Originally Posted by datahoe
I'm new to DIY and looking for a little advice. I am placing a 175 gallon aquarium in my living room and need to reinforce the floor it will be. Below the living room is unfinished and I have access to the floor joists ( I joists that are 24 inch on center). The aquarium will have to go parallel with two joists along a load bearing wall. Others have recommended I sister the two I joists with 2x12 and I should be fine. Would screwing or nailing a 2x12 into the I joist compromise the joist? What would be the best and most cost effective way to reinforce the floor for an aquarium? The house was built in September 2012. Any advice or information would be greatly appreciated. I just don't want to do something that can affect my new home, in a negative way.
I have to question wether the proposed "sistering" method is legitimately proper for your case.
175 gallons equals 1457.75 lbs.
With my background in construction and structure engineering, I would recommend considering seriously building a weight bearing framed wall directly underneath the aquarium to permenantly transfer the weight from the floor joists to the concrete slab of your basement.
Otherwise, you will dent your floor joist system in that very spot, causing unwanted problems down the road.
Hope this helps.