Structural · S-YTST8

Braced Frame Column Base Plate at Footing

Materials

Concrete Reinforced Concrete Steel Masonry / CMU

Elements

Columns Foundations / Footings Bracing Millwork / Casework Anchors / Embeds Connections / Plates Reinforcing

Connections

Braced Frame Connection Gusset Plate Base Plate / Anchorage Bracing Connection Welded Connection Bolted Connection

About this detail

A structural steel braced frame column base connection is anchored to a reinforced concrete footing. The braced frame column is welded to a steel base plate with a demand critical weld, featuring stiffener plates on each side and a gusset plate slotted through the column. Buckling-restrained braces connect to the gusset plates with erection angles and hardware supplied by the brace manufacturer. The assembly rests on a two-inch non-shrink grout layer over a thickened concrete footing. Anchor rods extend through the base plate and are secured with double heavy hex nuts and hardened washers, bearing on a half-inch Grade 36 anchor plate placed below the bottom reinforcing with three-inch diameter holes for concrete flow. A shear lug welded beneath the base plate ties into the footing, surrounded by modified vertical ties and horizontal reinforcement.

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