Structural · S-ZMTFK

Braced Frame Collector Beam Connection at Column

Materials

weld

Elements

Beams Bracing Connections / Plates

Connections

Braced Frame Connection Welded Connection Bolted Connection

About this detail

A collector beam frames into a wide-flange column with a reinforced bottom flange connection. A one-half-inch plate matches the beam web thickness and provides web connection capacity, while bottom flange plates matching the beam flange thickness are added to each side and aligned with the opposing beam bottom flange. The bottom flange features a one-half-inch plate transition with a complete joint penetration weld ground smooth when no bottom flange is present. Ten bolts fasten the web connection, maintaining a one-and-one-half-inch minimum clearance from the complete joint penetration weld. A five-sixteenths fillet weld secures the underside reinforcement plate extending one foot six inches along the collector beam.

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