Civil · C-VBGRK

Type 2 Catch Basin

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This drawing outlines the standard configuration and dimensional requirements for a Type 2 catch basin, incorporating structural design tables for basin dimensions and pipe allowances. The assembly consists of a precast or cast-in-place base, a riser section with internal steps or ladder rungs spaced twelve inches typically, a flat slab top, and adjustment sections supporting a catch basin frame and grate or manhole ring and cover. Tables specify wall thickness, base thickness, maximum knockout size, minimum distance between knockouts, and base reinforcing steel requirements for diameters ranging from forty-eight to ninety-six inches. Additional pipe allowances are detailed for concrete, metal, corrugated polyethylene storm sewer pipe, solid wall PVC, and profile wall PVC pipes. Notes clarify mortar placement, mortar fillets, gravel backfill for pipe zone bedding, and dimensions for maintenance clearances and height adjustments.

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