Try to hammer a nail through the carpet in the middle of the floor if it is
concrete which it probably is you will know quickly.
Muff

"orb" wrote in message
.. .
I'm looking at buying a condo built in 1972 and was curious about the
floor structure underneath the wall-to-wall carpet. I was hoping some
conclusions could be drawn about the floor structure from this info:

The brick building has two stories, 4 condos per story. The bottom condos
are on a concrete slab. The second floor is reached via a very solid steel
stairway onto a concrete landing. Once inside the condo, there is no
vibration on the floor at all, even when jumping up and down. The outdoor
deck off the living room is concrete.

Would it be reasonable to think that the second floor condos are on a
concete slab like the landing and deck? The carpet is relitively new and
I can't pull it back and, so far, have not found anyone yet who knows
what's underneath. I hope to speak to the owner this weekend to get more
facts but was hoping someone here could make an educated guess.