Issue 1 V1.08
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Welded Connections > Force on PP Butt Weld (2 Plates)

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Partial Penetration Weld Stresses

Notation and Units

Metric and Imperial Units

The above welding stress equations may be used with both imperial and metric units. As with all mathematical calculations care must be taken to keep consistent units throughout. Examples of units which could be adopted have been provided below:


  • h1 = weld penetration, in or mm
  • h2 = weld penetration, in or mm
  • l = length of welds, in or mm
  • P = total axial force, kip or kN
  • σ = stress in weld, psi or MPa