Two conditions exist for a roof drain pipe penetrating a concrete tilt-up wall. Condition A features the pipe exiting above the slab, requiring the pipe to be cut flush with the wall, sacked, patched, and caulked, with the interior painted to match the building. Condition B features the pipe exiting below the slab, requiring a minimum 6-inch clearance from the finish grade or surface and a minimum slope of 1/8 inch per foot. At truck yard locations, the pipe for condition B terminates at the face of the wall, and a splashblock or concrete hardscape is required at the overflow outlet as indicated on the site plan.
Members view this detail in full resolution, download the CAD files (SVG, PDF), and can adapt it in the built-in CAD editor — export DXF, DWG, or PDF.
Start membership