Structural · S-E457A

Moment Frame Beam to Column Weld Access Hole and Shear Plate Connection

Materials

Steel

Elements

Columns Beams Connections / Plates

Connections

Moment Connection Welded Connection

About this detail

A welded moment connection and shear plate configuration joins a steel frame beam to a moment frame column. The shear connection plate thickness, designated as tp, is sized as the larger of the beam web thickness or three-eighths of an inch minimum. A partial joint penetration weld secures the shear connection plate to the column face, while a complete joint penetration weld connects the beam web to the column with demand critical requirements. The weld access hole features a specific geometry with a twenty to forty degree slope, one-quarter to one-half inch typical vertical clearance, and one-half to one inch horizontal weld clearance. A two-inch minimum dimension spans from the column face to the access hole radius, and a one-inch minimum dimension applies at the lower flange interface. For additional weld access hole requirements, reference detail ten on sheet S334.

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