SEWAGE DEPARTMENT TRAINING PROGRAM
How to Build an At-Grade Sewage Disposal System
After the laterals are in place, add additional aggregate until it is level across the bed to a minimum of 2 inches over the piping. Grade the perimeter of the aggregate to a 2 to 1 slope. Back Next
After the laterals are in place, add additional aggregate until it is level across the bed to a minimum of 2 inches over the piping. Grade the perimeter of the aggregate to a 2 to 1 slope.
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