Quote:
Originally Posted by Myka
You're welcome. 
You have space between the joists and the dropped ceiling? I'm just wondering if you have space to hide the beam(s).
I don't think 2x4's are going to be enough, and I don't think you need to add another joist (that's a real pain in @$$ to do). You want to transfer some of the weight from the 2 loaded joists onto other joists (whether you are using jack posts or a beam or WHY). If you use hangers to mount a small steel beam(s) perpendicular to the joists and attach them to neighbouring joists you can transfer the weight by preventing flex. Need good hangers and good hanger nails. i bet you would only need 4" steel beams. |
Where would I get steel beams from? Home Depot? Rona? McDiarmid Lumber?
Quote:
Originally Posted by sphelps
If access isn't an issue you could just bulkhead in the two supporting joists by adding layers of plywood to each side of the two joists. Add 3-4 layers each side, glue and screw and stagger the seams to span the 15 foot length. Just make sure the ends are properly supported on the concrete wall.
With the floor properly supported, you could build a stand that distributes the weight properly and if you add a layer of high density foam between the floor and the stand you shouldn't break any tiles. Grout lines might crack but that's easy fix, plus given it's marble or stone you probably wouldn't notice anyway.
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Grout is epoxy so it stays flexible.
Not sure quite what you mean to do with the plywood.