For the owner coordination call, bank excavation is 1215 cy and soil swells 20 percent for hauling. What loose volume is hauled?
Correct Answer
B) 1,458 cy
The calculation gives 1,458 cy for the stated swell volume. Other choices: the distractors come from omitting an adjustment, using the wrong rate, or applying a rounded shortcut for calculation item 221.
Why This Is the Correct Answer
The calculation gives 1,458 cy for the stated swell volume.
Why the Other Options Are Wrong
Option A: Limit swell volume to 1458 cy
swell volume, choice a: 1458 cy repeats the numeric result but changes the required label or rounding; 1,215 x 1.2 = 1,458. so the keyed form is 1,458 cy.
Option C: Make 1,312 the answer for swell volume
swell volume, choice b: 1,312 implies about 7.98 percent swell on 1215; the accepted swell calculation is 1,215 x 1.2 = 1,458.
Option D: Limit swell volume to 1,603
swell volume, choice d: 1,603 is wrong because 1,603 implies about 31.93 percent swell on 1215; the accepted swell calculation is 1,215 x 1.2 = 1,458.
Memory Technique
Remember swell volume as "base, adjustment, final unit"; the last unit should read 1,458 cy.
Reference Hint
Open Pipe and Excavation Contracting, 2011; use the index entry or section for "swell volume calculation" to confirm that The calculation gives 1,458 cy for the stated swell volume.
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