Roof Material Dead Load Table

235 lb. shingles and paper.............2.5 psf Without ceiling......................................1.0 psf
 2-15 lb. and 1-90 lb..................1.7 psf With ceiling  (be sure to add wt. of ceiling)  ...1.5 psf
 3-15 lb. and 1-90 lb..................2.2 psf
 3-ply and gravel......................5.6 psf CEILING
 4-ply and gravel......................6.0 psf
 Acoustical fiber tile.................1.0 psf
 ROOF SHEATHING 1/2 in. gypsum board...2.0 psf
 5/8 in. gypsum board..................2.5 psf
 3/8 in. plywood.......................1.1 psf Plaster (1 in. thick)...............................8.0 psf
 1/2 in. plywood.......................1.5 psf Metal suspension system......................0.5 psf
 5/8 in. plywood.......................1.8 psf Wood suspension system......................2.0 psf
 3/4 in. plywood.......................2.3 psf
 1-1/8 in. plywood.....................3.4 psf FLOORS
 1 in. sheathing (nominal).............2.3 psf
 2 in. decking.........................4.3 psf Hardwood (Nominal 1 in.).....................3.8 psf
 Concrete (1-1/2 in. thick)
 MISC DECKING MATERIALS Regular. ......17.5 psf
 Lightweight...........................12.5 psf
 Tectum..............(1 in. thick)......2.0 psf Linoleum or soft tile..............................1.5 psf
 Insulrock...........(1 in. thick)......2.7 psf 3/4 in. ceramic or quarry tile..............10.0 psf
 Poured gypsum.......(1 in. thick)......6.5 psf
 Vermiculite concrete.1 in. thick)......2.6 psf FRAMING MEMBERS (32 pcf)

 Corrugated galvanized steel  Size 24 in. ctrs.
 16 ga. ................................2.9 psf 2 x 4.........................1.4 plf..................0.7 psf
 20 ga. ................................1.8 psf 2 x 6.........................2.2 plf..................1.1 psf
 22 ga. ................................1.5 psf 2 x 8.........................2.9 plf..................1.5 psf
 24 ga. ................................1.3 psf 2 x 10.......................3.7 plf..................1.9 psf
 26 ga. ................................0.9 psf 2 x 12.......................4.4 plf..................2.2 psf
 29 ga. ................................0.7 psf
 TRUSS WEIGHT (Approximate)
 ROLL OR BATT INSULATION

 Top Bottom 24 in. ctrs.
 Rock Wool...........(1 in. thick)......0.2 psf 2 x 4 - 2 x 4...........5.2 plf..................2.6 psf
 Glass Wool..........(1 in. thick)......0.3 psf 2 x 6 - 2 x 4...........6.1 plf..................3.1 psf
 ALPOL..................................0.1 psf 2 x 6 - 2 x 6...........6.9 plf..................3.5 psf
 2 x 8 - 2 x 6..7.8 plf.................3.9 psf
 RIGID INSULATION 2 x 8 - 2 x 8.........8.5 plf..................4.3 psf
 2 x 10 - 2 x 8...........9.3 plf..................4.7 psf
 Temlock........................(1 in. thick)......1.2 psf 2 x 10 - 2 x 10........10.0 plf..................5.2 psf
 Cork............................ (1 in. thick)......0.7 psf 2 x 12 - 2 x 10........10.9 plf..................5.5 psf
 Gold Bond....................(1 in. thick)......1.5 psf 2 x 12 - 2 x 12........11.6 plf..................5.8 psf
 Styrofoam.................... (1 in. thick)......0.2 psf
 Foamglass.....................(1 in. thick)......0.8 psf  We suggest the addition of 1.5 psf for miscellaneous
 Rigid Fiberglass............(1 in. thick)......1.5 psf  dead loads.
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