A Type C catch basin includes a hood, plan view, and sections A-A and B-A detailing the concrete construction. The catch basin features Class A concrete or precast concrete units with number four reinforcing bars and drainage openings in four walls immediately above the pervious backfill. Section A-A indicates a variable height, four-foot minimum sump, and a variable diameter pipe opening. Section B-B shows the interior hood or elbow configuration and wall thickness of twelve inches at depths greater than ten.
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