Structural · S-7N9B5

Beam to Column Web Moment Connection

Materials

Steel

Elements

Columns Beams Connections / Plates

Connections

Moment Connection Welded Connection Bolted Connection

About this detail

This structural steel connection details a beam framing into a column web with top and bottom stiffener plates whose thickness matches the beam flange plus one-quarter inch. Complete-joint-penetration welds tie the top and bottom flanges to the column web, while typical fillet welds secure the stiffener plates. Bolt size, type, quantity, and vertical plate thickness are determined per the engineering tables referenced in the notes. At the top of the column, a one-quarter-inch partial-joint-penetration weld is provided in lieu of a top-side fillet weld, or a single cap plate with five-sixteenths-inch one-sided fillet welds may be used instead of two stiffener plates at the contractor's option. This detail applies exclusively to beams of equal depth on each side of the column web.

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