I would like to remove two lally columns from my soon to be finished basement. The current columns are spaced five feet apart, and five feet from the exterior walls. They hold up three 2x10s which support the floor joists. However, the floor joist do not sit on the 2x10s, instead they butt up against them. I was wondering if anyone had any advice on how to remove the lally columns. I would like to remove an inch and a half from each floor joist, and slide a new 2x10 into place along side the current 2x10s. I would do this on both sides, therefore I would now have five 2x10s instead of three. The total span would be twelve feet. Would I be able to remove the lally columns?