STATEMENT: The proposed language does not fit anv door. window or other onening, nor sl~all any su~b vent in the definition of Air Conditioning Evaporator Section. terminal be within 5 ft (1.52 m) horizontally of such onenin~ NUMBER OF COMMnq'EE MEMBERS ELIGIBLE TO VOTE: 12 unless it is at least 2 ft (610 mm) above the top of the openiqg, VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 12 SUBSTANTIATION: This recommended change was originally submitted to HUD by the MHCSS Consensus Committee on 12-26- 90, but no action has been taken. The 1989 CABO One- and Two- Family Dwelling Code, Sections P-2207.5.3 and P2207.5.1, allow (Log #CP402) vents to terminate through a wall or overhang. Committee: MAN-MEC COMMITTEE ACTION: Reject. 501- 131 - (8-2 Class 2 Air Ducts): Accept COMMITTEE STATEMENT: No substantiation is provided to SUBMITTER: Technical Committee on Mechanical for demonstrate the purpose of the proposed vent extensions for the Manufactured Housing proposed application. RECOMMENDATION: Delete the definition of "Class 2 Air NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6 Ducts" without substitution. VOTE ON COMMITTEE ACTION: SUBSTANTIATION: The definition is not necessary as the term AFFIRMATIVE: 5 is not used in the standard. NOT RETURNED: 1 Carroll COMMITTEE ACTION: Accept. COMMENT ON AFFIRMATIVE: NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 LEWIS: See my Comment on Mtlrmative Ballot on Proposal 501- VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 12 103 (Log #60).

(Log #21) Committee: MAN-PLU (Log #146) 501- 128 - (7-12.1 [3280.612(a)] ): Reject Committee: MAN-MEC SUBMITTER: Albert Endres, Oregon IPIA/SAA 501- 132 - (8-2 Combination Space Heating and Water Heating RECOMMENDATION: Add a sentence to read: Appliance [3280.702]): Accept in Principle "All shower riser piping shall be pressur~ tested up to the shower SUBMITTER: James A. Ranfone, American Gas Assn. RECOMMENDATION: Revise text as follows: head." "...Combination Soace Heating and Water Heating Annliance. A SUBSTANTIATION: Leaks at shower risers are a fact and are unit that is designed t0 provide space heating ar~l water heating hard to detect by occupants. Consumer assistance cases show this from a single primary eoergy source ..." to be a costly problem. Testing would reduce the number of leaks. SUBSTANTIATION: This change adds the definition of COMMITTEE ACTION: Reject. combination space heating and water heating appliances using the COMMITTEE STATEMENT: The type of diverter valve in use definition from ANSI/ASHRAE 124. Combination space heating prevents this test from being conducted in tub/shower and water heating appliances have been in use for over 15 years combinations. and are currently recognized as acceptable by HUD. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6 COMMITTEE ACTION: Accept in Principle. VOTE ON COMMITTEE ACTION: I dd a new definition as follows: AFFIRMATIVE: 6 Combination Space Heating and Water Heating Appliance. A listed unit that is designed to provide space heating and water heating from a single primary energy source. (Log #181) COMMITTEE STATEMENT: The committee believes a Committee: MAN-PLU combination space headng and water heating appliance should be 501- 129- (7-12.1 and 7-12.2 [3280.612(a) and 3280.612(b)] ): listed. The committee action also makes the proposed definition Reject consistent with others in the standard. SUBMITTER: Dan Butterfield, Fleetwood Enterprises Inc. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 RECOMMENDATION: Add the following new text: VOTE ON COMMITTEE ACTION: "Test shall be reconducted when reoair work occurrin~ in the AFFIRMATIVE: 12 viclnitv of tested system has the ootendal to damage system."

367 NFPA 501 -- MAY 2000 ROP

(Log #165) (Log #164) Committee: MAN-MEC Committee: MAN-MEC 501- 133- (8-2 Direct Vent Appliances [3280.702] ): Accept 501- 136 - (8-2 Sealed Combustion System Appliance [3280.702] ): TCC NOTE: The Technical Correlating Committee on Reject Manufactured Housing (MAN-AAC) directs that a public SUBMITTER: James A. Ranfone, American Gas Assn. comment be submitted in the Correlating Committee's name RECOMMENDATION: Delete the following text: requesting that the Technical Committee on Mechanical for Manufactured Housing (MAN-MEC) give consideration to Mr...... ~:-'- ..... "~^-:--~.. !~ ccn:'.=uc:cd ~c. "-h:.= =2! -: =upp1"c~ fcr Pabian's comment onhis affirmative ballot. SUBMITTER: James A. Ranfone, American Gas Assn. RECOMMENDATION: Add the following new text: "Direct Vent ADDliances. Appliances that are constructed and SUBSTANTIATION: "Sealed combustion" represents a specific installed so that all air for combustion is derived direcdv from the category of equipment under the relevant consensus standards outsicl¢ atmosDhere ~nd all flue vases are discharged to the outside (ANSI Z21/Z85). Currently, ANSI standards for "sealed atmosohere..." combustion" gas equipment are inactive, and listed equipment of the "sealed combustion" type is not available in the market. SUBSTANTIATION: Currendy, no definition for direct vent COMMITTEE ACTION: Reject. appliances exists in the standard, although the terminology is used. COMMITTEE STATEMENT: The committee disagrees with the The definition proposed is from ANSI Z223.1/NFPA 54. submitter's substantiation. There are products currendy marketed COMMITTEE ACTION: Accept. and listed as "sealed combustion" type, contrary to the NUMBER OF COMMITTEE MF_2dBERS ELIGIBLE TO VOTE: 12 substantiation given. VOTE ON COMMITTEE ACTION: NUMBER OF COMMITI'EE MEMBERS ELIGIBLE TO VOTE: 12 AFFIRMATIVE: 12 VOTE ON COMMITTEE ACTION: COMMENT ON AFFIRMATIVE: AFFIRMATIVE: 12 PABIAN: (8-2 Direct Vent Appliances.) The purpose of the • editorial change is to recognize a direct vent appliance (DVA) which normally requires a separate device to receive combustion air and discharge flue gases. A sealed combustion appliance is (Log #148) similar to a DVA except the combustion air and flue gas discharge Committee: MAN-MEG is normally integral with the design of the appliance. 501- 137 - (8-2 Water Heater [3280.702] ): Accept Direct Vent Appliance - An annliance that is installed with a SUBMITTER: James A. Ranfone, American Gas Assn. DireO; Vent System. Direct Vent System- A system or method of RECOMMENDATION: Revise text as follows: construction where all air for combustion is derived directly from "...Water Heater. An appliance for heating water for domestic the outside attnosDhere and all flue vases are discharged to the purposes ~hcr ~h~= :p:.zz hz=d=g...". 9utside atmosnhere. SUBSTANTIATION: This change recognizes the use of WALTER: I agree with the Comment on Affirmative by Pabian. I combination space heating and water heating appliances in recommend that the wording proposed by Pabian be accepted. manufactured housing for space heating as well as water heating. Combination space heating and water heating appliances have been in use for over 15 years and are currently recognized as acceptable by HUD. (Log #CP405) COMMITTEE ACTION: Accept. Committee: MAN-MEC NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 501- 134 - (8-2 Energy Efficiency Ratio (EER)): Accept VOTE ON COMMITTEE ACTION:" SUBMITI'ER: Technical Committee on Mechanical for AFFIRMATIVE: 10 Manufactured Homing NEGATIVE: 2 RECOMMENDATION: Delete the definition of "Energy Efficiency EXPLANATION OF NEGATIVE: Ratio (EER) without substitution. HEIMAN: The use of a domestic water heater for comfort SUBSTANTIATION: The US Dept. of Energy (DOE) is heating as well requires that the combination comfort, potable responsible for the material contained in the definition, so it is not water heating appliance have a SEER equal to those required for necessary in the standard. the same size comfort heating appliances. For this addition to the COMI~TYEE ACTION: Accept. standard to be acceptable, the ett~ciency requirement must be NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 included. VOTE ON COMMITTEE ACTION: LUBLINER: Please be aware that 1 am requesting to change my AFFIRMATIVE: 12 vote on Proposal 501-137 (Log #148) to a negative vote based on Mr. Heiman's Explanation of Negative Vote. I would suggest adding the following language, "in no case shall the Annualized Fuel Utilization Efficiency' (AFUE) be less than that required by (Log #147) NEACA for comfort heaung devices." Without this additional Committee: MAN-MEC language I vote against this proposal. 501- 135- (8-2 Heating Appliance [3280.702] ): Accept in Principle SUBMITTER: James A. Ranfone, American Gas Assn. RECOMMENDATION: Revise text as follows: "...Hearing Appliance. An appliance for comfort heating and/or (Log #141) for domestic water heating..." Committee: MAN-MEC SUBSTANTIATION: This change expands the definition of 501- 138 - (8-3 [$280.703]): Accept heating appliance to recognize the use of combination space SUBMITTER: James A. Ranfone, American Gas Assn. heating and water heating appliances in manufactured housing. RECOMMENDATION: Revise text as follows: Combination space heating and water heating appliances have National Fuel Gas Code ~NFPA 54, 1996. been in use for over 15 years and are currently recognized as SUBSTANTIATION: This change adds the full ANSI designation acceptable by HUD. for the National Fuel Gas Code. COMMITTEE ACTION: Accept in Principle. COMMITrEE ACTION: Accept. I evise definition as follows: NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 Heating Appliance. An appliance for comfort heating, er fc.r VOTE ON COMMITTEE ACTION: domestic water heating~ AFFIRMATIVE: 12 COMMITTEE STATEMENT: The use of "and~or" is not permitted by the NFPA Manual of Style. The committee action should meet the suhmitter's intent. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 12

368 NFPA 501 m MAY 2000 ROP

(Log #142) SUBSTANTIATION: Update ANSI Z21 standards, add the Committee: MAN-MEC standard for corrugated stainless steel tubing, and add the full 501- 139 - (8-3 [3280.703]): Reject ANSI designation for the National Fuel Gas Code. SUBMITTER: James A. Ranfone, American Gas Assn. COMMITTEE ACTION: Accept. RECOMMENDATION: Add the following new text: NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 International Fuel Gas Code. 1997. VOTE ON COMMITTEE ACTION: SUBSTANTIATION: This change is needed to recognize the AFFIRMATIVE: 12 International Fuel Gas Code, which presents a scope of gas coverage comparable to ANSI 223.1/NFPA 54, includes provisions of ANSI 223.1/NFPA 54 as part of its "standards" sections, and is a National Model Code. (Log #166) COMMITTEE ACTION: Reject. Committee: MAN-MEC COMMITTEE STATEMENT: The standard currently references 501- 141 - (Table 8-3 [3280.703]): Accept NFPA 54, a nationally recognized consensus standard. Also, NFPA SUBMITTEI~ James A. Rarffone, American Gas Assn. 54 contains provisions not part of the IFGC. The submitter has I RECOMMENDATION: Revise text: not provided adequate technical justification. Table 8-3 NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 Appliances Reference Standards VOTE ON COMMITTEE ACTION: National Fuel Gas Code ~NFPA 54 AFFI RMATWE: 12 SUBSTANTIATION: Add the full ANSI designation for the National Fuel Gas Code. COMMITTEE ACTION: Accept. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 (Log #133) VOTE ON COMMITTEE ACTION: Committee: MAN-MEC AFFIRMATIVE: 12 501- 140- (Table 8-3 {3280.703]): Accept SUBMITTER: James A. Ranfone, American Gas Assn. ECOMMENDATION: Revise Table 8-3 as follows:

Table 8-3 Minimum Standards

Appliances Referenced Standards Central Cooling Air Conditioners UL 465-seventh edition-1984 with revisions through December 24, 1987 Liquid Fuel-Burning Heating Appliances for Manufactured Homes and UL 307A-seventh edition-1995 Recreational Vehicles Electric Air Heaters UL 1025-second edition-1987 with revisions July 13, 1989, February 6, 1990, and December 3, 1991

Electric Baseboard Heating Equipment UL 1042-fourth edition-1995

Electric Central Air Heating Equipment UL 1096-fourth edition-1986 with revisions July 16, 1986 and January 30, 1988

Gas-Burning Heating Appliances for Mobile Homes and Recreational Vehicles UL 307B-fourth edition-1995

Gas Clothes Dryers, Vol. 1, Type 1 Clothes Dryers ANSI Z 21.5.1-1995

Gas Fired Absorption Summer Air Conditioning Appliances ANSI Z 21.40.1 19°I, ;;-~ Addcndum Z 2!A9.!= !952 1996. with Addendum

Gas-Fired Central Furnaces [Ez:ceFt P'rect xr~...... S)=tem r, ..... 1 v ...... •1 ANSI Z 21.47-!99~ 1995. with Addenda Z 21.47a-1995 and Z 21.47b-1997

Household Cooking-Gas Appliances ANSI Z 21.1-1996. with Addenda Z ~I.|a-1997 and Z 21.Ib-1998

Refrigerators Using Gas Fuel ANSI Z 21.19-1990, with Addendum ANSI Z 21.19a-1992 Gas Water Heaters, Vol. 1, Storage Water Heaters with Input Ratings of 75,000 Btu ANSI Z 21.10.1L!99~ 1998 per Hour or Less

Heat Pumps" 559-fourth edition-1985 as amended through Sept. 6, 1985

Household Electric Storage Tank Water Heaters UL 174-ninth edition-1995

369 NFPA 501 m MAY 2000 ROP

Ferrous Pipe and Fittings

Appliances Referenced Standards

Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded ASTM A 53-1996 and Seamless

Standard Specification for Electric-Resistance-Welded Coiled Steel Tubing for Gas ASTM A 539-90a and Fuel Oil Lines

Pipe Threads, General Purpose (In.) ASME B 1.20.1-1983

Welding and Seamless Wrought Steel Pipe ASME B 36.10M-1995

Ga~ piping Systems Using Corrugated Stainless Steel Tubin~ LC 1-1997 Nonferrous Pipe, Tubing, and Fittings

Standard Specification for Seamless Copper Water Tube ASTM B 88-1995

Standard Specification for Seamless Copper Tube for Air Conditioning and ASTM B 280-1995 Refrigeration Field Service

Metal Connectors for Gas Appliances ANSI Z 21.24-1993

Manually Operated Gas Valves for Appliances, Appliance Connector Valves, and ANSI Z 21.15-1992 Hose End Valves

Standard for Gas Supply Connectors for Manufactured Homes IAPMO TSC 9-1984

Standard Specification for General Requirements for Wrought Seamless Copper and ASTM B 251-1993 Copper-Alloy Tubes Standard Specification for Seamless Copper Pipe, Standard Sizes ASTM B 42-1993

A~IC! "7 Q1 £A~ 1Nn c) Miscellaneous

Factory-Made Air Ducts and Connectors UL 181-ninth edition-1996

Tube Fittings for Flammable and Combustible Fluids, Refrigeration Service, and UL 109-fifth edition-1993 Marine Use

Pigtails and Flexible Hose Connectors for LP-Gas UL 569-seventh edition-1995

Roof Jacks for Manufactured Homes and Recreational Vehicles UL 311-eighth edition-1994

Relief Valves and Automatic Gas Shutoff Devices for Hot Water Supply Systems ANSI Z 21.22-1986, with Addendum ANSI Z 21.22a-1990

Automatic Gas Ignition Systems and Components ANSI Z 21.20- !ff23 199~. with Addendum Z 21.20a-1998

Automatic Valves for Gas Appliances ANSI Z 21.21-1995. with Addendum Z 21.21a-1998 Gas Appliance Thermostats ANSI Z 21.23-1993. with Addenda Z 21.23a-1994 and Z 21.23b-1997 Gas Vents UL 441-ninth edition-1996

370 NFPA 501 u MAY 2000 ROP

Miscellaneous (continued)

Appfiaaces Referenced Standards Standard for the Installation of Oil-Burning Equipment NFPA 31, 199"/

The following sections are applicable: 1-1, 1-2, 1-3, 1-4 except 1-4.1, 1-5.1, 1-5.2, 1-5.4.2, 1-5.4.3, 1-5.5, 1-5.6, 1-6, 1-7.2 except 1-7.2.4, 1-8, 1-9, 1-10.1, 3-1.1, 3-1.3, 3-1.4, 3-1.5, 3-1.6, 3-10, 4-1.3, 4-1.4, 4-1.5, 4-2, 4-3 except 4-3.2, 4-4 except 4-4.2, 4-4.5.4, 4-4.6, 4-4.7, 4-4.9, and 4-4.10 Appendices B, C, and E

National Fuel Gas Code ANSI Z223.l/NFPA 54. 1996

Standard for the Installation of Warm Air Heating and Air Conditioning Systems NFPA 90B, 1996

The following sections are applicable: 2-2.4, 2-3.6, Table 3-1.3, Section B, 4-1.6

Standard for the Storage and Handling of Liquefied Petroleum Gases NFPA 58, 1995 edition

Flares for Tubing SAEJ 533, 1992

Chimneys, Factory-Built Residential Type and Building Heating Appliance UL 103-ninth edition, 1995

Factory-Built Fireplaces UL 127-sixth edition with revisions January 4, 1989,June 10, 1991, and June 29, 1992

Room Heaters, Solid-Fuel Type UL 1482£ffth edition-1996

Fireplace Stoves UL 737-eighth edition-1996

UnitmT Air-Conditioning and Air-Source Heat Pump Equipment AR1210/240-1989

AGA Requirements for Gas Connectors for Connection of Fixed Appliances for No. 3-87 Outdoor Installation, Park Trailers and Manufactured (Mobile) Homes to the Gas Supply

(Log #CP401) EXPLANATION OF NEGATIVEa Committee: MAI~MEC HEIMAN: I have received no information on the Radon standard 501- 142 - (Table 8-3): Accept for gas logs that allows them to be installed in fireplaces listed for SUBMITFER: Technical Committee on Mechanical for useinmanufactured homes. Radco should provide detailed Manufactured Housing justification as to why the organization listing the wood burning RECOMMENDATION: Add the following reference publication fireplace has not seen fit to provide for gas burning equipment to to Table 8-3: be installed. It is essent~,! for an automatically controlled or time RADCO Standard DS-010-91, Decorative Gas Appliances for unlimited fuel burning .a~pliances be a ~direct vent* or ~sealed Installation in Solid Fuel Burning Fireplaces Approved for use'in combustion system" applrances. Failing this, the only alternative is Manufactured Housing. to require the installation of a carbon monoxide monitoring SUBSTANTIATION: This standard pertains to gas-fired detector in homes equipped with gas burning fireplaces. appliances or gas logs, which are listed for use in wood burning LUBLINER: I do not support this propo, salbecause I do not fireplaces. The Department has recognized this standard by aJuly believe that the cost savings auoCiated rW~th it outweigh the health 6, 1991 letter from Philip Schulte, then Chief, Compliance Branch, and safety concerns associated with the backdrafting of these Manufactured Housing and Construction Standards Division. This devices. letter states that gas log inserts listed to the proposed referenced Those who convert solid fuel (wood) fireplace unit into gas , standard are acceptable for installation in manufactured homes. fireplaces do it to save a few dollars. If these cheaper "retrofits This standard was developed through RADCO's nationally become available, it will be more difficult for manufacturers to sell recognized test facilities and listing and inspection services. the safe "t~aled.door" gas fireplaces currently used. Gas logs listed to the RADCO standard can be installed in the The RADCO standard DS-010-91 does not address the potential home during the rfianufacturing process. It is not necessary to list for the backdrafting of combustion pollutants into the home the gas log insert as an integral part of the fireplace. Any through leaky operable doo m common on wood fireplaces. This decorative gas log insert listed to the RADCO standard can be backdraffing can expose occupants to carbon monoxide and other installed in any fireplace previously listed for manufactured homes. combustion by-products which came ~1"iom health problems. This will be a valued reference standard addition to NFPA 501 Those voting in support of this proposal were unwilling to amend should a homeowner desire to have this type of appliance installed the proposal to require a $20 carbon monoxide alarm be imtalled at the manufacturer's plant prior to delivery to the home site. to mitigate problems associated with the backdraft~ of CO into COMMITI"EE ACTION: Accept. the home: NUMBER OF COMMrFrEE MEMBERS ELIGIBLE TO VOTE: 12 If the C_X3alarms are not installed, I suggest that NFPA/HUD VOTE ON COMMITTEE ACTION: and RADCO work with Andy Persily and the National Institute of AFFIRMATIVE: 10 Science and Technology to evaluate indoor air pollutant occupant NEGATIVE: 2 exposure risks associated with the backdraftlng of these devices. To do this analysis the RADCO standard DS-010-91 needs to quantify backdrafting potential and determine the relationship

371 NFPA 501 -- MAY 2000 ROP

between pollutant emission rates and indoor-outdoor pressure available for two years. It was discontinued by all four of the differentials which cause backdrafting. Copper tubing manufacturers since there was zero demand for it. I ordered a gas-fireplace with my manufactured home. My Severalyears ago in the state of Utah, there was a period when the fireplace has non-operable tightly sealed doors that eliminate the Natural Gas had unacceptable quantities of Sulfur content. potential for backdrafing. The proposal calls gas fireplaces Tinned copper was used for a period of time, and prevented sulfur "decorative" devices although many people operated gas fireplaces corrosion. The Sulfur condition has long been corrected. Natural for 12-24 hours at a time using them as primary heating since they Gas companies are also mostly using plastic piping for their lines cost less to operate than electric furnaces. now. Apparently it was not a Propane problem, and copper is very COMMENT ON AFFIRMATIVE: widely used in Propane installations through-out the world. I am a ZIEMAN: Decorative Gas Appliances for Installation in Solid- member of the Technology and Standards committee at NPGA Fuel Burning Fireplaces (ANSI Z21.60) are designed to be placed and have not heard of any Sulfur problems in many years. in masonry or listed wood burning fireplaces. These appliances are listed to ANSI Z21.60 and are installed in site built as well as manufactured homes by the tens of thousands each year. Because of HUD's unique requirement for fireplace "integral door(s) or (Log #170) shutters(s)" found in 3280.709(g)(1), decorative gas appliances Committee: MAN-MEC listed to the ANSI Z21.60 may not be suitable for use in 501- 145 - (8-5.2.4 (New) [3280.705(b)(4), New]): Accept in manufactured homes. RADCO Standard DS-010-91 was written to Principle correct this problem. See letter from HUD dated July 6, 1991 SUBMITTER: James A. Ranfone, American Gas Assn. which indicates acceptance of RADCO DS-010-91. RECOMMENDATION: Add a new 8-5.2.4: Currently decorative gas appliances conforming to ANSI Z21.60 8-5.2.4 Corrugated stainless tubin~ systems shall be tested, listed. are being installed in manufactured homes in the field by the and installed in accordance with AIQSi/IAS LC-1-1-1999. Gas thousands. This is a potentially hazardous situation. Appliances Pinin~ Systems Usin~ Corrugated Stainless Steel Tubing. listed to RADCO DS-010-91 could be installed in the factory and Renumber sections as follows: eliminate the potential l)azard noted just above. 85.2A 8-5.2.5... This proposal simply incorporates an already HUD recognized reference standard into the standards. E.2.E 8-5.2.6... o 5.2.~ 8-5.2.7... E.2.7 8-5.2.8... SUBSTANTIATION: This change adds an appropriate reference (Log #CP404) to the standard for corrugated stainless steel tubing, which is now Committee: MAN-MEC widely used in residential gas installations and which is allowed 501- 143- (8-4): Accept under most building codes as well as under ANSI 223.1/NFPA 54. SUBMITTER: Technical Committee on Mechanical for COMMITTEE ACTION: Accept in Principle. Manufactured Housing I dd a new 8-5.2.5 as follows: ] RECOMMENDATION: Delete Section 8-4 in its entirety. 8-5.2.5 Corrugated stainless steel tubing (CSST) systems shall be SUBSTANTIATION: Fuel supply systems are site-installed, listed and installed in accordance with ANSI/IAS LC-1-1997, Gas therefore, they are not within the scope of the standard. Piping Systems Using Corrugated Stainless Steel Tubing, and the COMMITTEEACTION: Accept. requirements of this Section. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 COMMITTEE STATEMENT: The committee actions are intended VOTE ON COMMITTEE ACTION: for editorial clarification. AFFIRMATIVE: 12 NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 11 NEGATIVE: 1 (Log #149) EXPLANATION OF NEGATIVE: Committee: MAN-MEC HALLIWILL: It is my understanding LC-1 was developed for the 501- 144- (8-5.2.3 [3280.705(b)(3)1 ): Reject installation of piping systems in conventional buildings. No SUBMITrEP¢ James A. Ranfone, American Gm Assn. evidence was given to show this standard is applicable to this form RECOMMENDATION: Revise text as follows: of construction. 8-5.2.3 Copper tubing shall be annealed type, Grade K or Grade L, conforming to ASTM B 88, Standard Spectfication for Seamless Copper Water Tube, or shall comply with ASTM B 280, Standard Specification for Seamless Copper Tube for Air Conditioning and (Log #153) Re~igfcation Field Service. C:FF:r va~:==.g :~a1! ~e ".'=.2.-x~!7 Committee: MAN-MEC 501- 146 - (8-5.3.1 Exception (New) [3280.705 (c) (1) ] ): Reject SUBSTANTIATION: Recent scientific data* and field experience SUBMrITER: James A. Ranfone, American Gas Assn. in millions of site-built homes supports the use of unlinedcopper RECOMMENDATION: Add a new Exception to read as follows: tubing as safe piping material for fuel gas systems in homes 8-5.$.1 All points of crossover shall be readily accessible from the throughout the U.S. Also, tinned lined copper is not currently exterior of the home. required for oil in spite of its relatively high sulfur content. Tin Exception: Gas Dinin~ systems, which utilize continuous lengths lined copper is no longer manufactured. of tubin~ without intermediate inints between termination noints *Lyle, Fred F. Jr., Experimental Evaluation of Conner Corrosion and between sections of an ext~andable or multiple-unit home. by Constituents of Natural Gas. GRI-93/0122, March, 1993. shall not renuire access at crossover noints. (~OMMITTEE ACTION: Reject. SUBSTANTIATION: Tubing systems utilizing continuous lengths COMMITTEE STATEMENT: The submitter has not provided across crossover points have no joints at the crossover points and adequate technical justification. The committee is unsure of the do not re.present a leak hazard or service need, and thus, should safety of untinned copper tubing in various locations in the U.S. not reqmre ready access. with gas having higher levels of sulfur content. The committee COMMITTEE ACTION: Reject. invites the submitter to provide additional technical COMMIa1"EE STATEMENT: The committee believes the documentation during the comment phase. proposed arrangement is impractical. Other requirements for the NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 crossovers themselves have not been addressed by this or other VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 11 ER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 NEGATIVE: 1 VOTE ON COMMITTEE ACTION: EXPLANATION OF NEGATIVE: AFFIRMATIVE: 11 STILLWAGGON: Recommend acceptance of this proposal. NEGATIVE: 1 The substantiation - Tinned copper tubing is not being EXPLANATION OF NEGATIVE: manufactured presently. A bit of history from my conversation HALLIWILL: It is my understanding LC-1 was developed for the with the LeRan company who buy their copper to supply the installation of piping systems in conventional buildings. No Propane Industry from Wolverine, one of the four copper evidence was given to show this standard is applicable to this form manufacturers in the USA-the tinned copper has not been of construction.

372 NFPA 501 -- MAY 2000 ROP

COMMENT ON AFFIRMATIVE: (Log #136) STILLWAGGON: Recommend acceptance of this proposal. Committee: MAN-MEC Proposals have been submitted for this edition of the code which 501- 148- (Table 8-5.4 (New) [3280.705(d)]): Accept in Principle allow the use of corrugated stainless steel tubing (CSST). SUBMITFER: James A. Ranfone, American Gas Assn. Allowing the application of CSST in manufactured housing will RECOMMENDATION: Add a new Table 8-5.4 as shown below. allow the manufacturer to take advantage of this new technology SUBSTANTIATION: Adds maximum capacities for corrugated for the overall benefit of the consumer. Being able to run stainless steel tubing. These capacities are consistent with those continuous lengths of CSST without intermediate joints between found in the National Fuel Gas Code, ANSI Z 923.1/NFPA 54. termination points and between sections will lead to increased use COMMITTEE ACTION: Accept in Principle. of this new technology. To the existing Table 8-5.4, add the word "Copper" before "Tubing" so the existing heading "Tubing-Length" reads "Copper Tubing-Length." (Log #150) Also, to the existing Table 8-5.4, add the material proposed Committee: MAN-MEC under the heading "Corrugated Stainless Steel Tubing (C_.SST)- 501- 147- (8-5.4 [3280.705(d)]): Reject Length." SUBMITTER: James A. Ranfone, American Gas Assn. COMMITTEE STATEMENT: The committee actions are intended RECOMMENDATION: Revise text as follows: for editorial clarification and should meet the submitter's intent. 8-5.4 Gas Pipe Sizing. Gas piping systems shall be sized so that NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 the pressure ~c F tc z2)" at appliance inlet connection(s) from any VOTE ON COMMITTEE ACTION: the gas supply connection(s), when all appliances are in operation AFFIRMATIVE: 11 at maximum capacity, iz n~t mere *..hart 9.5 :.n. (.!2 ~'~.--, ...... NEGATIVE: 1 column, is above the minimum oressure snecified on the EXPLANATION OF NEGATIVE: appliance manufacturer's data Pla~e, as determined on the basis of HALLIWILL: It is my understanding LC-1 was developed for the installation of piping systems in conventional buildings. No test or in accordance with Table 8-5.4. When determining gas pipe evidence was given to show this standard is applicable to this form sizing in Table 8-5.4, gas shall be assumed to have a specific gravity of construction. of 0.65 and be rated at 1000 Btu/ft 3 (.293 kW). The natural gas supply connection(s) shall be no less than the size of the gas p!ping., but shall be no smaller than 3/4-in. (19-mm) nominal (Log #151) pipe size. Committee: MAN-MEC SUBSTANTIATION: The current language leads to overly- 501- 149 - (8-5.8 [3280.705(h)]): Accept in Principle in Part conservative pipe sizing. The new language gives greater flexibility TCC NOTE: The Technical Correlating Committee on to the piping system designer to design more efficient piping Manufactured Housing (MAN-AAC) directs that a public systems using different piping materials and for different fuel gases comment be submitted in the correlating committee's name (i.e., LP and natural gas). requesting that the Technical Committee on Mechanical for COMMITTEE ACTION: Reject. Manufactured Housing (MAN-MEC) give consideration to Mr. COMMITTEE STATEMENT: The proposal would require the Zeiman's comment on his aff'Lrmative ballot. home manufacturer, in all cases, to have knowledge of the gas SUBMITTER: James A. Ranfone, American Gas Assn. pressure available at the site, which is not practical. RECOMMENDATION: Revise text as follows: NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 8-5.8 Concealed Tubing. Tubing shall not be run inside walls, VOTE ON COMMITTEE ACTION: floors, partitions, or roofs unless nrotected from accidental AFFIRMATIVE: 12 nuncture as stinulated in ANSI Z223.1/NFPA 54. Where tubing COMMENT ON AFFIRMATIVE: STILLWAGGON: Recommend acceptance of this proposal. passes through exterior walls, floors, partitions, roofs, or similar Substantiation is incorrect when it states that current language !n='..72!:'.5~='~ construction, such tubing shall be protected by the leads to overly-conservative pipe sizing. Current language leads to use of weather-resistant grommets that shall fit snugly both the oversizing of the piping system. Change would be in keeping with tubing and the bole through which the tubing passes. NFPA 54 and allow the manufacturer to design more efficient SUBSTANTIATION: The cited standard has been demonstrated piping systems. Change only effects Natural Gas Systems and by field and laboratory experience to be effective in preventing should there be locations where higher pressure natural gas was accidental puncture, which is the primary concern of locating not available, the consumer still has the option of using propane. tubing in concealed locations. The requirements for weather- resistant grommets is applicable to exterior walls where weather might become a factor in durability of tubing systems.

