Polar Moment of Inertia for Fillet Weld Joints

Weld design

Polar moment of inertia of fillet weld J [mm 4 , in 4 ]

Position of center of gravity of weld group section

J = 2 π a (r + a / 2) 3

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Weld design

Polar moment of inertia of fillet weld J [mm 4 , in 4 ]

Meaning of used variables:

a

fillet weld height [mm, in]

B

width of weld group [mm, in]

H

height of weld group [mm, in]

L

weld length [mm, in]

r

weld radius [mm, in]

s

web thickness [mm, in]

t

flange thickness [mm, in]