National Standard Plumbing Code

2006 NATIONAL STANDARD PLUMBING CODE Published By PLUMBING-HEATING-COOLING CONTRACTORS— NATIONAL ASSOCIATION All inquiries or questions relating to interpretation should be forwarded to Code Secretary 180 S. Washington St., P.O. Box 6808 Falls Church, VA 22046-1148 1-800-813-7061 © 2006 Plumbing-Heating-Cooling Contractors–National Association To order additional books call 1-800-533-7694 (if calling from New Jersey call 1-800-652-7422) Second Printing – July 2006 FOREWORD Since its founding as the National Association of Master Plumbers in 1883, the National Association of Plumbing-Heating-Cooling Contractors has maintained a serious interest in plumbing standards, codes and good plumbing design practices. The Association published the NAMP “Standard Plumbing Code” in 1933 and furnished revised editions until 1942. NAPHCC participated in the development of special standards for war-time plumbing and later was represented on the National Plumbing Code Coordinating Committee, whose work ultimately resulted in the adoption of A40.8 as a standard or model plumbing code in 1955. NAPHCC served as a sponsor in the early 1960’s of the project which attempted to update the 1955 document. This project was operated through the procedures of the American National Standards Institute. However, the A40.8 revision project was not completed because consensus could not be achieved. In order to provide local and state governments, code administrative bodies and industry with a modern, updated code, NAPHCC published the “National Standard Plumbing Code,” in 1971, following the format and sequence of the A40.8 to provide for maximum convenience of users. With the June 1973 revision, the American Society of Plumbing Engineers joined this effort by co-sponsoring the National Standard Plumbing Code. ASPE maintained its co-sponsorship status until September, 1980. Upon ASPE’s withdrawal of co-sponsorship, the Code Committee composition was changed to include not only members of the contracting and engineering communities but also members of the inspection community. Contractors, engineers and inspectors now comprise the National Standard Plumbing Code Committee. i ii NATIONAL STANDARD PLUMBING CODE Title: National Standard Plumbing Code Scope: The development of a recommended code of plumbing practice, design, and installation, including the establishment of performance criteria predicated on the need for protection of health and safety through proper design, installation, and maintenance of plumbing systems. This scope excludes the development of specific standards related to the composition, dimensions, and/or mechanical and physical properties of materials, fixtures, devices, and equipment used or installed in plumbing systems. Purpose: To provide practices and performance criteria for the protection of health and safety through proper design of plumbing systems. Exceptions: In case of practical difficulty, unnecessary hardship or new developments, exceptions to the literal requirements may be granted by the authority having jurisdiction to permit the use of other devices or methods, but only when it is clearly evident that equivalent protection is thereby secured. iii iv INTRODUCTORY NOTE The material presented in this Code does not have legal standing unless it is adopted by reference, or by inclusion, in an act of state, county, or municipal government. Therefore, administration of the provisions of this Code must be preceded by suitable legislation at the level of government where it is desired to use this Code. In some places in this Code, reference is made to “Authority Having Jurisdiction.” The identity of an Authority Having Jurisdiction will be established by the act which gives legal standing to the Code provisions. Meetings for purposes of review and revision are scheduled each year with proper public notices. Suggestions and requests for revisions can be made by any interested party and should be submitted on the special forms provided by the Committee. Personal appearance before the Committee for a hearing on any Code matter can be had by interested parties after a request in writing. In the course of revision, certain outdated sections have been deleted. In order to maintain consistency and perpetuity of the numbering system, those deleted sections and numbers have been removed from this printed text, or placed in reserve. All changes from the previous edition of this Code are marked by a vertical line in the margin. v 2006 National Standard Plumbing Code Committee J. Richard Wagner, PE, Chairman Luis A. Rodriguez, C.P.D. Julie A. Turner The Poole & Kent Corporation KSI Professional Engineers Staff Liaison 4530 Hollins Ferry Rd P.O. Box 628 Plumbing-Heating-Cooling Contrac- Baltimore, MD 212-27-4670 Farmingdale, NJ 