My firm is designing the renovation of an existing 2-story warehouse into an apartment building, including the addition of a new third floor. Construction Type is II-B.
We don't want the plumbing from the new third floor residential units to penetrate through the existing roof slab (which will become the floor of the third level) so I've been asked to add what is essentially a furred floor on top of the concrete slab, to run the plumbing through and then bring the lines down in a couple areas near columns.
My questions is: what type of furred floor construction is best here? Can you use wood 2x- floor joists? Does the code speak to this anywhere?
We don't want the plumbing from the new third floor residential units to penetrate through the existing roof slab (which will become the floor of the third level) so I've been asked to add what is essentially a furred floor on top of the concrete slab, to run the plumbing through and then bring the lines down in a couple areas near columns.
My questions is: what type of furred floor construction is best here? Can you use wood 2x- floor joists? Does the code speak to this anywhere?