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3. Ply felts: 3 plies coated ply sheet. <br /> 4. Interply bitumen: Coal Tar Pitch,ASTM D 450-78,type as required by slope. <br /> 5. Deck primer at concrete deck. <br /> 6. Tape: Fiberglass roof tape. <br /> 7. Temperature limitations: <br /> a. Maximum 400°F. <br /> b. Minimum 300°F. <br /> C. Recommended 375°F. (350°F max.in kettle storage) <br /> 8. Envelopes as required. <br /> 9. Follow precautions contained in NIOSH Publication DREW 78-107. <br /> C. Aggregate: Clean,smooth river gravel,ASTM D 1863. <br /> D. Insulation: Rigid glass fiber boards with integrally bonded top covering of saturated felt or Kraft paper. <br /> E. Walkway protection boards(if required): Mineral surfaced bituminous composition boards;Carey-Tread by r <br /> Celotex Corp.or approved equal. <br /> PART 3: EXECUTION <br /> 3.01 INSTALLATION <br /> A. Inspect substrate and report unsatisfactory conditions in writing. Beginning work means acceptance of substrate. <br /> Coordinate installation with other trades,including carpentry,flashing and penetrating work. <br /> B. Comply with NRCA Roofing and Waterproofing Manual and manufacturer's installation instructions. <br /> C. Clean,prime and prepare substrate. <br /> D. Install insulation in one layer with tightly butted joints and neatly fitted around penetrations. <br /> E. Install walkway protection membrane at locations indicated and where required to provide access to roof mounted <br /> equipment. <br /> F. Restore or replace damaged components. Protect work from damage. <br /> END OF SECTION 07520 <br /> r <br /> r <br /> r <br /> 07520-2 No.99132-CP2 <br />