Roof Insulation Weight Psf

In the past couple of years many of you have pursued bid work primarily because the current market for our traditional design build business has dramatically declined.

Roof insulation weight psf.

The weight of truss rafter must be added to calculate the dead load of the roof. Weight psf sheathing plywood per in. Thickness 3 4 10 0 concrete fill per 1 in. 9 aug 17 15 48.

Weights of building materials. Description weight psf roof dead load framing sheathing asphalt shingles insulation drywall 10 exterior wall 2 4 framing sheathing siding insulation drywall 10 floor joist sheathing carpeting drywall 10 concrete wall 8 in. A built up roof for example will typically include the built up membrane itself with or without gravel as well as some kind of insulation and cover board which will vary in thickness from roof to roof. Thickness 5 0 lumber sheathing per 1 in.

This equals the original roofing weight of 3 0 psf. Weights of building materials pounds per square foot psf ceiling acoustical fiber board 1 1 suspended steel channel system 1 2 suspended wood channel system 2 5 2x8 ceiling joists 16 o c r 49 insulation 1 2 gypsum board 7 1 plaster 8 1 2 gypsum board 1 2 2 5 8 gypsum board 1 2 75 roof fiberglass shingles 3. We need to convert this to weight on a horizontal projected area so the shingle weight becomes 2 5 psf times 1 2 or 3 0 psf. Thickness 12 0 ceramic or quarry tile in.

Asce states that rigid roof insulation weighs 1 5 psf per inch of thickness whereas polyiso insulation like thermax is 0 25psf per inch. When it comes to estimating the weight of an existing roof field verification of the in place construction is necessary. Thick 150 concrete block wall 8 in. A table of roof material weights including sheathing insulation and other decking materials.

Thickness 12 0 gypsum fill per 1 in. Thick 125 12 in. 3 ply ready roofing 1 0psf 2 15 lb 1 90lb 1 7psf 3 15 lb 1 90lb 2 2psf 3 ply gravel 5 6psf 4 ply gravel 6 0psf 5 ply gravel 6 5psf. Thickness 1 8 0 4 gypsum sheathing per 1 in.

Thickness 2 5 floors and floor finishes asphalt mastic per 1 in. Thick 100 10 in.