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IRC-1838 Indian River County <br />Main Library <br />Roof Replacement 05 31 23-5 Steel Roof Deck Repair <br />fasteners 8” on center maximum or a minimum of 2 screws per side. <br />E. Corrosion Degree 5: <br />1. Examine underside of steel deck for any conduit located directly below the deck <br />surface, anything suspended or fastened to the deck surface, etc. If necessary, <br />detach all objects from the bottom side of the deck to be removed. <br />2. Any deck meeting Corrosion Degree 5 shall be removed in its entirety. <br />3. Provide roof deck where existing is removed. <br />4. Overlap all deck end laps no less than 6" and as required to secure through both <br />panels and into the structural steel. Lap ends only over structural framing. Deck <br />fasteners shall penetrate deck panels no less than 2" from the edge of the panel. <br />5. Overlap all deck side laps to nest flush into neighboring deck panel. Install a <br />minimum of two deck side lap fasteners. <br />6. Workers shall apply their weight over the area being fastened to prevent deck <br />deflection and ensure complete contact between fasteners, deck and/or structural <br />steel. <br />7. Follow deck Manufacturer’s instructions and the latest edition of the Steel Deck <br />Institute (SDI) Specifications and Commentary. <br />3.4 STEEL DECK SECUREMENT <br />A. Fasten all steel deck panels to steel framing and steel deck side laps as indicated in the <br />contract drawings. <br />1. Field of Roof: Fasten deck to joists 12" on centers, one fastener in every other <br />deck rib. <br />2. Perimeter of Roof: Fasten deck to joists 6" on centers, one fastener in every deck <br />rib. <br />3. Deck Side-Lap Fastening: <br />a. Install two (2) deck panel side-lap fasteners between joists. Equally space <br />the fasteners no greater than 30” apart. <br />4. Fastener position/location: <br />a. Deck fasteners shall be driven in the center of the bottom of the deck rib. <br />The fasteners shall be driven within +/- 1/4" of the center of the structural <br />steel bearing surface. The fasteners shall be driven along the center of the <br />structural steel member, not near the edge of the structural steel. <br />b. Deck side lap fasteners shall be driven into the deck rib such that both <br />panels are penetrated. The side lap fastener shall be located along the <br />center of the bottom of the rib. <br />5. Workers shall apply their weight over the area being fastened to prevent deck <br />deflection and ensure complete contact between fasteners, deck and/or structural <br />steel. <br />3.5 INSTALLATION <br />A. Contractor shall follow deck Manufacturer’s instructions and the latest edition of the Steel <br />Deck Institute (SDI) Specifications and Commentary. <br />B. Deck panels shall be installed straight and true and shall be aligned with adjacent panels <br />end and side laps without bending or binding the decking. <br />C. Deck panel ribs shall contact bar joist top chord angles and other steel framing.