Structural · S-GQJ3D

Typical Concrete Sump Pit and Slab to Wall Intersections

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A two-foot by two-foot sump pit sinks below the slab on grade, framed with W-19-14 galvanized steel grating resting on an L 1-1/2 by 1-1/2 by 3/16 angle embedded with two half-inch diameter by three-inch studs on all four sides. Four number four reinforcing bars run each way within the pit structure, with eight-inch typical dimensions. Slab-to-wall intersections feature continuous three-quarter-inch keys, slab top and bottom reinforcing bars such as number five bars at sixteen inches on center, and wall tension bars matching vertical wall reinforcing unless noted otherwise. Shoring must be maintained under both the slab and wall until both have reached their twenty-eight-day design strength.

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