A four-inch solid schedule 40 polyvinyl chloride collector pipe routes through the concrete mat foundation at a minimum of three inches above the bottom of the foundation slab. A full-face composite drain board applies against the exterior waterproofing membrane and soldier pile shoring wall, tying into a wall drainage connector. The four-inch solid schedule polyvinyl chloride pipe conforming to American Society for Testing and Materials D 2665 or 1785 sloped to drain directs water to a sump pump at a half-percent minimum slope, requiring alignment and invert coordination between the plumber and structural engineer. The bottom of the mat foundation and wall, slab, and mat foundation configurations are coordinated with structural plans.
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