Plumbing · L-PC8JR

Insulated Buried Pipe Trench Section

Elements

Foundations / Footings Insulation Site / Paving Walls

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An underground pipe trench assembly is excavated in undisturbed earth with trench walls supporting an HDPE jacket enclosing multiple carrier pipes. A six-inch sand bed is provided at the bottom of the trench beneath the carrier pipes, with six inches of sand placed over the top of the jacket, and twenty-four inches minimum of select backfill up to grade. Piping and chemical feeder lines include supply and return connections with a shot feeder and fill cap routed to the nearest approved receptor. Pipe depths and excavation burial must be coordinated with building footings, civil, structural, and other building services prior to installation.

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