SECTION 05500

MISCELLANEOUS METALS

1.00 GENERAL

1.01 WORK INCLUDED Furnish labor, materials, equipment and incidentals necessary to fabricate and install miscellaneous metals and other ornamental or specialty work. Furnish hangers, support, and brackets necessary to fasten other work.

1.02 QUALITY ASSURANCE Field welding shall be performed by experienced operators, qualified in conformance with "Standard Qualifications Procedure" of the AWS "Structural Welding Code".

1.03 SUBMITTALS Submittals shall be in accordance with Section 01300, SUBMITTALS and shall include: A. Shop drawings showing fabricated items

B. Product data sheets for manufactured components

C. List as necessary

1.04 REFERENCES AND STANDARDS

A. The applicable provisions of the following standards shall apply as if written here in their entirety:

B. Federal Specifications (Fed Spec): FF-B-561D Bolt, (Screw) Lag FF-P-575C Bolt, Hexagon and Square FF-B-588C Bolt, Toggle, and Expansion Sleeve, Screw FF-S-85 Screws, Cap, Slotted and Hexagon-Head FF-S-92 Screws, Machine: Slotted, Cross-Recessed or Hexagon Head FF-N-105B Nails, Brads, Staples and Spikes, Wire, cut and Wrought FF-N-836D Nuts, Square, Hexagon, Cap, Slotted, Castle Knurled, Welding and Single Ball Seat FF-P-395 Power Actuated Drive Pins FF-S-111 Screw, Wood FF-S-325 Shield, Expansion: Nail, Expansion; and Nail, Drive Screw (Devices, Anchoring, Masonry) FF-W-84 Washers, Lock (Spring) RR-G-661 Gratings, Metal TT-P-645 Primer, Paint, Zinc Chromate, Alkyd Type TT-V-51 Varnish; Asphalt C. The Aluminum Association (AA) publications:

20 December 2007 05500-1 REY KEO 07001 SAA-46 Standards for Architectural Aluminum DAF-45 Designation System for Aluminum Finishes ABH-21 Aluminum Brazing Handbook ADS-1 Aluminum Standards and Data

D. American Society for Testing and Materials (ASTM) publications: ASTM A6 Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling ASTM A27 Specification for Steel Castings, Carbon, for General Application ASTM A36 Specification for Carbon Structural Steel ASTM A48 Specification for Gray Iron Castings ASTM A53 Specification for Pipe, Steel, Black and Hot-Dipped, Zinc- Coated, Welded and Seamless Steel Pipe ASTM A123 Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products ASTM A148 Specification for Steel Castings, High Strength, for Structural Purposes ASTM A153 Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware ASTM A325 Specification for Structural Bolts, Steel, Heat Treated, 120/105ksi minimum Tensile Strength ASTM A354 Specification for Quenched and Tempered Alloy Steel Bolts, Studs, and Other Externally Threaded Parts ASTM A490 Specification for Structural Bolts, Alloy Steel, Heat Treated, 150 ksi minimum Tensile Strength ASTM A653 Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc- Iron Alloy-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process ASTM A668 Specification for Steel forgings, Carbon and Alloy, for General Industrial Use ASTM B308 Specification for Aluminum-Alloy 6061-T6 Standard Structural Profiles E. American National Standards Institute (ANSI) publication: ANSI A14.3 Safety Code for Fixed Ladders F. American Welding Society (AWS) standard: AWS D1.1 Structural Welding Code - Steel AWS D1.2 Structural Welding Code - Aluminum AWS D1.3 Structural Welding Code - Sheet Steel G. Steel Structures Painting Council (SSPC) publications: Steel Structures Painting Manual, Volume 2 H. National Association of Architectural Metal Manufacturers Association (NAAMA) publications:

20 December 2007 05500-2 REY KEO 07001 AMP 500 Metal Finishes Manual AMP 504 Finishes for Carbon Steel and Iron "Stair Manual"

1.05 DELIVERY AND STORAGE Ship expansion joints to site in protective coverings. All aluminum which will be exposed to view shall have strippable protective coverings applied at the factory and removed after erection.

1.06 JOB CONDITIONS

A. Contractor shall verify dimensions and take field measurements necessary to establish size and connections prior to fabrication. Provide any anchors, brackets, supports, braces, connections and fasteners necessary to assemble the various components and anchor into position into the structure.

