Structural · S-XZMR3

Slab-On-Grade Isolation Joint at Column

Materials

Concrete Steel Masonry / CMU

Elements

Columns Floors / Slabs Foundations / Footings Anchors / Embeds Connections / Plates

Connections

Base Plate / Anchorage HSS Connection Bolted Connection

About this detail

A structural steel column is supported by a concrete spread footing with an isolation joint separating the surrounding slab-on-grade. The wide-flange, hollow structural section, or round column rests on a base plate with anchor bolts embedded in the footing, finished with non-shrink grout beneath the plate. The spread footing features top and bottom reinforcement with specified clearances of three inches against undisturbed soil and two inches elsewhere. An isolation joint surrounds the column base to separate the slab-on-grade from the footing. A slip sheet may be provided under the slab on grade where it bears on the footing to limit cracking at the contractor's option.

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