Sixteen concrete columns are 18 in by 18 in and 12 ft high. Including 4% waste, how many cubic yards should be carried?
Correct Answer
B) 16.6 cy
Compute volume per column, multiply by count, convert to cubic yards, and add waste.
Why This Is the Correct Answer
Compute volume per column, multiply by count, convert to cubic yards, and add waste.
Why the Other Options Are Wrong
Option A: 16.0 cy
16.0 cy is below the supported result for column concrete; it likely omits allowance, conversion, coverage, or final round-up.
Option C: 17.3 cy
17.3 cy is above the supported result for column concrete; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Option D: 19.2 cy
19.2 cy is above the supported result for column concrete; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Memory Technique
Checks Small takeoff: count the condition before counting the package.
Reference Hint
Open-book path: tab Principles and Practices of Commercial Construction, 11th Edition, 2024 to Estimating and quantity takeoff; column concrete; verify quantity math, FL permit status, notice step, or field-control timing.
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