IMPROPER BACKFILL OVER PIPES
A common problem problem and mistake - Not enough stone or no stone being used when backfilling around pipes.
Stone adds stability to the pipe perimeter and resists crushing. Many times drain pipes will slowly clog and completely shut when not backfilled or installed properly. This adds more overall cost to the job BUT it insures the pipe will continue to drain indefinitely rather than clogging in five years or less.
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