ESTIMATES FOR BF WOOD
FORMWORKS:
1. Form Lumber = 110-140 bf / cubic meter of concrete
2. Form ply wood = 0.8 pieces of 4’x8’ plywood form per cubic of concrete.
3. Assorted Nails= 1 keg of assorted nails per 2000 bf of nailing surface.
Legend:
45 kilos of nails = 1 keg
1 keg = 100 lbs. = 45 kg.
FORMULAS TO FIND APPROXIMATE NO. OF NAILS REQUIRED ( REF. U. S. ARMY ENGINEER FIELD DATA)
No. of pounds ( 12d + 60 d, framing) = d /6 x bf/ 100
No. of pounds (2d + 12 d, sheathing) = d/ 4 x bf/100
Where:
d = Size of desired Nail in Pennies
bf = Total Board Feet to be nailed