Table 8-5.4 Maximum Capacity of Different Sizes of Pipe and Tubing in Thousands of Btuh of Natural Gas for Gas Pressures of 0.5psig or Less, and a Maximum pressure Drop of l/2-1n. Water Column

Iron Pipe Sizes-Length...

Corrugated Stainless Steel Tubin~-LenLrth*

ErlD In l0 20 30 4O SO 6O 7O 80 9O 100

13 3/8 in. $1 21 17 14 13 12 11 10 10 9 15 3/8 in. 42 30 24 20 18 J.O. 15 14 13 12 18 1/2in. 79 56 45 39 36 .~ 30 28 '27 25 1~ 1/2in. 91 64 52 45 40 3fi 35 32 31 29 2.~ 3/4 in. 155 111 92 80 72 65 60 58 55 52 25 3/4 in. 184 132 108 93 84 77 71 66 62 60 30 1 in. 317 .~ 180 156 lg8 126 116 108 log 97 31 1 in. 368 258 209 180 161 147 155 127 120 113 32 1 1/4 598 4~6 sso so4 22~ ~0 2~ 217 205 195 in. *Includes losses for four 90 dearee bends and two end fittings. Tubin~ runs with lar~er numbers of bend and/or fittings shall be increased bv an eauivalent len~th of tubina accordina to the followin~ eouatlon L=l.3n. where L is anal lenl~th (ft~ of mbln~ and n is the number of additional flttin~s an-d/or b¢Ods. **EHD -- Eauivalent_ Hydraulic Diameter -- A measure of the hvdraulic efficiency between different tubin~ sizes.

373 NFPA 501 -- MAY 2000 ROP

COMMITTEE ACTION: Accept in Principle in Part. VOTE ON COMMITTEE ACTION: Revise 8-5.8 as follows: AFFIRMATIVE: 12 8-5.8 Concealed Tubing. CopperT-_mbing shall not be run inside walls, floors, partitions, or roofs. Corrugated stainless steel tubing (CSST~ shall be nermitted to be run inside walls, floors. (Log #155) Committee: MAN-MEC nartitions and roofs when urotected from accidental nuncture bv a 501- 151 - (8-5.12.2 [$280.705(1)(2)]): Reject steel striker barrier not less than 0.0508 in. (1.3 mm) thick, or SUBMITTER: James A~ Ranfone, American Gas Assn. equivalent, installed between the tubing and the finished wall and RECOMMENDATION: Revise text as follows: that ext¢l~ds at least 4 in. {10 cm) beyond concealed nenetrations 8-5.12.2 Appliance Connections. All gas-burning appliances Of plates, fire stops, wall studs, etc.. and where the tubing is shall be connected to the fuel piping. Materials such as those installed in single runs and not rigidly secured, or as sne~ified by rovided in 8-5.2 or listed appliance connectors shall be used. the tubing manufacturer's installation instructions. Where tubing ~ isted appliance connectors, when used, shall not run through passes through exterior walls, floors, partitions, roofs, or similar walls, floors, ceilings, or partition, except for cabinetry, and shall be g6ft (0t-4 1830 mm) or less in length or, ~n tF.c ~=c ~.f c~e.!-ng ...... ¢onstrucuon, such tubing shall be protected by the use of weather-resistant grommets that shall fit snugly both the appl!a=cz=, ~...... ff (]o~O ~--x ~ ...... ^- ~^-- Aluminum connectors shall tubing and the hole through which the tubing passes. not be used outdoors. A manufactured home containing a combination LP-Gas and natural gas system shall be permitted to COMMITTEE STATEMENT: The committee is not comfortable with permitting copper tubing in concealed spaces. CSST can be be provided with a gas outlet to supply exterior appliances, when permitted subject to the protection criteria in NFPA 54, National installed in accordance with 8-5.12.2.1 through 8-5.12.2.4. Fuel Gas Code, which has been repeated here for clarity. SUBSTANTIATION: The change allows use of appliance NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 connectors of 6 ft or less for all appliances consistent with ANSI VOTE ON COMMITTEE ACTION: Z22$.l/NFPA 54. No safety or operability issues are associated AFFIRMATIVE: 11 with connectors that necessitate the 3 ft or less limitation currently NEGATIVE: 1 in the standard. EXPLANATION OF NEGATIVE: COMMITTEE ACTION: Reject. HALLIWILL: It is my understanding LC-1 was developed for the COMMITTEE STATEMENT: The committee is not convinced installation of piping systems in conventional buildings. No there is any compelling reason to change the current provision. evidence was gnven to show this standard is applicable to this form Excessive lengths of connectors could pose hazards where they do of construction. not appear to be necessary. COMMENT ON AFFIRMATIVE: NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 WALTER: I agree with the Comment on Affirmative by Zieman. VOTE ON COMMITTEE ACTION: The proposal needs editorial clarification. I recommend the AFFIRMATIVE: 12 wording as proposed by Zleman in his Comment on Affirmative. ZIEMAN: This proposal needs editorial clarification. Most of the wording used here was lifted from NFPA 54, Section 3.4.4(a) (Log #156) and (b). I believe the proposal should be editorially changed to Committee: MAN-MEC an (a) and (b) format as found in NFPA 54. 501- 152 - (8-5.12.3 [3280(!)(3)]): Reject Leave the first sentence as is. After the first sentence it should SUBMITTER: James A. Ranfone, American Gas Assn. read something like the following:. Corrugated stainless steel RECOMMENDATION: Revise text as follows: tubing (CSST) shall be permitted to be run inside walls, floors, 8-5.12.3 Valves. A shutoff valve shall be installed in the fuel partitions and roofs when: piping at each appliance inside the manufactured home structure, (a) Protected from accidental puncture by a steel striker barrier upstream of the union or connector, in addition to any valve on not less than 0.0508 inch (1.$mm) thick, or equivalent, installed the appliance, and shall be e arranged so as to be accessible for between the tubing and the finished wall and that extends at least 4 the servicing of the appliance and removal of its components. The inches (10cm) beyond concealed penetrations of plates, fire stops, shutoff valve shall be e located within 6 ft (1830 mm) of a c~.k'ng wall studs, etc., or as specified by the tubing manufacturer's ^~,:~ ...... j ...... a ...'.~.:- 9 c. (91A----xIlllla / ut^c ...... all] ..... ~'^~ each appliance. installation instructions, and A shutoff valve shall be permitted to serve more than one (b) The tubing is installed in single runs and not rigidly secured. appliance if located in accordance with these requirements. The last sentence ("Where tubing passes...") leave as is. Shutoff valves shall be e of the non displaceable rotor type and conform to ANSI Z21.15, Manually Operated Gas Valves. SUBSTANTIATION: The change allows use of valves within 6 ft or less for all appliances consistent with ANSI Z223.1/NFPA 54. (Log #152) No safety or operability issues are associated with valves that Committee: MAN-MEC necessitate the 3 ft or less limitation currently in the standard. 501- 150 - (8-5.9 [3280.705(i)]): Reject COMMITTEE ACTION: Reject. SUBMITTER: James A. Ranfone, American Gas Assn. COMMITTEE STATEMENT: There is no need for the proposed RECOMMENDATION: Revise text as follows: change given the Committee Action on Proposal 501-151 (Log 8-5.9 Concealed Joints. Piping ~r .'u~!ngj~!n~ ~hal! n~t ~c #I55). NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 ...... : ...... When ~as ninin~ that is to be concealed is VOTE ON COMMITTEE ACTION: being installed, unions, tubin~ fitting, running threads, right and AFFIRMATIVE: 12 left counlings, bushings, swing joints, and comnression couplings made bv combinations of fittings shall not be used. Pine fittings such as elbows, tees. and counlings shall be permittedto be used. (Log #154) Excemion No. 1: loining tubin~ bv brazing shall be nermitted. Committee: MAN-MEC Excention No. 2: ~ttin~rs listed-for use in concealed spaces that 501- 153- (8-5.12.7 [$280.705(I)(7)]): Reject have been demonstrated to sustain, without leakage, any forces due SUBMITTER: James A. Ranfone, American Gas Assn. to temnerature exnansion or contraction, vibration, or fati~rue RECOMMENDATION: Revise text as follows: based on annlication or oneration shall be nermitted to be used. 8-5.12.7 Hangers and Supports. All gas piping shall be adequately supported by galvanized or equivalently protected metal SUBSTANI"[ATION: The change permits the use of concealed joints consistent with ANSI Z223.1/NFPA 54 and uses the straps of hangers at intervals of no more than 4 ft (1220 mm). Solid iron-pipe gas supply connection(s) shall be rigidly anchored appropriate text of that standard. Field experience has shown that to a structural member within 6 in. (152 mm) of the supply the use of concealed joints consistent with ANSI Z223.1/NFPA 54 is safe and reliable. connection(s). COMMITTEE ACTION: Reject. Exception: P,,~crc =.~c-u=': zupF~rt ~'=d prvtcc~.'= =z prc-'dcd COMMITTEE STATEMENT: The proposal is rejected at the -7 =tructura..~..e.~.._e~. ~-l~ere support is provided consistent with request of the subilfitter's representative. AGA intends to submit Section %8.3.2. [$280.608(c) (2)] an alternate proposal at a later time. SUBSTANTIATION: The change to the exception references NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 more specific language found ~lsewhere in the standard. COMMITTEE ACTION: Reject.

374 NFPA 501 ~ MAY 2000 ROP

COMMITTEE STATEMENT: The committee believes the existing exception permits field installation of appliances in locations performance-based exception adequately addresses the support of isolated from the indoor environment. The exception would gas piping. bpermit the use of listed appliances currently prohibited simply NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 ecause they are not listed for use in manufactured homes (e.g., VOTE ON COMMITTEE ACTION: outdoor water heaters). The exception would remove an AFFIRMATWE: 12 impediment to the adoption of such technology. COMMITTEE ACTION: Reject. COMMITTEE STATEMENT: Field installations are not within the scope of this standard. (Log #181a) NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 Committee: MAN-PLU VOTE ON COMMITTEE ACTION: 501- 154- (8-5.12.8.1 and 8-5.12.8.2 [3280.705(I)(8)0) and AFFIRMATIVE: 12 ~280.705(1) (8) (ii)]): Reject TCC NOTE: The Technical Correlating Commitiee on Manufactured Housing (MAN-AAC) directs that a public comment be submitted in the Correlating Committee's name (Log #3) requesting that the Technical Committee on Mechanical for Committee: MAN-MEC Manufactured Housing (MAN-MEC) review this proposal. This 501- 157 - (8-7.1.2 [3280.707(a) (1) (ii) ] ): Accept in Principle in proposal was inadvertently assigned to the Technical Commlttee Part on Plumbing for Manufactured Housing which does not have SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) jurisdiction on this section of NFPA 50L RECOMMENDATION: Revise Section 8-7.1.2 to read as follows: SUBMITTER: Dan Butterfield, Fleetwood Enterprises Inc. 8-7.1.2 Gas and oil burning comfort heating appliances shall RECOMMENDATION: Add the following new text: have ~n Ann~al Fuel Utilization Efficiency of not less than 75 "Test shall be reconducted when reoair work occurring in the a fl'ae !~-~z c.f ::c: mere ~^.~ 25 perecn:, and vicinity of tested system has the uotential to damage system." .t.~ .~._--~, ^~-=.^:...... c ~. ,^.. ,t.^_ .t...... :~^'~ in the National SUBS;rANTIATION: Will improve quality of product, reduce Appliance Energy Conservation Act of 1987. nate=~dly ree:g:.:zc~ service/warranty costs and improve customer satisfaction. COMMITTEE ACTION: Reject. SUBSTANTIATION: The National Appliance Energy COMMITTEE STATEMENT: The proposal is vague and will Conservation Act of 1987, S.83-9(f), standards for furnaces, has create difficulty in the manufacturing and enforcement raised minimum efficiency levels and eliminated all previous community. The term "vicinity" is not defined and open to diverse efficiency descriptors such as flue loss, thus, making obsolete this interpretation. Pcaragraph as previously stated. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6 OMMITTEE ACTION: Accept in Principle in Part. VOTE ON COMMITTEE ACTION: Revise 8-7.1.2 as follows: AFFIRMATIVE: 6 8-7.1.2 Gas and oil burning comfort heating appliances shall have ~n Annual Fuel Utilization Efficiency. of not less than as specified ~ flu= !e:: cf net m.~rc ~z=: 2~ percent, =:~ ~e ~.c_-:..a! c~e'e.-;~%' cf .-~t lc~ t.ha.'z "..~:t :pee-qe~ in the National Appliance (Log #GP405) Committee: MAN-MEG EnerKy Conservation Act. na'.J~.=a!l)" reccgn'--.e~-.:LT.=z~ard4.:-. (See 501- 155.- (8-6.10): Accept SecSc.n ~ ~). SUBMITTER: Technical Committee on Mechanical for COMMITTEE STATEMENT: The committee actions are intended Manufactured Housing for editorial clarification and should meet the submitter's intent. ] RECOMMENDATION: Revise 8-6.10 as follows: NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 I 8-6.10 Testing f2r Lemkzge Tag. A tag qhall be afflxe0 to the til- VOTE ON COMMITTEE ACTION: l fired appliance(s) statin~ " Before setting the system in operation, AFFIRMATIVE: 12 I tank installations and piping shall be checked for oil leaks with I fuel oil of the same grade that will be burned in the appliance. No [ other material shall be used for testing fuel oil tanks and piping. ] Tanks shall be filled to maximum capacity for the final check for (Log #159) Committee: MAN-MEC I oil leakage." 501- 158 - (8-7.1.2 [3280.707(a)(2)]): Accept in Principle SUBSTANTIATION: The testing of the appliance occurs on site SUBMIXTER: James A. Ranfone, American Gas Assn. and is not within the scope of the standard. However, the RECOMMENDATION: Revise text as follows: committee believes the requirement for a tag applied to the Gas- and oil-burning comfort beating appliances shall hz-'e a flue appliance describing the test is advisable. COMMITTEE ACTION: Accept...... v ...... ~ .... ~ ...... comply NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 with the efficiencv reauirernents of 10 CFR Part 430. VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 12 SUBSTANTIATION: The change references regulatory requirements for appliance efficiency promulgated under NAECA. The current language is inconsistent with these NAECA preemptive requirements for appliance efficiency. (Log #157) COMMITTEE ACTION: Accept in Principle. Committee: MAN-MEG See Committee Action on Proposal 501-157 (Log #3). 501-156- (8-7.1 Exception (New) [3280.707(a)]): Reject COMMITTEE STATEMENT: The Committee Action on Proposal SUBMITTER: James A. Ranfone, American Gas Assn. 501-157 (Log #3) should meet the submitter's intent. RECOMMENDATION: Add a new Exception to read as follows: NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 8-7.1 Heat-producing appliance and vents, and the roof jacks VOTE ON COMMITTEE ACTION: and chimneys necessary for their installation in manufactured AFFIRMATIVE: 12 homes, shall be listed or certified by a nationally recognized testing agency for use in manufactured homes. E~¢eption: Where listed 9r certified heat-oroducing appliances (Log #160) ~nd vents are field installed and installed in'accordance with Committee: MAN-MEC Section 8-9.4(b~ and the anoliance installation instructions, lisdn~ 501- 159- (8-7.4 [3280.707(d)]): Accept in Principle 9r certification for use in manufactured homes is not reouired. SUBMITTER: James A. Ranfone, American Gas Assn. SUBSTANTIATION: Safety-related listing and certification RECOMMENDATION: Revise text as follows: requirements for appliances for use in manufactured homes are 8-7.4 Performance Efficiency. All automatic storage water intended to maintain combustion system integrity and safety during beater~ shall comply with the efficiency reauirements of 10 CFR transportation to the house site. The exception provides Part 430. protection of housing occupants without requiring specially listed o 7.C1 .A2!autc.ma:~c e!eet.-c =to.rage ":,~tcr ~eatem "n~"'~lle~ !n or certified appliances, which can be costly to consumers. The

375 NFPA 501 -- MAY 2000 ROP

"8-8.3(a)...can be removed by the use of common household .....l =+ x ...... z --- / ...... ~o+ I"~+ ++~--Ag--, I .... k~ll k^ --..4 .... :k+A :-- ,I~+++:~+ J • 1 ^4" AkT¢l tools (~ch as blade, souare slot. or Phillips head screw drivers)...... y ...... = o ...... The cap...". Q ,'7 A O All ..... A ~;I g":-^A ~..+^~--+-++ .+ ...... +--. I~+~-- ^l..~nl SUBSTANTIATION: Reason: To clarify which type of screws can be used in the factory. COMMITTEE ACTION: Reject. be ~ dcacribed in Section 2.7 cf b~.~SI Z2!.!0.1, C--z Water COMMITTEE STATEMENT: It is not possible to list all types of household tools that might be permitted. The term should be self- explanatory. • ~, ...... i +, , ...... AK.T~T '701 1~ lk NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 12

D ...... (Log #20) ...... jr Committee: MAN-MEC im,+~___ 6-. .... ;~. 1P g'£~..: .....

l .....f~--ll 501- 161 - (8-9.3.2(c) [3280.709(2)(iii)]): Reject 4-~ SUBMITTER: Kurt Pugh, State of Oregon RECOMMENDATION:. Delete this requirement in its entirety. At lz~t 75 Net mcrc ~".an 7.5 Fcrcent SUBSTANTIATION: The intent of this was when these compartments did not have fire stopping and flame spread Net msre +~.+.-~-7 ~ercent requirements a small warning label is not going to keep a [l'~q T \ homeowner from storing material in these areas if they want to. O0 kl~ m,crc *K--~ g i ~ .... u~ COMMITTEE ACTION: Reject. COMMITTEE STATEMENT: The provided substantiation is not correct. There is still a concern about the ignition of SUBSTANTIATION: The change references regulatory combustibles stored in such compartments. requirements for appliance efficiency promulgated under NAECA. NUMBER OF COMMITTEE MEMBF_J~ ELIGIBLE TO VOTE: 12 The current language is inconsistent with these NAECA preemptive VOTE ON COMMITTEE ACTION: requirements for appliance efficiency. AFFIRMATIVE: 12 COMMITTEE ACTION: Accept in Principle. Revise 8-7.4 as follows: 8-7.4 Performance Efficiency. All automatic storage water heaters shall comply with the efficiency reouirements of the (Log #163) National Appliance Energy Conservation ,~ct. Committee: MAN-MEC 8 7.4.1 /2! :'.:tcma*dc c!cc+~c ztc.mgc "~tcr hcatc~ "=~+^--!c~ ~: 501- 162- (8-9.4 [3280.709(d)]): Reject SUBMITTER: James A. Ranfone, American Gas Assn. RECOMMENDATION: Revise text as follows: 8-9.4 All fuel-burning appliances shall be installed to provide for C72.1, Houzcho!d Autc:nadc Electric Storage T~c Watcr Heater:. the complete separation of the combustion system from the interior atmosphere of the manufactured home. Combustion air inlets and flue gas outlets shall be listed or certified as components ha ...... • 7 ...... 1, ,+1 ...... ~w .... , ,01 -'- accordance ::'hh Tab!s B 7A.2. T!:e me+&sd sf feet of E and S :ka!! of the appliance. The required separation shall be permitted to be be -~ dczz-bcd in Section 2.7 of b~JS! Z21.!O.!, C-~ Water obtained by the following: "(a) The installation of direct-vent system /~.~f^a ~+.,,~+:^~ appliances; or...". SUBSTANTIATION: "Sealed combustion" represents a specific ...... A~TCITc)I ~+ ...... ln~.,zxzcptthatC^.^:~..~ ...... ,...:+. cc = +.+,~ n .~=,^+~.... gallon+ cf c!! conc.:mc~ and H = to.m! heating "+~'.:c cf c!! :.n category of equipment under the relevant consensus standards (ANSIZ21/Z83). "Direct-vent" is not equivalent terminology. Currently, ANSI standards for "sealed combustion" gas equipment

T+kl~ Q "7 I O D ...... IP~",IPI.+: .... are inactive, and listed equipment of the "sealed combustion" type is not available in the marko. COMMITTEE ACTION: Reject. D ...... COMMITTEE STATEMENT: Sealed combustion systems are still in use, and the term still applies• NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 ...... ++'++= +'0 I-" .... ~'+ VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 12

00 ...... t+ ...... +'1 czc~ T \ 00 Not marc tkan ~ percent (Log #162) COMMITTEE STATEMENT: The committee action is intended Committee: MAN-MEC for editorial clarification and should meet the submitter's intent. 501- 163- (8-9.5.1 [3280.709(e)(1)]): Reject NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 SUBMITTER: James A. Ranfone, American Gas Assn. VOTE ON COMMITTEE ACTION: RECOMMENDATION: Revise text as follows: AFFIRMATIVE: 12 8-9.5.1 The air-circulating fan of a furnace installed in an enclosure with another fuebburning appliance shall be operable only when any door or panel covering an opening in the furnace fan compartment, or in a return air plenum or duct, is in the (Log #179) closed position. Committee: MAN-MEC Exception: This requirement shall not apply if both appliances 501-160- (8-8.2(c) and 8-8.3(a) [3280.708(b)(3) and are direct-vent system t~,~ ~--k...,: ..... +~--x appliances. 3280.708(c) (1) ]): Reject SUBSTANTIATION: "Sealed combustion" represents a specific SUBMITTER: Bill Farish, Fleetwood Homes category of equipment under the relevant consensus standards RECOMMENDATION: Revise both places to provide an (ANSI Z21/Z83). "Direct-vent" is not equivalent terminology. explanation of "household tool": Currently, ANSI standards for "sealed combustion" gas equipment "8-8.2(c)...can be removed by a common household tool lsuch are inactive and listed equipment of the "sealed combustion" type as a blade, square slot or Phillins head screw driver), shall be is not available in the market. provided. The cap...". COMMITTEE ACTION: Reject.

376 NFPA 501 m MAY 2000 ROP

COMMITTEE STATEMENT: Sealed combustion systems are still comparunent allows the floor sheeting to deteriorate. The weight in use, and the term still applies. of the water heater will allow it to fall through the floor, either NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 breaking the gas line causing a fire or allowing the exhaust stack to VOTE ON COMMITTEE ACTION: disconnect and permit dangerous fumes to filter into the home. AFFIRMATIVE: 12 An electric water heater falling through the floor will cause an electric short and resulting fire. Water dripping/running on the water heater compartment floor sheeting circulates into the (Log #158) surrounding home areas, working into the gypsum wall panels, Committee: MAN-MEC deteriorating and/or warpin.~ the surrounding area floor sheeting 501- 164- (8-9.5.6 [3280.709(e)(6)]): Reject and ruining carpet and padding covering the floor sheeting. SUBMITTER: James A. Ranfone, American Gas Assn. Flooring insulation and bottom barrier material cab become RECOMMENDATION: Revise text as follows: saturated, gather mildew and even fall to the ground from the "8-9.5.6 When an external hezt=g h¢~Fnroducing appliance, weight of the water. In many instances, the home becomes combination snace heatin~ and water heatin~ anoliance, or uninhabitable as a result of this water leakage. combination cooling/heating appliance is tobe field-installed, the COMMITTEE ACTION: Accept in Principle. home manufacturer shall make provisions for the proper location Accept the proposal as modified by replacing the word "suitable" of the connections to the supply and return air systems. The with "a." manufacturer shall not be required to provide the cooling/heating COMMITTEE STATEMENT: The term suitable is not appliances. Provisions for connection to the home's supply and enforceable. return air systems made by the manufacturer shall include all NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 fittings and connection ducts to the main duct and return air VOTE ON COMMITTEE ACTION: system such that the installer is only required to provide the AFFIRMATIVE: 11 following:...". NEGATIVE: 1 SUBSTANTIATION: The change clarifies the coverage of the EXPLANATION OF NEGATIVE: provision for all heat-producing appliances and adds combination HALLIWILL: Change language to read: space heating and water heating appliances, which are defined in 8-9.8 A listed corrosion resistant water drip collection and drain ANSI/AHSRAE 124. pan shall be installed under each water heater that will allow water COMMITTEE ACTION: Reject. leaking from the water heater to drain to c'~hcr ~c uz=a~cm'dc cr COMMITrEE STATEMENT: The proposed language the exterior of the manufactured homes, cr =u'~b!c dm:.:. incorporates extensive changes which do not fit in the proposed Reason: IAS and other listing agencies have developed standards location. The submitter might consider drafting a comment for a for these products. The drain termination must he in the open so new section specifically addressing combination systems. the owner can see if the tank is leaking. NUMBER OFCOMMrrTEE MEMBERS ELIGIBLE TO VOTE: 12 VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 12 COMMENT ON AFFIRMATIVE: (Log #17) STILLWAGGON: Recommend acceptance of this proposal. Committee: MAN-MEC Proposals have been submitted for this edition of the code whicli 501- 166 - (8-11 [3280.711]): Accept in Principle reference combination space heating and water heating SUBMITTER: Kurt Pugh, State of Oregon appliances. This change simply adds the definition to this RECOMMENDATION: Revise text to read: particular section. "Operating instructions shall be provided with each appliance. All oneratin~ and installation instructions will be out in the homeowners nacket." SUBSTANTIATION: At the present time, in most cases all the (Log #78) instructions are left on the appliance. In the case of a water Committee: MAN-MEC heater, they are usually taped to the side and the appliance is in a 501- 165 - (8-9.8 (New) [3280.709(h), New] ): Accept in Principle closed compartment. This is the same for the furnace. Most SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) homeowners never know they are there. RECOMMENDATION: Add a new Section 8-9.8 to read as COMMITTEE ACTION: Accept in Principle. follows: Revise Section 8-11 as follows: 8-9.8 A corrosion resistant water drip collection and drain nan 8-11 Instructions. Operating instructions shall be provided with shall be installed under each water heater that will allow water each appliance. All ooeratin~ and installation instructions shall be leaking from the water heater to drain to either the underside or provided with the homeowner's manual. the exterior of the manufactured homes, or suitable drain. COMMITTEE STATEMENT: The committee actions are intended SUBSTANTIATION: This recommended change was originally for editorial clarification and should meet the submitter's intent. submitted to HUD by the MHCSS Consensus Committee on 12-29- NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 94, but no action has been taken. Water heater manufacturers VOTE ON COMMITTEE ACTION: recommend that a drain pan be installed under water heaters AFFIRMATIVE: 12 when they are not positioned on a concrete floor near a drain. The present NFPA 501 does not require a drain pan under water heaters or that the water heater compartment be built in a protective manner such as a shower stall that would provide a (Log #4) method for water to drain outside the home. The drain pan could Committee: MAN-MEC be constructed from aluminum or ABS plastic. Materials presendy 501- 167 - (8-14.1.1.1 [3280.713(a)(1)(i)] ): Accept in Principle utilized in the construction of the water heater comparunent, such SUBMITrER: Frank Walter, Manufactured Housing Inst. (MHI) as wood products, gypsum, polybutylene water lines and electrical RECOMMENDATION: Revise Section 8-14.1.1.1 to read ,as wiring, presently withstand the heat produced by both gas and follows: electric water heaters. The use of aluminum or ABS plastic for 8-14.1.1.1 Electric motor-driven unitary air-cooled air water heater pan would not be a fire hazard. conditioners and heat pumps in the cooling mode with rated The pan could have a separate drain hole and pipe or allow capacity less than 65,000 Btuh (19045 watts), when rated at ARI drainage through/alongside the gas furnace combustion air intake standard rating conditions in ARI Standard 210/240, Unitary Air pipe. Either method would have a pipe extending downward from Conditioning and Air Source Heat Pump Equipment, shall have the pan, through the floor or wall systems that would allow leaking seasonal energy efficiency (SEER) values not less than 10 for split water access to the exterior of the home, thus eliminating the systems and 9.7 for single package systems previously mentioned hazards and homeowner inconveniences and National Annliance Enere-v Conservation Act of 1987. improve the function and the image of the manufactured home SUBSTANTIATION: The National Appliance Energy product. Conservation Act of 1987, S.83-7,8(d) standards for central air The drip collection and drain pan would preserve the durability conditioners and heat pumps, has minimum efficiency levels. A of the home, increase homeowner safety and lessen homeowner reference should be provided indicating that the SEER values are inconvenience. The protection provided by the drip collection as specified in the National Energy Conservation Act of 1987. and drain pan would reduce insurance costs and property damage to manufactured homes. Water leakage in the water heater

