Roof Rigid 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 rigid insulation weight psf.

The weights of material table in the steel manual and the minimum design dead loads table in asce 7 lists rigid insulation at 1 5 psf per 1 of thickness. Does anybody know what type of rigid insulation this is. A table of roof material weights including sheathing insulation and other decking materials. Weights of building materials.

Choose rigid insulation wisely and consider the effect its characteristics will have on the performance of the your project overall product cost and the best way to get the bang for your buck. Roof trusses span ft weight psf of horizontal plan area 30 5 0 35 5 5 40 6 0 50 6 5 60 7 5 80 8 5 100 9 5 120 10 5 150 11 5 floor joists i joists and open web depth in weight psf of horizontal plan area 9 1 2 2 5 11 7 8 3 5 14 4 0 16 4 5 18 5 0 20 5 5 24 6 0 26 6 3 28 6 6 30 7 0. 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. Rigid foam insulation packs a lot of r value into a thin package but not all rigid foam performs the same.

Rigid fiberglass 1 thick 1 5psf syrofoam 1 thick 0 2psf poured gypsum 1 thick 6 5psf rock wool roll or batt 1 0 4psf glass wool roll or batt 1 0 2psf vermiculite concrete 1 2 6psf sheathing 1 2 3psf petrical 1 thick 2 7psf. Roof dead loads in psf material weight felt per ply 5 gravel 4 roll roofing 1 235 ib shingles and paper 2 5 2 15 ib and i 90 ib 1 7 3 15 ib and i 90 ib 2 2 3 ply ready roofing 1 3 ply felt and gravel 5 6 4 ply felt and gravel 6 built up roof 5 ply felt and gravel 6 5 concrete plank 6 5 insulrock 2 7. Asce states that rigid roof insulation weighs 1 5 psf per inch of thickness whereas polyiso insulation like thermax is 0 25psf per inch. Asphalt roll roofing 1 1 lbm ft2 5 4 kg m2 asphalt shingle or asphalt fiberglass composite shingle 2 7 lbm ft2 13 2 kg m2 metal roofing aluminum or steel panel sheet or shingle 1 2 lbm ft2 5 9 kg m2 terne plate copper bearing steel sheet 0 7 lbm ft2 3 4 kg m2.