good morning to all. I am a mechanical engineer and a newbie in piping design, pls help me because i need to make a fabricated tee, that means a welded tee made from straight pipes. You will make a hole in the run pipe to weld the branch pipe something like that.

The size of the reducing tee will be 48″x40″. I want to know is there any “computation” that i can use to check wether the reducing tee needs or doesnt need any reinforcement. If it can withstand the stress acting on the branch. The pressure will be 145 psi

Pls help me thank you very much.