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BAretired: noted. thank you.

StructEngBrah: the new columns are located in side partition walls. thank you for the attachment. I did analyze the existing beams and columns and they failed when I applied the new load. The new beams will help reduce the load of the existing.

dik: agree.

KootK: these joists are supported by the top chord and I'm trying to transfer the load to the beam below with out affecting the bottom chord.

retired13: Yes, I have a floor above. I did analyze the joist and with the existing span it will not hold the new live load.

Hi all, I'm working on steel structure building restoration and change of use, and facing the following situation: The existing open web steel joists (22H6) are not good to carry the new live load and I have to add steel beam in the middle to cut the span. please see sketch. My question...