An eighteen-inch high-density polyethylene access pipe connects a subsurface stormwater chamber system to a two-foot sump manhole. The MC-3500 stormwater chambers bear directly on foundation stone with an AASHTO M288 Class 1 woven geotextile placed between the stone and the chambers. An MC-3500 endcap seals the far end of the chamber row.
2-foot SUMP MANHOLE 18" HDPE ACCESS PIPE REQUIRED. AASHTO M288 CLASS 1 WOVEN GEOTEXTILE BETWEEN FOUNDATION STONE AND CHAMBERS. MC-3500 ENDCAP C
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