Sorry, I have been out of town and not checked the forums except to make a post since I've been back. I'm 98% certain that your house is on a slab and you should have no problems with your tank.
Cute dog in the pics, BTW. I am glad to know you're safe to set up your tank! Sorry if I made you worry, but if you weren't on a slab and set the tank in the wrong place/orientation it could have caused a LOT of heartache and damage!
Have you started cycling your tank yet? Looking forward to seeing it.
I SO MISS the architecture of homes out West...
Being in LV, NV you will probably have a lot of evaporation from your tank, so make sure you find an Auto Top-Off system or just keep an eye on your water level. As water evaporates, the salt stays in the tank, so as water evaporates, your salinity will increase. Top it off with RODI Water, not Salt-Water!
My tank FINALLY finished it's cycle and I am going to be adding my first fish & CUC tonight or in the morning. Planning on heading out o the LFS in 2 hours or so. They get their new stock in on Tuesdays...