CCAC West Hills Campus WHC Main Roof Project WHC Main Roof Project
Date of Issue (05/26/2022)
12.
Gutter at Draining Edge: Plates TP-22 and TP-22S.
13.
Expansion Joint, with metal cover: Plates TP-7 and TP-7S.
14. Expansion Joint, with premanufactured cover: Plates TP-7A and TP-7AS. 15. Curb Detail at Rooftop HVAC Units, Premanufactured: Plates TP-12 and TP-12S. 16. Curb Detail at Rooftop HVAC Units, Job-Built, Wood: Plates TP-13 and TP-13S. 17. Curb Detail at Skylight, Roof Hatch, and Smoke Vents: Plates TP-14 and TP-14S. 18. Penetration, Structural Member: Plates TP-15 and TP-15S. 19. Penetration, Sheet Metal Enclosure: Plates TP-16 and TP-16S. 20. Penetration, Stack Flashing: Plates TP-17 and TP-17S. 21. Penetration, Plumbing Vent: Plates TP-18 and TP-18S. 22. Penetration, Plumbing Vent, Premanufactured Boot: Plates TP-18A and TP-18AS. 23. Penetration, Pocket: Plates TP-19 and TP-19S. 24. Roof Drain: Plates TP-20 and TP-20S. 25. Guide for Clearances between Pipes / Walls / Curbs – Table 4. 26. Guide for Crickets and Saddles – Table 5. 27. Guide for Edge Scuppers with Tapered Saddles - Table 6.
3.4
INSULATION INSTALLATION
A. Coordinate installing membrane roofing system components so insulation is not exposed to precipitation or left exposed at the end of the workday. B. Comply with membrane roofing system and insulation manufacturer's written instructions for installing roof insulation. C. Tapered Insulation and Crickets: Install tapered insulation under area of roofing to conform to slopes indicated. 1. Where crickets are indicated or required to provide positive slope to drain, make slope of crickets minimum of two times the roof slope, not less than 1/4 inch in 12 inches (1:48). D. Install insulation under area of roofing to achieve required thickness. Where overall insulation thickness is 2.7 inches (70 mm) or greater, install two or more layers with joints of each succeeding layer staggered from joints of previous layer a minimum of 6 inches (150 mm) in each direction.
075419 - Page 11 of 14 POLYVINYL-CHLORIDE (PVC/TPA) ROOFING
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