377 NFPA 501 -- MAY 2000 ROP

COMMITTEE ACTION: Accept in Principle. COMMITTEE STATEMENT: The NAECA Act specifies the Revise 8-14.1.1.1 as follows: required efficiency criteria, therefore, it is not necessary to repeat 8-14.1.1.1 Electric motor-driven unitary air-cooled air them in the standard. conditioners and heat pumps in the cooling mode with rated NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 capacity less than 65,000 Btuh (19045 watts), when rated at ARI VOTE ON COMMrVrEE ACTION: standard rating conditions in ARI Standard 210/240, Unitary Air AFFIRMATIVE: 12 Conditioning and Air Source Heat Pump Equipment, shall have seasonal energy efficiency (SEER) values not less than IO for ~v..~-~':" z)'ztcmz a==~ 9.7 f~r z!ng!c packagc z)~tcmz as specified in the National Annliance Eneraw Conservation Act. (Log #169) COMMITTEE STATEMENT: The NAECA Act specifies the Committee: MAN-MEC required efficiency criteria, therefore, it is not necessary to repeat 501- 169- (8-14.1.1.2 [3280.714(a)(1)(ii)]): Reject them in the standard. SUBMITTER: James A. Ranfone, American Gas Assn. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 RECOMMENDATION: Revise text as follows: VOTE ON COMMITTEE ACTION: 8-14.1.1.2 Air-cooled heat pumps in the heating mode shall be AFFIRMATIVE: 12 certified to comply with all the requirements of ARI Standard 210/240, Unitary Air Conditioning and Air Source Heat Pump Equipment, with HSPF efficiencies of not less than 6.8 for split systems and 6.6 for single package systems. Electric motor-driven (Log #5) vapor compression heat pumps with supplemental electrical Committee: MAN-MEC resistance heat shall be stzed to provide by compression at least 60 501- 168 - (8-14.1.1.2 [3280.713(a)(1)(ii)]): Accept in Principle 90 percent of the calculated annual headng requirements for the SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) manufactured home being served. A control shall be provided RECOMMENDATION: Revise Section 8-14.1.1.2 to read as and set to prevent operation of supplemental electricalresistance follows: heat at outdoor temperatures above 40°F (4°C), except for defrost 8-14~ 1~1 2 A:.... ,~.~ u ...... :_ .~.^ t.~.: .... a^ .h~. t.^ operation. SUBSTANTIATION: The current language permits the use of a 6.8 Btu/(watt hr) HSPF electric beat pump sized such that 40 percent of the oUtput is provided by electric resistance heat =;.'=tcm~ :.=~ 5.5 fc.r fng!c F:c!~gc :):=:m..;. Heat pumps shall be yielding an installed performance of 4.48 Btu/(watt hr) certified to comnlv with all the reouirements of the AR/Standard [0.4"1+0.6"6.8] which is 34 percent below the NAECA minimum. 210/'240-89. Uni-tarv Air Conditionin~ and Air-Source Heat Pumn Allowing such undersizing results in the over-reliance on resistance Eouipment. Electric motor-driven vapor compression heat pumps beat, and increased operating cost to the homeowner for such a system. The DOE procedure indicates that operation below the with supplemental electrical resistance heat shall be sized to design temperature typicallyoccurs less than 10 percent of the time provide by compression at least 60 percent of the calculated (10 CFR Part 430, Subpart B, Appendix M, 6.2.4. In that section annual heating requirements for the manufactured home being the design temperature(s) and the time spent at temperatures served. A control shall be provided and set to prevent operation of above and below the design temperature m 5°F intervals supplemental electrical resistance heat at outdoor temperatures ("temperature bins") are provided. The proposed change would above 40°F (4°C), except for defrost conditions. Electric mo~9[- encourage the sizing of beating equipment to meet the heating driven vanor comoression heat numns with sunnlemental electric load. Ninety percent is consistent w~th the design temperatures resistance heat conformin~ to ARI Standard 210/$40-89, Unitary and time/temperature profiles used to rate equipment. Air Conditionin~ and Air-Source Heat Purnn Eauinment. shall COMMITTEE ACTION: Reject. have HSPF efficiencies of not less than 6.8 for snlit systems and (i,0 COMMITTEE STATEMENT: The proposal would result in for single nacka~e svstems. oversizing equipment and would severely limit the use of heat SUBS'I~ANfTIATION: Presently, the NFPA 501 Standard covers pumps. The committee does not have sufficient technical requirements for air-cooled heat pumps and electric motor-driven justitlcation to accept theproposal. vapor compression heat pumps with supplemental heating. The NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 current text specifies HSPF efficiency values for only air-cooled VOTE ON COMMITTEE ACTION: equipment of 6.8 for split systems and 6.6 for single package AFFIRMATIVE: 11 systems. This change will reference the ARI Standard 210/240 for NEGATIVE: 1 the HSPF efficiency values for air-cooled heat pumps. The EXPLANATION OF NEGATIVE: National Appliance Energy Conservation Act of 1987, S-85-7, 8(d) HEIMAN: While the proposal to increase the operation of the standards for central air conditioners and heat pumps, have heat pump so that resistance heating is used only 10 percent of the minimum efficiency levels. The Heating Seasonal Performance time puts an unrealistic limitation on the use of heat pumps, Factors (HSPF) for electric motor-driven vapor compression heat leaving the standard at the presently allowed 40 percent is even pumps should be listed for these appliances to coincide with the more unreasonable. Many other building codes and standards National Appliance Energy conservation Act. These HSPFs need provide for realistic pump to resistance heating ratios and the to be included for proper performance-based requirements for proposal should be kept on the agenda of the Mechanical manufacture.d homes. Committee. COMMITTEE ACTION: Accept in Principle. Revise 8-14.1.1.2 as follows: 8-14 1~1 2 A:.... ~^.~ t...... :_ .u~ t.^~,: .... .~^ .u^,, ~._ ...... t" .... t" ...... ~ ...... (Log #167) ...... t"'l ...... "1 ...... =~ Committee: MAN-MEC -=~/-- .... , ..... 1 ...... ~ ...... l" 501- 170- (8-14.2.1 [3280.714(b)(1)]): Reject ~TZtC~.~ ~-~..... zr ~!ng,c ~z~c ~)~=cm~. Heat pumps shall be SUBMITTER: James A. Ranfone, American Gas Assn. certified to comolv with all the reouirements of the ARI Standard RECOMMENDATION: Revise text as follows: 8-14.2.1 The installation of each appliance shall conform to the 210/240-89. Uni'~rv Air Conditionin~ and Air-Source Heat Pumn terms of its hstmg" " ~..... ~v ...... :r.^~ ^_ .u^ ~l"t"^-~" ...... and in the Equipment. Electric motor-driven vapor compression heat pumps manufacturer's instructions. The installer shall include the with supplemental electrical resistance heat shall be sized to manufacturer's installation instructions in the manufactured provide by compression at least 60 percent of the calculated home. Appliances installed bv the home manufacturer shall be annual heating requirements for the manufactured home being secured in place to avoid dJsl~lacement and movement from served. A control shall be provided and set to prevent operation of vibration and road shock. supplemental electrical resistance heat at outdoor temperatures SUBSTANTIATION: Terms of listing completely and adequately above 40°F (4°C), except for defrost conditions. covering installation are not required on the appliance under driven vanor compression heat oumns with sunolemental electric standards such as ANSI Z21 standards for gas appliances. Securing resistance heat conformin~ to ARI Standard 21-0-/240-89. Unitary of appliances should apply only to appliances installed by home Air Conditioning and Air-Source Heat Pump Equipment, shall manufacturer. Separate requirements are provided for field have HSPF efficiencies not less than as snecified in the National installed appliances (such as under Section 8-7). Annliance Ener~v Conservation Act. COMMITTEE ACTION: Reject.

378 NFPA 501 -- MAY 2000 ROP

COMMrVrEE STATEMENT: The committee believes important COMMITTEE ACTION: Reject. information provided on the label still applies. The proposed COMMITTEE STATEMENT: The proposed referenced ASHRAE added language is not needed as the standard only applies to the standard has not yet been published. manufacture of manufactured homes. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 NUMBER OF COMMITrEE MEMBERS ELIGIBLE TO VOTE: 12 VOTE ON COMMITTEE ACTION: VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 11 AFFIRMATIVE: 12 NEGATIVE: 1 EXPLANATION OF NEGATIVE: LUBLINER: I support this proposal based on my experience with it as a voting member of ASHRAE TC 6-3 Central Residential (Log #CP406) Forced Air Heating and Cooling Systems which sponsors Standard Committee: MAN-MEC 152. This standard has been voted out the Standard 152 committee 501- 171 - (8-15.1.1): Accept and is currently under trial use. In the Pacific Northwest and TCC NOTE: The Technical Correlating Committee on Florida, the procedures and tools identified in Standard 152P for Manufactured Housing (MAN-AAC) directs that a public testing duct leakage rates, such as "duct-blasters" are currendy used comment be submitted in the Correlating Committee's name to determine the performance of ducted systems in manufacture requesting that the Technical Committee on Mechanical for homes. Duct-blasters are also used in the USEPA Energy Star Manufactured Housing (MAN-MEC) give consideration to Mr. Manufactured Housing Program. Pabian's comment onhis affirmative ballot. This proposal should be revised from a "shall" to a "should" and SUBMITTER: Technical Committee on Mechanical for be included in the 501 appendix as a complement to Proposal 501- Manufactured Housing 222 (Log #CP417). It is important for NFPA to have this proposal RECOMMENDATION: Revise 8-15.1.1 as follows: in the 501 appendix in the event that the Clinton administration 8-15.1.1 Supply air ducts, fittings, and anv dan'loers contained roposed tax credits for energy efficient housing are adopted and therein shall be made from galvanized steel, tin-t~lated steel, or ~ nergy Star manufactured homes are recognized as qualifying for aluminum, or shall be listed in accordance with UL 181. Factorv- those credits. Made Air Ducts and Connectors. Class 0. or Class 1 air ducts and air conncetors. Class 1 ~r ducts and air connectors shall be located at least 3 ft (914 ram/ from the furnace bonnet or nlenum. (Log #CP412) Air conneg~grs shall not be used for exterior manufactured home Committee: MAN-MEC duct conneqtion. A duct System integr'41 with the str~cture shall be 501- 174- (8-15.1.4): Accept of durable ¢9nstrnction that can be demonstrated to be euuallv SUBMITTER: Technical Committee on Mechanical for resistant ~0 fire and deterioration. D~¢ts constructed from sheet Manufactured Housing metal shall be in accordance with Table 8-15.1.1. i RECOMMENDATION: Revise 8-15.1.4 as follows: SUBSTANTIATION: The proposed revision more completely 8-15.1.4 Mrfightness of Supply Duct Systems. A supply duct describes the system components to be regulated. system shall be considered substantially airtight when the static COMMITTEE ACTION: Accept. pressure in the duct system, with all registers sealed and with the NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 furnace air circulator at high speed, is at least 80 percent of the VOTE ON COMMITTEE ACTION: static pressure measured in the furnace casing, with its oudets AFFIRMATIVE: 12 sealed and the furnace air circulator operating at high speed. For COMMENT ON AFFIRMATIVE: the purpose of 8-15.1 and 8-15.2, pressures shall be measured with PABIAN: The correct title of UL Standard 181 referenced in a water manometer or equivalent device calibrated to read in 8-15.1.1 is UL 181, Factory-Made Air Ducts and Air Connectors. increments not greater than 1/10 in. (50 Pa) water column. All The term "air" before connectors was omitted from the title of the duct desimas reauirin~ crossover duct olenums shall be tested with standard. the nlenum in place. SUBSTANTIATION: The proposal provides for testing multiple- unit width homes. Crossover duct plenums are often ignored as part of the air circulating system design. Provision must be made (Log #CP413) to ensure these plenums are sealed, designed to facilitate good Committee: MAN-MEC airflow, and insulated to limit heat loss and prevent mold 501- 172 - (8-15.1.2): Accept problems. SUBMITTER: Technical Committee on Mechanical for COMMITTEE ACTION: Accept. Manufactured Housing NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 RECOMMENDATION: Revise 8-15.1.2 as follows: VOTE ON COMMITTEE ACTION: 8-15.1.2 S!z!ng of Ductz for Hcat=ng. Duct Static Pressure Test. AFFIRMATIVE: 12 The duct static pressure test shall be performed after the system has demorlstrated compliance with ~-|5.1.4. SUBSTANTIATION: This section describes the duct static (Log #CP411 ) pressure test rather than duct sizing. The test will not be valid Committee: MAN-MEC unless the duct meets the criteria of the air tightness test. 501- 175 - (8-15.1.5.2): Accept Accept. COMMITTEE ACTION: SUBMITTER: Technical Committee on Mechanical for NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 Manufactured Housing VOTE ON COMMITTEE ACTION: RECOMMENDATION: Revise 8-15.1.5.2 as follows: AFFIRMATIVE: 12 8-15.1.5.2 Installation instructions for supporting, mechanically fastening, sealing, and insulating the crossover duct and crossover doer extension from the manufactured home shall be provided for (Log #128) on-site installation. Thc duc= zhz2! not bc in contact ;--'~h *~he Committee: MAN-MEC ground. Instructions shall caution the installer from allowing the 501- 173- (8-15.1.4 [3280.715(a)(4)]): Reject erO~Qver duct from being in contact with the ground and describe SUBMITTER: Max Sherman, Lawrence Berkeley Nat'l Lab means to suooort the duct without comoressing the insulation and RECOMMENDATION: Replace section with the following: ramd~m_aima~ "A supply duct system shall be at least 85 percent efficient as SUBSTANTIATION: The proposal provides additional details for measured with ASHRAE Standard 152 or shall have a measured duct installation instructions to assure correct installation. duct tightness not to exceed 4 percent of the designed air flow COMMITTEE ACTION: Accept. through at, at operating pressures." NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 SUBSTANTIATION: Leaky ducts are energy hazards. VOTE ON COMMITTEE ACTION: Techniques for measuring duct tighmess and duct efficiency have AFFIRMATIVE: 12 been developed that allow improved tightness to be demonstrated. The existing requirement is dependent on fan curves, leakage locations and measurement details not related to actual performance.

379 NFPA 501 -- MAY 2000 ROP

(Log #79) EXPLANATION OF NEGATIVE: Committee: MAN-MEC MIKEL: The negative vote was cast because I believe there was 501- 176 - (8-15.1.6 [3280.715(a)(6)]): Accept in Principle insufficient data presented that an increase in duct insulation to R- SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) 8 would significantly effect the duct discharge air temperatures at RECOMMENDATION: Revise Section 8-15-1-6 to read as follows: the registers. The wide use of insulated heat ducts within the floor 8-15.1.6 Air supply ducts shall be insulated with material having cavity of multi-wide homes would likely more than offset the an effective thermal resistance (R) of not less than 4, unless they proposed change of crossover duct R-valves. I believe the proposal are within manufactured home insulation having a minimum needs additional stud~,. effective value of R-4 for floors, or R-6 for ceilings. WALTER: I agree ruth the substantiation of a negative vote that Note: The intention is to separate the duct from the outside air was cast by John Mikel. I agree that the proposal needs additional by the stated R-value. study. SUBSTANTIATION: This recommended change was originally submitted to HUb by the MHC_~S Consensus Committee on 12-26- 90, but no action has been taken. Based on the work by consultant (Log #CP414) Emanuel Levy in hisJune 5, 1989 memo and cost data submitted Committee: MAN-MEC by Tom Eckman in his May 2, 1989 memo, these levels of 501- 178 - (8-15.2.1): Accept insulation are cost-effective within the appropriate TPS zone. The SUBMITTER: Technical Committee on Mechanical for cost data submitted by Tom Eckman yields the following numbers Manufactured Housing to be used with the table submitted by Levy I RECOMMENDATION: Revise 8-15.2.1 as follows: I 8-15.2.1 Return Air Openings. Provisions shall be made to I0" DIA DUCTS I permit the return of circulating air from all rooms and living [ spaces, except to'let room(:) bathrooms having an area less than Duct R-Value Cost/Linear Ft Cost/Ft2 Cost/Ft2/R I 90 sq-ft, to the circulating air supply inlet of the furnace. SUBSTANTIATION: larger bathrooms should have provisions to 5 0.587 0.224 0.0448 return air to the furnace. 8 1.056 0.403 0.0504 COMMITTEE ACTION: Accept. 11 1.933 0.738 0.0671 NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 COMMITTEE ACTION: Accept in Principle. VOTE ON COMMITrEE ACTION: Revise 8-15-1-6 as follows: AFFIRMATIVE: 12 8-15.1.6 Air supply ducts installed outside the thermal envelooe shall be insulated with material having an effective thermal resistance (R) of not less than 4, unless they are within (Log #126) manufactured home insulation having a minimum effective value Committee: MAN-MEC of R-4 for floors, or R-6 for ceilings. 501- 179 - (8-15.3 [3280.715(c)] ): Accept in Principle Add a new appendix note A-8-15.1.6: SUBMITTER: Max Sherman, Lawrence Berkeley Nat'l Lab A-8-15.1.6 This nrovision intends to seoarate the duct from the RECOMMENDATION: Add a sentence. outside air bv the-stated R-value. "Cloth backed, rubber adhesive tapes shall not be used." COMMITTEE STATEMENT: Explanatory material should be SUBSTANTIATION: Conventional duct tape has been shown to placed in Appendix A. New language added by the committee fail longevity tests. intends to further clarify the requirement. Despite a 200°F and/or a 181B-FX rating these products do not NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 work in hot environments. VOTE ON COMMITTEE ACTION: A specific exclusion is needed. AFFIRMATIVE: 11 COMMITTEE ACTION: Accept in Principle. NEGATIVE: 1 See Committee Action on Proposal 501-180 (Log #CP407). EXPLANATION OF NEGATIVE: COMMITTEE STATEMENT: The Committee Action on Proposal HEIMAN: Proposal number 501-176 (Log #79): ff Proposal 501- 501-180 (Log#CP407) should meet the submitter's intent. 177 (Log #CP410) has been accepted by the committee, Proposal NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 501-176 cannot be accepted in part because they both address the VOTE ON COMMITTEE ACTION: same subject. AFFIRMATIVE: 12

(Log #CP410) (Log #CP407) Committee: MAN-MEG Committee: MAN-MEC 501- 177- (8-15.1.7): Accept 501- 180- (8-15.3): Accept SUBMITI'ER: Technical Committee on Mechanical for TCC NOTE: The Techm'cal Correlating Committee on Manufactured Housing Manufactured Housing (MAN-AAC) directs that a public RECOMMENDATION: Revise 8-15.1.7 as follows: comment be submitted in the Correlating Committee's name 8-15.1.7 Supply and return ducts, fittings and crossover duct requesting that the Technical Committee on Mechanical for plenums exposed directly to outside air, such as those under Manufactured Housing (MAN-MEC) give consideration to Mr. chassis crossover ducts or ducts connecting external heating, Pabian's and Mr. Waiter's comments on their affirmative ballots. cooling, or combination heating/cooling appliances, shall be SUBMITTER: Technical Committee on Mechanical for ' insulated with material having a minimum thermal resistance of R- Manufactured Housing 4 in Thermal Zones 1 and 2. I n Thermal Zone 3. such materials RECOMMENDATION: 8-15.3 Joints and Seams. Joints and shall have a minimum thermal resistance of R-8 unless installed in seams of sheet metal and flexible metal ducts and fittings a basement. All such insulating materials shall have ;;5~. a including trunks, branches, risers, crossover ducts, and crossover continuous vapor barrier having a perm rating of not more than 1 duct plenums shall be =ecure! 7 f~-:~teneA-, mechanically secured penn. Where ducts are exposed underneath the manufactured and made substantially airtight. Slip joints shall have a ia~lp of at i home, they shall comply with 8-15.1.5.2, and shall be listed for least 1 in. (25 ram) and shall be individually fastened. Jape or exterior use. caulking compound shall be permitted to be used for sealing SUBSTANTIATION: The proposal adds requirements for mechanically secure joints .....'TA FI-. crc ::zc~,-4 mFecr c:=..-ng11

insulation to assure remote portions of the home are adequately ..... y ...... j ...... ~ ...... b heated (or cooled). Also, ducts exposed to outside air should be listed for exterior use. ,:_t_ t..._:.~: ...... : ...... :,.~ .... Sealants and taDes COMMITTEE ACTION: Accept. shall be applied only to surfaces that are dry. dust-, dirt-. 0il-, ~ud NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 crease-free. Sealants shall be listed under uL 181A-M and UI, VOTE ON COMMITTEE ACTION: i81B-M and used for the nurnose intended. Tanes for sheet metal AFFIRMATIVE: 10 ducts shall be eouivalent to IJL Classified General Use T~pcs with NEGATIVE: 2 oerformance characteristics eouivalent to 15ram butyl mastif backed with 2ram dead soft aluminum foil.

380 NFPA 501 -- MAY 2000 ROP

SUBSTANTIATION: The proposed revision clarifies the intent of (Log #CPS00) the committee, and adds provisions for using tape meeting Committee: MAN-ELE specified criteria to seal duct connections. 501- 183 - (Chapter 9): Accept COMMITTEE ACTION: Accept. TCC NOTE: The Technical Correlating Committee on NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 19 Manufactured Housing (MAN-AAC) directs that a public VOTE ON COMMITTEE ACTION: comment be submitted in the Correlating Committee's name AFFIRMATIVE: 12 requesting that the Technical Committee on Electrical for COMMENT ON AFFIRMATIVE: Manufactured Housing (MAN-ELE) give consideration to revising PABIAN: The changes to this paragraph limit joints and seams 9-3.1 l(c)(1) by placing the text "anchoring system ~ before to sheet metal and flexible metal ducts. Other types of flexible "permanent foundation s so that it reads: 1. The manufacturer ducts using a plastic core material encapsulated in a wire helix shall include in its written installation instructions information with or without a plastic jacketing are also utilized in indicating that the home shall be installed on and secured to an manufactured home duct systems as well as rigid fiberglass ducts. anchoring system or a permanent foundation. ~ The revision is Tapes and mastic closure systems for use with factory-made rigid for clarification purposes and to recognize the type of installation fiberglass air ducts and air connectors are listed in accordance that is primarily used and place it in'st. with UL 181 A while tapes and mastic closure systems for use with SUBMITTER: Technical Committee on Electrical for flexible factory-made air ducts and air connectors are listed in Manufactured Housing accordance with UL 18lB. RECOMMENDATION: Revise Chapter 9 as follows: UL Classified General Use Tapes have only been evaluated for Chapter 9 Electrical Systems surface burning characteristics and the tape's performance as to other characteristics relative to its use in metal ducts systems have 9-1 Scope. not been evaluated. Specific performance characteristics and 9-1.1 This chapter and PartA of Article 550 of NFPA 70, criteria were not included for evaluating tapes equivalent to mastic National Electrical Code, shall apply to the electrical conductors backed, aluminum foil tapes. Based upon the above comments and equipment installed within or on manufactured homes, and Proposal 501-180 should be revised as follows: the conductors that connect manufactured homes to a supply of "8-15.3 Joints and Seams. Joint and seams of sheet metal, electricity. factory-made rigid fiberglass, and factory-made flexible ducts 9-1.2 In addition to the requirements of this standard and Article including trunks, branches, risers, crossover ducts, and crossover 550 of NFPA 70, Nadonal Electrical Code, the applicable portions duct plenums shall be secured and made substantially airtight. of other articles of the National Electrical Code that cover Slip joints in sheet metal ducts shall have a lap of at least 1 inch electrical installations in manufactured homes shall be followed. (25mm) and shall be individually fastened. Tapes or caulking Wherever the requirements of this standard differ from the compounds shall be permitted to be used for sealing mechanically requirements of the National Electrical Code, this standard shall secure joints. Sealants and tapes shall be applied only to surfaces apply. that are dry, dust-, dirt, oil-, and .grease-free. 9-1.$ The provisions of this standard shall apply to manufactured Tapes and mastic closure systems for use with factory-made rigid homes intended for connection to a wiring system nominally rated fiberglass air ducts and air connectors shall be listed in 120/240 volts, 3-wire ac, with grounded neutral. accordance with UL Standard 181A. Tapes and mastic closure 9-1.4 All electrical materials, devices, appliances, fittings, and systems for use with factor~,-made flexible air ducts and air other equipment shall be listed or labeled by an approved testing connectors shall be listed m accordance with UL Standard 181B." agency and shall be connected in an approved manner when in WALTER: I agree with the Comment on Affirmative by Pabian. service. This proposal should be revised with the wording proposed by

Pabian, except that in the first sentence of his proposal the word ...... ~,..~: ...... a ...... t...... t'lg ...... *^~ ^l"'--:-"m .u~ ghall '~oint" should read '~Joints."

9-2 Definitions. The following definitions shall apply to Chapter 9 only. (Log #CP408) Accessible (as Applied to Equipment). Admitting close Committee: MAN-MEC approach; not guarded by locked doors, elevation, or other 501- 181 - (8-15.4): Accept effective means. (See definition of Readily Accessible.) SUBMITTER= Technical Committee on Mechanical for Accessible Wiring Methods. Capable of being removed or Manufactured Housing exposed without damaging the manufactured home structure or [ RECOMMENDATION: Revise 8-15.4 as follows: finish, or not permanently closed in by the structure or finish of [ 8-15.4 Supports. Ducts shall be securely supported. Nails shall the manufactured home. (See definitions of Concealed and [ not be driven through duct walls and unnecessary holes shall not Exposed Live Parts.) ] be cut therein. - Air Conditioning or Comfort Cooling Equipment. All SUBSTANTIATION: The proposal adds clarification on equipment intended or installed for the purpose of processing the maintaining the integrity of ducts. treaanent of air so as to control simultaneously its temperature, COMMITTEE ACTION: Accept. humidity, cleanliness, and distribution to meet the requirements of NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 the conditioned space. VOTE ON COMMITTEE ACTION: Appliance. Utilization equipment, generally other than AFFIRMATIVE: 12 industrial, normally built in standardized sizes or types, that is installed or connected as a unit to perform one or more functions, such as clothes washing, air conditioning, food mixing, deep frying, and so on. (Log #CP409) Appliance, Fixed. An appliance that is fastened or otherwise Committee: MAN-MEC secured at a specific location. 501- 182 - (8-15.4.1 (New)): Accept Appliance, Portable. An appliance that is actually moved or can SUBMITrER: Technical Committee on Mechanical for easily be moved from one place to another in normal use. For the Manufactured Housing purpose of this standard, the following major appliances shill be RECOMMENDATION: Add a new 8-15.4.1 as follows: considered portable if cord-connected: refrigerators, clothes 8-15.4.1 Protection of Vertical Ducts. Where vertical ducts are washers, dishwashers without booster heaters, or other similar installed within closets or rooms, they shall be enclosed with appliances. Appliance, Stationary. An appliance that is not easily moved materials enuivalent to those used in the closet or room from one place to another in normal use. construction. Attachment Plug, Plug Cap, Cap. A device that, by insertion in a SUBSTANTIATION: The proposal adds protection criteria for receptacle, estabh'sbes connection between the conductors of the vertical ducts recognizing multi-story units. attached flexible cord and the conductors connected permanently COMMITTEE ACTION: Accept. to the receptacle. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 Bonding. The permanent joining of metallic parts to form an VOTE ON COMMITTEE ACTION: electrically conductive path that will ensure electrical continuity AFFIRMATIVE: 12 and the capacity to conduct safely any current likely to be imposed. Branch Circuit. The circuit conductors between the final overcurrent device protecting the circuit and the outlet(s). A