07727 tors–National Association Phone: (410) 247-2200 Phone: (732) 938.2666 180 S. Washington St., Fax: (410) 247-2331 Fax: (732) 938.2661 Falls Church, VA 22046 [email protected] E-mail: [email protected] (703) 237-8100 or (800) 533-7694 Fax: (703) 237-7442 Charlie Chalk Ronald W. Stiegler e-mail: [email protected] E-B-L Engineers, LLC Phoenix Plumbers, Inc. URL: http://www.phccweb.org 8005 Harford Rd 5320-J Enterprise St. Baltimore, MD 21234-5701 Eldersburg, MD 21784-9313 Phone: (410) 668-8000 Phone: (410) 781-3000 Fax: (410) 668-8001 Fax: (410) 781-6826 [email protected] [email protected] William Chamberlin Alex Tucciarone Chamberlin Plbg. & Htg Company Old Bridge Plumbing Inspector P.O. Box 390 58 Lear Ct 1274 Route 130 South East Brunswick, NJ 08816-1853 Windsor, NJ 08561 Phone: (732) 721-5600 2420 Phone: (609) 448-1848 Fax: (732) 607-7912 Fax: (609) 448-8683 [email protected] Michael J. Kastner Jerry Van Pelt, CIPE Kastner Plumbing & Heating Clive Samuels & Associates, Inc. 12630 Friendship Road 4000 Route 66 West Friendship, MD 21794 Tinton Falls, NJ 07753 Phone: (301) 725-5000 Phone: (732) 643-9666 Fax: (410) 442-7626 Fax: (732) 643-9667 [email protected] [email protected] Leon LaFreniere Dave Viola City of Manchester, Dept. of Buildings Plumbing Manufacturers Institute One City Plaza 1340 Remington Rd., Suite A Manchester, NH 03101 Schaumburg, IL 60173 Phone: (603) 624-6475 Phone: (847) 884-9764 Fax: (603) 624-6324 Fax: (847) 884-9775 [email protected] [email protected] Frank R. Maddalon Robert Kordulak F. R. Maddalon Plumbing & Heating NSPC Secretariat 1550 Sylvan Ave The Arkord Company Hamilton, NJ 08610-4461 206 1st Ave., # 603 Phone: (609) 587-8317 Belmar, NJ 07719-2006 Fax: (609) 587-9848 Phone: (732) 681-5400 [email protected] Fax: (732) 681-5047 [email protected] Thomas C. Pitcherello NJ Department of Community Affairs Frank R. Maddalon Codes Assistance Unit Executive Committee Liaison 101 S. Broad Street, PO Box 802 F. R. Maddalon Plumbing & Heating Trenton, NJ 08625-0802 1550 Sylvan Ave Phone: (609) 984-7609 Hamilton, NJ 08610-4461 Fax: (609) 984-7717 Phone: (609) 587-8317 [email protected] Fax: (609) 587-9848 [email protected] vi Contents FOREWORD ............................................................................................................................................ i INTRODUCTORY NOTE ...................................................................................................................... v ADMINISTRATION ................................................................................................................................ 1 BASIC PRINCIPLES .............................................................................................................................. 9 CHAPTER 1 —Definitions ........................................................................................................ 13 CHAPTER 2 —General Regulations .......................................................................................... 31 CHAPTER 3 —Materials .......................................................................................................... 39 CHAPTER 4 —Joints and Connections ..................................................................................... 65 CHAPTER 5 —Traps, Cleanouts and Backwater Valves ........................................................... 73 CHAPTER 6 —Interceptors ...................................................................................................... 79 CHAPTER 7 —Plumbing Fixtures, Fixture Fittings and Plumbing Appliances .............................. 85 CHAPTER 8 —Hangers and Supports ................................................................................... 105 CHAPTER 9 —Indirect Waste Piping and Special Wastes ...................................................... 107 CHAPTER 10 —Water Supply and Distribution ....................................................................... 113 CHAPTER 11 —Sanitary Drainage Systems ............................................................................. 137 CHAPTER 12 —Vents and Venting ......................................................................................... 147 CHAPTER 13 —Storm Water Drainage ................................................................................... 161 CHAPTER 14 —Special Requirements for Health Care Facilities .............................................. 171 CHAPTER 15 —Tests and Maintenance .................................................................................. 177 CHAPTER 16 —Regulations Governing Individual Sewage Disposal Systems for Homes and Other Establishments Where Public Sewage Systems Are Not Available ..................................................

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