Structural · S-Y9KTT

Typical Two Story Basement Wall Detail

Materials

Elements

Columns Walls Floors / Slabs Foundations / Footings Waterproofing / Flashing Anchors / Embeds Connections / Plates Reinforcing

Connections

Rebar Splice / Development

About this detail

A reinforced concrete basement wall extends from a mat foundation up to the ground floor level, featuring an intermediate basement slab-on-grade connection. The wall is reinforced with number five horizontal bars at twelve inches on center on each face, number five exterior vertical bars, and number five interior vertical bars at the wall midspan switching to number seven vertical bars near the base. A two-inch deep by three-inch wide by six-inch long shear key is provided at eighteen inches on center along the wall-to-mat foundation connection, along with matching vertical dowels and two number four bent bars with forty-five degree bends at twelve inches on center. The intermediate slab-on-grade ties into the wall with class B lap splices and specified development lengths. General notes specify class B splices typically, soil report recommendations for backdrains and backfill, and concrete strength integration rules between columns and floor slabs.

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