A low-slope roof takeoff measures 18,400 sf of membrane field area. The estimator adds 7 percent for laps, perimeter waste, and detailing. What order area should be carried?
Correct Answer
C) 19,688 sf
Adjusted order area is 18,400 x 1.07 = 19,688 sf. Other choices add only 7 sf, subtract the allowance, or use a 10 percent allowance instead of the stated 7 percent.
Why This Is the Correct Answer
Adjusted order area is 18,400 x 1.07 = 19,688 sf. Other choices add only 7 sf, subtract the allowance, or use a 10 percent allowance instead of the stated 7 percent.
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