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<br />061140.3 – ROUGH CARPENTRY <br /> <br /> <br />Project Manual for Whitted Building Roof Replacement <br />Orange County, Hillsborough, NC <br />Prepared by Atlas Engineering, Inc., 551-A Pylon Drive – Raleigh, NC 27606 <br />May 2022 <br /> <br />E. Wood to wood: Minimum No. 10 stainless steel wood screws. Where additional wood blocking, roof <br />membrane, or sheetmetal flashing will cover the wood component, fastener heads must be either countersunk <br />or otherwise finish flush with the surface of the wood. Minimum fastener penetration into the wood blocking <br />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 shown or <br />spacing not noted, provide a maximum 12″ on center staggered for wood blocking with 2 fasteners at each <br />end or 1 fastener for each 2 square feet for plywood, unless otherwise required by the roof system <br />manufacturer. <br /> <br />G. Floor joist hangers: Shall be galvanized hangers similar to Simpson LU210. Use 3-inch coated deck <br />screws for securing joist hangers to new wood blocking and girder. Nails for joist connectors: Shall <br />be nails of type and size as required by connector 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 system <br />manufacturer for proper installation of the details. <br /> <br />D. Fasten existing wood nailers, blocking, etc., at spacings to comply with new membrane manufacturer’s <br />latest written instructions or the fastening requirements provided in this specification section, <br />whichever is more stringent. Wood blocking and nailers shall be securely anchored to the roof deck <br />to resist a minimum uplift force of 300 pounds per linear foot, but no more than 12″ o.c. apart. If <br />fastener pull-out values performed by the Contractor prior to start of work indicate that specified <br />fastening patterns will not meet this requirement, increase the number of fasteners as necessary to meet <br />requirement. <br />DocuSign Envelope ID: 89558C18-938A-4BFF-B14A-A2214E8AA5DD