Ugh..... multiple lally columns, lift slowwwwwly, checking upstairs as you go. If you want to use fixed columns as permanent posts, be sure to leave enough room to get them in when positionig the adjustible columns. If the beam timber is questionable, put a second beam next to the old one to take the load. Doesn't need to be pretty... Just don't overdo any correction in the lift, as it will lead to more work. Best is if you can get away with just taking up the load and securing it without correcting.
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