A piping runs horizontal direction and there is one branch to the vertical direction with a welded tee. One trunnion support has been provided on a tee below, and there is no space to move it. Trunnion is reinforced with pad and it is resting + hold down type.

In this case, do i have to input increased SIF or do some detail calculation required??

Please let me know how to deal with this kind of matter.

hi,

what is the size of pipe and wall thickness?
what is the size of Tee and what is the load acting on the TEE and Trunnion?
what is the temperature and pressure? its all matter.

if your load and size of tee is bigger, definitely you have to do seperate FEA analysis for finding what is the trunnion size to support tee,you have to check the tee and tunnion are able to withstand the loads etc.
finally you can find SIF in FEA and you can use same SIF values to the caesar analysis.

regards,
N.venkatachalam