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ST. BARBARA CATHOLIC SCHOOL TASK 2 75-24272-01 <br />DIOCESE OF ORANGE SEPTEMBER 12TH, 2024 <br />SANTA ANA, CA BID & PERMIT SET <br /> <br />METAL BUILDING SYSTEMS 133419 - 17 <br />I. Bracing: Install bracing in roof and sidewalls where indicated on erection drawings. <br />1. Tighten rod and cable bracing to avoid sag. <br />2. Locate interior end-bay bracing only where indicated. <br />J. Framing for Openings: Provide shapes of proper design and size to reinforce openings and to <br />carry loads and vibrations imposed, including equipment furnished under mechanical and <br />electrical work. Securely attach to structural framing. <br />K. Erection Tolerances: Maintain erection tolerances of structural framing within AISC 303. <br />3.4 METAL ROOF PANEL INSTALLATION <br />A. General: Provide metal roof panels of full length from eave to ridge unless otherwise indicated or <br />restricted by shipping limitations. <br />1. Install ridge caps as metal roof panel work proceeds. <br />2. Flash and seal metal roof panels with weather closures at eaves and rakes. Fasten with self- <br />tapping screws. <br />B. Standing-Seam Metal Roof Panels: Fasten metal roof panels to supports with concealed clips at <br />each standing-seam joint, at location and spacing and with fasteners recommended by <br />manufacturer. <br />1. Install clips to supports with self-drilling or self-tapping fasteners. <br />2. Install pressure plates at locations indicated in manufacturer's written installation <br />instructions. <br />3. Snap Joint: Nest standing seams and fasten together by interlocking and completely <br />engaging factory-applied sealant. <br />4. Seamed Joint: Crimp standing seams with manufacturer-approved motorized seamer tool <br />so that clip, metal roof panel, and factory-applied sealant are completely engaged. <br />5. Rigidly fasten eave end of metal roof panels and allow ridge end free movement for thermal <br />expansion and contraction. Predrill panels for fasteners. <br />6. Provide metal closures at peaks rake edges and each side of ridge caps. <br />C. Lap-Seam Metal Roof Panels: Fasten metal roof panels to supports with exposed fasteners at each <br />lapped joint, at location and spacing recommended by manufacturer. <br />1. Provide metal-backed sealing washers under heads of exposed fasteners bearing on weather <br />side of metal roof panels. <br />2. Provide sealant tape at lapped joints of metal roof panels and between panels and <br />protruding equipment, vents, and accessories. <br />3. Apply a continuous ribbon of sealant tape to weather-side surface of fastenings on end laps <br />and on side laps of nesting-type metal panels, on side laps of ribbed or fluted metal panels, <br />and elsewhere as needed to make metal panels weatherproof to driving rains. <br />4. At metal panel splices, nest panels with minimum 6-inch end lap, sealed with butyl-rubber <br />sealant and fastened together by interlocking clamping plates.