Section Modulus of Throat Area in Butt Weld Joints

Weld design

Section modulus of throat area of butt weld W [mm 3 , in 3 ]

for full weld length

for load-bearing (active) weld length

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Meaning of used variables:

D

tube outer diameter [mm, in]

L

weld length [mm, in]

s

thickness of thinner joined part [mm, in]