381 NFPA 501 -- MAY 2000 ROP device not approved for branch circuit protection, such as a Manufactured Home Accessory Building or Structure. Any thermal cutout or motor overload-protective device, is not awning, cabana, ramada, storage cabinet, carport, fence, considered as the overcurrent device protecting the circuit. windbreak, or porch established for the use of the occupant of the Branch-Circuit Appliance. A branch circuit supplying energy to manufactured home upon a manufactured home lot. one or more outlets to which appliances are to be connected; such Manufactured Home Service Equipment. The equipment circuits are to have no permanently connected lighting fixtures not containing the disconnecting means, overcurrent protective a part of an appliance. devices, receptacles, or other means for connecting a Branch Circuit, General Purpose. A branch circuit that supplies manufactured home feeder assembly. a number of outlets for lighting and appliances. Outlet. A point on the wiring system at which current is taken to Branch Circuit, Individual. A branch circuit that supplies only supply utilization equipment. one utilization equipment. Panelboard. A single panel or group of panel units designed for Cabinet. An enclosure designed either for surface or flush assembly in the form of a single panel; including buses, automatic mounting and provided with a frame, mat, or lyim in which a overcurrent protective devices, and equipped with or without swinging door or doors are or can be hung. switches for the control of light, heat, or power circuits; designed Circuit Breaker. A device designed to open and close a circuit by to be placed in a cabinet or cutout box placed in or against a wall nonautomatic means, and to open the circuit automatically on a or partition and accessible only from the front. predetermined overload of current without injury to itseff when Raceway. An enclosed channel of metal or nonmetallic materials properly applied within its rating. designed expressly for holding wires, cables, or busbars, with Concealed. Rendered inaccessible by the structure or finish of additional functfons as permitted in NFPA 70, National Electrical the manufactured home. Wires in concealed raceways are Code. Raceways include, but are not limited to, rigid metal considered concealed, even though they may become accessible by conduit, rigid nonmetallic conduit, intermediate metal conduit, withdrawing them. (See definition of Accessible Wiring Methods.) liquidtight flexible conduit, flexible metallic tubing, flexible metal Connector, Pressure (Solderless). A device that establishes a conduit, electrical nonmetallic tubing, electrical metallic tubing, connection between two or more conductors, or between one or underfloor raceways, cellular concrete floor raceways, cellular more conductors, and a terminal by means of mechanical pressure metal floor raceways, surface raceways, wireways, and busways. and without the use of solder. Raintight. Constructed or protected so that exposure to a beating Dead Front (as Applied to Switches, Circuit-Breakers, rain willnot result in the entrance of water under specified field Switchboards, and Distribution Panelboard). Designed, test conditions. constructed, and installed so that no current-carrying parts are Readily Accessible. Capable of being reached quickly for normally exposed on the front. operation, renewal, or inspection, without requiring those to Demand Factor. The ratio of the maximum demand of a system, whom ready access is requisite to climb over or remove obstacles or part of a system, to the total connected load of a system or the or to resort to portable ladders, chairs, and so on. [See definition part of the system under consideration. of Accessible (as Applied to Equipment).] Device. A unit of an electrical system that is intended to carry, Receptacle. A recentacle is a contact device installed at the outlet but not utilize, electrical energy. for the connection of an attachment nlug. A single recentacle is a Disconnecting Means. A device, group of devices, or other single contact device with no other contact device on the same means by which the conductors of a circuit can be disconnected yoke. A multinle recentacle is two or more contact devices on the from their source of supply. same yoke. A-c~n'.az: dz'-zz "n~'~-~!cd at ^~ c'-'det f~r "~c Enclosed. Surrounded by a case that will prevent a person from accidentally contacting live parts. Equipment. A general term, including material, fittings, devices, .... 6 ...... v~ ...... ~ ...... appliances, fixtures, apparatus, and the like, used as a part of, or I ...... • ..... t" ...... Is ...... ~ ...... ~ ...... in connection with, an electrical installation. Exposed Live Parts. Capable of being inadvertently touched or Receptacle Outlet. An outlet where one or more receptacles are approached nearer than a safe distance by a person. The term is installed. applied to parts not suitably guarded, isolated, or insulated. [See I Utilization Equipment. Equipment that utilizes electric energy definitions of Accessible (as Applied to Equipment) and for :'..zzLha:!ca!, electronic, electrom¢gh~nical, chemical, heating, Concealed.] lighting, or similar purposes. Exposed Wiring Method. On or attached to the surface or Voltage (of a Circuit).* The greatest root-mean-square behind panels designed to allow access. (See definition of (effective) difference of potentia| between any two conductors of the circuit concerned. Accessible Wiring Methods.) , Externally Operable. Capable of being operated without Weather~aroof. Constructed or protected so that exposure to the exposing the operator to contact with live parts. weather vail not interfere with successful operation. Feeder Assembly. The overhead or under-chassis feeder 9-3 Power Supply. conductors, including the grounding conductor, together with the 9-3.1 The power supply to the manufactured home shall be a necessary fittings and equipment, or a power supply cord approved feeder assembly consisting of not more than one listed 50-ampere for manufactured home use, that are designed for the purpose of manufactured home power-supply cord or permanently installed delivering energy from the source of electrical supply to the circuit. A manufactured home that is factory-equipped with gas or distribution panelboard within the manufactured home. oil-fired central heating equipment and cooking appliances shall Fitting. An accessory, such as a locknut, bushing, or other part b 9 permitted to be provided with a listed manufactured home of a wiring system, that is intended primarily to perform a power-supply cord rated 40 amperes. mechanical rather than an electrical function. 9-3.2 If the manufactured home has a power-supply cord, it shall Ground. A conducting connection, whether intentional or be permanently attached to the distribution panelboard or to a accidental, between an electrical circuit or equipment and earth, junction box permanently connected to the distribution or to some conducting body that serves in place of the earth. panelboard, with the free end terminating in an attachment plug Grounded. Connected to earth or to some conducting body that cap. serves in place of the earth. 9-3.3 Cords with adapters and pigtail ends, extension cords, and Grounded Conductor. A system or circuit conductor that is similar items shall not be attached to, or shipped with, a intentionally grounded. manufactured home. Grounding Conductor. A conductor used to connect equipment I 9-3.4 A H~ted suitable clamp or the equivalent shall be provided or the grounded circuit of a wiring system to a grounding at the distribution panelboard knockout to afford strain relief for electrode or electrodes. the cord to prevent strain from being transmitted to the terminals Guarded. Covered, shielded, fenced, enclosed, or otherwise when the power-supply cord is handled in its intended manner. protected by means of suitable covers, casings, barriers, rails, 9-3.5 The cord shall be of a listed type with four conductors, one screens, mats, or platforms to remove the likelihood of approach of which shall be identified by a continuous green color or a or contact by persons or objects to a point of danger. continuous green color with one or more yellow stripes for use as Isolated. Not readily accessible to persons unless special means the grounding conductor. for access are used. 9-3.6 The attachment plug cap shall be a 3-pole, 4-wire, La,:ndry Area. An area containing, or designed to contain, either grounding type, rated 50 amperes, 125/250 volts with a a laundry tray, clothes washer, and/or clothes dryer. configuration as shown in Figure 9-3.6 and intended for use with Lighting Outlet. An outlet intended for the direct connection of the 50-ampere, 125/250-volt receptacle configuration shown in a lampholder, a lighting fixture, or a pendant cord terminating in Figure 9-3.6. It shall he listed, by itself or as part of a power-supply a lampholder. cord assembly, for the purpose, and shall be molded to or

382 NFPA 501 -- MAY 2000 ROP installed on the flexible cord so that it z~her~ i~ securec[ fighdy to the cord at the point where the cord enters the attachment plug cap. If a right-angle cap is used, the configuration shall be so 6. A rcd ;',"~mJng hSc' :h-'! bc mc'-ntcd .¢.n .¢.r =dj===nt to ".he oriented that the grounding member is farthest from the cord. W?~.qNC DO NOT PP.OV!DE =,=,~-v~+t-** po.AnZR U~.q2IL Receptacle Cap THE CROUND!NC E'~CTP.ODE !e !NST*_T LED AND #'~(~KTKTI~C~TI~I~ f~17 TK.TI~TAT I ATIrfMKT TKII~TDTT~TT/~.T~% (c) Service equipment installed in or on the manufactured home provided that all of the following conditions are met; 1. The manufacturer shall include in its written installation instructions information indicatin~ that the home shall be installed on and secured to a permanent foundation or anchorin~ system. 2. The installation of the service eauinment compliesw:ith Article 230 of NFPA 70. National Electrical Code. Note: 50-ampere 125/250-volt receptacle and attachment plug cap 3. Means are orovided for the connection of a grgunding configurations, 3-pole, 4-wire, grounding types used for manufactured electrode conductor to the service eauinment- . and routin~ it home supply cords and manufactured home parks. Complete details of outside the structure. the 50-ampere cap and receptacle can be found in the American National Standard Dimensions of Caps, Plugs and Receptacles, 4, Bondin~ and eroundin~ of the service shall be in accordance Grounding Type (ANSI C73.17-1972). with Article 250. NFPA 70. National Electrical Code; 5. The manufacturer shall include in its written installation Figure 9-3.6 Receptacle and attachment plug cap configurations. instructions one method of ~rounding the service equipment ~ the installation site. The instructions shall clearly state that other methods of ~roundin~ are found in Article 250 of N~A 70. 9-3.7 The overall length of a power-supply cord, measured from National Electrical Code. the end of the cord, including bared leads, to the face of the 6. The minimum size ~roundin~ electrode conductor shall be attachmentplug cap, shall not be less than 21 ft (6.4 m) and shall snecified in the instructions: and not exceed 361/2 ft (11.1 m). The length of cord from the face of 7. A red warning label shall be mounted on or adiacent to the the attachment plug cap to the point where the cord enters the service eouit)ment. The label shall state the following: manufactured home shall not be less than 20 ft (6.1 m)• 9-3.8 The power supply cord shall bear the following marking: WARNING " DO NOT PROVIDE ELECTRICAL P()WER UNTIl, "For use with manufactured homes - 40 amperes" or "For use with THE GROUNDING ELECTRODE(S~ IS INSTALIFD AND manufactured homes - 50 amperes." CONNECTED (SEE INSTALLATION INSTRUCTIONS). 9-3.9 Where the cord passes through walls or floors, it shall be 9-4 Disconnecting Means and Branch-Circuit Protective protected by means of conduits and bushings or the equivalent. Equipment. The cord shall be permitted to be installed within the 9-4.1 The branch-circuit equipment shall be permitted to be manufactured home walls, provided a continuous raceway havin~ a combined with the disconnecting means as a single assembly. maximum size of 1 1/4 in. (31.8 mm) is installed from the branch- Such a combination shall be permitted to be designated as a circuit paneiboard to the underside of the manufactured home distribution panelboard. If a fused distribution panelboard is floor. Thc mcc;':a7 =ha!! hc pzr.'..'ttcd to bc ~:'~ condu't, used, the maximum fuse size for the mains shall be plainly marked, with lettering at least 1/4-in. (6-mm) high and visible when fuses are changed. (See Section ,~-+2c!c 110-22 of NFPA 70, ~t.-'22 2L.:~2" '_:•~.Z";'~,,~.L~,~227_ +_¥-ZZ:'+.+_--~']g"75++ "2~"Y" National Electrical Code, concerning identification of each 9-3.10 Permanent provisions shall be made for the protection of disconnecting means and each service, feeder, or branch circuit at the attachment plug cap of the power-supply cord and any the point where it originated, and the type marking needed.) connector cord assembly or receptacle against corrosion and 9-4.2 Plug fuses and fuseholders shall be tamper-resistant, Type mechanical damage if such devices are in an exterior location S, enclosed in dead-front fuse panelboards. Electrical distribution while the manufactured home is in transit. panelboards containing circuit breakers shall also be dead-front 9-3.11 Where the calculated load exceeds 50 amperes or where a permanent feeder is used, the supply shall be by means of the tY~.3 Disconnecting Means. A single disconnecting means shall following: be provided in each manufactured home consisting of a circuit (a) One mast weatherhead installation, installed in accordance breaker, or a switch and fuses and thc:: its accessories installed in with Article 230 of NFPA 70, National Electrical Code, containing a readily accessible location near the point of entrance of the four continuous, insulated, color-coded feeder conductors, one of sup.ply.cord or conductors into the manufactured home. The which shall be an equipment grounding conductor; mare circuit breakers or fuses shall be plainly marked "Main." (b) A lhtcd metal raceway or !!;tcd rigid nonmetallic conduit This equipment shall contain a solderless type of grounding from the disconnecting means in the manufactured home to the connector or bar for the purposes of grounding, with sufficient underside of the manufactured home, with provisions for the terminals for all grounding conductors. The neutral bar attachment of a suitable junction box or fitting to the raceway on termination of the grounded circuit conductors shall be insulated the underside of the manufactured home [with or without in accordance with Section 9-9,$. conductors as in Section 9-3.11(a)]. The manufacturer shall 9-4.4 The disconnecting equipment shall have a radng suitable provide !n h!z written installation instructions ~ the proper for the connected load. The distribution equipment, either circuit feeder conductor sizes for the raceway and the size of the junction breaker or fused type, shall be located a minimum of 24 in. (610 box to be used; or ms) from the bottom of such equipment to the floor level of the {.'~ C~..~: ...... : ..... : .... ii~..1 __ +1+...... C ...... ,4 hGV.=C "n manufactured home. 9-4.5 A distribution panelboard employing a main circuit breaker shall be rated not less than 50 amperes and employ a 2- pole circuit breaker rated 40 amperes for a 40-ampere supply cord, or 50 amperes for a 50-ampere supply cord. A distribution .. ~xtcr'zr eq..='!pment, or +~c cnc!ozure !n :':h=ch it is insm]!ed, panelboard employing a disconnect switch and fuses shall be rated :h~/! b: :':ca*&cr~rocf an! !nzmllcd "n :c=crd2.nc: ;.,'+& Ar:'c!c ~7~ not less than 60 amperes and shall employ a single, 2-pole fusehoider rated not less than 60-ampere+. with 40- or 50-arnpere .,,;*~kl+ g'~. .... : ..... * l--r~*; ~.o...... s main fuses for 40- or 50-ampere supply cords, respectively. The outside of the distribution panelboard shall be plainly marked with the fuse size. accordance :-~.uh ?~dde: 250 2+, ~50 25, =nd 250 5~ of .k.wPA 70, 9-4.6 The distribution panelboard shall not be located in a Nation~M EIcc'--c ^--'- Code; bathroom or any other inaccessible location, but shall be permitted just inside a closet entry if the location is such that a "n:*cuc+-zn: on++ .~..e*~hcd zf ~round:ng ...... "~'v ...... clear space of 6 in. (152 mm) from any easily ignitable materials is maintained in front of the distribution panelboard and the distribution panelboard door can be extended to its full open

383 NFPA 501 -- MAY 2000 ROP

position (at least 90 degrees). A clear working space at least 30 in. Exception No. 1: For a receptacle installed solely for the (762 ram) wide and 30 in. (762 mm) in front of the distribution electrical supply to and support of an electric clock in any of the panelboard shall be provided. This space shall extend from the rooms specified above and floor to the top of the distribution panelboard. Exception No. 2: For receptacles installed to provide power for Where used as switches, circuit breakers shall be so installed that supplemental equipment an d lighting on gas-fired ranges, ovens, the center of the grip of the operating handle of the circuit or counter-mounted cooking units. breaker, when in its highest position, will not be more than 6 ft. 7 (c) General Appliances (Including Furnace, Water Heater, in. (2.0 m) above the floor. Range, and Central or Room Air Conditioner, Etc.). There shall 9-4.7 Branch-clrcuit distribution equipment shall be installed in be one or more circuits of adequate rating in accordance with the each manufactured home and shall include overcurrent protection following: for each branch circuit consisting of either circuit breakers or I. The ampere rating of fixed appliances shall not exceed fuses. over 50 percent of circuit rating if lighting outlets (receptacles, 9-4.7.1 The branch circuit overcurrent devices shall be rated in other than kitchen, dining area, and laundry, considered as accordance with the following: lighting outlets) are on same circuit. (a) Not more than the circuit conductors; and 2. For freed appliances on a circuit without lighting outlets, the (b) Not more than 150 percent of the rating of a single sum of rated amperes shall not exceed the branch-circuit rating. appliance rated 13.3 amperes or more that is supplied by an Motor loads or other continuous duty loads shall not exceed 80 individual branch circuit; but percent of the branch circuit rating. (c) Not more than the overcurrent protection size marked on 3. The rating of a single cord- and plug-connected appliance the air conditioner or other motor-operated appliance. on a circuit having no other outlets shall not exceed 80 percent of 9-4.8 A 15-ampere multiple receptacle shall be permitted where the circuit rating. connected to a 20-ampere laundry circuit. 4. The rating of a range branch circuit shall be based on the 9-4.9 Where circuit breakers are provided for branch-circuit range demand as specified for ranges in 9-11.2(e). (For central air protection, 240-volt circuits shall be protected by 2-pole common conditioning, see Article 440 of NFPA 70, National Electrical or companion trip, or handle-tied, paired circuit breakers. Code.) 9-4.10 ...... ~ .~, ..... ~ ...... ~ ...... ~ ...... ~ 5. Where a laundry area is provided, a 20-ampere branch circuit shall be provided to supply laundry receptacle outlets. This circuit shall have no other outlets. [See 9-6.4(g).] 6. Bathroom receptacle ounets shall be supplied by at least one 20-ampere branch circuit. Such circuits shall have no other *R. g^^.4 ...... g.1 .... ~ ...... /1 .l~--II .^^.-1 --. g'~ll ..... outlets. [See 9-6.2.] THIS CONNECT!ON FOR !20/2!e VOLT, 3 POLE, *. WIPv, ee 9-6 Receptacle Outlets. CI'7 A~ADWDE" ~I~DDT V 9-6.1 All receptade outlets shall be in accordance with the following: The manufacturer shall provide in its written installation (a) Of grounding type instructions the minimum amnere ratin~ of the feeder assembly or. (b) Installed according to Section 210-7 of NFPA 70, National where provided, the service entrance conductors intended for Electrical Code connectiotq tO the manufactured home. The rating provided shall (c) Except when supplying specific appliances, be parallel-blade, not be l¢$S than the minimum load as calculated in accordance 15- or 20-ampere, 125-volt, either single or duplex 9-6.2 All 125-volt, single-phase, 15- and 20-ampere receptacle 'with 9-11. outlets installed outdoors or in compartments accessible from 94.11 When a home is provided with installed service outside the manufactured home, and in bathrooms, including equipment, a single disconnecting means for disconnecting the receptacles in light fixtures shall have ground-fault circuit- branch-circuit conductors from the service entrance conductors interrupter protection for personnel. Ground-fault circuit- shall be provided in accordance with Part F of Article 230 of NFPA interrupter protection for personnel shall be provided for 70, National Electrical Code. The disconnecting means shall be receptacles serving countertops in kitchens, and receptacle outlets listed for use as service equipment. The disconnecting means located within 6 ft (1.83 m) of a wet bar sink. Feeders supplying shall be permitted to be combined with the disconnect required by branch circuits shall be permitted to be protected by a ground- 9-4.3. The disconnecting means shall be rated not more than the fault circult-interrupter in lieu of the provision for such ampere supply or service capacity indicated o~- in the written interrupters specified above. Feeders supplying branch circuits installation instructions ~ required by 9-4.10. shall be permitted to be protected by a ground-fault circuit- interrupter in lieu of the provision for such interrupters specified

"'1 ~'1 ~'''" .... + .... I~ "+'+I .... "1 ...... Y + + ...... ~+ ..... ++ ...... above. T[JT(7 CIKTT~TE'PTT/~KT "C'/'%D 10t"l /OAI~ t?~T T ~ D(~IT 17 c/ ~[ATTD[2 ~CI Exception: Receptacles installed for appliances in dedicated spaces, such as for dishwashers, disposals, refrigerators, freezers, and laundry equipment. 9-5 Branch Circuits Required. The number of branch circuits 9-6.$ There shall be an outlet of the grounding type for each required shall be determined in accordance with 9-5(a) through 9- cord-connected luted appliance installed. 5(c). 9-6.4 Receptacle Outlets Required. Except in the bath, closet, (a) Lighting. Based on 3-volt-amperes per sq ft times outside mad hall areas, receptacle outlets shall be installed at wall spaces 2 dimensions of the manufactured home (coupler excluded) ft (610 mm) wide or more so that no point along the floor line is divided by 120 volts times 15 or 20 amperes to determine number more than 6 ft (1830 nun) measured horizontally from an outlet in of 15- or 20-ampere lighting area circuits. that space. In addition, a receptacle outlet shall be installed in the following locations: Example: (a) Over or adjacent to counter tops in the kitchen [at least one on each side of the sink if countertops are on each side and are 12 3 x Length x Width = No. of 15- (or 20-) ampere circuits in. (505 mm) or over in width] 120 x 15 (or 20) (b) Adjacent to the refrigerator and freestanding gas-range space. A duplex receptacle shall be permitted to serve as the (b) Small Appliances. For the small appliance load in kitchens, outlet for a countertop and a refrigerator pantries, dining rooms, and breakfast rooms of manufactured (c) At countertop spaces for built-in vanities homes, two or more 20-ampere appliance branch circuits, in (d) At countertop spaces under wall-mounted cabinets addition to the branch circuit specified in Section 9-5(a), shall be (e) In the wall at the nearest point to where a bar-type counter provided for all receptacle outlets in these rooms, and such attaches to the wall circuits shall have no other outlets. Receptacle outleta ~upp!ied ~"'~y (f) In the wall at the nearest point where a fixed room divider at !e-~t tv,'v :Fp!!ancc receptacle branch circ'aP.~" aha!! be ina+m!!ed attaches to the wall in the kitchen. Countertoo recentacle outlets installed in the (g) In laundry areas within 6 ft ( 1830 r'..m 1.83 m) of the kitchen shall be sunnlied bv not less than two small aooliance intended location of the laundry appliance(s) branch circuits, either or both of which shall also be oennitted to (h) At least one receptacle outlet outdoors supply receptacle outlets in the kitcheo and other rooms specified , (i) A~!acent to ha+A'.room b~'n~ c.r "ntczr.a! ":~t~. tb.c '.'ght future above. over the-bathroom basin

384 NFPA 501 ~ MAY 2000 ROP

At least one wall recentacle outlet shall be installed in bathrooms covering materials are in contact with the studs. Steel plates on within 36 in. (914 ram) of the outside edge of each basin. The each side of the cable, or a tube, with not less than No. 16 MSG receotacle outlet shall be located on a wail that is adjacent to the wall thickness shall be required to protect the cable. These plates basin location. Recentacle oudets shall not be instaJled in ~ f~c¢- or tubes shall be securely held in place. un nosition in the work surfaces or countertoos in a bathroom 9-8.6 Where metal faceplates are used, they shall be effectively grounded. basin location. 9-8.7 If the .range, clothes dryer, or similar appliance is (j) For the connection of pipe heating cable(s), on the connected by metal-covered cable or flexible metal conduit, a underside of the unit as follows: length of not less than 3 ft (914 mm) of free cable or conduit shall 1. Located within 2 ft (610 mm) of the cold water inlet. be provided to permit moving the appliance. Type NM or Type SE 2. Connected to an interior branch circuit, other than a small cable shall not be used to connect a range or a dryer. This shall appliance branch circuit. It shall be permitted to utilize a not prohibit the use of Type NM or Type SE cable between the bathroom receptacle circuit for this purpose. branch circuit overcurrent-protective device and a junction box or 3. On a circuit where all of the oudets are on the load side of range or dryer receptacle. the ground-fault circuit-interrupter. 9-8.8 Where rigid metal conduit or intermediate metal conduit is 4. This outlet shall not be considered as the receptacle terminated at an enclosure with a locknut and bushing required by 9-6.4(h). connection, two Iocknuts shall be provided, one inside arDd one 9-6.5 Receptacle outlets shall not be required in the following outside of the enclosure. Rigid nonmetallic conduit or electrical locations: nonmetallic tubing shall be permitted. All cut ends of the conduit (a) In the wall space occupied by built-in kitchen or wardrobe and tubing shall be reamed or otherwise finished to remove rough cabinets edges. (b) In the wall space behind doors that can be opened fully 9-8.9 Switches shall be rated as follows: against a wall surface (a) For lighting circuits, switches shall h:.;'c z. 10 ampc:'c, 120 to (c) In room dividers of the lattice type that are less than 8 ft ..'~ ...... "'^'" ~': ....~, v. .k.!g.k.cr ~ nccdcd for "..k.c connected be rated not (2A.E° ma~. 2.44 re)long, not solid, and within 6 in. (152 mm) of less than 10 amneres. 120 to 125 volts, and in no case less than the the floor connected load. (d) In the wall space afforded by bar-type counters (b) For motors or other loads, switches shall have ampere or ...... I-" ...... horsepower ratings, or both, adequate for loads controlled. (An "ac general-use" snap switch shall be permitted to control a motor 9-6.6 Receptacle outlets shall not be installed above electric baseboard heaters, unless provided for in the listin~ or 2 horsepower or less, with fulMoad current not over 80 percent of the switch ampere rating.) manufacturers instructions. 98.10 At least 6 in. (152 mm) of free conductor shall be left at 9-6.7 Receptacles shall not be in a face up position in any each outlet box. counter top. Exception: Where conductors are intended to loop without 9-7 Fixtures and Appliances. joints. 9-7.1 Electrical materials, devices, appliances, fittings, and other 98.11 When outdoor or under-chassis line-voltage (120 volts, equipment installed, intended for use in, or attached to the nominal or higher) wiring is exposed to moisture or physical manufactured home shall be approved for the application and damage, it shall be protected by rigid metal conduit or shall be connected in an approved manner when in service. intermediate metal conduit. The conductors shall be suitable for • ~.:..a.o Mearls shall be provided to securely fasten appliances wet locations. Electrical metallic tubing or rigid nonmetallic when the manufactured home is in transit. (See Section 9-9.) conduit shall be permitted to be used when closely routed against 9-7.2 Spcc:fica!!y [Listed pendant-type fixtures or pendant cords frames and equipment enclosures. shall be permitted in manufactured homes. 9-7.3 Where a lighting fixture is installed over a bathtub or in a C shower stall, it shall be listed for wet locations. [See also Art!c!c 98.12 Outlet boxes of dimensions less than those required in ;ecfion 410-4(d) of NFPA 70, National Electrical Code.] Table 370-16(a) of NFPA 70, National Electrical Code, shall be 9 7A The :"5.tch fvr :he":~r !!gh~ng fixturcz and exhaust fang permitted, provided the box has been tested and approved for the !coated c-'cr a t'-b cr in a ~hc-':cr ~tal! ~M! bc !coated cut~ide the purpose. ...~ ~_ ., ...... ~e__ 9 6 4 ) 9-8.13 Boxes, fittings, and cabinets shall be securely fastened in 9-7.4 Any combustible wall or ceiling finish exposed between the place and shall be supported from a structural member of the edge of a fixture canopy, or pan, and an outlet box shall be home, either directly or by using a substantial brace. Snap-in type covered with noncombustible or llmited-combusdble material. boxes provided with special wall or ceiling brackets that securely 9-7.5 Every appliance shall be accessible for inspection, service, fasten boxes in walls or ceilings shall be permitted. repair, or replacement without removal of permanent 98.14 Outlet boxes shall fit closely to openings in combustible construction. walls and ceilings and shall be flush with z'ach :u:'f,acc~. the finish 9-8 Wiring Methods and Materials. surface or nroiect therefrom. In walls and ¢¢iling~ of 98.1 Except as specifically limited in this section, the wiring noncombustible material, outlet boxes and fittings shall be methods and materials specified in NFPA 70, National Electrical installed so that the front edee of the box or fittin~ will not be set Code, shall be used in manufactured homes. back from the finished surface more than 1/4 in. (6 ram). Plaster. 9-8.1.1 Aluminum conductors, aluminum alloy conductors, and drywall, or olasterboard surfaces that are broken or incomplete aluminum core conductors such as copper-clad aluminum shall shall be reoaired so that there will be no ~aps or open sp~¢¢s not be acceotable for use in branch-circuit wiring in manufactured ~eater than 1/8 in (3 mm) at the edge of the box or fit~i~qg, homes. 98.15 Appliances having branch-circuit terminal connections 98.2 Nonmetallic outlet boxes shall be permitted only with that operate at temperatures higher than 140°F (60°C) shall have nonmetallic cable or nonmetallic raceways. circuit conductors as described in 9-8.16.1 and 9-8.16.2. 9-82~ Nonmetallic cable located 15 in. (381 ram) or less above 9-8.15.1 Branch-circuit conductors having an insulation suitable the floor, if exposed, shall be protected from physical damage by for the temperature encountered shall be permitted to be run covering boards, guard strips, or raceways. Cable likely to be direcdy to the appliance. damaged by stowage shall be so protected in all cases. 9-8.15.2 Conductors having an insulation suitable for the I 98.4 Nonmetallic sheathed cable shall be secured by staples, temperature encountered shall be run from the appliance terminal straps, or similar fittings designed and installed so as not to injure connections to a readily accessible outlet box placed at least 1 ft any cable. Cable shall be secured in place at intervals not (305 ram) from the appliance. These conductors shall be in a exceeding 4 1/2 ft ( .... mm 1.37 m) and shall be within 12 in. suitable racewav or Twe AC or MC cable of at least 18 in. (450 (305 ram) from every cabinet, box, or fitting. mm) but not more than 6 ft (1.83 ram) in l¢Ilgth. "~at ~h~! c-.:tcnd 9-8.5 Metal-covered and nonmetallic cables shall be permitted to ...... , .... Aft (!220 ~ i. pass through the centers of the wide side of 2-in. x 4-in. (50-ram x 9-8.16 A substantial brace for securing a box, fitting, or cabinet 100-ram) studs. However, they shall be protected where they pass shall be as described in NFPA 70, National Electrical Code, 3~*dc!e through 2-in. x 2-in. (50-mm x 50-mm) studs or at other studs or Section 370-23(d-b_), or the brace, including the fastening frames where the cable or armor would be less than 1 1/4 in. (32 mechanism to attach the brace to the home structure, shall mm) from the inside or outside surface of the studs where the wall withstand a force of 50 Ib (22.7 kg) applied to the brace at the

385 NFPA 501 -- MAY 2000 ROP

intended point(s) of attachment for the box in a direction paint-penetrating fittings, such as screws and star washers or perpendicular to the surface where the box is installed. equivalent.

