I believe using BS 7159 in CAESAR II will associate the Welding Tee with the BS 7159 Moulded Tee and the Reinforced Fabricated Tee with the BS 7159 Fabricated Tee.
You can review the SIF calculations outside of your CAESAR II model. Click on the Analysis tab of the Main Menu Ribbon. There, click on SIFs @ Intersections.
_________________________
Dave Diehl