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Fillet Weld Polar Moment of Inertia Equations and Calculation

Weld Design Menu

The following are equations to obtain the Polar Moment of Inertia for "J" welds.

Weld

Polar Moment of Inertia

Fillet "J" Weld [mm4, in4]

Location Center of Gravity

-
-
-
 
Where:

J

Polar Moment of inertia [mm4, in4]

= Center of Gravity Location [mm, in]

= Center of Gravity Location [mm, in]

A

= Height fillet weld [mm, in]

B

= Width of weld [mm, in]
s = Web thickness [mm, in]
L = Length of weld [mm, in] 
r = Weld radius [mm, in]
t = Flange thickness [mm, in]
H = Height of fillet weld group [mm, in]

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