Thirty-six shear-tab beam connections each require four bolts. The bolt order carries an 8 percent spare allowance. What order quantity should be rounded up for the field?
Correct Answer
C) 156 bolts
Base bolts are 36 x 4 = 144. Adding 8 percent gives 144 x 1.08 = 155.52, rounded up to 156 bolts. Other choices omit the spare, round down, or use a larger arbitrary allowance.
Why This Is the Correct Answer
Base bolts are 36 x 4 = 144. Adding 8 percent gives 144 x 1.08 = 155.52, rounded up to 156 bolts. Other choices omit the spare, round down, or use a larger arbitrary allowance.
Why the Other Options Are Wrong
Option A: 144 bolts
bolt order, choice a: the answer choice lifts 144 bolts from the working line Base bolts are 36 x 4 = 144.
Option B: 150 bolts
bolt order, choice b: 150 bolts implies about 4.17 percent added to 144; the stated add-on is 8 percent in.
Option D: 160 bolts
bolt order, choice c: 160 bolts is wrong because 160 bolts implies about 11.11 percent added to 144; the stated add-on is 8 percent in.
Memory Technique
Remember bolt order as "base, adjustment, final unit"; the last unit should read 156 bolts.
Reference Hint
Open Principles and Practices of Commercial Construction, 11th Ed., 2024; use the index entry or section for "Steel connection bolt quantity takeoff" to confirm that Base bolts are 36 x 4 = 144.
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