������������������������ SECTION 05312
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�������������������� COMPOSITE STEEL DECK
PART 1� GENERAL
1.1 SECTION INCLUDES
��� A.� Composite steel deck.
��� B.� Closures and fillers.
��� C.� Fastening of deck.
1.2 RELATED SECTIONS
��� A.� Section 03300 - Cast-In-Place Concrete.
��� B.� Section 05120 - Structural Steel.
1.3 REFERENCES
��� A.� ASTM A 611 - Standard Specification for Steel, Sheet, Carbon, Cold-Rolled, Structural Quality.
��� B.� ASTM A 653/A 653M - Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy Coated (Galvannealed) by the Hot-Dip Process.
��� C.� ASTM A 924 - Standard Specification for General Requirements for Steel Sheet, Metallic-Coated by the Hot-Dip Process.
��� D.� AWS D1.3 - Structural Welding Code - Sheet Steel;� American Welding Society.
��� E.� Fire Resistance Directory;� Underwriters Laboratories Inc. (UL).
��� F.� SDI 29 - Steel Deck Institute Design Manual for Composite Decks, Form Decks, Roof Decks, and Cellular Metal Floor Deck with Electrical Distribution;� Steel Deck Institute, Inc. (SDI).
��� G.� SDI DDM02 - Diaphragm Design Manual;� Steel Deck Institute, Inc. (SDI).
��� H.� Specification for the Design of Cold-Formed Steel Structural Members;� American Iron and Steel Institute (AISI).
1.4 SUBMITTALS
��� A.� Submit under provisions of Section 01300.
��� B.� Product Data:�
������� 1.� Submit for each type of decking specified, including dimensions of individual components, profiles, and finishes.
������� 2.� Mechanical fasteners:� Test reports from a qualified independent testing agency evidencing compliance with requirements based on comprehensive testing.
��� C.� Shop Drawings:� Show location of deck units, anchorage details, and other information required for a thorough review.
��� D.� Product Certificates:� Signed by the manufacturer of the steel deck, certifying the supplied products comply with specified requirements.
��� E.� Welder Certificates.
1.5 QUALITY ASSURANCE
��� A.� Manufacturer Qualifications:� Member of the Steel Deck Institute.
��� B.� Codes and Standards:� Comply with applicable provisions of the following specifications:
������� 1.� American Iron and Steel Institute (AISI).
������� 2.� American Welding Society (ANSI/AWS D1.3 Structural Welding Code/Sheet Steel).
������� 3.� Steel Deck Institute (SDI).
��� C.� Each welder shall have satisfactorily passed A.W.S. Qualification tests for welding processes involved, and if applicable, shall have undergone recertification.
1.6 DELIVERY, STORAGE, AND HANDLING
��� A.� Protect steel deck from corrosion, deformation, and other damage during delivery, storage and handling.�
��� B.� If ground storage is needed, store deck bundles off the ground, with one end elevated to provide drainage.� Protect bundles against condensation with a ventilated waterproof covering.� Stack bundles so there is no danger of tipping, sliding, rolling, shifting or material damage.� Check bundles periodically for tightness, and retighten as necessary so wind cannot loosen sheets.
��� C.� Place deck bundles on the building frame near a main supporting beam at a column or wall.� Do not place bundles on unbolted frames or on unattached or unbridged joists.�� Ensure that the structural frame is properly braced to receive the bundles.
PART 2� PRODUCTS
2.1 MANUFACTURER
��� A.� Provide products fabricated by United Steel Deck, Inc.;� 14 Harmich Rd. South Plainfield, NJ� 07080.� Telephone: 908-277-1617 or 800-631-1215;� Fax: 908-277-1619.
2.2 MATERIALS
��� A.� Sheet Steel for Galvanized Deck and Accessories:� ASTM A 653 Structural Quality, minimum yield strength of 33 ksi (230 MPa).� Galvanizing:� ASTM A 924 with a minimum coating class of G30 as defined in ASTM A 653.
