12,0
{
* Wood joist flat roof *
-white gravel surface
-5 ply roofing
-joists 16" o.c.
-4x10 double header at edges
(roofing felt 30 | 1.835 ft ,
 base sheet | 1.06 sq ft ,
 rigid insulation 4" | 1 sq ft ,
 plywood type I. 3/4" | 1 sq ft ,
 2x10 wood joists | .75 ft ,
 2x10 wood joists _ 2 ft ,
 regular gypsum wallboard 3/4" | 1 sq ft )
}
22,0
{
* Steel floor deck *
(-flooring- # 0 - ,
 concrete & 1 cu ft ,
 copper alloy sheet steel | 1 sq ft )
}
2,0
{
* Wood joist floor *
-joists 16" o.c.
-4x10 double header at edges
(-flooring- # 0 - ,
 plywood type I. 3/4" | 1 sq ft ,
 2x10 wood joists | .75 ft ,
 2x10 wood joists _ 2 ft ,
 regular gypsum wallboard 1/2" | 1 sq ft )
}
