I was hoping I could get some help here without going to a architect. I installed 2 micro lam beams that are 9"5inch wide, 2in thick, and 16ft long. The beams are holding 11 joists one side the joists go out 13ft on 1 side, and the other side goes11ft. This is holding up the second floor where there are 2 bathrooms. The Micro lam beam has bent a little so I wanted to re-support with a steel fitch beam. My question is which size steel fitch beam is best, 1/2in or 5/8th?