B. Each component shall be of adequate size and strength necessary to fulfill its function. Failure of any part of the assembly is cause to reject the entire component. Component shall be assembled in a neat and substantial manner. Joints exposed to the weather shall be formed in a manner to exclude water.

C. Provide miscellaneous plates, brackets, frames, anchors and other steel fabrications as indicated on the drawings or required to make connections to components furnished under other sections of the specifications. Provide brackets for elevators and rails, precast concrete panels, and frames for mechanical equipment.

2.00 PRODUCTS

2.01 MATERIALS

A. STRUCTURAL STEEL: ASTM A36 having a minimum yield strength of not less than 36,000 psi.

B. MISCELLANEOUS STEEL: Rolled shapes complying with ASTM A36; plates and bars complying with ASTM A6.

C. STRUCTURAL CAST STEEL: Conforming to ASTM A148, Grade 80-50.

D. GENERAL PURPOSE CAST STEEL: Conforming to ASTM A27, Grade 65-35.

E. STEEL FORGING: General purpose, conforming to ASTM A668, Class C or F.

F. CAST IRON: Soft, gray iron, conforming to ASTM A48, Class 30, has 30,000 psi tensile strength.

G. GALVANIZING: Hot dipped, conforming to ASTM A123.

H. WELDING ELECTRODES: Appropriate for the intended usage. Electrodes for arc welding shall be series E70.

20 December 2007 05500-3 REY KEO 07001 I. ALUMINUM: Appropriate for the intended usage. Alloys shall comply with the following: ALLOY USAGE 6061 Extruded or rolled structural shapes 6063 Extrusions, general (Pipe rails) 3003 Sheet, tube or pipe 5005 General purpose sheet 5056 Nails and Rivets 2024 Screws, bolts and nuts J. STAINLESS STEEL: Appropriate for the intended usage, complies with AISI Type 316. Finish shall be No. 2, Dull l.

K. FASTENERS: AISI Type 316 Stainless Steel unless noted otherwise: 1. Structural Bolts – AISI Type 316 Stainless Steel. 2. Nails and Spikes - Fasteners complying with Fed. Spec. IV. FF-P-636. 3. Self-Drilling Fasteners (SDF) - Corrosive resistant, hex-headed drill pointed, size as appropriate. 4. Powder Activated Fasteners (PAF) - Tempered A-151 steel with a minimum tensile strength of 270,000 psi, complying with Fed. Spec. - P3958, Ramset, Hilti, or approved equal. 5. Sleeve Bolts - Molly "Parasleeve" or Ramset "Dynabolt". 6. Concrete Expansion Bolts – Stainless Steel Hilti "KwikBolt II". 7. CMU Fastener - Hilti "KwikTog". 8. Metal Deck Fasteners - Corrosive resistant, hexheaded, drill pointed fasteners, Teks or equal. 9. Self-Drilling Anchors - Zinc-plated, case hardened body with expanding plug, Red Head “Self Drill” or Hilti “Kwik-Pro”. 10. Adhesive Anchor System – Hilti “Hit Hy 150” , HSE 2421, or “HITHY20”. L. STEEL PIPE: Welded or seamless types, standard weight, Schedule 40 steel tubing conforming to ASTM A53. Steel tube shall conform to ASTM A500, Grade B.

M. ANCHORS AND BOLTS: Anchors and bolts shall be AISI Type 316 stainless steel.

N. STUD ANCHORS: Stainless steel, type 18-8 anchors as manufactured by Nelson Stud Anchors, or equal.

O. ALUMINUM SILLS: Extruded of 6063-T52 alloy, J.C. Braum & Company, model AA, complete with SA-100 anchor clips.

P. BIRD SCREEN: Conforming to Fed Spec RR-W-360, Type I, Class 1, 2 by 2 mesh, 0.063" diameter aluminum wire. Color to match louver.

Q. STEEL PLATE: Furnish steel plate for fabrication as indicated on the drawings. Furnish 1/4" or 3/8" thick checkered steel plate where indicated.

20 December 2007 05500-4 REY KEO 07001 R. ZINC-RICH COATING: Specially formulated compound conforming to Navy Specification MIL-P-21035 that will produce a coating of approximately 3.0 mils thickness containing not less than 95% zinc when applied in one (1) coat according to the manufacturer's instruction.

S. BITUMINOUS PAINT: Heavy bodied asphalt based paint conforming to military specification MIL-P-6883 or Fed Spec TT-V-51.

