Dear Richard/Dave,

The main header size is 46" NB and branch line is 2" NB.

Query 1: Which connection is preferable weldolet connection or reinforced stub in for above mention header/ branch size as far as SIF is concern?

Query 2: How does Caesar calculate SIF value for Weldolet connection and Stub in RF type ? If it is appendix D , ASME B31.3 , as per which formula ?

Regards,
Maulik