...... I ...... I" ...... 9-10 Electrical Testing. 9-10.1 Dielectric Strength Test. The wiring of each manufactured home shall be subjected to a 1-minute, 900-volt to 1079-volt, dielectric strength test (with all switches closed) between 9-8.17 Where the sheathing of NM cable has been cut or live parts and the manufactured home ground and neutral and the damaged and visual inspection reveals that the conductor and its manufactured home ground. Alternatively, the test shall be insulation has not been damaged, it shall be permitted to repair rmitted to he performed at 1080 volts to 1250 volts for 1 second. the cable sheath with electrical tape that provides equivalent is test shall be performed after branch circuits are complete and protection to the sheath. after fixtures or appliances are installed. 9-9 Groundlng. Exception: Fixtures or appliances that are listed shall not be 9-9.1 General. Grounding of both electrical and nonelectrical required to withstand the dielectric strength test. metal parts in a manufactured home shall be through connection 9-10.2 Each manufactured home shall be subjected to the to a grounding bus in the manufactured home distribution following tests: panelboard. The grounding bus shall be grounded through the (a) An electrical continuity test to ensure that metallic parts are green-colored conductor in the supply cord or the feeder wiring to properly bonded; the service ground in the service-entrance equipment located (b) An operational test to demonstrate that all equipment, adjacent to the manufactured home location. Neither the frame of except water he/tters and electrical furnaces, are connected and in the manufactured home nor the frame of any appliance shall be working order; and connected to the grounded circuit conductor (neutral) in the (c) Electrical polarity checks to determine that connections have manufactured home. been properly made. Visual verification shall be an acceptable 9-9.2 Insulated Neutral. check. 9-9.2.1 The grounded circuit conductor (neutral) shall be 9-11 Calculations. insulated from the grounding conductors and from equipment 9-11.1 The following method shall be employed in computing enclosures and other grounded parts. The grounded circuit the supply cord and distribution-panelboard load for each feeder terminals (neutral) in the distribution panelboard and in ranges, assembly for each manufactured home and shall be based on a 3- clothes dryers, counter-mounted cooking units, and wall-mounted wire, 120/240-volt supply with 120-volt loads balanced between the ovens shall be insulated from the equipment enclosure. Bonding two legs of the 3-wire system. screws, straps, or buses in the distribution panelboard or in (a) Lighting and Small Appliance Load: appliances shall be removed and discarded. However, where Lighdng Volt-Amperes: Length times width of manufactured service equipment is installed in the manufactured home, the home (outside dimensions exclusive of coupler) times 3 volt- neutral conductors and the ground bus shall be permitted to be amperes per sq ft; e.g., length x width x $ = lighting volt-amperes. connected in the distribution panel. Lighting circuits shall be permitted to serve built-in gas ovens with 9-9.2.2 Connections of ranges and clothes dryers with 120/240- electric service only for lights, clocks, or timers, or listed cord- volt, $-wire ratings shall be made with 4-conductor cord and 3- connected garbage disposal units. pole, @wire, grounding-type plugs, or by Type AC cable, Type MC Small Appliance Volt-Amperes: Number of circuits times 1500 cable, or conductors enclosed in flexible metal conduit. For 120- volt-amperes for each 20-ampere appliance receptacle circuit (see volt-rated devices, a S-conductor cord and a 2-pole, S-wire, definition of "Appliance, Portable"); e.g., Number of circuits x grounding-type plug shall be permitted. 1500 = small appliance volt-amperes. 9-9.3 Equipment Grounding Means. Laundry Area Circuit Volt-Amneres: 1500 volt-amneres 9-9.3.17he green-colored insulated grounding wire in the supply Total X/oR-Amperes: Lighting-volt-amperes plus small appliance cord or permanent feeder wiring shall be connected to the plus laundry. = total volt-amperes. grounding bus in the distribution panelboard or disconnecting First 3000 total volt-amperes at 100 percent plus remainder at 35 means. percent = volt-amperes to be divided by 240 volts to obtain current 9-9.3.2 In the electrical system, all exposed metal parts, (amperes) per leg. enclosures, frames, lamp fixture canopies, and so forth, shall be (b) The total load for determining power supply shall be the effectively bonded to the grounding terminal or enclosure of the sum of the following: distribution panelboard. 1. Lighting and small appliance load as calculated in 9-11.1(a); 9-9.3.3 Cord-connected appliances, such as washing machines, and clothes dryers, refrigerators, and the electrical system of gas ranges 2. Nameplate amperes for motors and heater loads (exhaust shall be grounded by means of an approved cord with grounding fans, air conditioners, and electric, gas, or oil heating). Omit conductor and grounding-type attachment plug. smaller of air conditioning and heating, except include blower 9-9.4 Bonding of Noncurrent-Carrying Metal Parts. motor if used as air-conditioner evaporator motor. Where an air 9-9.4.1 All exposed noncurrent-carrying metal parts that are able conditioner is not installed and a 40-ampere power-supply cord is to become energized shall be effectively bonded to the grounding provided, allow 15 amperes per leg for air conditioning; and terminal or enclosure of the distribution panelboard. A bonding 3. 25 percent of current of largest motor in 9-11.1 (b)2; and conductor shall be connected between each distribution 4. Total of nameplate amperes for disposal, dishwasher, water panelboard and an accessible terminal on the chassis. heater, clothes dryer, wall-mounted oven, and cooking units. 9-9.4.2* Grounding terminals shall be of the solderless type and Where the number of these appliances exceeds three, use 75 listed as pressure-terminal connectors recognized for the wire size percent of total; and used. Star washers or other approved paint-penetrating fittings 5. Derive amperes for freestanding range (as distinguished from shall be used to bond terminals to the chassis or other coated separate ovens and cooking units) by dividing the values in Table areas. The bonding conductor shall be solid or stranded, 9-11.1(b)5 by 240 volts; and insulated or bare, and shall be No. 8 copper minimum, or equal. The bonding conductor shall be routed so as not to be exposed to Table 9-11.1(b)5 Amperes physical damage. I 9-9.4.3 Metallic gas, water, and waste pipes and metallic air- circulating ducts shall be considered bonded if they are connected Nameplate Rating Use to the terminal on the chassis (see Section 9-9.4,1 ) by clamps, by solderless connectors, or by suitable grounding-type straps. 10,000 watts or less 80 percent of rating volt- 9-9.4.4 Any metallic roof and exterior covering shall be amperes considered bonded if in accordance with the following: 10,001 to 12,500 watts 8000 volt-amperes (a) The metal panels overlap one another and are securely 12,501 to 13,500 watts 8400 volt-amperes attached to the wood or metal frame parts by metallic fasteners; 13,501 to 14,500 watts 8800 volt-amperes and 14,501 to 15,500 watts 9200 volt-amperes (b) ff the lower panel of the metallic exterior covering is secured 15,501 to 16,500 watts 9600 volt-amperes by metallic fasteners at a cross member of the chassis by two metal 16,501 to 17,500 watts 10,000 volt-amperes straps per manufactured home unit or section at opposite ends. The bonding strap material shall be a minimum of 4 in. (102 ram) 6. If outlets or circuits are provided for other than factory- in width of material equivalent to the skin or a material of equal or installed appliances, include the anticipated load. better electrical conductivity. The straps shall be fastened with (c) The following example is given to illustrate the application of this method of calculation:

386 NFPA 501 m MAY 2000 ROP

Example..A manufactured home is 70 ft x 10 ft and has two portable appliance circuits, a laundry area. a 1000-volt-ampere, 240-volt heater, a 200-volt-ampere, 120-volt exhaust fan, a 400-volt- ampere, 120-volt dishwasher, and a 7000-volt-ampere electric range. [See Table 9-11.1(c).]

Table 9-I1.1(c) Calculation of Anticipated Load

Lighting and Small Appliance Load Volt-Amperes

Lighting and small appliance load 2100 Small appliance 1500 x 2 3000 Laundry 1500 x 2 1500 Total 6600 1st 3000 volt-amperes at 100 percent 3000 Remainder (6600-3000) at 35 percent 1260 Total 4260

4260 volt - amperes _ 17.75 amperes per leg 240 volts

Amperes Amperes per leg A per leg B

Lighting and small appliances 17.75 17.75 Heater, 240-volt 1000/240 volt 4.2 4.2

200 volt - amperes x 1290 2.08 Fan 120 - volt 120- volt

Dishwasher 120-volt 400 volt-amperes/120 volt 3.03

Range (7000 volt-amperes x .8)/240 volts 23.3 23.3

Totals 47.33 48.55

NOTE: Based on the higher current calculated for either leg, use one 50-A supply cord.

9-11.2 The following is an optional method of calculation for Table 9-11.2 Optional Calculation for Manufactured Homes lighting and appliance loads for manufactured homes served by a With ll0-Ampere or Larger Service single, 3-wire, 120/240-volt set of feeder conductors with an ampacity of 100 or greater. The total load for determining the Load Demand feeder ampacity shall be permitted to be computed in accordance (in kW or kVA) Factor with Table 9-11.2 instead of the method previously specified. (Percent) Feeder conductors whose demand load is determined by this optional calculation shall be permitted to have the neutral load Air-conditioning and cooling, including 100% determined by Section 220-22 of NFPA 70, National Electrical heat pump compressors Code. The loads identified in Table 9-11.2 as "other load" and as Central electric space heating 65% "Remainder of other load" shall include the following: Fewer than 4 separately controlled electric 65% (a) 1500 volt-amperes for each 2-wire, 20-ampere small space-heating units appliance branch circuit and each laundry branch circuit specified (b) 3 volt-amperes per sq ft for general lighting and general-use 1st 10 kW of all other load 100% Remainder of other load 40% receptacles (c) Nameplate rating of all fixed appliances, ranges, wall- mounted ovens, counter-mounted cooking units, clothes dryers, 9-12 Wiring of Expandable Units and Multi-Wide Units. and water heaters 9-12.1 Expandable or multi-wide manufactured homes shall use (d) Nameplate ampere or kVA rating of all motors and of all approved and listed fixed-type wiring methods and materials for low-power-factor loads connecting such units to each other. (e) The largest of the following: 9-12.2 Expandable or multiple-unit manufactured homes not 1. Air conditioning load having permanently installed feeders that are to be moved from 2. The 65-percent of nameplate rating of the central electric one location to another shall be permitted to have disconnecting space-heating load means with branch

387 NFPA 501 ~ MAY 2000 ROP

9-13.2 A manufactured home provided with a branch circuit %3.6: Change uses language from the 1999 NEG, Section 550- designed to energize outside heating equipment or air- 5(c), and clarifies that the plug cap and/or combination plug cap conditioning equipment, or both, located outside the and power-supply cord assembly be listed for the purpose. manufactured home, other than room air conditioners, shall have %3.9: The raceway allowed should be a type approved by the such branch circuit conductors terminate in a listed outlet box, or NEC for containing wiring. 9-1.4 requires listin~g of all materials disconnecting means, located on the outside of the manufactured and equipment, and the definition in 9-2 des this into the NEC- home. A label ~hall be r-...... 1-1 ...... ~a~..~ ~.~:d ...... i...... t~, approved raceways. Each specific article in the NEC requires raceways to be listed. The maximum size of 1 1/4 in. is taken from THIS CONNECTION IS FOP. HF_&T!NC ?~!D/OR NEC 550-5(g). AIR COND!TION!NC ~,tltDtL~~'t~tw T~" uDa~.tr't_t 9-5.11 (b): Changes remove the words "listed" 9-1.4, 9-2 CIRCUIT !S P.ATED AT ~,trvr ,,,,~r,~ 'rua~t Definitions, and raceway articles in the NEC require the raceways to be listed. There is no need to repeat the language here. Other PrXNDUCTOR ?~.~ PAC..r!'Y. changes are editorial. A D!SCONNECT!NC MF-~A~!S SP~-T.L EE LOCATED 9-3.11(c): Change incorporates the language from 1999 NEC WITHIN S!CHT OF THE EQUIPMENT. Section 550-23(b) while retaining the extra requirements from the The c~rrect :'~!mge and amF-ere ~+:~ or..~u r...^ ,.,.: .... Tt. .... 1999 draft of NFPA 501. It is not necessary to list the specific pl aquc ~.hall bc not leg0 t.h~.'~ 0.020 in. rKnox...... ~: ...... ^.x , .t.:_l...... sections of the NEC here as the general references to Articles 230 and 250, as well as other applicable articles are adequate. 9-4.1: Change uses the proper wording for the site. 110-22 is a in (AA.5 ----~ --:-: ..... :~ section, not an article. The manufacturer shall nrovide in its written installation 9-4.3: Changes made to be consistent with the NEC language and instructions the location of the outlet box or disconnectine means. provide a specific reference to accomplish the required isolation. ~ amnere ratine of the branch circuit conductors nrovided, and 9-4.5: The change clarifies the intent of this section relative to the voltage ratine of the circuit (e.m. 120. 240. or 120/240 voltsL determining the minimum rating of the equipment. 9-4.10: The requirement that the manufacturer provide a plaque 9-14 Painting. Metal raceways and sheath of nonmetallic cable on the outside of the unit stating the ampere rating of the supply shall be permitted to be painted during the painting or staining of conductors is unnecessary. They are required to ship with the unit the manufactured home. Provisions shall be made to ensure that a detailed set of written installation instructions stating what is no paint is applied to the individual wires so the color coding is needed to complete the installation on-site. These instructions are not obliterated by the paint. available to the installer as well as the inspector, thus eliminating Exception: Metal raceways shall not bepermitted to be painted the need to refer to the plaque previously required. The where grounding continuity would be reduced. instructions will specify the number of conductors to be used 9-15 Polarization. depending on whether or not the manufacturer has designed the 9-15.1 The white conductor shall be employed for the grounded installation for a distribution panelboard or service equipment as (neutral) circuit conductors only and shill be connected to the covered in 9-4.11. It is not necessary to specify the.voltage in this white terminal or lead on receptacle outlets and fixtures. The section as that is covered by %1.$. grounded conductor shall be the unswitched wire in switched 9-4.11: Same substantiation as for Section 9-4.10. circuits. Exception: A cable containing an insulated conductor with a 9-4.12: The requirements of this section have been deleted as they are no longer necessary based on the changes to Section 9- white or natural gray outer finish or a markine of three continuous 4.10. Where the service equipment is provided by the white strines shall be permitted for single-pole, 3-way, or 4-way manufacturer, the written installation instructions will contain the switch loops where this ~e ;v~-tc cr natural gin)" conductor is used required information. It is not necessary to specify the voltage for the supply to the switch, but not as a return conductor from requirements as Section %1.3 indicates a 120/240 volt 3-wire, AC, the switch to the switched outlet. In these applications, with grounded neutral supply. %5(b): Incorporates language from the NEC for consistency and rcqu:rc~, the conduqt0r wath white or natural gray insulation or parallels the change submitted by the MHCSS Consensus with three continuous white strioes shall be nermanentlv re- Committee. [See Proposal 501-192 (Log #86).] identified to indicate its use by oaintin~ or other effective means at 9-5(c)1: Uses language of the NEC for consistency. it* terminations and at each location where the conductor is visible 9-6.4: The NEC does not allow a receptacle in a fixture to serve and accessible. as the required receptacle outlet for a bathroom. The new requirements added to this section are consistent with the location 9-15.2 If the identified (white) conductor of a cable is used for requirements for bathroom receptacle outlets from Section 210- other than grounded conductors or for other than switch loops as explained above (for a 240-volt circuit, for example), the 52(d) of the 1999 NEC. 9-6.6: Section deleted; NEC Section 410-57(c) prohibits conductor shall be finished in a color other than white at each outlet where the conductors are visible and accessible. receptacles from within a tub or shower space only. Receptacles 9-15.3 Green-colored wires or those that are green with yellow outside these spaces are permitted and would have GFCI stripes shall be used for grounding conductors only. protection, providing the level of safety needed. Additionally, there is no need to have more stringent requirements for this 9-16 Examination of Equipment for Safety. The examination or inspection of equipment for safety in accordance with this location in a manufactured home. %6.6: Change incorporates language from Fine Print Notes in standard shall be conducted under uniform conditions and by organizations properly equipped and qualified for experimental the NEC to provide proper guidance for these installations. testing, inspections of the run of goods at factories, and service- 9-7.1: See Proposal 501-198 (Log #92). "Means" is the more value determinations through field examinations. appropriate term to be used and is contained in the NEC 550-9(a). SUBSTANTIATION: This proposal updates the language of %7.2: Change removes the word "specifically." This could be Chapter 9 to coincide with the language of the 1999 NEC Article misinterpreted that a pendant fixture would have to be labeled for 550 and other articles as appropriate while retaining those sections manufactured home use in the same manner as power supply of Chapter 9 that contain additional requirements deemed cords. Panel feels that the intent is to ensure that such a tzxture necessary for manufactured home construction. In most cases, merely be listed without the specific labeling for manufactured these changes incorporate the language of the public proposals home use. Location of such fixtures would be subject to area restrictions of the NEC in general. received. Some of the proposed changes have already been included in the 1999 draft of NFPA 501. 9-7.3: Editorial. Section by section substantiation is as follows: %7.4: Deleted; NEC Section 380-4 contains requirements for 9-1.5: Section deleted and the requirements are moved to 9-8.1.1. switches in wet locations in tub or shower spaces and covers any The panel feels that this material more appropriately belongs switch, not just those for shower lights and exhaust fans. under Wiring Methods and Materials. No change in text. Reference to %6.4 was not appropriate as that section covers %2: Revised definition of "Receptacle and Utilization receptacles. Equipment" to use the new language found in NEC Article 100. %8.1.1: New section uses material relocated from 9-1.5. Panel 9-3.4: Change incorporates language from the 1999 edition of feels this more appropriately belongs under wiring methods-and NFPA 70. The committee feels that the term "suitable" is materials. appropriate for this section. See Proposal 501-188 (Log #82). %8.9(a): Language taken from NEC 550-10(g) and Proposal 501- 202 (Log #95).

388 NFPA 501 -- MAY 2000 ROP

9-8.12: It is not necessary to require specific cables and 9-11.1(a): 1. The definition of "Appliance, Portable" would conductors as the language in Section 9-8.11 already requires the appear to already include the laundry area circuit. conductors to be suitable for wet locations. 2. Table 9-11.1(c) contains an editorial error. "Laundry 1500 x 9-8.14: Change uses language from NEC Sections ~70-20, 21, 2=1500" should read "Laundry 1500 x 1=1500." Section 9-8.18, and Proposals 501-205 (Log #97), 501-206 (Log #120), and 501-207 (Log #121). Based on renumbering this Section now becomes 9-8.14. (Log #19) 9-8.15.2: New language reflects changes in Section 410-67(C) of Committee: MAN-ELE the 1999 NEC dealing with tap conductors. 501- 184- (9-1 [3280.801]): Reject 9-8.16: Corrects language for proper cite. 370-23(b) is the SUBMrr'rER: Kurt Pugh, State of Oregon correct reference and is a section not an article. RECOMMENDATION: Remove the 800 section of the standard 9-8.18: Section deleted and requirements added to 9-8.14 so dealing with electrical requirements. Adopt current revisions of similar requirements are in the same section for clarity. the NEC. 9-9.4.3: Corrects reference. SUBSTANTIATION: The industry has changed in their electrical 9-11.1(a): Sample calculation shown in Table 9-11.1(c) includes construction. We now parallel site build homes in this area, the laundry load which would be required by the NEC Article 220 There are many safety items not addressed in the 3280, but that are but the text here did not show it. 9-11.2(a) includes this language covered in the NEC. But since the 3280 supersedes the NEC we and it should be shown here as well. Change will provide clarity put our consumers at risk because of this. Also, we need to adopt for the user. new versions of the NEC when they come out, not on a delayed 9-11.1(c): Example shows load for laundry circuit but text does basis. not indicate same. Section 9-11.2(a) does include this language. COMMITTE, E ACTION: Reject. 9-13.2: The requirements for the label are not necessary as the COMMITTEE STATEMENT: The recommendation is to remove installation instructions will contain the required information. the 800 section which is part of the HUD Part 3280 rules, and as 9-15.1: Revised language uses language in NEC Section 200- such is outside of the scope of this committee. 7(c) (2) dealing with reidentification of grounded conductors. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 9 COMMITTEE ACTION: Accept. VOTE ON COMMITTEE ACTION: COMMITTEE STATFaMENT: Acceptance of this proposal will AFFIRMATIVE: 9 more closely align the requirements of NFPA 501, Chapter 9, and the 1999 National Electrical Code, Article 550 and other appropriate articles. The use of standard terminology between the (Log #22) two documents will help eliminate confusion for the users. It is Committee: MAN-ELE recognized that there are many applicable requirements contained 501- 185 - (9-1.1 and 9-1.2 [3280.801(a) and (b)]): Reject in the NEC that do not appear in NFPA 501, however, 9-1.2 SUBMITTER: Albert Endres, Oregon IPIA/SAA provides the necessary guidelines for the user. If this proposal is 2RECOMMENDATION: Revise text to read: accepted, it will serve as the basis for proposals to modify the 2002 (a) Subpart I of this standard and Part A of Article 550 of the NEC which would complete the harmonization process. Once the National Electrical Code /KT~"D&x...... KT o ...... i'TPi ll~rl~ ~,, (current edition). two documents are in parallel, adoption by reference or extraction (b) In addition to the requirements of this standard and Article could be accomplished which would eliminate the problems 550 of the National Electric Code r~,T~DAx...... M^ "m ~r'.n~x, (current caused by the documents being on different revision cycles. This edition). will ultimately help all parties involved with manufactured housing SUBSTANTIATION: By automatically adopting the current NEC. to clarify which set of standards is applicable. It may also be of The industry will be current with site built and will prevent a delay help to HUD for adopting the Part 3280 rules. in HUD standards needing to readopt each code change cycle. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 9 COMMITTEE ACTION: Reject. VOTE ON COMMITTEE ACTION: COMMITTEE STATEMENT: The recommendation is to revise AFFIRMATIVE: 8 the HUD 3280 rules which is outside the scope of this panel. The NEGATIVE: 1 proposal indicates that Sections 9-1.1 and 9-1.2 of NFPA 501 in EXPLANATION OF NEGATIVE: both the 1997 edition and the 1999 draft do not contain dated ZIEMAN: I am voting negative on the following two sections references to NFPA 70, National Electrical Code. contained within Proposal 501-183 (Log #CP500). NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 9 9-3.11 (c) (1): This section calls for the manufacturer to provide VOTE ON COMMITTEE ACTION: written installation instruction requiring that the home be installed AFFIRMATIVE: 9 on a "permanent foundation." In the first place there is no technical reason for this requirement. A manufactured home can safely have service equipment installed on it regardless of the type (Log #80) of foundation it is placed on. I believe this language was picked Committee: MAN-ELE up from the NEC, Article 550. The NEC Article 550 maintains an 501- 186 - (9-2 Feeder Assembly [$280.802(a)(20)]): Reject artificial distinction between "Mobile Home" and "Manufactured SUBMITTER= Frank Walter, Manufactured Housing Inst. (MHI) Home" that does not exist in the HUD standard or the real world. RECOMMENDATION: Delete the definition of Feeder Assembly Secondly, there is no definition of "permanent foundation" thus in Section 9-2 in its entirety: the requirement is unenforceable. No similar language is ...... ! ...... currently in the HUD standard. This section should be deleted. 9-13.2: This section should be left unchanged. Under the new requirement the manufacturer must provide written installation ...... ~, ...... p P f instructions which: 1. Describe the "...location of the outlet box or disconnecting means..." This can change from model to model and within a given model. Thus, the manufacturer will have to provide model submitted to HUD by the MHCSS Consensus Committee on 12-29- and/or home specific installation instructions. 94, but no action has been taken. The 1995 NEC provides a 2. Describe the "ampere rating of the branch circuit conductors definition for "feeder assembly" and since the NFPA 501 Standard provided..." Again, this can change from model to model and references the NEC, this definition is not necessary. within a given model. Thus, the manufacturer will have to provide COMMITrEE ACTION: Reject. model and/or home specific installation instructions. COMMITTEE STATEMENT: There are many definitions that Installation instructions often are not available in the field, appear in both NFPA 501 and NFPA 70. The committee believes especially for older homes where the documents are often lost by that until the two documents are completely harmonized, the home owner. Therefore, it is better to leave the required a~ng those definitions provides guidance to the user. information on a tag/label where it will always be visible and ER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 9 available. VOTE ON COMMITTEE ACTION: In addition, the following editorial comments: AFFIRMATIVE: 9 9-6.40): The last sentence of the added material which addresses receptacles in the face-up position is redundant. This subject is adequately covered in 9-6.7. 9-8.14: The committee did not provide any substantiation for this change.

389 NFPA 501 -- MAY 2000 ROP

(Log #81) circuit breakers or fuses shall be plainly marked "Main". This Committee: MAN-ELE equipment shall contain a solderless type of grounding connector 501- 187- (9-2 Utilization Equipment [3280.802(a)($9)]): Accept or bar for the purposes of grounding with suffident terminals for in Principle all grounding conductors. The neutral bar termination of the SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) ground circuit conductors shall be insulated in accordance with RECOMMENDATION: Revis~ the definition of "Utilization Section 9-9.2- Equipment" in Section 9-2 to read as follows: SUBSTANTIATION: This recommended change was originally Utilization Equipment. Equipment that utilizes electric energy for submitted to HUD by the MHCSS Consensus Committee on 12-29- mccha=zlcal electronic, electromechanical, chemical, heating, 94, but no action has been taken. This change would incorporate lighting, or similar purposes. language that has been adopted by the NEG-1987. SUBSTANTIATION: This recommended change was originally COMMITTEE ACTION: Accept in Principle. submitted to HUD by the MHCSS Consensus Committee on 12-29- COMMITTEE STATEMENT: See Committee Action on Proposal 94, but no action has been taken. This change will incorporate the 501-183 (Log #CPS00). language found in the NEC-1993, a reference standard contained NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 9 in the NFPA 501 Standard. VOTE ON COMMITTEE ACTION: COMMIT]FEE ACTION: Accept in Principle. AFFIRMATIVE: 9 COMMITTEE STATEMENT: See Committee Action on Proposal 501-183 (Log #CP500) which incorporates the proposed language. NUMBER OF COMMrrTEE MEMBERS ELIGIBLE TO VOTE: 9 VOTE ON COMMITTEE ACTION: (Log #85) AFFIRMATIVE: 9 Committee: MAN-ELE 501- 191 - (9-4.6 [3280.804(f)]): Reject SUBMITrER: Frank Walter, Manufactured Housing Inst. (MHI) (Log #82) RECOMMENDATION: Revise Section 9-4.6 to read as follows: Committee: MAN-ELE 9-4.6 The distribution panelboard shall not be located in all 501- 188 - (9-3.4 [$280.803(d)]): Accept in Principle SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) RECOMMENDATION: Revise Section 9-3.4 to read as follows: 9-3.4 A [';:tcd suitable clamp or the equivalent shall be provided at the distribution panelboard knockout to afford strain relief for the cord to prevent strain from being transmitted to the terminals v ...... ~" .~.2:QQ ~cgi'c-.~.. a~¢essible location but shall not be when the power-supply cord is handled in its intended manner. located in a bathroom or clothe, closet. A clear working space at SUBSTANTIATION: This recommended change was originally least 30 in. (762 mm) wide and 30 in. (762 ram) in front of the submitted to HUD by the MHCSS Consensus Committee on 12-29-~* distribution panelboard shall be provided. This space shall extend 94, but no action has been taken. This change will incorporate from the floor to the top of the distribution panelboard. language from the NEG-1987 for power supply conditions to SUBSTANTIATION: This recommended change was originally manufactured homes. submitted to HUD by the MHCSS Consensus Committee on 12-29- COMMITTEE ACTION: Accept in Principle. 94, but no action has been taken. This change will incorporate COMMITTEE STATEMENT: See Committee Action on Proposal language contained in the 1993 NEG. 501-183 (Log #CP500). COMMITTEE ACTION: Reject. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 9 COMMITTEE STATEMENT: The committee believes that VOTE ON COMMITTEE ACTION: acceptance of this proposal would result in the requirement that AFFIRMATIVE: 9 the panelboard shall not be located in an accessible location. The committee does not believe that this is correct. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 9- (Log #83) VOTE ON COMMITTEE ACTION: Committee: MAN-ELE AFFIRMATIVE: 9 501- 189- (9-3.11(b) [3280.803(k)(2)]): Accept in Principle SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) RECOMMENDATION: Revise Section 9-3.11 (b) to read as follows: (Log #86) "9-3.11(b) A= v.ppr~;'¢d A metal raceway or rigid non-metallic Committee: MAN-ELE conduit from the disconnecting means in the manufactured home 501- 192 - (9-5(b) [3280.805(a)(2)]): Accept in Principle to the underside of the manufactured home, with provisions for SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) the attachment of a suitable junction box or fitting to the raceway RECOMMENDATION: Revise Section 9-5(b) to read as follows: on the underside of the manufactured home. The manufacturer (b) Small Appliances. For the small appliance load in kitchens, shall provide in his written installation instructions the proper pantries, dining rooms, and breakfast rooms of manufactured feeder conductor sizes for the raceway and the size of the junction homes, two or more 20-ampere appliance branch circuits, in box to be used; or...". addition to the branch circuit specified in Section 9-5(a), shall be SUBSTANTIATION: This recommended change was originally provided for all receptacle outlets in these rooms, and such submitted to HUD by the MHCSS Consensus Committee on 12-29- circuits shall have no other outlets. P.cccptaclc ~'a'dctz z'app!'~cd b)" 94, but no action has been taken. This change will incorporate the at !e~t t;;r. a ancc rccc c!c ...... language contained in the 1987 NEC. "7. the !'-tchcn. Countertoo recentacle outlets installed in the COMMITTEE ACTION: Accept in Principle. kitchen shall be supplied by not less than two small appliance COMMITTEE STATEMENT: See Committee Action on Proposal branch circuits, either or both of which shall also be permitted tO 501-183 (Log #CP500). NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 9 supply receotacle outlets in the kitchen and other roorrl$ specified VOTE ON COMMITTEE ACTION: Above. AFFIRMATIVE: 9 SUBSTANTIATION: This recommended change was originally submitted to HUD by the MHCSS Consensus Committee on 1-10- 92, but no action has been taken. A kitchen today is equipped with many appliances that were not commonly found in kitchens (Log #84) several years ago. Some common examples are: coffee maker, Committee: MAN-ELE toaster oven, microwave oven, food processor, blender, and deep- 501- 190 - (9-4.3 [3280.804(c)] ): Accept in Principle fat fryer. Many such appliances consume 1000VA or more. Often SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) several such appliances are used at the same time. RECOMMENDATION: Revise Section 9-4.3 to read as follows: Since these applications are generally used on the kitchen 9-4.3 Disconnecting Means. A single disconnecting means shall countertops, the two small appliance circuits should run to the be provided in each manufactured home consisting of a circuit kitchen countertops so that some of the receptacle outlets over the breaker, or a switch and fuses and their accessories installed in a countertops will be connected to each of the circuits, thus readily accessible location near the point of entrance of the supply increasing the number of appliances that can he used at one time. cord or conductors into the manufactured home. The main Either or both circuits may supply receptacle oudets in the kitchen

390 NFPA 501-- MAY 2000 ROP and other rooms specified in this section. This principle was (Log #88) incorporated into the National Electrical Code beginning with the Committee: MAN-ELE 1984 edition. The NEC requires that this principle be followed 501-195 - (9-5(c)(6) (New) [3280.805(a)(3)(vi), New]): Reject regardless of the size of the kitchen. SUBMITFER: Frank Walter, Manufactured Housing Inst. (MHI) COMMITTEE ACTION: Accept in Principle. RECOMMENDATION: Add a new Section 9-5(c)(6.) to read as COMMITTEE STATEMENT: See Committee Action on Proposal follows: 501-183 (Log #CP500). (c) General Appliances (Including furnace, Water Heater, NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 9 Range, and Central or Room Air Conditioner, etc.). There shall VOTE ON COMMITTEE ACTION: be one or more circuits of adequate fating in accordance with the AFFIRMATIVE: 9 following: 1. (Item remains unchanged.) 2. (Item remains unchanged.) 3. (Item remains unchanged.) (Log #119) 4. (Item remains unchanged.) " Committee: MAN-ELE 5. (Item remains unchanged.) 501- 193 - (9-5(b) [3280.805(a)(2)]): Accept in Principle 6. ,All fixed stora~e-typ, e electrical water heaters havin~ a canacitv SUBMITITAh Daniel J. Kissane, Pass & Seymour/Legrand of 120 t,anons or less shall have a~ branch circuit ratin~ not less RECOMMENDATION: Delete: "P.=ccp.~:2= ~::d=.': :-'~pE=~ ~7 == than 12-5 percent of the namenlate rafin~ of the water]aeater.

