For the preconstruction estimate lock at the college lab corridor, the #5 footing bars takeoff has 159 bars at 34 ft each. Using 1.043 lb per ft for continuous bar stock, what reinforcing weight is estimated?
Correct Answer
B) 5,638 lb
Reinforcing weight equals bar count times length times pounds per foot.
Why This Is the Correct Answer
Reinforcing weight equals bar count times length times pounds per foot.
Why the Other Options Are Wrong
Option A: 5,406 lb
5,406 lb is below the supported result for #5 footing bars; it likely omits allowance, conversion, coverage, or final round-up.
Option C: 166 lb
166 lb is below the supported result for #5 footing bars; it likely omits allowance, conversion, coverage, or final round-up.
Option D: 6,315 lb
6,315 lb is above the supported result for #5 footing bars; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Memory Technique
Concrete Estimator takeoff: count the condition before counting the package.
Reference Hint
Open-book path: tab Principles and Practices of Commercial Construction, 10th Edition to Reinforcing steel; footing bar weight; verify the construction method, material quantity, equipment use, unit conversion, or field-control calculation.
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