Structural · S-G9RRY

Reduced Beam Section Steel Column Connection

Materials

Steel

Elements

Columns Beams Connections / Plates

Connections

Gusset Plate Bolted Connection

About this detail

These structural steel details illustrate moment connections between incoming beams and a column web for different dimensional thresholds. The left detail addresses conditions where the dimension X is greater than or equal to nine inches, featuring a five-eighths inch thick plate, a half-inch thick stiffener plate, and two one-inch diameter A490-PT bolts with standard holes in the beam gusset plate and stiffener plate. Vertical slotted holes may be used in the stiffener plate at the contractor's option. The right detail covers conditions where dimension X is less than nine inches, utilizing two columns of the maximum number of one-inch diameter A490-PT bolts in the beam gusset plate and beam web. Both configurations incorporate column continuity plates, three-eighths inch fillet welds on three sides, and beam flange copes as required.

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