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

Why should flexible PVC gravity sewer be carefully bedded and compacted in the haunch zone?

PVC gains strength only when the haunches are left empty Poor haunch support allows excessive deflection under earth and live loads Haunch compaction is only required on force mains Haunch material is used solely to color-code the trench

Correct Answer:

Poor haunch support allows excessive deflection under earth and live loads

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