Structural · S-C9DAF

Elevator Pit Foundation and Sump Detail

Materials

Concrete Steel Metal (misc.)

Elements

Columns Walls Roofs Floors / Slabs Anchors / Embeds Connections / Plates Reinforcing

Connections

Bolted Connection Rebar Splice / Development Embed Plate Expansion / Slip Connection

About this detail

This structural detail shows an elevator pit with an 8-inch concrete wall reinforced with number 4 bars at 12 inches on center each way, featuring 90-degree standard hooks at the bottom dowels to match wall reinforcing. A depressed sump pit sits in the floor slab, edged with a continuous galvanized 3-by-3-by-1/4-inch steel angle secured by 3/4-inch diameter expansion anchors embedded 6 inches at 12 inches on center, supporting a 1-inch steel grate. Water stops are included on each side of the pit walls, and blockouts for the elevator jack are provided as required by the manufacturer. The surrounding slab-on-grade features number 6 reinforcing bars at 8 inches on center each way on top and bottom with 2-inch clearances. Angle ledgers and expansion bolts are provided by the elevator manufacturer.

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