2016 CDM Smith All Rights Reserved July 2016 SECTION COMPOSITE STEEL FLOOR DECK

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1 PART 1 GENERAL 1.01 SCOPE OF WORK SECTION COMPOSITE STEEL FLOOR DECK A. Furnish all labor, materials, equipment and incidentals required and install composite steel floor deck complete as shown on the Drawings and as specified herein RELATED WORK A. Cast-in-place concrete is included in Section B. Structural steel is included in Section C. Miscellaneous metal is included in Section D. Field painting is included in Section SUBMITTALS A. Submit, in accordance with Section , shop drawings and product data showing the following: 1. Location and size of all members. 2. Materials, finishes and details of construction of all members. 3. Manufacturer's load table including design thickness in inches and section properties. 4. Fastener types and layout patterns. 5. Erection marks. Mark each bundle to correspond to the shop drawings. B. Certification for Welders 1.04 REFERENCE STANDARDS A. Steel Deck Institute (SDI) 1. SDI Specifications and Commentary for. B. ASTM International 1. ASTM A653 - Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc- Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process. 2. ASTM A780 - Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings. Issued for Construction

2 3. ASTM A924 - Standard Specification for General Requirements for Steel Sheet, Metallic- Coated by the Hot-Dip Process. C. American Iron and Steel Institute (AISI) 1. AISI SG Cold-Formed Steel Design Manual. D. Where reference is made to one of the above standards, the revision in effect at the time of the bid opening shall apply QUALITY ASSURANCE A. Composite steel floor deck: Conform to the requirements of the SDI Standard Specifications for. B. Field welding: Shall be performed by certified welders and in accordance with the AISI SG-673 standard. Certification shall be by test within the past 6 months to perform type of work required in conformance with the AISI Specification. Testing to be conducted and witnessed by an independent testing laboratory provided by the Contractor DELIVERY, STORAGE AND HANDLING A. Handle material with cranes and derricks. Do not dump materials off cars or trucks, or handle in any way that will cause damage. B. Store materials off the ground with one end elevated to provide drainage. Protect from the elements with a waterproof covering, ventilated to avoid condensation. C. Remove and replace damaged material with new undamaged materials PROJECT/SITE REQUIREMENTS A. Notify the Engineer of any inaccuracies in alignment or level of structural steel in writing and correct before the deck is placed at no additional cost to the Owner DEFINITIONS A. Transverse supports - supports which are perpendicular to the direction of the deck ribs. B. Longitudinal support - supports which are parallel to the direction of the deck ribs. PART 2 PRODUCTS 2.01 MATERIALS A. and Accessories 1. Composite steel floor deck shall be 2-in rib depth, B-LOK by United Steel Deck Inc.; 2 VL by Vulcraft; Super-Bond 2-in V-Grip by Wheeling Corrugating Co. or equal. Deck sheets shall be 36-in wide with nestable side laps. Gauge shall be as shown on the Drawings. Issued for Construction