...... l-t" ...... t" ...... ~ ...... SUBSTANTIATION: This recommencled change was originally submitted to HUD by the MHCLqS Consensus Committee on 1-10- Add the following sentence: 92, but no action has been taken. This requirement for the water "[~fceptacles installed in a kitchen to serve counterton surfaces heater branch circuit rating has been part of the National shall be sunolied by pot less than two small-appliance-branch Electrical Code since before the 1975 edition. The 501 Standard ~;ir~its. nit-bet or both of which shall also be-n~=~rnitted to supply does not clearly define the minimum branch circuit size required l'fceptade outlets in the same kitchen and in other rooms - - for water heaters. However, the industry has been following this mr,~Lat~L" NEC requirement based on correspondence from the SUBSTANTIATION: Revision is consistent with 1999 NEC Manufactured Housing Construction and Standards Division of the Section 210-52(b) (3). Department of Housing and Urban Development clarifying the COMMITTEE ACTION: Accept in Princ|ple. requirements of the HUD Standards. COMMITTEE STATEMENT: See Committee Action on Section 9- COMMITTEE ACTION: Reject. 5(b) in Proposal 501-183 (Log #CPS00). COMMITTEE STATEMENT: The committee does not believe NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 9 that the additional language is necessary. The requirement is VOTE ON COMMITTEE ACTION: covered in Section 422-13 of NFPA 70 which would be applicable AFFIRMATIVE: 9 by the language in Section 9-1.2. The committee is unaware of any confusion within the industry in applying the current language of NFPA 501. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTI~ 9 (Log #87) VOTE ON COMMITTEE ACTION: Committee: MAN-ELE AFFIRMATIVE: 9 501- 194- (9-5(b) Exception (New) [3280.805(a)92)]): Reject SUBMITrER: Frank Walter, Manufactured Housing Inst. (MHI) RECOMMENDATION: Revise Section 9-5(b) to read as follows: (b) Small Appliances. For the small appliance load in kitchens, (Log #89) antries, dining rooms, and breakfast rooms of manufactured Committee: MAN-ELE ~ nines, two or more 20-ampere appliance branch circuits, in 501- 196- (0-6.4(a) [~280.806(d)(1)]): Reject addition to the branch circuit specified in Section 9-5(a), shall be SUBMITrER: Frank Walter, Manufactured Housing Inst. (MHI) provided for all receptacle outlets in these rooms, and such RECOMMENDATION: Revise Section 0-6.4(a) to read as follows: circuits shall hav~ no other outlets. (a) Over or adjacent to counter tops in the kitchen [: ~=-:= :=: Exception No. 1: A receptacle installeci solely for the electrical :n c:.ch :'de cf'.h: =:=2= if the countertops are :: =-..=~ ::~: ----,a.. SuPPlY to and support of an electrical clock in any of the rooms are 12 in. (305 ram) or over in width] so that no points alon~ the wall is more than 94 in. ftlO mmL measured horizontally, from a Exception No. 2: Outdoor receptacles. receptacle outlet in that snace. Island and neninsula counter tom Exception No. 3: A recentacle served bv a circuit sunvlving only 12 in. (305 mml or wider shall have at least-one recevtade for motor loads. each 4 ft (1.29 m~ of counter too. Excevtion No. 4: Recentacles installed to nrovide nower for SUBSTANTIATION: This recommended change was originally submitted to HUD by the MHCSS Consensus Committee on 1-10- electric ignition svstems or clock timers for-~as-4~ed ranges, ovens. 92, but no action has been taken. The cords provided withkitchen or counter-mounted cookin~ units. liances are generally shorter than those provided with other Receptacle outlets supplied by at least two appliance receptacle ~ppome appliances. Therefore, the above proposed change should branch circuits shall be installed in the kitchen. be implemented to avoid the use of extension cords over the SUBSTANTIATION: This recommended change was originally kitchen counters. Also, due to the large number of electrical submitted to HUD by the MHCSS Consensus Committee on 2-28- kitchen appliances often used in homes today, receptacle outlets 96, but no action has been taken. This change incorporates should be required for all counter tops in the kitchen 12 inches permissible exceptions found in the 1993 edition of the NEC, over in width. (Note: This principle was incorporated into the Section 210-52(B) (1). National Electrical Code, 1990 Edition.) COMMITTEE ACTION: Reject. COMMrFFEE ACTION: Reject. COMMITTEE STATEMENT: Exceptions 1 and-4 are currently COMMITTEE STATEMENT: There has been insufficient referenced within the current paragraph of 9-5(b) in the 1999 technical substantiation submitted to indicate that the existing edition as Exceptions 1 and 2 respectwely. There was .no language in NFPA 501 is inadequate. substantiation provided for the addition of Exceptions 2 and 3, and NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 9 the loads specified in these two exceptions are no longer permitted VOTE ON COMMITrEE ACTION: to be connected to the small appliance branch circuits per Section AFFIRMATIVE: 9 210-52(b) (2) of the 1999 edition of the National Electrical Code. NUMBER OF COMMITrEE MEMBERS ELIGIBLE TO VOTE: 9 VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 9

391 NFPA 501 -- MAY 2000 ROP

(Log #90) (Log #93) Committee: MAN-ELE Committee: MAN-ELE 501- 197- (9-6.8 (New) [3280.806(g), New]): Reject 501- 200- (9-8.6 [3280.808(f)]): Reject SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) SUBMITTER: Frank Walter, Manufactured Housing lust. (MHI) RECOMMENDATION: Add a new Section 9-6.8 to read as RECOMMENDATION: Revise Section 9-8.6 to read as follows: follows: %8.6 Where metallic-faceplates are used, they shall be effectively %6.8 A recentacle shall not be installed in a face-un nosition 0tl grounded. any countertoo. SUBSTANTIATION: This recommended change was originally SUBSTANTIATION: This recommended change was originally submitted to HUD by the MHCSS Consensus Committee on 12-2% submitted to HUD by the MHCSS Consensus Committee on 12-29- 94, but no action has been taken. This change incorporates 94, but no action has been taken. This change will incorporate language adopted by the 1993 edition of the NEC. requirements from the 1993 edition of the National Electrical Code COMMITTEE ACTION: Reject. (NEC). COMMITTEE STATEMENT: The proposed changes have been COMMITTEE ACTION: Reject. incorporated into the 1999 NFPA 501 draft. COMMITTEE STATEMENT: The proposed changes have been NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 9 incorporated into the 1999 NFPA 501 draft. VOTE ON COMMITTEE ACTION: NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 9 AFFIRMATIVE: 9 VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 9 (Log #94) Committee: MAN-ELE 501- 201 - (9-8.8 [3280.808(h)]): Reject (Log #92) SUBMITTER= Frank Walter, Manufactured Housing Inst. (MHI) Committee: MAN-ELE RECOMMENDATION: Revise Section 9-8.8 to read as follows: 501- 198 - (9-7.1 and %7.2 [3280.807(a) and (b)]): Accept in %8.8 T ...... r.~,...... Principle in Part ~k~ll k ...... ='~I--A ...=+k ~ I~oI .... + :~.1~1- ----A ^..*.:A~ +k^ k ..... A -- SUBMITTER= Frank Walter, Manufactured Housing Inst. (MHI) zon~u;. ~uz..:ng ~..:.. ~c uzz ...... c ; ...... Where n~d metal RECOMMENDATION: Revise Section 9-7.1 and %7.2 to read as condui~ or intermediate metal conduit is terminated at the follows: enclg~re with a 19cknut and bushin~ connection, two Iocknuts %7.1 Electrical materials, devices, appliances, fittings, and other shall 1~ provide~l, one insi~lg and one outside of the enclosure. equipment installed, intended for use in, or attached to the Rigid nonmetallic conduit or electrical nonmetallic tubing shall be manufactured home shall be approved for the application and permitted. !nz~dc end: of "..he zondu']t zhz2! bc rcz.~cd. All cut shall be connected in an approved manner when in service. ends of conduit or tubinv shall be reamed or otherwise finished to Fac!!itic: Means shall be provided to securely fasten appliances remove Fou~h edges. when the manufactured home is in transit. (See Section %9.) SUBSTAN'rIATI()N: This recommended change was originally %7.2 ~v ...... I ...... v ...... iv ...... v ...... submitted to HUD by the MHGSS Consensus Committee on 12-2% ~h ..... v ...... Pendant-type fixl;~lres 94, but no action has been taken. This change incorporates or pendarlt~ cords shall be listed and identified for the language adopted by the 1987 and 1993 editions of the National interconnection of buildin~ comoonents. Electrical Code. SUBSTANTIATION: This recommended change was originally COMMITTEE ACTION: Reject. submitted to HUD by the MHCSS Consensus Committee on 12-29- COMMITTEE STATEMENT: The proposed changes have been 94, but no action has been taken. This change incorporates incorporated into the 1999 NFPA 501 draft. language from the 1987 and 1990 editions of the NEC. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 9 COMMITTEE ACTION: Accept in Principle in Part. VOTE ON COMMITTEE ACTION: COMMITTEE STATEMENT: The committee Accepts in Principle AFFIRMATIVE: 9 the change to Section 9-7.1. See Committee Action on Proposal 501-183 (Log#CPS00). The committee rejects the proposed change to %7.2 as the words "to interconnect building (Log #95) components" appears to be incorrect in NFPA 70. Committee: MAN-ELE NUMBER OF COMMITrEE MEMBERS ELIGIBLE TO VOTE: 9 501- 202 - (9-8.9(a) [3280.808 (i) (1) ]): Accept in Principle VOTE ON COMMITTEE ACTION: SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) AFFIRMATIVE: 9 RECOMMENDATION: Revise Section %8.9(a) to read as follows: %8.9 Switches shall be rated as follows: (a) For lighting circuits, switches shall hz::c : 19 :.mpcrc, !20 ::. 1o~ ..^,. _.:__ cr h'ghcr ~ nzcdcd for ~c c~:ncctcd !cad. be (Log #91) rated not less than 10 amoeres. 120- to 125-volts. and in no case. Committee: MAN-ELE less than the connected load. 501- 199 - (9-7.3 (New) [3280.807(c)]): Reject SUBSTANTIATION: This recommended change was originally SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) submitted to HUD by the MHCSS Consensus Committee on 12-29- RECOMMENDATION: Revise Section 9-7.$ to read as follows: %7.$ Where a lighting fixture is installed over a bathtub or in a 94, but no action has been taken. The change incorporates language adopted by the 1990 edition of the National Electrical shower stall, it shall be of =.he znzlczcd =nd g~kctcd %~c listed for wet locations. [See also Article 410-4(d) of NFPA 70, National Code. Electrical Code.] COMMITTEE ACTION: Accept in Principle. SUBSTANTIATION: This recommended change was originally COMMITTEE STATEMENT: See Committee Action on Proposal 501-183 (Log #CPS00). submitted to HUD by the MHCSS Consensus Committee on 2-28- 96, but no action has been taken. The wording "of the enclosed NUMBER OF COMMITrEE MEMBERS ELIGIBLE TO VOTE: 9 and gasketed type" is not definitive and may be redundant: "listed VOTE ON COMMITTEE ACTION: for wet locations" is sufficient by itself. AFFIRMATIVE: 9 COMMITTEE ACTION: Reject. COMMITTEE STATEMENT: The proposed changes have been incorporated into the 1999 NFPA 501 draft. NUMBER OF COMMITTEE MFaMBERS ELIGIBLE TO VOTE: 9 (Log #171) VOTE ON COMMITTEE ACTION: Committee: MAN-ELE AFFIRMATIVE: 9 501- 203 - (%8.10 [3280.808(j)]): Reject SUBMITrER: Dick Veenstra, Fleetwood Enterprises RECOMMENDATION: Revise text as follows: "At least ~ :.n. {152 ..-rim) 4 in. (102 ram) of free conductor shall be left at each outlet box." SUBSTANTIATION: NFPA NEC 550-10(h) requires 4 in. of free conductor as does 3280.8070). COMMITTEE ACTION: Reject.

392 NFPA 501 -- MAY 2000 ROP

COMMITTEE STATEMENT: Section 550-10(h) was deleted in the spaces greater than 1/8 in. (3.18 mml at the edge of the outlet 1996 edition of NFPA 70, National Electrical Code. The current box." requirement specifies not less than six inches of free conductor. SUBSTANTIATION: The deleted sentence is a requirement - NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 9 covered by 9-8.18 [3280.808(r)]. The new sentence is consistent VOTE ON COMMITTEE ACTION: with 1999 NEC Section 370-21. AFFIRMATIVE: 9 COMMITTEE ACTION: Accept in Principle. COMMITTEE STATEMENT: See Committee Action on Proposal 501-183 (Log #CP500). NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 9 (Log #96) VOTE ON COMMITTEE ACTION: Committee: MAN-ELE AFFIRMATIVE: 9 501- 204 - (9-8.11 [3280.808(k)] ): Reject SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) RECOMMENDATION: Revise Section 9-8.11 to read as follows: 9-8.11 When outdoor or under-chassis line-voltage (120 volts. (Log #121) nominal, or hi~her) wiring is exposed to moisture or physical Committee: MAN-ELE damage, it shall be protected by rigid metal conduit or 501- 207 - (9-8.18 [3280.808(0] ): Accept in Principle intermediate metal conduit. The conductors shall be suitable for SUBMITTER: Daniel J. Kissane, Pass & Seymour/Legrand wet locations. Electrical metallic tubing or rigid nonmetallic RECOMMENDATION: Add the following sentence: conduit shall be permitted to be used when closely routed against "In wall~ or ceilinws of noncombustible material, outlet boxes frames and equipment enclosures. shall be installed so that the fi'ont ed~re of the box will not be set SUBSTANTIATION: This recommended change was originally back of the finished surface more than 1/4 in. (6.35 mmL" submitted to HUD by the MHCSS Consensus Committee on 12-29- SUBSTANTIATION: ~Revision is consistent with 1999 NEC 370-20. 94, but no action has been taken. This change incorporates COMMITTEE ACTION: Accept in Principle. language adopted by the 1987 and 1990 editions of the National COMMITrEE STATEMENT: See Committee Action on Proposal Electrical Code. 501-183 (Log #CP500). COMMYIq'EE ACTION: Reject. NUMBER OF COMMITITEE MEMBERS ELIGIBLE TO VOTE: 9 COMMITTEE STATEMENT: The proposed changes have been VOTE ON COMMITTEE ACTION: rated into the 1999 NFPA 501 draft. AFFIRMATIVE: 9 R OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 9 VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 9 (Log #98) Committee: MAN-ELE 501- 208 - (9-9.4.3 [3280.809(d)(3)] ): Accept in Principle (Log #97) SUBMITrER: Frank Walter, Manufactured Homing Inst. (MHI) Committee: MAN-ELE RECOMMENDATION: Revise Section 9-9.4.3 to read as follows: 501- 205 - (9.8.15 [3280.808(0)]): Accept in Principle 9-9.4.3 Metallic gas, water, and waste pipes and metallic air- SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) circulating ducts shall be considered bonded if they are connected RECOMMENDATION: Revise Section 9-8.15 to read as follows: to the terminal on the chassis (see Section 9.9A.1) by clamps, by 9-8.15 Outlet boxes shall fit closely to openings in combustible walls and ceilings and shall be flush with such surfaces. In walls solderless connections, or by suitable grounding-type straps. SUBSTANTIATION: This recommended change was originally and ceilin~ of noncombustible material, outlet boxes and fittinus submitted to HUD by the MHCSS Consensus Committee on 1-10- shall be installed so that the front edue of the box or fittin~ will not 92, but no action has been taken. The reference is incorrect and be set back from the finished surface more than 1/4 in. (6 mm). should be ~:hanged to Section 9.9.4.1. Section 550-9(c) of the 1975 Plaster. drywall or nlasterboard surfaces that are broken or National Electrical Code, from which the 501 Standard was incomnlete shall be repaired so that there will be no wans or onen derived, substantiates this proposed reference revision. snaces ~reater than 1/8 in. (3 mm) at the edue of the-box or CO MITIT. ACTION: Accept in Principle. fitting. COMMITTEE STATEMENT: See Committee Action on Proposal 501-183 (Log #CP500). This requirement is currently found in SUB,~TANTIATION: This recommended change was originally Section 550-11 (c)(3) of the 1999 edition of NFPA 70. submitted by the MHGSS Consensus Committee on 1-10-92, but no NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 9 action has been taken. The 501 Standard currently does not VOTE ON COMMITTEE ACTION: address the requirements for installing an outlet box in AFFIRMATIVE: 9 noncombustible material. Therefore, in accordance with Section 9-1.2, the requirements of the 1984 National Electrical Code should be followed. However, the 1984 NEC does not provide a tolerance for the gap at the edge of a box in walls or ceilings of (Log #181b) noncombustible material. The 1987 edition of the NEC was Committee: MAN-PLU changed to address this issue. This proposal reflects the 501- 209 - (9-10.1 and 9-10.2 [3280.810(a) and $280.810(b)] ): requirements of the 1987 NEC, which the MHCSS committee Reject reviously recommended for adoption. TCC NOTE: The Technical Correlating Committee on OMMITTEE ACTION: Accept in Principle. Manufactured Housing (MAN-AAC) directs that a public COMMITTEE STATEMENT: See Committee Action on Proposal comment be submitted in the Correlating Committee's name 501-183 (Log #CP500) which incorporates the proposed revision. requesting that the Technical.... Committee on Electrical for NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 9 Manufactured Housing (MAN-ELE) revmw thts proposal. This VOTE ON COMMITTEE ACTION: proposal was inadvertently assigned to the Technical Committee AFFIRMATIVE: 9 on Plumbing for Manufactured Housing which does not have Jsurlsdietion on this section of NFPA 501. UBMITTER: Dan Butterfield, Fleetwood Enterprises Inc. RECOMMENDATION: Add the following new text: (Log #120) "Test shall be reconducted when renair work occurring in the Committee: MAN-ELE 501- 206 - (9-8.t5 [3280.808(0)]): Accept in Principle vicinity of tested system has the ootential to damage system." SUBMITTER: Daniel J. Kissane, Pass & Seymour/Legrand SUBS1"ANTIATION: Will improve quality of product, reduce RECOMMENDATION: Delete: "Outlet baxcs sha!l fit c!o:c! 7 to service/warranty costs and improve customer satisfaction COMMITTEE ACTION: Reject.

.... l~ o,,,-¢ .... " COMMITTEE STATEMENT: The proposal is vague and will Add the following sentence: create difficulty in the manufacturing and enforcement "Plaster. drywall, or nlasterboard surfaces that are broken or community. The term "vicinity" is not defined and open to diverse incomnlete shall be renalred so there will be no wads or onen interpretation. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 6

393 NFPA 501 -- MAY 2000 ROP

VOTE ON COMMITTEE ACTION: is simply no reasonable method to accurately measure degradation AFFIRMATIVE: 6 of the home. During and following transportation, minor deficiencies are usually corrected on the spot (e.g., blown tires are replaced in transit andany panels that may have come loose are restored to their correct alignment during the set-up process). (Log #99) Industry asserts that it has no major transportation problems in Committee: MAN-ELE moving homes from factories to homesites. 501- 210 - (9-13.2 [3280.813(b)]): Accept in Principle COMMITTEE ACTION: Accept. SUBMITTER: Frank Waiter, Manufactured Housing Inst. (MHI) NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 RECOMMENDATION: Revise Section 9-13.2 to read as follows: VOTE ON COMMITTEE ACTION: 9-1fi.2 A manufactured home provided with a branch circuit AFFIRMATIVE: 13 designed to energize outside heating equipment.~'z~/or air- conditioning equipment, or both. located outside the manufactured home, other than room ~ir-conditionlng. shall have a recta! tag such branch circuit conductors terminate in a listed (Log #101) Committee: MAN-STR outlet box. or disconnectin~ means, located on the outside of the 501-212- (10-2 Chassis, Drawbar and Coupling Mechanism, manufactured home. A label shall be permanently affixed, in a Frame, Highway, Lights, Running Gear Assembly, Transportation location adjacent to the outlet box. or disconnecting means, and System [3280.902(a) through (g)]): Reject contain the following information: that reads as follows: SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) THIS CONNECTI()N IS FOR LI~ AIR- RECOMMENDATION: Revise Section 10-2 to read as follows: CONDITIONING EQUIPMENT. THE BRANCH CIRCUIT IS 10-2 Definitions. The following definitions shall apply to Chapter RATED AT NOT MORE THAN AMPERS, AT _VOLTS, 60 HZ _ 10 only. CONDUCTOR AMPACITY. A DISCONNECTING MEANS Chassis. -v,. .... : ...... : ...... :~:_~ .,.^ Fnll.**A.a .*.k..,.# .... A ..... k .... A ..... 11 ..... i,~l.~ ¢ .... SHALL BE LOCATED WITHIN SIGHT OF THE ?~PLY~.~CE

...... : ...... 6 0 ...... ~., .... 1' ...... ~ *:mr**. 6 .... The substructure which The correct voltage and ampere ratings shall be given. The tag provides support to the manufactured home structure during shall not be less than 0.020-in. (0.5-mm), etched brass, stainless transnort: and also nrovides a nlatform for securement of the steel, anodized or aiclad aluminum or equivalent, or other running wear. the drawbar and counlin~ mechanism. roved material [e.g., 0.005-in. (0.1 mm) plastic laminates]. Drawl~aJ- and Coupling Mechanism. q~he rigid assembly (usually ~phPe tag shall not be less than 3 in. x 1-3/4 in. (76mm x 44 mm) an A frame) where the coupling mechanism is mounted that minimum size. connects the manufactured home's £'~c substructure to the SUBSTANTIATION: This recommended change was originally towing vehicle. submitted to HUD by the MHCSS Consensus Committee on 2-28- Frame. -ft.^ ¢^~--:....a fig!.~ ...L...... ~at v...... -',4- 96, but no action has been taken. The current tag wording contained in Section 9-13.2 is obsolete and inconsistent with the rating plate information provided on modern air-conditioning equipment per Article 440 of the NEC. ~v..--6 ...... Substructure means the metallic or The current method of calculating the required branch circuit nonmetallic base of the home. capacity for air-conditioning equipment (see Article 440-33) was Highway. Includes all roads and streets to be legally used in first incorporated in the NEC in the 1971 edition. Article 210-2 was transporting the manufactured home. also revised in the 1971 edition to specify the use of Article 440 to size branch circuits supplying air-conditioning equipment. app!icabl= U.S. Dcpa.-~cnt ~f Tmn=p~rta'.2~n rcgu!afi~n:. In the 1978 NEC edition, the tag required by Article 550-13(b) Running Gear Assembly. The subsystem consisting of sus'pension was revised to be consistent with the above noted changes made in springs, axles, bearings, wheels, hubs, tires, and brakes, with their 1971. Apparently, the tag required by Section %13.2 has never related connecting hardware. been updated. The tag wording contained in the current 550- Transportation System. re^^ ,4_c.~:.:^_ ~¢ ,,r.~.~..:.,,x Those 13(b) is appropriate. It permits the installer of remote air- conditioning and/or heating equipment to simply compare the structural components which nrovide sunoort during rating of the branch circuit provided in the home with minimum transnortation, in addition to the chassis, such as other framework, circuit capacity called for on the equipment rating plate. drawbar, counling mechanism, and running gear assembly: also This change will make 9-13.2 consistent with the current NEC lights and associated wiring. Article 550-13(b). SUBSTANTIATION: This recommended change was originally COMMITTEE ACTION: Accept in Principle. submitted to HUD by the MHCSS Consensus Committee on 12-26- COMMITTEE STATEMENT: See Committee Action on Proposal 90, but no action has been taken. This change appropriately 501-183 (Log #CP500) which deletes the requirements for the defines the relationship between the home and the transportation external label, but requires the basic information to be contained system. in the written installation instructions. Definitions are revised to update the 501 Standard and facilitate NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 9 the development of innovative substructures. VOTE ON COMMITTEE ACTION: COMMITTEE ACTION: Reject. AFFIRMATWE: 9 COMMITTEE STATEMENT: The substantiation did not provide adequate details associated with the proposed changes to the definitions and their overall applicauon as used in this chapter. It was also not documented that there is a need or it is necessary to (Log #100) revise the current definitions being used today. Committee: MAN-STR NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 501- 211 - (10-1 [3280.901]): Accept VOTE ON COMMITTEE ACTION: SUBMITTER: Frank Walter, Manufactured Housing Inst. (MHI) AFFIRMATIVE: 13 RECOMMENDATION: Revise Section 10-1 to read as follows: 10-1 This chapter shall cover the general requirements for designing the structure of the manufactured home tc f'.=!!y (Log #102) Committee: MAN-STR 501- 213 - (10-3 [3280.903]): Accept in Principle in Part SUBMITTER: Frank Waiter, Manufactured Housing Inst. (MHI) transDortation. RECOMMENDATION: Revise Section 10-3 to read as follows: SUBSTANTIATION: This recommended change was originally 10-3 General Requirements. The manufactured home and its submitted to HUD by the MHCSS Consensus Committee on 12-26- transnortation system (as defined above) shall withstand the effects 90, but no action has been taken. The current scope contains of hi~rhwav movement such that the home is canable of bein~r - v unnecessary performance requirements without substantiation. transnorted safely and set uo as a habitable stru~;ture. Plumbing, For example, it is meaningless to indicate that the home shall mechanical and electrical svster~s must function after set-uo. The withstand the effects of transportation without degradation. There

