When I figure gable end framing at 16" on center i've always taken my total square footage and multiplied .75 to get Lineal footage at 16" o.c. I then add 10-15 percent as a waste factor. Just recently I read in a published estimating manual that 1 sq.ft. of gable area = 1.88 LF of material.

If this is the case then which example is right.

Mine:

28' gable with a 12/12 pitch= 196 sq.ft. (X) .75=147lf (1.10)waste=162LF

Theirs:

196 sq.ft. (X) 1.88 = 368LF. Even without a waste factor theirs is more than twice my amount. These calculations are based on half the width because only one gable is being figured.

Which way is right?

If this is the case then which example is right.

Mine:

28' gable with a 12/12 pitch= 196 sq.ft. (X) .75=147lf (1.10)waste=162LF

Theirs:

196 sq.ft. (X) 1.88 = 368LF. Even without a waste factor theirs is more than twice my amount. These calculations are based on half the width because only one gable is being figured.

Which way is right?

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