large tank on main floor ? anyone help

[brizzo]

Originally Posted by doch

This is a resting weight... no bounce or momentum involved. You'll likely still get some flex, but not the same as a person bouncing along the floor.

The terminology is live load vs dead load, if you weren't sure

But you are correct, the difference between load types is exponential.

[Coleus]

I have 155 main + 33 sum on my main floor. It is perpendicular to the joists and near the outside wall. I did not see any problems for couple months but then i got a contractor to do Joist Sistering to be safe. I probably going to build a support beam underneath once i figure out what i want to do with my basement. Be safe than sorry :-)