SC Water And Sewer Lines Practice Questions - South Carolina Water And Sewer Lines Contractor Examination Exam

Why does ACPA require a uniform, properly graded bedding under a precast box culvert before the box is set?

Because the box, once set, will not normally settle and cannot be forced down to grade Because boxes are flexible and will conform to high and low spots Because the bedding is only a temporary construction pad and will be removed Because invert grade is adjusted by jacking the box after backfill

Correct Answer:

Because the box, once set, will not normally settle and cannot be forced down to grade

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