A utility trench is 240 ft long, 3 ft wide, and 5 ft deep. What is the excavation volume in cubic yards?
Correct Answer
D) 133.3 cu yd
Volume is 240 x 3 x 5 = 3,600 cu ft; 3,600 / 27 = 133.3 cu yd.
Why This Is the Correct Answer
Volume is 240 x 3 x 5 = 3,600 cu ft; 3,600 / 27 = 133.3 cu yd.
Why the Other Options Are Wrong
Option A: 44.4 cu yd
trench excavation volume, choice a: 44.4 cu yd is wrong because 44.4 cu yd reflects a different quantity stage than the final takeoff.
Option B: 1,200 cu yd
trench excavation volume, choice c: 1,200 cu yd reflects a different quantity stage than the final takeoff.
Option C: 360 cu yd
trench excavation volume, choice d: 360 cu yd is wrong because 360 cu yd reflects a different quantity stage than the final takeoff.
Memory Technique
Remember trench excavation volume as "base, adjustment, final unit"; the last unit should read 133.3 cu yd.
Reference Hint
Open Pipe and Excavation Contracting, 2011; use by topic index - earthwork volume / swell / shrink to confirm that Volume is 240 x 3 x 5 = 3,600 cu ft; 3,600 / 27 = 133.3 cu yd.
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