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<br />061000.3 – ROUGH CARPENTRY <br /> <br /> <br />Project Manual for Motor Pool Main Building Roof Replacement <br />Orange County, Hillsborough, NC <br />Prepared by Atlas Engineering, Inc., 551-A Pylon Drive – Raleigh, NC 27606 <br />August 2021 <br />C. Wood to steel angles: Minimum self-tapping, 410 stainless steel 1/4″ no. 14 screws and a minimum <br />of 2.5″ long. Use a flat head screw. <br /> <br />D. Wood to metal (general): Minimum self-tapping, stainless steel no. 12 screws. Where additional <br />wood blocking, roof membrane, or sheetmetal flashing will cover the wood component, anchor <br />heads must be either countersunk or otherwise finish flush with the surface of the wood. <br />Minimum fastener penetration shall be 1″, unless otherwise required by the manufacturer to meet <br />required pull-out resistance. <br /> <br />E. Wood to wood: Minimum No. 10 stainless steel wood screws. Where additional wood blocking, <br />roof membrane, or sheetmetal flashing will cover the wood component, fastener heads must be either <br />countersunk or otherwise finish flush with the surface of the wood. Minimum fastener penetration <br />into the wood blocking substrate below shall be 1-1/4″. <br /> <br />F. Fastener spacing is generally indicated on the design details, but if fasteners are not specifically <br />shown or spacing not noted, provide a maximum 12″ on center staggered for wood blocking with 2 <br />fasteners at each end or 1 fastener for each 2 square feet for plywood, unless otherwise required by <br />the roof system manufacturer. <br /> <br />PART 3 EXECUTION <br /> <br />3.01 INSPECTION <br /> <br />A. Verify that existing construction is sound and dry so as to adequately support new roofing <br />components. <br /> <br />B. Verify that curbs are sound, firmly anchored, smooth, and clean on surfaces scheduled to receive <br />new nailers. <br /> <br />C. Verify that surfaces of masonry walls are level, sound, firmly anchored, and smooth. <br /> <br />D. The Owner’s representative and the Contractor shall document the actual quantities of materials <br />installed when existing deteriorated materials must be replaced. <br /> <br />3.02 INSTALLATION – NAILERS AND BLOCKING <br /> <br />A. Verify that existing construction is sound and dry so as to adequately support new components. <br /> <br />B. Install wood perimeter blocking where shown on the drawings or indicated in the specifications. Cut <br />blocking to size where shown on the drawings or required for proper installation of the work. <br /> <br />C. Install new wood blocking at other locations as shown on the drawings or required by the roof <br />system manufacturer for proper installation of the details. <br /> <br />D. Fasten existing wood nailers, blocking, etc., at spacings to comply with new membrane <br />manufacturer’s latest written instructions or the fastening requirements provided in this specification <br />section, whichever is more stringent. Wood blocking and nailers shall be securely anchored to the <br />DocuSign Envelope ID: 9514E4EC-C3C9-4752-8A7F-22E83B22BB8E