T. SHOP PAINT: Shop paint shall be suitable as a primer for the finish coats as specified in Section 09800, PROTECTIVE COATINGS. Contractor shall coordinate. Generally, shop paint shall be a rust inhibiter metal primer for miscellaneous steel, TNEMEC #99 for structural components.

2.02 FABRICATIONS

A. Fabricated components shall be assembled in the shop whenever possible. Steel shapes shall be cut to accurate size with sharp lines and smooth surfaces. Thickness of metal and general construction shall be adequate to withstand the stresses imposed on the component. Provide lugs and brackets necessary for connecting to other components.

B. Connections shall be secure, either welded or fastened with bolts or rivets. Where the component is to be exposed to view, connections shall be by welding with the welds ground smooth. Make up threaded connections tightly so that threads will be entirely concealed by fittings. Rivets, bolts, or machine screws may be used for field connections. Visible rivets, bolts, screws, etc., may have flush or oval heads and shall be countersunk. Seal-weld visible joints and exposed joints their entire length. Other joints may be spot or skip welded unless shown otherwise, or unless they must be continuous.

C. Holes for bolts and screws shall be drilled or punched. Mismatched holes shall not be allowed. Fasteners shall be concealed wherever possible. Exposed fasteners shall be of compatible materials and shall match color and finish or surrounding materials. Drill, punch, cut and tap steel as required for anchoring or accommodating the work of other trades as shown or where shown on the shop drawings.

D. Structural fabrications shall be made of standard rolled shapes, plates, bars, or strips.

E. Fabricated components noted to be galvanized shall be hot-dipped processed after fabrication. Galvanized shall conform to the requirements of ASTM A123 and A653 as applicable. In addition, components that are fabricated of ferrous metal and exposed on or outside of the exterior surfaces of the building above or below grade shall be hot- dipped galvanized after fabrication.

2.03 MANUFACTURED PRODUCTS

A. SAFETY TREADS: Safety treads and nosings shall be a 3"-wide abrasive-surfaced nosing cut to full width of stairs minus 1/8" each side for stairs, and width of concrete steps minus 3" each side for exterior concrete steps. Safety treads shall have integral anchors for embedding into concrete. Treads shall be as manufactured by Wooster,

20 December 2007 05500-5 REY KEO 07001 American Abrasive Metal Company, Mason Safety Tread Company, Armstrong products, or equal.

B. ALUMINUM LADDERS: Manufacturer's standard design aluminum ladder conforming to OSHA requirements and fabricated of aluminum side rails with non-slip safety rungs. Wall anchors shall be stainless steel, cadmium plated or other non-cor- rosive metal, as approved by the Engineer.

C. SAFETY LADDERS: Ladders may be shop fabricated or may be a standard product as manufactured by Cotterman Company, Croswell, Mississippi, Precision Stair Corp., Morristown, Tenn., O'Keefee Inc., San Francisco, CA, or equal. Ladders and safety cages shall conform to OSHA requirements and shall be complete with wall flanges to anchor to walls as required by the job condition.

2.04 STEEL FRAMES

A. Frames shall not have less than two (2) structural members which span across adjacent purlins. Openings shall be framed with steel angles of a size suitable for the opening size. When wood curbs are detailed as part of the frame design, provide angles having outstanding legs turned upward, with holes punched for attaching wood curbs. Holes shall be spaced at 12" centers, with first hole spaced four inches from each end and no side having less than three fasteners. Size of frames and opening dimensions shall be coordinated with equipment manufacturer. Minimum size of supporting angle shall be 3-1/2" x 5" x 3/8".

B. Frames used to support roof top air conditioning equipment shall have additional members to frame each side of duct penetrations of the roof surface, as well as structural members corresponding to the mounting curb perimeter dimensions.

C. Frames for roof drains and any other roof penetration not exceeding 24" square shall be a minimum size of 2-1/2" x 2-1/2" x 5/16". All other frames shall be as detailed on drawings, otherwise shall be framed with steel angles having a minimum size of 4" x 4" x 5/16".

2.05 CAST IRON CASTINGS Casting shall be uniform in quality, free from blow holes or other defects. Surface shall be smooth and true to pattern. Metal shall conform to ASTM A48, Class 40 for grey cast iron castings. Castings shall receive one coat of rust inhibited primer and shall be field painted as specified in Section 09800, PROTECTIVE COATINGS. Casing shall include the following: A. Wheel Guards - McKinley Type WG7, 24" H x 6" clearance.