3 2. Composite steel floor deck and accessories shall be galvanized in accordance with ASTM A653, coating designation G Composite steel floor deck and accessories shall be manufactured from steel conforming to ASTM A653 SQ, Grade 33, 40 or Accessories: Provide minimum 20 gauge galvanized cell closures, flat closure plates, girder fillers, column closures and pour stops as shown on the Drawings and as specified herein. B. Screws shall be self-drilling, self-tapping hex washer head No. 10 TEKS screws with corrosion resistant coating. C. Provide galvanize touch-up to repair damaged surfaces. Use Endupor, zinc-rich coating by Dampney Manufacturing Co., Everett, MA; ZiRP, zinc-rich coating by Duncan Galvanizing Corp, Everett, MA; ZRC Cold Galvanizing Compound by ZRC Chemical Products Co., Division of Norfolk Corp., Quincy, MA, or equal. PART 3 EXECUTION 3.01 INSTALLATION A. Install composite steel floor deck as shown on the Drawings, in accordance with manufacturer's instructions and in accordance with approved shop drawings. Extend deck sheets over three or more spans. B. End laps of composite steel floor deck shall be at least 2-in long and shall occur over transverse supporting members. End bearing length of composite steel floor deck shall be at least 2-in. C. Provide temporary shoring for composite steel floor deck in accordance with the SDI Specifications and the manufacturer's written instructions. D. Fasten deck to all supporting steel to accommodate diaphragm action as specified below: 1. Fasten at interior and end transverse supports with 5/8-in diameter arc spot welds at the bottom of every second rib at each support and at a spacing not to exceed 12-in with one fastener always occurring at the side laps. Fasten partial sheets (those less than 36-in wide) at the bottom of every rib. 2. Fasten at interior and exterior longitudinal supports with 5/8-in diameter arc spot welds at a spacing not to exceed 12-in. 3. Connect the deck sheets along their side laps with No. 10 TEKS screws, at a spacing not to exceed 12-in. E. Maintain contact between deck sheets and between deck sheets and steel supports while fastening composite steel floor deck to reduce burn holes at welded connections and to eliminate eccentricities between the connected parts at screwed connections. F. Welds to supporting members at end laps and side laps shall go through both sheets and fuse to the supporting steel. Issued for Construction

4 G. Install screws using tools that prevent fracturing screws, damaging screw heads or stripping threads due to overdriving. H. Install another screw adjacent to fractured or stripped screws. Remove screws where eccentricities exist between deck sheets and between deck sheets and steel supports and install another screw nearby while maintaining contact between the parts to be connected. I. Coordinate indicated penetration size, location and details with other trades and details of approved equipment. Pipe and conduit openings in the steel floor deck shall be reinforced according to the manufacturer's recommendation. 1. Cutting and Fittings a. Cut and fit steel floor deck units and accessories around projections through steel deck. b. Cuts shall be square and free of burrs. c. Cut openings in steel deck true to dimensions. Do not use cutting torches if deck is to be exposed in the finished condition. d. Reinforce openings greater than 6-in and less than 12-in in greatest dimension with a 24-in by 24-in flat plate, minimum 20 gauge thickness, centered on the opening. J. Weld accessories directly to composite steel floor deck. 1. Flat Closure Plates, Girder Fillers and Column Closures a. Weld to top surface of composite steel floor deck and supporting steel at no more than 12-in on center. b. Lap end joints not less than 3-in. 2. Cell Closures a. Install cell closures at all open uncovered ends and edges of composite steel floor deck and in voids between deck and other construction. b. Weld to top surface of composite steel floor deck at not more than 12-in on center. 3. Pour Stops a. Provide pour stops at the perimeter of composite steel floor deck. b. Provide minimum 2-in bearing on supporting steel. Weld to supporting steel with 1-in long fillet welds, at a maximum spacing of 12-in. K. Do not attach suspended ceilings, light fixtures, ducts, piping, conduits or other utilities to composite steel floor deck PREPARATION FOR CONCRETING A. After erection, remove metal cuttings and construction debris from cells for entire length. Remove grease, oil, ice, snow, water, and other foreign material. Leave deck and cells in clean condition for obtaining bond with concrete fill, spray fireproofing and/or paint coatings as shown on the Drawings and as specified herein TOUCH-UP PAINTING A. Clean and repair all steel surfaces which have become abraded or where galvanizing has been damaged due to welding and/or erection procedures. Issued for Construction

5 B. Repair abraded or damaged areas using the touch-up material specified above to produce a dry film thickness of not less than 6 mils. Conduct all repairs of galvanizing in accordance with ASTM A INSPECTION A. The Engineer will inspect composite steel floor deck in the field for compliance with this Section and the approved shop drawings. The Engineer shall reject and require repair or replacement of any composite steel deck or accessories not meeting the requirements of this Section at no additional cost to the Owner. END OF SECTION Issued for Construction

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