Do I need to reinforce the floor?

[sphelps]

Originally Posted by Gripenfelter

Where would I get steel beams from? Home Depot? Rona? McDiarmid Lumber?



Grout is epoxy so it stays flexible.

Not sure quite what you mean to do with the plywood.

You can get steel I-beams from Varsteel or some kind of steel supplier in the area.

This is what I mean by creating the plywood bulkhead

Start with joist


Add plywood layer to cover entire span


Repeat staggering seams


Repeat again staggering seams and do other side.


You're simply increasing the strength of the beams (joists). By adding 3-4 layers each side on both supporting joists your floor will be strong enough to support the load without deflection.