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

On buried ductile iron plant yard piping, where is a concrete thrust block typically required?

At every 20-foot pipe joint on a straight run At unrestrained fittings that change direction or stop flow, such as bends, tees, and dead ends Only under valve boxes to support traffic loads Only on gravity sewer laterals inside the plant fence

Correct Answer:

At unrestrained fittings that change direction or stop flow, such as bends, tees, and dead ends

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