Structural · S-7TYJG

Special Moment Frame Weld Access Hole Geometry and Details

Materials

Connections

Shear Tab / Single Plate Welded Connection

About this detail

Geometric requirements for a weld access hole in a special moment frame beam-to-column connection. The beam flange features a specific bevel and a radiused access hole sized proportionally to the beam flange thickness, with dimensions governed by notes for tolerances and clearance. A dashed shear tab aligns with the beam web, maintaining a specified offset from the edge of the beam web. The adjacent detail presents the complete welded joint assembly with a backing bar and a five-sixteenths inch fillet weld executed per special moment frame welding notes. The flange-to-column connection includes specified bevels and transitions to ensure proper stress distribution during seismic loading.

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