WEIGHTS OF BUILDING MATERIALS


Use these weights to determine the total load(s) to be supported in your particular situation. Examples of "Loading Lists" follow this section.

Roofing

Materials

Douglas Fir Members
Weights In Pounds Per Square Foot (U.N.O.)
Spacing (inches)
Size 12" centers 16" centers 24" centers
2 x 4 1.4 1.1 0.7
2 x 6 2.2 1.7 1.1
2 x 8 2.9 2.2 1.5
2 x 10 3.7 2.8 1.9
2 x 12 4.4 3.3 2.2
3 x 6 2.4 plf
4 x 4 3.2 plf
4 x 6 5.0 plf
4 x 8 6.8 plf
4 x 10 8.6 plf
4 x 12 10.4 plf


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