394 NFPA 501 -- MAY 2000 ROP home shall remain weather nrotected during the transnortadon A-2.2 Floor load, a minimum of 3 pounds per square foot. seouence to orevent internal damage. Suitability of the A-2.3 Dynamic loading effect, (0.25)[(A-2.1) + (A-2.2)]. transoortation system and home structure to withstand the effects However, the in-transit design loading need not exceed twice the of transoortation shall be nermitted to be determined bv either dead load of the manufactured home. exoerience, testing, or engineering analysis, or a combination of A-$ Design Considerations. To determine the adequacy of individual longitudinal structural components to resist the in- anv of the above. transit design loading, a load distribution based on the relative 10-3.1 The m~.~f=ct~re~ home :h~! be ~efgnea.a., != te..'~..: cf "~ flexural rigidity and shear stiffness of each component shall be permitted to be utilized. For the purpose of loading distribution, the side wall shall be permitted to be considered to be acting as a "deep beam" in conjunction with other load carrying elements in Experience. Documented evidence such as service records or determining the relative stiffness of the integrated structure. other documents certified to by duly authorized nersonnel of the Further, by proper precambering of the chassis assembly, manufacturer is accentable for comnliance with this section when additional loading shall be permitted to be distributed to the failures related to transnortation system damage and body failur~ chassis, and the remaining loading shall be permitted to be due to transnortation loading do not exceed 1-nercent of the total distributed to each of the load carrying components by the relative number of units ("floors") transnorted unon tlae chassis. Latent stiffness principle. A-3.1 In addition, the analysis shall be permitted to include damage failures which cause cracked windows and doors, flgqr consideration for: misallgnment, etc.. resulting from nrimarv or secondary (a) Location of openings in the side wall during transport and, movement, which are not related to imnroner siting or leveling of - v when appropriate, provisions for the manufactured home or loading in excess of the manufacture's reinforcement of the structure and/or chassis at the opening. recommendations during transport of the manufactured home. (b) Side wall component member sizing and joist-splice analysis v shall be included in determinin~ the 1 nercent maximum failure (i.e., top plate, etc.), and connections between load carrying level. If the manufacturer does not have or cannot nrovide actual elements. records of latent damaEe history, the manufacturer shall orovide a SUBSTANTIATION: This recommended change was originally statement that. to the manufacturer's knowledge, no latent damage submitted to HUD by the MHCSS Consensus Committee on 12-26- 90, but no action has been taken. Section 10-3 is revised to ensure has occurred as a result of transportation. that manufactured homes and their transportation system are 10-3.2 P=~c=!ar =ttc=~c= =ha!! bc g'vc= W. ==-,=".=tr2=':g watc:~=g!~t capable of resisting normal forces resulting from highway transportation. A portion of Interpretative Bulletin J-1-76 is incorporated into this section to codify requirements for establishing experience data, which meets the intent of the regulation. Editorial Note: Incorporation of Interpretative Bulletin J-1-76. Testing. Testing shall be permitted to be accomplished using Section A was revised and incorporated into Section 10-3.1 annrooriate methods annroved bv the design annroval nrimarv [3280.903(a)]. Section B was retained as a new Appendix I above, insnection agency. retitled as, "Structural Calculation Guidelines for In-Transit 10-3.3 E"~cr ~f ".he fcllc;':'ag :h~! bc :cccFtc~ !: p!:cc cf := Conditions for Manufactured Homes," as a guideline. The word c:g':ccri~g a=aly~is. "mobile", when it appears was changed to "manufactured." [.x r~...... ~A .^~,.~1.., a~.- ^, ....',^k,^ k.'--k ..... "~" "..hat See the companion change to Section 10-4 [3280.940]. Section C ;':crc coad=ctc~ to. =im'.:!ate ".r=~.=p~r'='-c= !cr~a~ =~d cc.na-.ition~ was revised and incorporated into 10-4.2.6 [3280.904(b)(6)]. Section D was revised and incorporated into 10-4.2.8 [3280.904(b) (8)]. Sections E and F were incorporated into 10- Engineering Analvsis. Engineerin~ analysis methods, based on 4.2.9 [3280.904(b) (9) I. the rational annlication of nrincinles of mechanics and on 0~t~ COMMITrEE ACTION: Accept in Principle in Part. which shall be nermitted to be taken from successfully transpQI'~¢0, Revise 10-3, add a new appendix note for 10-3.3, and create a new homes shall be nermitted to be develoned to sunnort adeouacv of Appendix B to read as follows: 10-3 General Requirements. The manufactured home and its the transnortation system. See Anoendix h "Structural transportation system (as defined above) shall withstand the effects Calculations Guidelines for In-T~-nsit Conditions for of highway movement such that the home is capable of being Manufactured Homes." transported safely and set up as a habitable structure. Plumbing, APPENDIX I mechanical, and electrical systems must function after set-up. The (Underlining omitted for clarity) home shall remain weather protected during the transportation Section 10-3.2 [3280.903(b) ] - 10-4.2.3 [3280.904(b) (3) ] sequence to prevent intemaldamage. Suitability of the Structural Calculation Guidelines for In-Transit Conditions for transportation system and home structure to withstand the effects Manufactured Homes of transportation shall be permitted to be determined by either A-1 General. The following engineering guidelines are experience, testing, or engineering analysis, or a combination of descriptive of methods and design assumptions which shall be any of the above. permitted to be used for analytical evaluation of in-transit loading 16-3.1 Experience. Documented evidence such as service conditions. These guidelines have been developed with emphasis records or other documents certified to by duly authorized on the design of the longitudinal structural components of the personnel of the manufacturer is acceptable for compliance with manufactured home (e.g., main chassis girder beam, the sidewall, this section when failures related to transportation system damage rim joist, etc.), as transportation Ioadings are ordinarily critical in and body failure due to transportation loading do not exceed 1 the longitudinal direction. However, all elements necessary to the percent of the total number of units ("floors") transported upon structural integrity of the manufactured home during in-transit the chassis. Latent damage failures which cause cracked windows loading are to be evaluated (e.g., transverse chassis and floor and doors, floor misalignment, etc., resulting from primary or framing members, drawbar, etc~). HUD recognizes the complexity secondary movement, which are not related to improper siting or and variety of design assumptions and techniques which shall be leveling of the manufactured home or loading in excess of the permitted to be used in evaluating in-transit loading conditions manufacturer's recommendations during transport of the and provides these guidelines as initial methods for determining manufactured home, shall be included in determining the 1 compliance with this section. Due to this variation and complexity percent maximum failure level, ff the manufacturer does not have of assumptions, HUD has undertaken as part of its transportation or cannot provide actual records of latent damage history, the research study, the development of analytical methods for manufacturer shall provide a statement that, to the mannfacturer's predicting the dynamic response of the manufactured home to in- knowledge, no latent damage has occurred as a result of transit load. transportation. A-2 Design Methods and Assumptions - Design Loading. The 10-3.2 Tests shall be witnessed by an independent licensed, summation of the following Ioadings shall be permitted to be used professional engineer or architect, or by a recognized testing to determine the adequacy of the chassis in conjunction with the organization. Such testing procedures shall become part of the manufactured home structure to resist in-transit loading: manufacturer's approved design. A-2.1 Dead load, the vertical load due to the weight of all 10-3.3" Engineering Analysis. Engineering analysis methods, structural and non-structural components of the manufactured based on the rational application of principles of mechanics and home at the time of shipment. on data which shall be permitted to be taken from successfully

395 NFPA 501 -- MAY 2000 ROP transported homes shall be permitted to be developed to support (Log #115) adequacy of the transportation system. Committee: MAN-STR 501- 214- (10-3 and 10-4 [3280.903 and 3280.904] ): Reject .4.-10-3.3 Additional information for engineering analysis can be TCC NOTE: The Technical Correlating Committee on found in Appendix B, Structural Calculation Guidelines for In- Manufactured Housing (MAN-AAC) directs that a public Transit Conditions for Manufactured Homes. comment be submitted in the Correlating Committee's name requesting that the Technical Committee on Strucutral for New Appendix B: Manufactured Housing (MAN-STR) review the ,Committee's statement and provide a greater technical substantiation for the Appendix B Structural Calculation Guidelines for In-Transit reasons for rej¢ction of this proposal. The current statement does Conditions for Manufactured Homes not provide adequate justification for a reviewer to determine why the proposal was rejected. B-I General. The following engineering guidelines are SUBMITrER: Michael L. Zieman, RADCO descriptive of methods and design assumptions which shall he RECOMMENDATION: 1. Delete entire section 10-3 [3280.903] permitted to be used for analytical evaluation of in-transit loading 2. Rename existing section 10-4 [3280.904] as follows and conditions. These guidelines have been developed with emphasis renumber sections as necessary: on the design of the longitudinal structural components of the "Spcc~c General Requirements." manufactured home (e.g., main chassis girder beam, the sidewall, 3. Revise the text of existing section 10-4.2.3 Chassis rim joist, etc.), as transportation loadings are ordinarily critical in [3280.904(b) (3)] as follows: the longitudinal direction. However, all elements necessary to the "The chassis, in conjunction with the manufactured home structural integrity of the manufactured home during in-transit structure, shall be dcz'gncd a.qd constructed to effectively sustain loading are to be evaluated (e.g., transverse chassis and floor the designed loads, cc.nt.!t.~ng c.f "..he dc^.~,a Ic.-.~~ p!'-~ = m'n'm'..:m of framing members, drawbar, etc.). HUD recognizes the complexity .....9 pound: per ~quar: fc~= flocr ,^~a, ~.6.,t^- frccztz_'zd!ng .~.~, and variety of design assumptions and techniques which shall be rCr'gcratcr, and !cc:e fu:_'t~:re) ~_a .~...... ~ ...... a a .... :~ permitted to be used in evaluating in-transit loading conditions ...... t ~ ...... t" ..... ! ...... and provides these guidelines as initial methods for determining ...... The mtegcated structure .... b.. compliance with this section. Due to this variation and complexity shall be capable of ensuring the ,~'~'a:.6.~.1.... -- ...... A ...... _1 integrity of of assumptions, HUD has undertaken as part of its transportation the complete manufactured home =~-~ct=rc and ensuring against research study, the development of analytical methods for excessive deformation of the structural or finish members dar!ng predicting the dynamic response of the manufactured home to in- transit load. "..he"~endzd !'~: ~f the h~mc. SUBSTANTIATION: Home design for successful transportation B-2 Design Methods and Assumptions - Design Loading. The is as much or more an "Art ~ than it is a "Science". It is widely summation of the following loadings shall be permitted to be used to determine the adequacy of the chassis in conjunction with the recognized that the output of any analytical design method is entirely dependent on the assumptions one makes on the front manufactured home .structure to resist in-transit loading: end. In other words you can get what ever answer you want by B-2.1 Dead load, the vertical load due to the weight of all structural and non-structural components of the manufactured using the right "assumptions" or input. HUD recognized this home at the time of shipment. when they stated the follow in their 1976 interpretative Bulletin J-1- B-2.2 Floor load, a minimum of 3 pounds per square foot. 76: B-2.3 Dynamic loading effect, (0.25) [ (B-2.I) + (B-2.2)]. "HUD recognizes the complexity and variety of design assumptions and techniques which may be used in evaluating in- However, the in-transit design loading need not exceed twice the dead load of the manufactured home. transit loading conditions... Due to this variation and complexity B-3 Design Considerations. To determine the adequacy of of assumptions, HUD has undertaken as part of its transportation individual longitudinal structural components to resist the in- research study, the development of analytical methods for predicting the dynamic response of the mobile home to in-transit transit design loading, a load distribution based on the relative flexural rigidity and shear stiffness of each component shall be loading." permitted to be utilized. For the purpose of loading distribution, Twenty-three years later we can state that HUD failed in its the side wall shall be permitted to be considered to be acting as a attempt to develop such an analytical method. The research which "deep beam" in conjunction with other load carrying elements in HUD undertook in the late 1970s could not identify a sound determining the relative stiffness of the integrated structure. engineering approach for analytical analysis of transportation. It is about time we faced reality and remove the deadwood from is Further, by proper precambering of the chassis assembly, additional loading shall be permitted to be distributed to the section of the standard. The 1 percent letters as allowed by J-l-76 chassis, and the remaining loading shall be permitted to be are a joke as well as totally unnecessary. Transportation "test" have distributed to each of the load carrying components by the relative also become highly contentious with most parties disagreeing as to stiffness principle. exactly what changes in design should trigger such a "test." Also, B-$.I In addition, the analysis shall be permitted to include the word "test" is a misnomer as these are not really scientific experiments with controlled variables. These "tests" are also consideration for: (a) Location of openings in the side wall during transport and, statistically invalid as only one specimen is "tested". when appropriate, provisions for reinforcement of the structure The modular housing industry also transports their products over and/or chassis at the opening. the highways. Some modulars are transported on low-boy trailers. (b) Side wall component member sizing and joist-splice analysis However, many modulars are transported on tl~eir own integral (i.e., top plate, etc.), and connections between load carrying running gear. The modular industry has never had any elements. requirement to "Design the structure to withstand transportation COMMITTEE STATEMENT: The committee accepted the shock and vibration", yet they and their consumers seem to do just proposal except for 10-5.2. 10-~,.2 was revised to be consistent with fine. the verbiage that is used in 4-3.6 for test procedures. This revision The attempt to regulate this aspect of transportation dates back to should met the suhmitter's intention. The reference to Appendix I pre HUD times and has failed miserable. However, the of the proposal was moved to Appendix A because it is a reference marketplace has been very successive in helping to assure that to a guideline which is non-mandatory material. manufactured homes can be transported without experiencing NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 structural degradation. The simple truth is manufactures can not VOTE ON COMMITTEE ACTION: afford to product homes which experience structural failures in AFFIRMATIVE: 13 transportation. Let's continue to let the marketplace function and eliminated these outdate, burdensome, unenforceable, unscientific and unproductive requirements. COMMITTEE ACTION: Reject. COMMITTEE STATEMENT: The Committee Action is for consistency with the action taken on Proposal 501-213 (Log #102) and Proposal 501-215 (Log #103). Please see these proposals for complete Committee Action. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 13

396 NFPA 501 -- MAY 2000 ROP

COMMENT ON AFFIRMATIVE: supporting the runnine gear ~! "..he design loads z: v'afi!ned :.n !9 T~CKER: The Committee Statement is not adequate as it does ~.2.E without exceeding maximum allowable stresses for design not provide any technical basis for rejecting the proposal. The spring assembly manufacturer. The capacity of the spring system Committee's action on proposals 501-21S (Log #102)and 501-215 shall ensure that under maximum olSerating load conditions (Log #103) do not appear to meet the submitter's intent. sufficient clearance shall be maintained between the tire and manufactured home's f:'m..e vr substructure to permit unimpeded wheel movement and the changing of tires. 10-4.2.6 Axles. Axles and their connecting hardware shall be (Log #10S) capable of ...... ~, ~--'! of ".he dc:!gn !czdz !n !O 4.2.3 Committee: MAN-STR suppordn~ the running gear desima loads without exceeding the 501- 215 - (10-4 [$280.904]): Accept in Principle in Part maximum allowable :'we-de: for design axle tlfe loads as SUBMITTER: Frank Waiter, Manufactured Housing Inst. (MHI) RECOMMENDATION: Revise Section 10-4 to read as follows: recommended by the axle manufacturer. The number and load 10-4 Specific Requirements. caPacitY of axles requ@cd necessary to provide a safe tow and =^^'~ 10-4.1" System Requirements. The caste transportation system ...... shall ...... d ...... y (fra..-nc, dra;.-~ar and ce.upPZng ..-qccha.n':..~, running gear a::e..'n~ly, cng'nccr'ng m'za!)'z!z. Th~:c z!tcrnafi'.'c: !':ted !n 10 ~.~ ~hal! bc and !:ghtg) shall be designed and constructed as an inte~ratedr ~erm'tted te he ~cce~te~ "='. ~!=ce ef =ueh z~anz2)z'z not be less ~a!anced, and du.~ble unit that is safe and suitable for Its specific than those reauired to support the design load. use ...... ~ ...... me. In operaUon, the transportation system, ~rv ..... ~ ...... ed [Editorial Note: Section 10-4.2.6.1 was excerpted from Section C. hczn..c zt:~dcturc a.nd :.~ contcn~, shall effectively respond to the of Interpretative Bulletin J-1-76, which was r~scinded and removed control of the b~.2'dng :','h~le L-~-'z'ing =t ~Fl!.~ble towing vehicle by HUD on February 18, 1998, effective November 16, 1998.] tracking and braking, while travelin~ at applicable highway speeds and in normal highway traffic conditions. 10-4.2.6.1 Unless substantiated in the desigll to the sati~Bction of (NOTE: While the majority of manufactured homes utilize a the approval a~encv (DAPIA) by either engineering analysis, load fabricated steel substructure, upon which the manufactured home tests or documented evidence of actual transportation experience. structure is considered, it is not the intent of this Standard to limit there shall be no less than the foUowing minimum number of 6000 innovation. Therefore, other ctmponents, such as integrating the lb (2722 k~l rated axles with not less than the rated tire indicated substructure function into the manufactured home structure, are in Table 10-4.2.6.1.1 and Table 10-4.2.6.1.2. 9n each floglr ~ection. acceptable, provided that such design meets the intent and requirements of the Section 10-4.) 10-4.2 System Component Requirements. Table 10-4.2.6.1.1 10-4.2.1 Drawbar. The drawbar shall be constructed of sufficient strength, rigidity, and durability to safely withstand those dynamic No. of 6000 Ib forces experienced during highway transportation. It shall be (2722 k~) rated securely fastened to the manufactured home f:"~e substructure, axles equipp~l with 7 x 14.5 MH 10-4.9.2 Coupling Mechanism. The coupling mechanism, 8-ply rated tires usually of the socket type, shall be securely fastened to the drawbar in such a manner as to ensure safe and effective transfer of the 12 ft (3.66 m~ wide: maximum loads, including dynamic loads, between the To 60 fl (18.$ m~ maximum manufactured home structure and the hitch-assembly of the towing Greater than 60 ft (18.S m) t0 80 ft vehicle. The coupling shall be equipped with a mar~ually operated (24.4 m) maximum mechanism so adapted as to prevent disengagement of the unit while in operation. The coupling shall be designed so that it can 14 ft (4.3 ml wide: be disconnected, regardless of the angle of the manufactured To 52 ft (15.8 m/ maximum home to the towing vehicle. ~(.r'.~ "~c man'.:fact'drcd he.~c pax~-cd To 76 ft (23.2 ml maximum To 80 ft (24.4 m/ maximum ...... 4 1 .... ! ~Len~th of hoine including drawbar. 10-4.2.3 Chassis. The chassis, in conjunction with the manufactured home structure, shall be designed and constructed to effectively sustain the designed loads consisting of the dead load Table 10-4.2.6.1.2 plus a minimum of 3 lb/ft ~ (143 Pal floor load (e.g., free-standing range, refrigerator, and loose furniture) and the superimposed No. of 6000 lb dynamic load resulting from highway movement, but shall not be (2722 k~) V~t~cl required to exceed twice the dead load. The !ntcg~-tcd ~":~*'~ axles equipped with thc ccmp!ctz m^~nufazt'arcd hcmc :trucrarc and cn~uring ag^,~n~ 8 x 14.5 MH dcforma*don .of str'actura! c,r ,qn!zh membcTo d'-ring the intended 8-ply or 10-ply rated !'fc .~f the home. firm 10-4.2.4 Running Gear Assembly. 12 ft (3.66 m) wide: 10-4.2.4.1 ~~ v ...... ~ ~ ...... ~ ...... To 65 ft (19.8 m/ maximum Greater than 65 ft (19.8 m/ to 80 ft (24.4 m) maximum 3 The design load used to size running gear componeqts shall be l~he ~ross shipping weight minus the static tongue weight suppo[~¢d bY 14ft (4.S m/ wide: the drawbar. -It- Running gear shall be designed to accept shock To 56 ft (17.1 m/ maximum 2 " and vibration from the highway and the towing vehicle and to Greater than 56 ft (17.1 m) to effectively dampen these forces so as to protect the manufactured 80 ft (24.4 m) maximum _3 home structure from damage and fatigue. The component of the XLen~h of home including drawbar, running gear assembly shall be designed to facilitate routine maintenance, inspection, and replacement. Determination of the number of axles reauired by use of d~¢ 10-4.2.4.2 Location of the running gear assembly shall be above tables does not eliminate the requirement for each axle to determined by documented engineering analysis, taking into be caoable of withstanding the actu~| imposed dead load without account the gross weight (including all contents), total length of the manufactured home, the necessary coupling hitch weight, span exceedin~ the maximum allowable stresses for desigl~ axle life as distance, and turning radius. The coupling weight shall not be recommended bv the axle manufacturer, or the maximum tire less than 12 percent nor more than 25 percent of the gross weight. load ratine of Section 10-4.2.8. If a manufacturer has submitted 10-4.2.5 Spring Assemblies. Spring assemblies (springs, hangers, documented evidence of transportation experience to meet the bushings, and mounting bolts) shall be capable of ;~thsm=qding requirements of Section 10-3.3(b). the minimum number of axles

397 NFPA 501 -- MAY 2000 ROP reuuired bv the exnerience record shall be nermitted to not be manufacturer's instructions unless actual braking tests determirxe reduced bv use of the above tables. (The number of axles must be that the stooping reouirements can be met with a lower voltage. consistent with and no less than the number and rating of the axles Aluminum 7w]re.-when used. shall be nrovided with suitable indicated in the exnerience record. termination which are orotected against corrosion.

104.2.6.2 Recycled Axles. Before reuse, all axles, including all 10-4.2.10 Lights and ,i.ssociated rC~lring, +u:~ "~ ...... 1 .... c..... 1 ...... i .... :~.1 component parts, shall be reconditioned as reouired nursuant to a ..... ; ..... +. .... A ~--.-¢ ...... Th^ program accented by a nationally recognized te-sting agency or a :-- ~ C I^..+: .... DAP1A. The recycling nrogram shall be anoroved by a DAPIA or manufact'~'rer =ha!! ha:'e =he ep+den of mee+3-'.g "~:.= requ!reme~= b 7 •...... +lll.l~ ~ " tCl';A.~C.r-m--/..~..wl.'--k+ I.,--'.I~-- ...... ~ k...... t" ...... '.-I_A ~), +I~^ the a~les shall be labe]e-d bv a nationally recomaized testing agency...... r ...... A h ...... : ..... -'-- Federal Motor Vehicle ]~ecycled axles and their comnonents shall utilize only comnatible Safety. Standard (FMV~;~ No. 108 shall be used to identify location comnonents and be 9f the same size and rafin~. Axles shall- not be and oerformance of highway safety electrical lights and associated lentrthened or shortened, excent when nronerlv designed and wiring. The manufacturer Ishall have the notion of meeting these approved by a DAPIA or labeled by a nationally recognized testin~ reouirements bv utilizin~ a temnorarv light/wirin~ harness-which agency. has comnonents that meet the F'MVSS I~o. 108. The temoorarv -]0-412.7 Hubs and Bearings. Hubs and bearings shall meet the harness shall be nermitted to be nrovided by the manufactured requirements of 10 ~.'2_.~ 10-4.2.4.1 and good engineering practice. home transnortation carrier. Both of these components shall be accessible for inspection, routine maintenance and replacement of parts. SUBSTANTIATION: This recommended change was originally submitted to HUD by the MHCSS Consensus Committee on 12-26- 10-4.2.8 Tires, Wheels and Rims. T:...... , ...... t.^~,..~.~ ~ .+..:_o ...... on^, mcct *~c requircmcn'~ ~f I0 A..2.~. T[rcz zk"2! 5c zc!cc=c~ for 90, but no action has been taken. This section has been revised to arxic:.Fate~ uz=gc. Tires. wheels and rime shall be selected such eliminate unnecessary and vague requirements concerning the substructure of the home and to clarify several of the design ~ha.t the manufaeturgr's load rating is not exceeded bv the static requirements. A portion of Interpretative Bulletin J-1-76 is dead load suooorted by the running gear. incorporated into this section pertaining to axles and tires. A recycled axle program is proposed. Regarding brake assemblies, a [Editorial Note: Sections 104.9.8.1 and 104.2.8.2 were excerpted new requirement clarifies that each home transportable section in part from Section D. of Interpretative Bulletin J-1-76, which shall have at least one braking axle, as a separate requirement from HOD revised on February 18, 1998, effective November 16, 1998. the current performance road test requirement at 10-4.2.9.2. A The new Section D. is attached (63 FR 8339).] reference standard is added for highway lights and associated wiring. All these new proposals were debated by the MHCSS 10-4.2.8.1 Tires, Tires shall be inflated to nressure necessarv to Consensus Committee over a two-year period, including two cycles develon the tire canadtv. The allowable tire caoacitv shall be of public review. Clearly, a consensus has been established to permitted to be determined by utilizing a service load factor of 1.50 make these revisions. lnultiplied by the mobile home tire load limit snecified in MH-1. Note: Supporting material is available for review at NFPA Tire and Rim Association. lncorborated. Yearbook - 1989. However. Headquarters. COMMITTEE ACTION: Accept in Principle in Part. the individual nermissible fire loading shall not exceed 5000 lb Revise 10-4.1 as follows: (1361 kg). 10-4 Specific Requirements. Note: For examnle, the maximum tire loading for a 7 x 14.5 10-4.1" System Requirements. The transportation system shall lnanufactured home ~-ply rated tire at 70 nsi cold inflation be designed and constructed as an integrated unit that is safe and pressure would be 2805 Ib (1272 kg). (18')0 lb Mh-I rating x 1.5 suitable for its specific use. In operation, the transportation service load factor = ~805 lb), system shall effectively respond to the control of the towing vehicle The tire load limit specified in MH-1 shall be determined bv the tracking and braking, while traveling at applicable highway speeds tire manufacturer. Used tires which are fitted to new or recycled and in normal highway trattlc conditions. 10-4.2 System Component Requirements. axles shall be individually insnected at the factory, and certiiSed as 10-4.2.1 Drawbar. The drawbar shall be constructed of sufficient conformin~ with the following: strength, rigidity, and durability to safely withstand those dynamic (a) Havin~ a tread deoth of not less than 2/32 in. (1.6 mml a~ forces experienced during highway transportation. It shall he determined by a treadwear indicator, and securely fastened to the manufactured home substructure. (b) Bein~ free of any structural and thermal defects (i.e.. dry 10-4.2.2 Coupling Mechanism. The coupling mechanism, rottinm sidewall snlittin~, etc.). The allowable tire canacitv for usually of the socket type, shall be securely fastened to the drawbar used tires shall be oermitted to be determined by 10-4.2.8.1. in such a manner as to ensure safe and effective transfer of the |0-4.2.8.2 Wheels and Rims. Configuration of-wheels and rims maximum loads, including dynamic loads, between the manufactured home structure mad the hitch-assembly of the towing shall be in accord~llCe with the tire manufacturer's vehicle. The coupling shall be equipped with a manually operated recommendations. Wheel lug bolts shall be tightened to the mechanism so adapted as to prevent disengagement of the unit toroue load recommended bv the orit, inal eouinment while in operation. The coupling shall be designed so that it can manufacturer. be disconnected, regardless of the angle of the manufactured 10-4.2.8.3 Valve stems shall be sized according to the "Tire and home to the towing vehicle. Rim Association. Incornorated Yearbook- 1989." 104.2.3 Chassis. The chassis, in conjunction with the manufactured home structure, shall be designed and constructed [Editorial Note: Section 10-4.2.9 was excerpted in part from to effectively sustain the designed loads consisting of the dead load Interpretative Bulletin J- 1-76.1 plus a minimum of 3 lb/ft (14S Pa) floor load (e.g., flee-standing range, refrigerator, and loose furniture) and the superimposed 10-4.2.9 Brake Assemblies. dynamic load resulting from highway movement, but shall not be 104.2.9.1 ...... mb .... ,v ...... d d,+.~, ...... ung required to exceed twice the dead load az~cmb!ica rcquircd to ~=i:= t.hc =c-;'ing vehic!c inprc,:'~ng 10-4.2.4 Running Gear Assembly. 104.2.4.1 The design load used to size running gear components shallbe the gross shipping weight minus the static ton~ue weight supported by the drawbar. Running gear shall be demgned to Each transportable section of a manufactured home shall accept shock and vibration from the highway and the towing vehicle mad to effectively dampen these forces so as to protect the have at least one braking axle. manufactured home structure from damage and fatigue. The 10-4.2.9.2 ErN'c: vz "..he tc;;Sng vck'e!c a.'=~ the m~--='~acmrad component of the running gear assembly shall be designed to he.me The combined braking system shall be capable of ensuring facilitate routine maintenance, inspection, and replacement. that the maximum stopping distance from an initial ve!ccityspee4 104.2.4.2 Location of the running gear assembly shall be of 20 mph (32 km/h) does not exceed 40 ft (1219 cm). (U. e. determined by documented engineering analysis, taking into account the gross weight (including all contents), total length of 1(~,2.9.3 Brake wirin~ sball be installed to provide suR]cient the manufactured home, the necessary coupling hitch weight, span onerating voltage for each brake. The voltage available at the distance, and turning radius. The coupling weight shall not be brakes sl~all not be less than the value snecifled in the brakg less than 12 percent nor more than 35 percent of the gross weight.

