Structural · S-9MRSQ

Typical Gravity Moment Connection Thru Column

Materials

Steel

Elements

Columns Beams Roofs Connections / Plates

Connections

Moment Connection Welded Connection Bolted Connection

About this detail

A structural steel beam frames continuously through a steel column with a moment connection at the top and bottom flanges. Complete-joint-penetration groove welds join the beam flanges directly to the column, complemented by standard weld access holes at the web. A shear plate welded to the column web connects to the steel beam web using three seven-eighths-inch diameter erection bolts, reduced to two bolts for W8 or W10 shapes. The shear plate thickness equals the beam web thickness plus one-eighth inch. Stiffener plates welded to the column have a thickness equal to the greater beam flange thickness plus one-eighth inch using 50 KSI steel, with five-sixteenth-inch fillet welds on three sides.

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