Structural · S-3MJEJ

Wide Flange Beam to Column Flange Moment Connection at Roof

Materials

Steel

Elements

Columns Beams Roofs Connections / Plates

Connections

Beam-to-Column Welded Connection Bolted Connection

About this detail

A wide flange beam connects to the flange of a wide flange column using complete joint penetration groove welds at both the top and bottom flanges, supplemented by stiffener plates on the column web. The stiffener plates match or exceed the thickness of the connecting beam flange, with a minimum thickness of one-half inch using ASTM A572 Grade 50 steel. A vertical shear plate welded to the column receives the beam web with four bolts spaced at three inches on center, positioned with one and three-quarter inch end distances. Additional fillet welds secure the shear plate along three sides typical. Specific shear plate thickness, bolt sizes, and remaining welding parameters are referenced to sheet S5.11.

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