B. Manhole Covers and Frames - McKinney or Neenah as specified in other Sections.

C. Trench Drains - Cast iron grates with angle frames having concrete anchors.

D. Downspout Boots - rectangular shaped boots having wings for attaching boot to building; McKinley Type DS1, or equal.

20 December 2007 05500-6 REY KEO 07001 E. Butter Boxes - McKinley Type GBL, light duty, size to match boot.

2.06 BRONZE CASTINGS

A. Castings shall be uniform in quality, free from injurious defects with smooth surfaces and true to pattern. Casting metal shall be CDA Alloy 844. Castings shall include the following:

B. Downspout nozzle: Josam 25010 Series satin-finish bronze nozzle with loose all flange and inlet threaded connection, size as required.

2.07 ARCHITECTURAL EXPANSION JOINT COVERS

A. Components shall be as manufactured by Architectural Arts Mfg. Inc., Balco, Inc., Nystrom, Construction Specialties, or approved equal. Expansion joints shall be fabricated of extruded aluminum 6063-T5 and shall be of the shape and type necessary for the particular application, similar to the following items manufactured by Architectural Arts: Description Architectural Arts model Floor to floor (Resilient flooring) C10-14-54 Floor to wall (Resilient flooring) C10-35-54 Floor to floor (No finish) C10-13-54 Floor to wall (No finish) C10-34-54 Wall to Wall (Gypboard) C10-52-54 Wall to corner (Gypboard) C10-61-54 Wall to wall (CMU) C10-51-54 Wall to corner (CMU) C10-61-54 Floor to floor (terrazzo) K10-13-11 Floor to wall (terrazzo) K10-31-11 Alternate wall to wall (Gypboard) J10-51-44 Alternate wall to corner J10-71-44 (Gypboard) Ceiling to ceiling J10-71-44 Ceiling to wall J10-71-44

B. All products shall be furnished by a single manufacturer and shall be the same type or series.

C. Where expansion joints occur in fire rated assemblies, manufacturer shall provide an expansion joint system that incorporates a fire barrier having the same rating as the assembly.

2.08 ACCESS LADDERS Roof access ladders shall be fabricated to meet OSHA standards. Side rails shall be a minimum of 3inches by 1/2 inch steel bars spaced not less than 18 inches apart. Rungs shall be a minimum of one-inch diameter having an abrasive filled bar and shall be spaced at 12 inch centers.

20 December 2007 05500-7 REY KEO 07001 3.00 EXECUTION

3.01 PREPARATION Inspect surfaces to receive metal components. Ascertain that surfaces are suitable for the attachment of the component.

3.02 FASTENERS

A. Furnish the appropriate type of fastener for the application. Fasteners shall be of the type and material proper for intended use and in sufficient quantity for the spacing. Bolts shall be a minimum of 1/2" diameter, spaced not to exceed 3 ft centers for attaching steel, or 2 ft centers for attaching wood.

B. Generally fasteners shall comply with Table 05500-A at the end of this section.

3.03 INSTALLATION

A. GRATING: Provide grating and frame in required size. Provide a band where edge of grating is open and visible, and at perimeter of cutouts. Fasten grating to frame at the ends of the third bearing bar from each side of the panel and to intermediate supports at the middle of the panel. Weld frame to imbedded plates, as shown on the drawings. Where hinged grating is indicated, provide a steel angle frame around opening. Provide extra heavy duty hinges and weld to grating and frame. Provide toe guards at openings in gratings where conduit or piping extends through grating flooring. Toe guards shall be 3/8" x 4" steel plates bolted or welded to grating.

B. ACCESS LADDERS: Install access ladders at locations specified. Provide steel clip angles at each leg and attach to concrete floor with expansion bolts. Provide steel strap supports to ladder legs and attach to construction with expansion bolts or by welding, as appropriate. Ladders shall be positioned to provide a minimum toe clearance of 8 inches.

C. ALUMINUM ACCESS LADDERS: Factory fabricated, aluminum access ladders shall be installed and be complete with aluminum non-slip safety rungs.

D. SAFETY TREADS: Install safety treads at each concrete step on the interior and exterior of the building. Tread shall be approximately 4" shorter than the stair tread width.

E. HATCHWAY: Frames shall be cast in place with the concrete structure. Provide copper or PVC tubing drain. Attach to drain nipple and extend to the outside. Hatchway shall be set plumb and level.

