Butt Weld Section Modulus Equation and Calculation
The following are equations to define the section modulus area of a butt weld that includes the full weld length as well as active loading bearing area.
Weld Illustration |
Section Modulus of Throat Area of Butt Weld [mm3, in3] |
Full Weld Length |
|
Weld Illustration |
Section Modulus of Throat Area of Butt Weld [mm3, in3] |
Active Load-bearing Length |
|
|
Where: | |
W |
= Section modulus [mm3, in3] |
s | = Plate or tube thickness [mm, in] |
L | = Length of weld [mm, in] |
= pi (3.14157) |