Composite Decking Weight Vs. Wood | Hunker
Decking is sold in the nominal 5/4-by-6 size, which actually measures 1 inch by 5-1/2 inches. Each linear foot of decking thus contains 66 cubic inches, or 0.03819 cubic feet. A 12-foot decking board of nominal size 5/4–by-6 contains 0.4583 cubic feet of material.
