Structural · S-ATD4J

SFRS Collector Flange Connection to Column Web

Materials

Steel

Elements

Columns Beams Connections / Plates

Connections

Moment Connection HSS Connection Welded Connection Bolted Connection

About this detail

A Special Seismic Force-Resisting System collector flange connection ties a beam to a column web. Top and bottom flange plates align with backspan plates using one-and-one-eighth-inch A490N SC-B bolts in standard holes with a maximum quarter-inch shim allowance. The assembly uses Grade 50 plate material with complete joint penetration welds at the flange plates connecting to the column web and five-sixteenths-inch fillet welds connecting to the column flange. A comprehensive schedule details beam sizes, flange plate thicknesses, and bolt configurations for various member profiles.

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