Hi

I am working as a stress engineer in one of the leading EPC companies. I just found out that in couple of load cases 3D Max intensity is greater than the allowable stress. Still the model is passed. If 3D max intensity is not a code stress then why CAESAR II is calculating the value? B31 codes, as far as I know is based on 2D stresses. But is there any importance of calculating 3D stresses?

anyone having idea about 3-D max intensity ??

Different piping codes have their own methods of evaluating pipe stress. CAESAR II applied those rules.
But in addition, CAESAR II calculates a general, "text book" stress. That general stress has no defined limit in the Codes. Your 3-D mas stress intensity is this general stress. Use it as you wish.

thnx Dave for your much valuable reply.....