Basement reinfocement

[Coleus]

Originally Posted by Myka

Is there tile directly under the tank?

Yes. the tank will sit on tiles

Originally Posted by sphelps

Best option I think would be to add a beam from green post to green post if possible, however there must be support there already even if it's down the line further. So it's possible you're over thinking this, if your sub-floor is decent which it would be if it tile or hardwood then 135 gallons would probably be fine without concern. Perhaps relocating the sump would be a good idea to reduce the load but I really don't see a huge threat.

Please see my new sketch because my memory served me wrong. The beam actually runs from one green post to another green post and it stops at the left green post.

The space that is underneath the tank is reserved for another big fowlr tank that I plan for future, so the sump will eventually move down to basement. Therefore i don't want any post underneath the tank

Originally Posted by gregzz4

What is the distance from the Foundation wall to LVL ?

My new calculation is from wall to LVL is 17.3 feet. the tank will be 1.8 feet from the wall. And it will be 10 feet long so about 5.5 feet from the LVL

Originally Posted by gregzz4

One thing I see that would make me uncomfortable is it looks like you are asking the plywood sheeting to take the whole load.
If this is true, and the tank is not sitting directly on the joists, I'd recommend you sister those joists far enough under the tank so the plywood doesn't deflect and fail. Plus that would take out your tiles
There is a formula for sistering, but I can't find it on the web right now.

Hmm sistering joints which means i have to move current plumping and heat ducts that are currently between those joints.



Here is my latest sketch

[Myka]

Originally Posted by Coleus

Yes. the tank will sit on tiles

Ohhh...I think you're going to be in trouble without reinforcing the plywood since the tank is sitting in between the joists. Just a slight movement will pop those tiles off. Another option is to pull up the tiles that will be under the tank and install them with flexible thinset and sanded silicone grout.

[reefwars]

Originally Posted by Myka

Ohhh...I think you're going to be in trouble without reinforcing the plywood since the tank is sitting in between the joists. Just a slight movement will pop those tiles off. Another option is to pull up the tiles that will be under the tank and install them with flexible thinset and sanded silicone grout.

yeah id have to agree if you were hitting the joists with your tank you would be in a better position(depending on the type of tile/stone and if it was set right)

personally i would remove the tiles all together where the tank sits and double up the plywood with 1/4" ply to fill the void or do as doug said and build the stand so its a little bigger than the tank and sits on the joist


edit****

[Coleus]

Originally Posted by Myka

Another option is to pull up the tiles that will be under the tank and install them with flexible thinset and sanded silicone grout.

Originally Posted by reefwars

personally i would remove the tiles all together where the tank sits and double up the plywood with 1/4" ply to fill the void

I probably will do this. Thanks

Originally Posted by hillegom

What about putting two beams, either side of the tank from the foundation wall to the two green verticals.

I think i probably has to go this way instead of doing two more post. But then not sure how i am going to move the drain pipe that is currently sitting between 2 joints.




Thanks for everyone inputs so far, I learned lots of new stuff today

[Myka]

Originally Posted by Coleus

But then not sure how i am going to move the drain pipe that is currently sitting between 2 joints.

Could you draw the drain in there? Does it just run down between the two joists the tank is over top? Drains are pretty easy to move. Adding a handful of 2x4" supports perpendicular to the joists would be enough to let you sleep at night. Screw them to the floor and then screw through the joists into the supports. Like a ladder between the joists...know what I mean? I hope you do because I can't draw worth a crap in those drawing programs!

[reefwars]

Originally Posted by Myka

I hope you do because I can't draw worth a crap in those drawing programs!

me either i see all these fancy google sketches...tried it and failed miserably lol id do better with the old paint thingy in accessories lol

[The Grizz]

Add a second diagonal beam to create an 'X'. One will be solid & the other would be 2 pieces, use 4 pieces of 4" x 4" x 3/8" angel iron with 2 - 3/4" bolts in each beam ( one above the other ) to connect it all together.

[sphelps]

I think you'll be perfectly fine, I've setup a few tanks on tile before in similar situations and never had an issue. As long as the tile was installed correctly and it's not a delicate natural stone you shouldn't have any issues. With tile your subfloor has to be at least 1.25" thick so it's strong enough to resist any deflection from that kind of load. If the tank is about 16 square feet that's only around 60lbs per sq foot, just be sure the stand distributes the load evenly (foam would be a good idea).

If you're that worried about it bridge some small beams perpendicular between the two joists where the fish tank will sit and attach them to both joists and the subfloor. Putting in that yellow section won't help you though, the joists are plenty strong as is and your only concern would be the small sag from the tank sitting between them but like I said with that subfloor it's a non issue.

[reefwars]

another option would be to build a raised platform that your tank sits on, say 2-3' in width beef it up so the joist runperpendicular to the joists in your floor, then youl span both joists with lots of support so no sagging.you can even then tile it or match it to what you plan to do with your stand .you wouldnt have to do anything like moving plumbing or ducts and you can still have a normal sized stand