Calculations for reinforcement of welded branch for ASME B31.3 are performed using the rules defined in section 304.3.3 of the code. The rules involve calculating the area removed from the header due to perforation in the branch and determining the replacement area available in the run pipe, branch pipe and the reinforcement pad including the welds.

The online calculator below provides convenient tool for quickly determining the adequacy of reinforcement in welded branch connections.

Branch Reinforcement

Use Custom Stress (ksi)