A single-wythe modular brick screen wall has 300 sf of net face area. Using 6.75 modular brick per square foot and adding 5 percent for cuts and breakage, what brick quantity is closest?
Correct Answer
D) 2,126 brick
Base quantity is 300 x 6.75 = 2,025 brick. Add 5 percent: 2,025 x 1.05 = 2,126.25, so 2,126 brick is closest. Other choices: 1,950 is too low, 2,025 omits the allowance, and 2,250 uses an excessive allowance.
Why This Is the Correct Answer
Base quantity is 300 x 6.75 = 2,025 brick. Add 5 percent: 2,025 x 1.05 = 2,126.25, so 2,126 brick is closest.
Why the Other Options Are Wrong
Option A: 1,950 brick
brick quantity, choice a: 1,950 brick backs into 39,000 when divided by 5 percent; the accepted setup gives 42,520 on that same base.
Option B: 2,025 brick
brick quantity, choice b: 2,025 brick stops after base quantity is 300 x 6.75 = 2025 brick and omits the final step to 2,126 brick.
Option C: 2,250 brick
brick quantity, choice d: 2,250 brick backs into 45,000 when divided by 5 percent; the accepted setup gives 42,520 on that same base.
Memory Technique
Say the brick quantity rule aloud as a chain; the chain ends at 2,126 brick, not an intermediate stop.
Reference Hint
Open Modern Masonry - Brick, Block, Stone, 9th Ed., 2020; use the index entry or section for "Modular brick quantity estimating" to confirm that Base quantity is 300 x 6.75 = 2,025 brick.
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