Regarding SIF few queries -
1) ASME 31.3 uses directly all the formulas given by Markyl after his fatique test evaluation ,where he neglected below things-
A) impact of torsional stress is neglected while calculating in plane and out plane SIF.- if header is of higher size as compared to branch WRC330 SAYS IT MAY CAUSE PROBLEM.
B) impact of reduced intersection is not considered,Markyl uses same SIF for branch and header irrespective of size but same thing we don’t use in caesar .
Caesar automatically calculates SIF for brance and header ,my question is why it is so ?
If 31.3 says to use same SIF on branch and header why Caesar uses reduced intersection effect ?

bINU