Roof Covering; - Class A, B or C roof covering; Roof Substrate; - 23/32 in. (18 mm) thick plywood underlayment; Structural Member - Open web wood truss spaced 24 in. (609 mm) OC; Foamed Plastic - Max. 10 in. (254 mm) thick spray foam insulation applied to underside of roofing system; Ceiling Support - Resilient channels spaced max. 12 in. (305 mm) OC; Finished Ceiling - 5/8 in. (16 mm) thick.
The Best Materials to Use as a Roof Deck. In the Twenty-First Century, you don't have to build your roof deck out of simple wood or concrete. Many new materials and options are available, depending on the budget and vision you have in mind for your exterior deck, though several durable, economic surface materials stand out above the rest.
Roof Covering; Roof Substrate; Roof Deck; Structural Member - Open web wood truss; Ceiling Support - Resilient channels; Finished Ceiling - 5/8 in. (15.9 mm) thick gypsum board
Abbreviations xx. Historically, abbreviations were used frequently in construction documents as part of standard practice. They were part of the drawing symbology, but …