F. VENTILATORS: Install vent pipe at concrete vaults which is cast into place as concrete is placed. Vents shall be plumb and accurately placed in the structure.

G. JOIST ANCHORS: Furnish a steel anchor plate for each joist seat fabricated of steel plate with stud anchors. Unless noted otherwise, anchors for "K" series joists shall be 4" x 6" x 1/4" plates with two (2) 1/2" x 5" long stud anchors, and anchors for long span

20 December 2007 05500-8 REY KEO 07001 joists shall be 5" x 9" x 1/4". Anchor plates shall be cast into concrete masonry tie beam at joist locations.

H. ANCHOR PLATES: Furnish steel anchor plates to be cast into concrete structure and to be used for attaching precast concrete panels or steel members. Anchor plates shall be unpainted steel, except where plates are installed in exterior surfaces or within 1" of the exterior surface. Anchor plates shall be hot dip galvanized after fabrication.

I. WINDOW SILL: Furnish and install a window sill at every window opening (and louver location). Sills shall be the size required by the condition. Secure clip anchors to masonry and snap sill into place. Set sill in full bed of mastic.

J. ROOF FRAMES: Install a roof frame at each roof opening for air conditioning units, skylights, exhaust fans, flues, roof drains and vent stacks. Frames for roof drains and other penetrations not exceeding 24" square shall be framed with 2-1/2" x 2-1/2" x 5/16" steel angles frames. All other openings shall be according to details. Otherwise, they shall be fabricated with 4" x 4" x 5/16" support members with frame angles, as required. Set frames level and true and secure to structural purlins by field welding.

K. SAFETY LADDERS: Furnish and install fixed steel safety ladders.

L. HANGARS AND STRAPS: Provide metal hangars, straps, and bracing required to support and secure other work unless specifically shown or specified to be provided by another trade. Carefully coordinate this work.

3.04 ARCHITECTURAL EXPANSION JOINT COVERS

A. Furnish and install expansion joints at any exposed location that expansion joints occur, generally flush to surfaces. Expansion joints shall be the manufacturer's standard design similar to those specified. Provide fasteners of the appropriate type for the installation and attach securely. Install expansion joints at floors, walls, and ceilings. Other joints shall be normal service.

B. Protect aluminum surfaces in contact with concrete with a coat of zinc chromate.

C. Once expansion joints have been installed, protect from damage by covering with walkboards or other appropriate methods.

3.05 CLEANING AND PAINTING

A. clean all surfaces, remove rust and prepare for painting. Surfaces which will be inaccessible after fabrication or erection shall be painted prior to installation.

B. Except for galvanized steel and items specifically noted not to be painted, all miscellaneous metal component shall receive a shop coat of paint. Paint shall be applied by brush or spray, applied uniformly without runs or drips. Field painting shall be in accordance with 09800 PROTECTIVE COATINGS.

20 December 2007 05500-9 REY KEO 07001 C. Any fasteners or miscellaneous components applied on galvanized fabrications shall be galvanized, chrome-plated, or otherwise shall be painted with zinc-rich coatings.

D. Dissimilar materials: Where dissimilar metals are in contact, or where aluminum is in contact with concrete, mortar, masonry, pressure-treated wood or absorptive materials subject to wetting, the surfaces shall be protected with a coat of bituminous paint, unless otherwise specified, to prevent galvanic or corrosive action. Where stainless steel fasteners come in contact with structural steel, provide galvanic corrosion isolation washers.

3.06 SCHEDULES

FASTENERS SCHEDULE TABLE 05500-A DESCRIPTION SUBSTRATE COMMENTS

l

g

to to to d d d d to l oo oo oo oo ypsum tee tructura Masonry CMU Concrete Plaster W Metal W Concrete Steel to S Concrete S Base Plates G Wallboard W Blockin W Wood Machine Bolts With Lead Or Malleable Iron Shield. • • • • Toggle Bolts • • • • Embedded Anchor Bolts • • Gypsum Board Anchor • Machine Bolt / Nuts / Washers • • • • Lag Screws • • Nails / Screws • • Power Activated Fasteners • • • • • • • Self-drilling Anchors •

Schedule Notes: 1.This table is a general guide for fastener use. All fasteners shall be of size, type and length appropriate for the particular condition. Concrete anchors shall be AISI Type 316 stainless steel.

END OF SECTION

20 December 2007 05500-10 REY KEO 07001