AL Sewer Projects Practice Questions - Alabama Sewer Projects Contractor Examination Exam

Why should pipe trenches be excavated only slightly wider than needed for bedding, pipe, and worker access?

Wider trenches always reduce cave-in risk to zero Excess width increases excavation, bedding, backfill, restoration costs, and open-hole exposure Narrower is never allowed by any specification Width has no effect on quantities or safety planning

Correct Answer:

Excess width increases excavation, bedding, backfill, restoration costs, and open-hole exposure

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