A sealant subcontractor prices 1,260 lf of control joints. The bid includes 8 percent extra for mockups, corners, and waste. What linear footage should be carried?
Correct Answer
D) 1,361 lf
Adjusted footage is 1,260 x 1.08 = 1,360.8 lf, rounded to 1,361 lf. Other choices omit waste, use about 4 percent, or add too much material.
Why This Is the Correct Answer
Adjusted footage is 1,260 x 1.08 = 1,360.8 lf, rounded to 1,361 lf. Other choices omit waste, use about 4 percent, or add too much material.
Why the Other Options Are Wrong
Option A: 1,260 lf
sealant joint material, choice a: 1,260 lf is produced by 1,260. The error is using that partial/alternate setup.
Option B: 1,310 lf
sealant joint material, choice b: 1,310 lf backs into 1,212.96 when divided by 1.08; the accepted setup gives 1,260.19 on that same base.
Option C: 1,512 lf
sealant joint material, choice d: 1,512 lf backs into 1,400 when divided by 1.08; the accepted setup gives 1,260.19 on that same base.
Memory Technique
Say the sealant joint material rule aloud as a chain; the chain ends at 1,361 lf, not an intermediate stop.
Reference Hint
Open Principles and Practices of Commercial Construction, 11th Ed., 2024; use the index entry or section for "Sealant joint quantity allowance" to confirm that Adjusted footage is 1,260 x 1.08 = 1,360.8 lf, rounded to 1,361 lf.
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