Beam-to-Column Moment Connection Weld Calculator

Size CJP and fillet welds for welded beam-to-column moment connections per AISC 358 and AWS D1.1 prequalified details

Input Parameters

Results

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Flange Force (Mf)
kips
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Flange Stress
ksi
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Web Fillet Weld Size
in
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Shear Tab Weld Length
in
Note: CJP groove welds at beam flanges develop full flange capacity. For seismic (SMF/IMF), use demand critical welds per AISC 341 with notch-tough filler metal (CVN requirements).

Reference

AISC 358 / AWS D1.1 Prequalified Connections Flange force: Ff = Mu / (d - tf) CJP groove welds at flanges (match base metal capacity) Web fillet welds: sized for shear Vu phi*Rn per inch = 0.75*0.6*70*0.707*w (E70XX) Shear tab length typically 0.6d to 0.7d