Weld Stress Calculations

The following notes are general guidance notes for the calculation of the strength of welds

Variables

1. Strength of deposited weld material
2. Type of joint and weld..important
3. Size of weld ..important
4. Location of weld in relation to parts joined..important
5. Types of stress to which the weld is subjected
6. Conditions under which weld is carried out
7. Type of equipment used for welding
8. Skill of welder

A generous factor of safety should be used (3-5)

Use the minimum amount of filler material consistent with the job requirement

Try to design joint such that load path is not not through the weld