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IRC-1838 Indian River County Main Library Roof Replacement 05 31 23-6 Steel Roof Deck Repair D. At large deck penetrations with steel framing around the penetration, the deck ribs that are parallel to steel framing shall bear completely on steel framing. Framing shall be added by the Contractor. E. Where equipment, pipes, etc. penetrate the deck, the deck shall be cut to fit against the equipment, with no gaps between the deck and penetration exceeding ½". For support, the Contractor shall install steel framing around the penetration. F. Deck End Laps and Side Laps: 1. Deck end laps shall extend over the bar joist top chord angles, and fully over all other structural steel support members. 2. Overlap all deck end laps no less than 4" and ensure both panels bear over the top chord of the joist. 3. At deck end laps, deck fasteners shall penetrate both deck panels through the 4" lap. The fastener shall penetrate the two deck panels no less than 2" from the edge of each panel. 4. Deck side laps shall nest flush into neighboring deck panels. 5. Where deck sides terminate onto structural framing, the bottom of the deck rib shall bear fully on the steel framing. 6. Fasten all deck panels to steel framing. Install deck side lap fasteners. G. Deck Fastening: 1. Field of Roof: Fasten deck to joists 12" on centers, one fastener in every other deck rib. 2. Perimeter of Roof: Fasten deck to joists 6" on centers, one fastener in every deck rib. 3. Workers shall apply their weight over the area being fastened to prevent deck deflection and ensure complete contact between fasteners, deck and/or structural steel. H. Deck Side-Lap Fastening: 1. Install two (2) deck panel side-lap fasteners between joists. Equally space the fasteners no greater than 30” apart. 2. Workers shall apply their weight over the area being fastened to prevent deck deflection and ensure complete contact between fasteners, deck and/or structural steel. I. Fastener position/location: 1. Deck fasteners shall be driven in the center of the bottom of the deck rib. The fastener shall be driven within +/- 1/4" of the center of the structural steel bearing surface. The fasteners shall be driven along the center of the structural steel member, not near the edge of the structural steel. 2. Deck side lap fasteners shall be driven into the deck rib such that both panels are penetrated. The side lap fastener shall be located along the center of the bottom of the rib. J. Deck openings less than 12”: 1. Fasten 18 gage sheet metal over or around opening, into deck top flange spaced no greater than 12" apart. 2. For above-deck roofing components, cut sheet metal to conform to penetration and fasten sheet metal to top flange of deck to support above-deck components. 3. Where the hole/penetration is at a deck lap, fasten the deck side lap on either side of the hole/penetration to pull the lap together tight.