Structural · S-Y96R9

Interior Column Spread Footing and Base Plate Detail

Materials

Concrete Steel Masonry / CMU

Elements

Columns Floors / Slabs Foundations / Footings Waterproofing / Flashing Anchors / Embeds Reinforcing

Connections

Base Plate / Anchorage Bolted Connection Rebar Splice / Development

About this detail

A typical interior spread footing supports a structural steel column. The column base plate is anchored to the concrete footing with anchor bolts, set over a layer of non-shrink grout. Footing dimensions, depth, and top and bottom reinforcement are sized per the footing schedule, featuring three inches of clear cover and one hundred eighty-degree hooks at the bottom mat steel for frame footings. Number four dowels are placed at eighteen inches on center typically around the column on all four sides. The surrounding ground floor slab-on-grade bears above with an underlayment, allowing for a slab block-out option around the column for erection.

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