Richard Ay wrote on another forum

"B31.1 contains an alternate equation for the computation of the branch SIF, assuming the input meets several criteria. I suspect that this input met the criteria and the alternate computation was performed."

and

"Then go to "tools\configure-setup", click on the SIFs and Stresses tab, then click on the option for Reduced Intersection and set this option to Pre 1980."

Could someone please quote the exact section in B31.1 2010 this is located. I am aware of Appendix D and 104.8 but don't see the alternate equation.
Thanks,
Chris