398 NFPA 501 -- MAY 2000 ROP

10-4.2.5 Spring Assemblies. Spring assemblies (springs, hangers, definition of the regulatory agency. The provision addressing the bushings, and mounting bolts) shall be capable of supporting the lengthening or shortening of axles was deleted as it is adequately running gear design loads without exceeding maximum allowable addressed by the current recycling programs available. 10-4.2.8.1 stresses for design spring assembly manufacturer. The capacity of through 10-4.2.8.3 were replaced with the current provision the spring system shall ensure that under maximum operating load permitting a maximum of 18 percent overload on tires. This text conditions sufficient clearance shall be maintained between the was generated from the material found in the Federal Register, tire and manufactured home's substructure to permit unimpeded Vol. 63, No. 32 on the Interpretative Bulletin J-I-76. This revision wheel movement and the changing of tires. is to recognize the current provisions beingpermitted. 10-4.2.6 Axles. Axles and their connecting hardware shall be NUMBER OF COMMITrEE MEMBERS ELIGIBLE TO VOTE: 13 capable of supporting the running gear design loads without VOTE ON COMMITTEE ACTION: exceeding the maximum allowable design axle loads as AFFIRMATIVE: 13 recommended by the axle manufacturer. The number and load COMMENT ON AFFIRMATIVE: capacity of axles necessary to provide a safe tow shall not be less JONES: Committee Proposal 501-215 (Log #103) referencing than those required to support the design load. Section 10-4.2.8.1 Tire loading verification should be performed 10-4.2.6.2 Recycled Axles. Before reuse, all axles, including all on tire groups rather than on individual tires. component parts, shall be reconditioned as required pursuant to a program accepted by a recognized agency. The recycling program shall be approved and the axles shall be labeled by a nationally recognized testing agency. Recycled axles and their components (Log #185) shall utilize compatible components and be of the same size and Committee: MAN-STR rating as the original equipment. 501- 216 - (10-4.1, 10-4.2.8 and 10-4.2.9 [3280.904(a), 10-4.2.7 Hubs and Bearings. Hubs and beatings shall meet the 3280.904(b)(8) and 3280.904(b) (9)]): Reject requirements of 10-4.2.4.1 and good engineering practice. Both of SUBMITI'EI~ Robert C. Horton, Idaho Public Utilities these components shall be accessible for inspection, routine Commission maintenance and replacement of parts. RECOMMENDATION: Revise 24 CFR 3280.904(a) [104.1] to 10-4.2.8 Tires, Wheels and Rims. Tires, wheels and rims shall be read: selected such that the manufacturer's load rating is not exceeded "...In operation, the transportation system (supporting the by the static dead load supported by the running gear. manufactured home structure and its contents) shall effectively 10-4.2.8.1 Tires and rims shall be sized and fitted to axles in respond to the control of the bm'.-ng, wh':c accordance with the gross axle weight rating determined by the ...... ':~-b at -t-t-^--':-~"^...... towing vehicles brake treadle valve manufactured home manufacturer. The permissible tire loading application in terms of tracking, ~lowing and stopping at highway shall be permitted to be increased up to a maximum of 18 percent speeds and in normal highway traffic conditions..." over the rated load capacity of the manufactured home tire marked Delete 24 CFR 3280.904(b)(8) [10-4.2.8]. on the sidewall of the tire or increased up to a maximum of 18 Revise 24 CFR 3280.904(b)(9) [10-4.2.9] to read: Phercent over the rated load capacity specified for the tire in any of (8) "Brake assemblies. (1) The number, type, size and design of e publications of any of the organizations listed in Federal Motor brake assemblies required to effectively and efficiently assist the Vehicle Safety Standard (FMVSS) No. 119 [49 CFR 571.119, towing vehicle in providing cffac'dve control and stopping of the $5.1 (b) ]. manufactured home shall be deform'ned and d~c::mcntcd ~)" 104.2.8.2 Used tires shall be permitted to be sized in accordance enginccr'ng :--:a!)=i0. wu .... , .... ,: .... ,:..^a :_ 9oon rmo¢_~ .... with the above criteria whenever the tread depth is at least 2/32 of r...... ~ :- ~t .... c .... u ..... "-:- eaual in number to the an inch as determined by a tread wear indicator. The determination as to whether a particular used tire is acceptable number of wheels reouired to carrv the weight of the shall also include a visual inspection of thermal and structural manufactured home. defects (e.g., dry rotting, excessive tire sidewall splitting, etc.). (ii) Brakes on the t~;;a.ng ;'ch,a!c and ".ha manufactured home Wheels and rims shall be sized in accordance with the tire shall be capable of assuring that their max'mum =t~Fp'ng d'a*~ncc manufacturer's recommendations as suitable for use with the tires from ~n in!*-:! velocity cf 29 re,lee per hour dce: net exceed 40 selected. fact (U.S. r~ ...... c w ...... :^_ D .... '~*:~'~ brakin~ 104.2.8.3 "The load and cold inflation pressure imposed on the force as a nercenta~e of the cross weieht of the manufactured rim or wheel shall not exceed the rim and wheel manufacturer's home shall eoual or exceed 43.5. The tvoe. size and desi~rn of instructions even if the tire has been approved for a higher load or braise assemblies required m~Y be determin¢~ and documgIlted bv inflation. Tire cold inflation pressure limitations and the inflation enmneerine analysis and shall assure that the tires of the pressure measurement correction for heat shall be as specified in 49 CFR 393.75(h). manufactured home shall be canable of remainin~ within a 12 foot 10-4.2.9 Brake Assemblies. wide lane while being brought to a sudden ston from 45 miles nor 104.2.9.1 Each transportable section of a manufactured home llotar on a level SOl-face that is stJbstantially ¢lrY, smooth, anO free of shall have at least one braking axle. loose material. 10-4.2.9.2 The combined braking system shall be capable of (iii) When leavirlg a manufactBred home facility, a manufactured' ensuring that the maximum stopping distance from an initial home shall have its brakes checked with a brake nerformance speed of 20 mph (32 kin/h) does not exceed 40 ft (1219 era). tester, while hooked to the actual towing unit that will tow it on a 104.2.9.3 Brake wiring shall be installed to provide sufficient nublic hi~hwav, in order to assure that its brakes meet the brakine operating voltage for each brake. The voltage available at the brakes shall not be less than the value specified in the brake force standard of subsection (ii). manufacturer's instructions unless actual braking tests determine Note: Brakes adequate to meet the 43.5 percent standard, such that the stopping requirements can be met with a lower voltage. as those on horse trailers, recreational trailers, smaller flatbeds Aluminum wire, when used, shall be provided with suitable and etc., already exist but the number of brakes required, as well termination which are protected against corrosion. as their efficiency, would likely have to be increased in stages to 10-4.2.10 Stop lamps, turn signals lamps and associated wiring allow for a manufacturing lag in making a sufficient number of shall meet the appropriate sections of the Federal Motor Vehicle brakes available, and to manufacture a brake controller for the Safety Standard (FMVSS) No. 108 which specify the performance towing unit that will handle more than 8 brakes. and location of these lamps and their wiring. The manufacturer Revise HUD's Interpretative Bulletin J-1-76, Transportation - shall have the option of meedng these requirements by utilizing a Subpart J of Part 3280 by:. temporary light/wiring harness which has components that meet Deleting Section "D" relating to "Tires, Wheels, and Rims," and the FMVSS No. 108. The temporary harness shall be permitted to Deleting Section "E" relating to "Brake Assemblies." be provided by the manufactured home transportion carrier. SUBSTANTIATION: The standards in the regulations are in COMMITTEE STATEMENT: The committee accepted the drastic need of improvement in order that manufactured homes proposal as submitted and revised as noted below to reflected the will be more safely transported upon our nations highways. current provisions used today and for clarification. The text of the Statistics to reflect the accidents mad incidents that occur due to note to 104.1 is currently die appendix material of A-10-4.1 as defective undercarriage are difficult to uncover because accident found in the 1997 edition of NFPA 501. The provisions of 10- reports are not uniformly designed to separately record them, 4.2.6.1 were deleted as these requirements are currently left to the almost no reporting officer is properly trained to detect the types designers. 10-4.2.6.2 was revised for clarification of the of defective manufactured housi.ng equipment that would appropriate agency involved without having to define what a contribute to such accidents, and most incidents of wheels coming DAPIA is in the document. This is adequately addressed by the off during transit or axles becoming deformed or broken are not

399 NFPA 501 -- MAY 2000 ROP reported. Drivers and hired companies accept transporting with (Log #117) unnecessary risk out of fear of being replaced if they complain. Committee: MAN-STR Nevertheless, if one will take the time to visit with independent 501-217- (10-4.2.2 [5280.904(b)(2)]): Accept in Principle transport company safety officials and drivers he/she will quickly SUBMITTER: Michael L. Zieman, RADCO learn that there is indeed an unnecessary safety risk and room for RECOMMENDATION: Delete the last sentence which reads: dramatic improvement. As an example, I am enclosing copies of two letters from drivers/companies which have been sanitized at ...... " ...... l: ...... -- ...... z their request to protect their identify. I do not have recommendations for axle remanufacturing SUBSTANTIATION: This requirement dates back over 30 years. processing standards other than to recommend that checks based It is outdated and serves no safety related function. Modern on sound engineering practices be developed and a monitoring towing vehicles are equipment with adjustable height hitch balls system other than, or at least on, the present third party DAPIA which make this requirement unnecessary. Further, no system be implemented. manufacturer would produce a hitches/coupler assembly which The recent modification to the tire overloading rule should be could not be connected to the towing vehicle. allowed to expire with no extension permitted for overloading. I COMMITTEE ACTION: Accept in Principle. don't know where HUD and DOT came up with the idea that tires COMMITTEE STATEMENT: See Committee Action on Proposal can be overloaded to 18 percent if speed is reduced to 50 mph. 501-215 (Log #105). The action taken on this proposal should The manufacturers data sheets I have seen permit only 9 percent, fulfill the intent of the submitter. and then only if proper air pressure is maintained, ff these expert NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 rule makers checked the (often low) pressures actually found in VOTE ON COMMITTEE ACTION: the tires on the road against the manufacturers charts, they would AFFIRMATIVE: 13 find that weights in most cases should be drastically reduced. Regardless, as written the rule is 99.9 percent unenforceable on the highway. Those who can determine speed have no scales to determine tire weights. Those with scales have no method to (Log #172) determine speed, and most often have the wrong type of scales to Committee: MAN-STR properly determine axle or tire weights. Trails we have run 501- 218 - (10-4.2.4.2 [3280.904(b) (4) (ii)]): Accept disclose a wast difference in weights at each fire on a manufactured SUBMITTER= Jerry Moriarty, Fleetwood Homes home. There simply will not be an equal weight per tire for one ] RECOMMENDATION: Revise the last sentence as follows: or more of several reasons. Compare one side of a "half' house [ "The coupling weight shall be not less than 12 percent nor more with its wall, and perhaps a dormer, etc., to its other side where it ] than g~35 percent of the gross weight." has only visqueen. The carpet for the floor of both sides will SUBSTANTIATION: Problem 1. The 25 percent current usually be rolled up somewhere in one of the "halves" and it won't maximum coupling weight requirement needlessly (excessively) be centered. There is also a natural variation in any unit's weight restricts the placement of axle centerlines; by allowing said from side to side caused by such things as where the interior walls, maximum he 35 percent in many cases the axle load Is decreased cabinets, sinks, bath tubs, etc. are located. Often 60 percent of the accordingly. weight of any half of a double wide may be on one side with 40 2. Many sections, particularly shorter units transport better with percent on the other. There is also a natural variation from front higher load on hitch. to rear even if axles could be placed equidistant from the ends and COMMITTEE ACTION: Accept. the hitch height was adjusted so that the ends were adjusted to the COMMITTEE STATEMENT: The proposed revision has been same height. Tires may be of different sizes; a new %14.5 fire is incorporated into the revisions shown in the Committee Action on 26.7 in. in diameter and if placed between new 8-14.5 tires, which Proposal 501-215 (Log #103). are 27.9 in. in diameter, it will not be found to be carrying as NUMBER OF COMMI'Iq'EE MEMBERS ELIGIBLE TO VOTE: 13 much weight, assuming proper inflation and the proper VOTE ON COMMITTEE ACTION: suspension because of the 6/10 in. difference in radius. There AFFIRMATIVE: 13 may be variations in tread depth due to wear on used tires or inflation differences. There may be differences in spring tensions, problems with equalizer function, or suspension misaiignments. All these will contribute to unequal weights at each wheel. To (Log #104) ensure tires are not overloaded I recommend that HUD require Committee: MAN-STR that they be individually weighted by the manufacturer at shipment 501- 219 - (10-4.2.10 [3280.904(b) (10) ] ): Accept after attachment to the transporter. SUBMITTER: Frank Waiter, Manufactured Housing Inst. (MHI) I do not have documentation "that axles for manufactured homes RECOMMENDATION: Revise Section 10-4.2.10 to read as are designed for only a single trip and with brakes to meet a follows: braking force of merely 16 when expressed as a percentage of gross 10-4.2.10 ~ :~'- .... .4 A.... :^~^.~ ~An_:~_ ~:-k ...... c ..... ,^~..~., axle weight. I have only the axle manufacturers statement which certainly seems very generous when their structure is viewed. requircmcn:~ i~ tc:~..: cf !c:~.'d~n and pc~..'~..a~qce. Stop lamps. Note: Supporting material is available for review at NFPA turn signals lamns and associated wirin~ shall meet the Headquarters. aporonriate sections of the Federal Motor Vehicle Safety Standard COMMITTEE ACTION: Reject. COMMITTEE STATEMENT: The committee recognizes that this (FMVSS) No. 108 which snecifv the nerformance and location of issue is of concern to many in the industry and the enforcement these lamns and their wiring. The manufacturer shall have the community but at this time rejected thisproposal based on many option of meeting this-thee requirement~ by utilizing a temporary concerns that the proposed text raised. The inttoduction of the light/wiring harness which has comnonents that meet the FMVSS braking force requirement of 8 (ii) is not a common term that is No. 108. The temoorarv harness shall be nermitted to be provided used in the industry. There was not sufficient substantiation by the manufactured home transportation carrier. provided to justify and support the recommendation of a SUBSTANTIATION: This recommended change was originally particular braking force of 43.5 which is a percentage of the weight submitted to HUD by the MHCSS Consensus Committee on 1-10- of the home. There are concerns on the availability of the 92, but no action has been taken. This proposed revision limits methods of testing and measurements for the brakes to be the applicability of FMVSS no. 108 to stop lamps and turn signal determined to be in compliance. There were concerns on who lamps only. This has always been the intent of 10-4.2.10. This should be responsible for the implementation and enforcement of proposal eliminates the need to request a revision to FMVSS No. this requirement. The committee at this time did not have the 108. ability to review the current U. S. Department of Transportation COMMITTEE ACTION: Accept. regulations governing vehicle transportation and the application of COMMITTEE STATEMENT: This proposal has been the 45 mph limitation. These requirements should reflect and be incorporated into the Committee Action on Proposal 501-215 (Log consistent with the current provisions of the DOT regulations if #103). nuMBPlicable" NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 15 ER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 13 VOTE ON COMMITTEE ACTION: VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 13 AFFIRMATIVE: 13

400 NFPA 501 -- MAY 2000 ROP

(Log #134) This proposal seeks to reduce these ambiguities and improve the Committee: MAN-MEC energy efficiency, comfort, and health and safety of the occupants. 501- 220 - (11-1.1 [3280.703] ): Accept Recommended fan tests will cost the manufacturer less than $500 SUBMITTER: James A. Ranfone, American Gas Assn. per year. RECOMMENDATION: Revise text as follows: COMMITTEE ACTION: Accept. 11-1.1 NFPA Publications. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 "NFPA 54, National Fuel Gas Code, ANSI Z223.1/NFPA 54. 1996 VOTE ON COMMITTEE ACTION: edition..." AFFIRMATIVE: 10 SUBSTANTIATION: Add ANSI standard reference to the NEGATIVE: 2 National Fuel Gas Code citation. EXPLANATION OF NEGATIVE: COMMITTEE ACTION: Accept. MIKEL: The reason for the negative vote is that I believe the NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 recommended annual tests would not provide significant long- VOTE ON COMMITTEE ACTION: term benefits for the anticipated costs. There are many reasons for AFFIRMATIVE: 12 cold drafty homes and moistureproblems in building cavities. Many of which are caused by or during setup of the home. These (Log #135) would not be demonstrated by the factory setting up, Committee: MAN-MEC depressurization testing and tear down of a double-wide or triple- 501- 221 - (11-1.2.7 [3280.703]): Accept wide home. (The cost of this procedure would be greatly in SUBMITTER: James A. Ranfone, American Gas Assn. excess of the stated $500.) I believe that the proper RECOMMENDATION: Revise text as follows: implementation of a manufacturer's quality assurance plan can 11-1.2.7 ANSI Publications, American National Standards provide adequate and more statistically significant results than the Institute, 11 West Street, New York, NY 10036. proposed test. ANSI Z 21.1, Household Cooking Gas Appliances, 1996. WALTER: I agree with the Explanation of the Negative presented ANSI Z 21.5.1, Gas Clothes Dryers Volume I Type 1 Clothes by John Mikel. The recommended annual test would not provide Dryers, 1995. significant long-term benefits to offset the anticipated costs. A ANSI Z 21.10.1, Gas Water Heaters, Volume I, Storage Water properly implemented manufacturer's quality insurance plan is Heaters with Input/Ratings of 75,000 Btu per Hour or Less, ILY23 more than adequate. 1998. ANSI Z 21.15, Manually Operated Gas Valves for Appliances, (Log #CP418) Appliance Connector Valves and Hose End Valves .....1 ¢M30 1997. Committee: MAN-MEC ANSI Z 21.19, Refrigerators Using Gas Fuel, 1990. 501- 223 - (A-6-5.1.1 (New)): Accept ANSI Z 21.20, Automatic Gas Ignition Systems and Components, SUBMITTER: Technical Committee on Mechanical for I.... fl139 1997. Manufactured Housing RECOMMENDATION: Add a new appendix note A-6-5.1.1: ANSI Z 21.21, Automatic Valves for Gas Appliances, !993 1995. A-6-5.1.1 The home manufacturer should address ¢~¢b of the ANSI Z 21.22, Relief Valves and Automatic Gas Shutoff Devices following considerations for each type of nenetration encountered for Hot Water Supply Systems, 1986. ANSI Z 21.23, Gas Appliance Thermostats, 1993. in the home design and construction: ANSI Z 21.24, Metal Connectors for Gas Appliances, 19~3 1997. (a) Location(s)-in envelooe and the exnected size of the ANSI Z 21.40, Gas-Fired Absorption Summer Air Conditioning oenetration to be sealed Appliances, ]9S! 1996. (b) True of material to seal the oentration ANSI Z 21.47, Gas-Fired Central Furnaces tv ...... r~: .... w^-. (cl Material annlication technioue and stens reuuired to ensure t~..... ~ ~ ...... ~ !99~ 1995. the seal is not damaged (d) Whether the material will be anDlied durin~ construction or ANSI Z 233.1/NFPA 54. National Fuel Gas Code. 1996. set-uD ANSI LC 1, Gas Piping Systems Using Corrugated $tainless S[f¢] (el Oualitv control insoections to ensure oroner workmanshio. Tubing. 1997, SUBSTANTIATION: The proposed explanatory language helps SUBSJ'ANTIATION: Update ANSI standards references, add ensure penetrations are properly addressed to improve energy ANSI publication of the National Fuel Gas Code, which is efficiency. published independently as well as by NFPA, and add the ANSI COMMITTEE ACTION: Accept. standard for corrugated stainless steel tubing. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 COMMITTEE ACTION: Accept. VOTE ON COMMITTEE ACTION: NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 AFFIRMATIVE: 12 VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 12 (Log #CP421) Committee: MAN-MEC 501- 224 - (A-6-8.5 (New)): Accept (Log #CP417) SUBMITTER: Technical Committee on Mechanical for Committee: MAN-MEC Manufactured Housing 501- 222 - (A-6-5.1 (New)): Accept RECOMMENDATION: Add a new appendix note A-6-8.3: TCC NOTE: The Technical Correlating Committee on A-6-8.3 All areas where insulation corrlpression exist~ should I)¢ Manufactured Housing (MAN-AAC) directs that a public addressed by olant oualitv control orocesses. This includes comment be submitted in the Correlating Committee's name coronression as a result of electrical wiring and receptacles. requesting that the Technical Committee on Mechanical for nlumbing, medicine cabinets and utility ~nels. and metal frames. Manufactured Housing (MAN-MEC) give consideration to Mr. To address this. batt-tvoe wall insulation should be cut around Mikel's and Mr. Waiter's explanation of their negative ballots. SUBMITTER: Technical Committee on Mechanical for electrical and plumbing fixtures and electrical wire anal plumbing Manufactured Housing runs. Batt-tvoe or blanket-tvoe insulation should be cut to fit to RECOMMENDATION: Add a new appendix note A-6-5.1: limit comnression and comnlv with the insulation manufacturer A-6-5.1 To ensure envelope infiltration control is effective, arid to stated R-value. Excentions should be limited to "thermal shorts" nrovide oositive feedback to plant personnel to imnrove the air associated with penetrations from plumbing and ducts, leakage oualitv control Drocess. annual fan deoressurization tests SUBSTANTIATION: Many insulation compression prone areas should be conducted in" accordance with ASHRAE/p.NSI 119-1988 can be effectively insulated by simple in-plant quality control and ASTM E779. These tests should be conducted and procedures, and/or by locating fixtures in non-envelope areas. No documented at least annually in each nlant on random units by the additional insulation and associated material costs may be required. manufacturer and/or a~eot. COMMITTEE ACTION: Accept. SUBSTANTIATION: A_ large percentage of consumer complaints NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 12 in the Pacific Northwest region are related to cold, drafty homes; VOTE ON COMMITTEE ACTION: moisture problems in building cavities; and high bill complaints; AFFIRMATIVE: 12 and are often the result of oversights related to ambiguities in the design, installation, and quality control phases of construction.

401 NFPA 501A- MAY 2000 ROP

NFPA 501A only be referenced as non-mandatory standards and shall only be included as advisory material in NFPA Codes or Standards. NFPA (Log #1) 80A is a recommended practice and cannot be referenced directly Committee: MAN-FIR within the document. NFPA 80A addresses many different types of 501A- 1 - (4-2.1.1): Reject facilities by the use of tables depending on the percentage of SUBMITTER: Raymond Forestal, Falls Twsp, PA Fire Marshal's openings, and height and width of a building. It does not Office specifically address or note the application to a manufactured RECOMMENDATION: 1. NFPASOA. home, but it is part of a general application for facilities of any 2. Wording to be deleted: type. There was no additional documentation which would "Any portion of a manufactured home, excluding the tongue, support the increase in distance separation required if using NFPA shall not be located closer than 10 ft (3 m) side to side, 8 ft (2.4 80A as it may relate specifically to a manufactured home. The m) end to side, or 6 ft (1.8 m) end to end horizontally from any distance criteria established in NFPA 501A was specifically other manufactured home or community building." established for manufactured homes many years ago. It is possible Remaining wording to stay the same. that this distance is not adequately addressing this issue, but it has SUBSTANTIATION: Conflicting practices or standards. not been demonstrated by documentation that there is a significant Writers experience in fire service, 40 years, in a urban/suburban problem. It is also recognized that a problem may exist in community including a 2,000 unit mobile~manufactured home enforcement of the minimum distance that is currently found in community. NFPA 501A. Homes generally have non-rated walls vinyl or aluminum sided NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 14 with severe exposure problems. VOTE ON COMMITTEE ACTION: COMMITTEE ACTION: Reject. AFFIRMATIVE: 11 COMMITTEE STATEMENT: The NFPA Regulations Governing NEGATIVE: 1 Committee Projects address the referencing of standards in Section NOT RETURNED: 2 Endthoff, Lee 3-3.7. 3-3.7.2 notes that non-mandatory reference standards shall EXPLANATION OF NEGATIVE: only be referenced as non-mandatory standards and shall only be RYAN: The COMMITTEE STATEMENT says: "The NFPA included as advisory material in NFPA Codes or Standards. NFPA Regulations Governing Committee Projects addresses the 80A is a recommended practice and cannot be referenced directly referencing of standards in Section 3-3.7. 3-3.7.2 notes that non- within the document. NFPA 80A addresses many different types of mandatory reference standards shall only be referenced as non- facilities by the use of tables depending on the percentage of mandatory standards and shall only be included as advisory openings, and height and width of a building. It does not material in NFPA Codes and Standards. NFPA 80A is a specifically address or note the application to a manufactured recommended practice and cannot be referenced directly within home, but it is part of a general application for facilities of any the document." The submitter's RECOMMENDATION does not type. There was no additional documentation which would oronose referencing NFPA 80A direcdv within the document. support the increase in distance separation required if using NFPA Therefore. that hart of the Committee Statement is neither germane 80A as it may relate spe+cifically to a manufactured home. The nor valid. distance criteria established in NFPA 501A was specifically THE COMMITTEE STATEMENT further states: "NFPA 80A established for manufactured homes many years ago. It is possible addresses many different types of facilities by the use of tables that this distance is not adequately addressing this issue, but it has depending on the percentage of openings, and height and width of not been demonstrated by documentation that there is a significant a building. It does not specifically address or note the application problem. It is also recognized that a problem may exist in to a manufactured home." Neither does it snecificallv nreclude enforcement of the minimum distance that is currend~ found in annlication to a manufactured home. Therefore. that Dart of the NFPA 501A. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 14 C.omroittee Statement is not a valid argument a~inst the VOTE ON COMMITTEE ACTION: RECOMMENDATION. AFFIRMATWE: 12 The COMMITTEE STATEMENT further states: "There was no NOT RETURNED: 2 Endthoff, Lee additional documentation which would support the increase in distance separation required if using NFPA 80A as it may relate specifically to a manufactured home." The development and approval of NFPA 80A, Recommended Practice for Protecting (Log #2) Buildings from Exterior Exposure Fires, was based on substantial Committee: MAN-FIR and convincing documentation. The statement by the submitter in 501A- 2- (4-2.1.1): Reject his SUBSTANTIATION that he utilized this NFPA Recommended SUBMITTER: James M. Kettler, Plumstead Twp Fire Marshal's ~ractice for the very purpose enunciated in its title implicitly Office applies the documentation on which it was approved. That part of RECOMMENDATION: Revise text as follows: the Committee Statement amounts to an unsubstantiated and 4-2.1 Fire Safety Separation Requirements. undocumented challenge to the validity of the NFPA 4-2.1.1 Separation distances between manufactured homes, v _R,ecommended Practice. and thereby, to the validity of NFPA excluding the tongue, shall be established by the fire department and the authority having jurisdiction; but at no point shall be nrocedures. By itself, it cannot be a valid obiection to the located closer than 20 ft between any other manufactured home or Recommendation. community building. The COMMITTEE STATEMENT further states: "The distance SUBSTANTIATION: Fire Separation distances listed in the criteria established in NFPA 501A was specifically established for current edition of NFPA 501A conflict with both my fire experience manufactured homes many years ago. It is possible that this and with NFPA 80A, Recommended Practice for Protecting distance is not adequately addressing this issue, but it has not been Buildings from Exterior Exposure Fires. demonstrated by documentation that there is a significant problem. From 15 years of personal experience, both in rural and suburban It is also recognized that a problem may exist in enforcement of the settings, fire in manufactured homes frequently result in damage to minimum distance that is currently found in NFPA 501A." This exposure buildings. The amount of exposure damage was not as amounts to an admission that something may need to be done. dependent on water supply and response time as it was on the hence is more sunnortive of the SUBMITTER'S distance between the exposure structure and the involved structure. RECOMMENDATION than of the COMMITTEE ACTION for By application of NFPA 80A, I have found the recommended relection. The SUBMITTER, based on his 15 years experience, separation distances for a typical manufactured home range from 20 ft to as much as 38 ft side to side. states in his SUBSTANTIATION, "The amount of exposure damage was not as dependent on water supply and response time Given the unique nature of each community, the fire department and the authority having jurisdiction must be allowed to determine as it was on the distance between the exposure structure and the involved structure." He then developed a specific the separation distances necessary to protect manufactured homes. RECOMMENDATION, using the applicable NFPA Recommended A minimum distance is also established for those areas lacking such a requirement. Practice. COMMITTEE ACTION: Reject. In summary, the COMMITTEE STATEMENT (1) invokes NFPA COMMITTEE STATEMENT: The NFPA Regulations Governing Regulations Governing Committee Projects which prohibit Committee Projects address the referencing of standards in Section something the Submitter did not recommend, (2) ignores the substantial documentation behind the applicable NFPA 80A, 3-3.7. 3-3.7.2 notes that non-mandatory reference standards shall Recommended Practice for Protecting Buildings from Exterior

402 NFPA 501A- MAY 2000 ROP

Exposure Fires, upon which the Submitter calculated his specific (Log #CP1) numerical recommended spacing, and (3) admits that there may Committee: MAN-FIR be a problem with the "manyyears" old existing spacings, 501A- 4 - (4-3.5.1, 4-$.5.2, Chapter 11): Accept particularly in enforcement. This leaves me no choice but to vote SUBMITTER: Technical Committee on Fire Safety NEGATIVE on the COMMITTEE ACTION: Reject with regard to RECOMMENDATION: Revise 4-3.5.1 and 4-3.5.2 to read as this ballot item. follows: 4-3.5.1 Water supplies for fire department operations without municipal water supply shall be in accordance with NFPA 1231, Water Supplies for Suburban and Rural Fire Fighting. 4-3.5.2 Where provided, hydrants shall be located along (Log #3) community streets or public ways within 500 ft (152.4 m) of all Committee: MAN-FIR homes and buildings and installed in accordance with NFPA 24, 501A- 3 - (4-2.1.1): Reject Private Fire Service Mains. The Insurance Service Organization SUBMITrER: GregoryJakubowski, Huntingdon Valley, PA Fire Suppression Rating Schedule, Table 340, Calculation of RECOMMENDATION: Replace entire 4-2.1.1 with the following: Needed Fire Flow, water flow rate table shall be used to determine "Any portion of a manufactured home excluding the tongue, shall the minimum water flow required. not be located closer than the separation distance calculated by Add the following to Chapter 11, Reference Standards, and NFPA 80A, Recommended Practice for Protection of Buildings renumber existing: from Exterior Fire Exposures. 11-1.2.22 ISO Publication. Exception No. 1: If the exposed composite walls and roof of Fire Suppression Rating Schedule, Table 340, Calculation of either structure are without openings and constructed of materials Needed Fire Flow, 6th Edition, 1988. that will provide a 1-hr fire rating or the structures are separated by SUBSTANTIATION: The revision to 4-3.5.1 is to provide a a 1-hr fire-rated barrier. reference to a nationally recognized standard that addresses this Exception No. 2: If each structure is provided with a sprinkler issue, NFPA 1231. The revision to 4-3.5.2 is to provide a reference system in accordance with NFPA 13D, Standard for the Installation to a standard that addresses hydrants and all of the associated of Sprinkler Systems in One- and Two-Family Dwellings and items. A reference is provided to the ISO tables for water flow rate Manufactured Homes." to provide a means to establish the minimum criteria for water SUBSTANTIATION: It is unclear from an engineering standpoint supply. where two existing space separations for manufactured homes COMMITTEE ACTION: Accept. originates. Calculations performed using NFPA 80A Clearly show NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 14 spacing of 20-30 ft between typical manufactured homes is required VOTE ON COMMITTEE ACTION: to prevent pilot ignition of exposed units. Numerous and AFFIRMATIVE: 12 anecdotal situations/fire incidents confirm this need for the NOT RETURNED: 2 Endthoff, Lee increased spacing. Fire-rated barriers or sprinklers provide performance-based alternatives to achieve the fire safety objective of preventing fire spread from manufactured home to manufactured home. Note: Supporting material is available for review at NFPA Headquarters. COMMITTEE ACTION: Reject. COMMITTEE STATEMENT: The NFPA Regulations Governin~g Committee Projects address the referencing of standards in Secuon 3-3.7. 3-3.7.2 notes that non-mandatory reference standards shall only he referenced as non-mandatory standards and shall only be included as advisory material in NFPA Codes or Standards. NFPA 80A is a recommended practice and cannot be referenced direcdy within the document. NFPA 80A addresses many different types of facilities by the use of tables depending on the percentage of openings, and height and width of a building. It does not specifically address or note the application to a manufactured home, but it is part of a general application for facilities of any type. There was no additional documentation which would support the increase in distance separation required if using NFPA 80A as it may relate specifically to a manufactured home. The distance criteria established in NFPA 501A was specifically established for manufactured homes many years ago. It is possible that this distance is not adequately addressing this issue, but it has not been demonstrated by documentation that there is a significant problem. It is also recognized that a problem may exist in enforcement of the minimum distance that is currendy found in NFPA 501A. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 14 VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 12 NOT RETURNED: 2 Endthoff, Lee

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