This trench detail establishes the underground burial requirements for landscape irrigation and utility lines relative to the finish grade. The assembly requires a minimum of eight inches of rock-free soil surrounding all sides of the piping typical. Lateral piping sits at a depth of twelve inches below finish grade. A live service main and accompanying valve wire conduit are positioned at a depth of twenty-four inches below finish grade.
E 8" MIN. ROCK FREE SOIL ON ALL SIDES TYPICAL LIVE SERVICE MAIN VALVE WIRE CONDUIT LATERAL PIPING FINISH GRADE 24" 12"
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