Determine the dead load (in pounds per square foot) of the roofing system. The plywood weighs 3 psf, and the unit weight of the 2 in x 16 in (the actual dimensions are ½ in smaller) southern pine rafters is 53 pcf.
Extracted text: three ply felt tar and gravel 2" insulation 3/4" plywood XXXX 12" 152" 20" to 20" Section