Hi,

This is with reference to B31.8-2008 para 833.3

For restrained section of pipeline the axial stress calculated by Caesar is not matching with the figure obtained by code equation 833.3a. For example in the attached model at node 25 the axial stress is given as 18337 PSI for load case #1. As per code this value should come out to be E*ALPHA*(T1-T2) + Nu*SH =29500000*0.000006548*(70-185) + 0.3*33033=12304PSI Sx=Sb=0)
As I guess the axial stress reported in the stress report is Rx/Am+nu*SH (Rx: Axial force given in global force report Am: Pipe wall cross sectional area), it seems to me that the axial force reported in global force report is higher that it should be.
Appreciate any clarification.

Thanks,

Tanveer Mukhtar