This structural detail defines the geometry and dimensional requirements for weld access holes in structural steel beam webs. The configuration includes a bevel for a full-penetration groove weld along the flange interface, a specified minimum radius at the root of the cutout, and precise longitudinal length limits tied to the flange thickness Tbf. Dimensions dictate clearance and transition limits to prevent stress concentrations during heavy moment connections.
Tbf 3/4" MIN . 5 4 2 . 3 . 1 1 BEVEL FOR GROOVE WELD 2 LARGER OF Tbf OR 1/2" (+Tbf/2 OR -Tbf/4) 3 3/4 Tbf TO Tbf, 3/4" MIN (+/- 1/4") 4 3/8" MIN RADIUS 5 3Tbf (+/- 1/2") WELD ACCESS HOLE DETAIL
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