How heavy are these things?

[toxic111]

Originally Posted by RDNanoGuy

Interesting. I was told that by the builder that built my house. Just goes to show you I guess. Now I'm wondering about my 2500+ tank on the main floor of my house. Good thing I have it on an outside wail where the joists sit on the sill plate.

Shows that builders don't even know.

Depending on the footprint of your tank you are probably ok., like I said, most floors evened the standard. To give an example, the typical 'I' joist is 11 7/8" deep & can span around 18' feet at 19.2" spacing. Most homes are under that spacing or span. Also strapping or drywall will increase the load they can carry, same with the type of sheathing used. Many variables go into the load caring capacity.