��� B.� Sheet Steel for Deck and Accessories:� ASTM A 611 with a minimum yield strength of 33 ksi (230 MPa).
��� C.� Deck Type and Thickness:� As shown on the drawings.
��� D.� Deck shall be ______ with a minimum metal thickness of _____.
��� E.� Select deck to provide the load capacities shown on the drawings and as determined using the Steel Deck Institute construction loading criteria.
��� F.� The deck type provided shall be capable of supporting the superimposed live loads indicated on the drawings.
��� G.� Whenever possible, deck shall be multi-span and shall not require shoring during the concrete placement procedure.
��� H.� Where fire resistance rated assemblies are required, provide UL-listed units.� Identify steel deck bundles with labels bearing the UL mark.�
������� 1.� UL Design Number:� ______.
������� 2.� UL Design Number:� As indicated on the drawings.
2.3 ACCESSORIES
��� A.� Pour stops, column closures, end closures, cover plates, and girder fillers shall be the type required by the Steel Deck Institute.
��� B.� Mechanical fasteners or welds are acceptable for accessory attachments.
PART 3� EXECUTION
3.1 EXAMINATION
��� A.� Examine support framing and field conditions for compliance with requirements for installation tolerances and other conditions affecting performance of work of this section.�
3.2 PREPARATION
��� A.� Place deck in accordance with approved placement plans.
��� B.� Do not place deck panels on concrete support structure until concrete has cured and is dry.
��� C.� Locate deck bundles to prevent overloading of support members.
3.3 INSTALLATION, GENERAL
��� A.� Install deck panels and accessories according to Steel Deck Institute specifications and recommendations, and in accordance with placement plans and requirements of this section.
��� B.� Install temporary shoring, if required, before placing deck panels.
��� C.� Place deck panels on structural supports and adjust to final position with ends aligned.� Attach firmly to the supports immediately after placement in order to form a safe working platform.
��� D.� Cut and neatly fit deck units and accessories around openings and other work projecting through or adjacent to the decking.
��� E.� Do not cut unscheduled openings through the deck without the approval of the Architect;� reinforce openings as directed.
3.4 INSTALLATION, FLOOR DECK
��� A.� Anchor floor deck units to steel supporting members by arc spot puddle welds of the following diameter and spacing or fillet welds of equal strength:
������� 1.� Weld diameter:� Minimum visible 5/8 inch (15 mm).
������� 2.� Weld spacing:� Weld edge ribs of panels at each support.� Space additional welds an average of 12 inches (300 mm) apart but not more than 18 inches (460 mm).
������� 3.� Mechanical fasteners, either powder actuated or pneumatically driven, or screws may be used in lieu of welding to fasten deck to supporting framing, provided they have been specifically approved.
������� 4.� Fasten side laps and perimeter edges of units between supports at intervals not exceeding 36 inches (1 m) on center, using one of the following methods:
����������� a.� #10 self drilling screws;
����������� b.� Crimp or button punch
����������� c.� Arc puddle welds 5/8 inch (15 mm) minimum visible diameter, or 1 inch (25 mm) long fillet welds.
��� B.� End Bearing:
������� 1.� Install deck ends over supports with a minimum end bearing of 1.5 inches (40 mm).
��� C.� Pour Stops and Girder Fillers:� Fasten pour stops and girder fillers to supporting structure according to the manufacturer's recommendations.�
��� D.� Floor Deck Closures:� Fasten column closures, cell closures, and Z closures to deck to provide tight fitting closures at open ends of ribs and sides of decking.� Fasten cell closures at changes of direction of floor deck units unless otherwise directed. �
3.5 REPAIRS
��� A.� Before concrete placement:
������� 1.� Inspect the deck for tears, dents, or other damage that may prevent the deck from acting as a tight and substantial form or that would impair structural capability.
������� 2.� Repair tears, dents, or other damage.
������� 3.� Obtain the approval of the Architect.
��� B.� Determine the need for temporary shoring of deck before concrete placement.
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