What to look for in a house when planning a large tank

[michika]

My goal is to put it in the basement of a house, or a side by side townhouse condo. I never planned to do something like an apartment type condo, as I require a lawn for my dogs.

I figure I would need about three to four times the space that I needed for my 230g. Since my 230g didn't have a separate and dedicated fishroom that is something I want to include this time around.

Electrical is all covered, no worries there. Krazykuch is an electrician by trade, and so is my father. On the 230g we ran two separate dedicated GFCI circuts at 15 amps each. I will probably going that route again, although probably with 4-5 curcuits as needed.

How would I find out about the concrete slab? Other then knowing the date the house was built is there another way to find out its age, or if it has cured?