How can I define a branch SIF using B31.1 Fig D-1 sketch d)?
Autopipe currently does not calculate to Fig D-1 B31.1 but the SIF can manually be calculated then applied using insert/xtra data/user SIF on the branch side of the Tee only. The B31.1 branch effective section modulus is calculated by Autopipe = pi rm^2 te since rm is same as rb on Fig D-1 B31.1 (d) then suggest insert a small run with different pipe identifier having a thickness when used in the section modulus calculation will be equivalent to tb. Where te = smaller of tn or i.tb hence equivalent branch thk = actual tb/ SIF calculated from Fig D-1 B31.1 assuming i.tb is smaller than tn.
