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

What is a common cause of "bellies" or sags in newly installed gravity sewer?

Uniform bedding and continuous grade control Soft spots, over-excavation, or poor compaction under the pipe that allow settlement after installation Using gasketed joints as specified Proper mandrel testing after backfill

Correct Answer:

Soft spots, over-excavation, or poor compaction under the pipe that allow settlement after installation

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