[glowrock]

Originally Posted by mhays

Dunno about Pittsburgh, and construction costs and soil conditions are pretty local, but as a Seattle (sort of) construction guy I'd guess $200,000,000.

I haven't read the next few pages yet, so forgive any duplication. But there are several ways of creating a dry site during construction, and keeping the water out after. Parking garages deep under heavy groundwater are nothing new. It's a cost issue. As for keeping the water out during floods, the building perimeter plus an emergency watertight door system should be plenty. Alternatively, a small berm around the entire garage, with a ramp or two over it, would be a cheap option, though probably less secure.

So I was only off by a factor of two, then! Seriously though, thanks for the info, mhays. Much appreciated!

Aaron (Glowrock)