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.
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Weld Illustration |
Section Modulus of Throat Area of Butt Weld [mm3, in3] |
Full Weld Length |
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Weld Illustration |
Section Modulus of Throat Area of Butt Weld [mm3, in3] |
Active Load-bearing Length |
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| Where: | |
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W |
= Section modulus [mm3, in3] |
| s | = Plate or tube thickness [mm, in] |
| L | = Length of weld [mm, in] |
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= pi (3.14157) |
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