The strip footing takeoff shows a rectangular footing 80 feet long, 20 inches wide, and 12 inches deep. How many cubic yards of concrete are required?
Correct Answer
B) 4.94 cubic yards.
The footing is 80 x 1.667 x 1 = about 133.36 cubic feet. Dividing by 27 gives 4.94 cubic yards.
Why This Is the Correct Answer
The footing is 80 x 1.667 x 1 = about 133.36 cubic feet. Dividing by 27 gives 4.94 cubic yards.
Why the Other Options Are Wrong
Option A: 4.44 cubic yards.
4.44 cubic yards. is below the supported result for foundation takeoff; it likely omits allowance, conversion, coverage, or final round-up.
Option C: 5.56 cubic yards.
5.56 cubic yards. is above the supported result for foundation takeoff; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Option D: 6.17 cubic yards.
6.17 cubic yards. is above the supported result for foundation takeoff; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Memory Technique
Estimating Footing takeoff: count the condition before counting the package.
Reference Hint
Study anchor (closed-book): memorize Foundation takeoff from California Building Code, California Code of Regulations Title 24. / Title 24 California Building Code foundation concrete quantity concepts; know the rule or calculation trigger without relying on exam-room lookup.
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