I forgot to respond to the rest of this.A floor can be braced with a 4x4 and a metal post jack. A single one will take the load and the 4X4 should span all the floor joists under the tank. The post has a threaded section to adjust it's height exactly.
Not hard in a basement with a concrete floor. If a dirt floor you may have to use a concrete pad they make for deck posts or even dig a 2 foot square hole and fill with concrete to make a footer to take the load.
Go Blue!I'm in Ann Arbor!
Unless those utility items are attached directly to the bottom of the joists and/or completely covering them, there should room to get a floor jack pad onto the bottom of the joist. Provided the space below that is open and clear all the way to the floor, the use of such a floor jack should be a reasonable option. Any house floor jack like these should work: http://bit.ly/3KF03lb... but I think the tank will sit entirely on 1 joist, or at most 2. there's some electrical, plumbing, and HVAC in that area in between joists/foundation wall that might make it a little more difficult to add the structural supports
hm do you think dirt can get under the mat even with all that load compressing the mat? can fine dust still get under?Putting a mat down to protect the floor is both good and bad. If dirt gets under the edges it will scratch the floor and ruin the finish.
I would suggest putting down a piece of water proof carpet matting and taping the edges down (all the way around to keep dirt out) then put something over it like a cheap area rug of almost the same size.
Yes Marineland stands seem wimpy but if in good condition it will hold the tank fine. My 75 came with a stand and it is the same way. I have used it more than 7 years.
Put the shims directly under the stand.
Ah I see. makes sense.People walking in the room will cause enough vibrations in the floor for it to happen.
actually that exterior door might become useful in the future for water changes. I could easily run a hose through that door.Attaching a few photos here.
Photo 1 (Living Room):
This shows where the stand and tank frame are currently positioned. The room is messy because I’m still moving things around. I don't use that exterior door btw -- people often confuse it for my main door.
A concern I have here is the proximity of the tank to the supply vent on the left. Right now the tank is against that exterior wall with the door and overlaps the vent’s airflow path by about 6". If I move the tank outward from the wall by 4–6", the tank be pretty much entirely in front of the vent’s airflow. The tank is about 18–24" away from the vent in the current position, so maybe it's not a big blocker to the airflow. I could shift it a bit more to the right without blocking the door. I’m not sure what the best placement is, or if the vent issue is even a significant problem.
Photos 2 & 3 (Basement under living room):
These show what I believe is the area directly below where the tank is positioned upstairs. One photo is a view of the basement ceiling, and the other shows the foundation wall and joists. You can match the two photos by looking at the blue and red PEX water lines.
I think the two joists shown are the ones that will carry the tank’s load. They’re roughly 15–16" on center. Between them you can see HVAC ductwork, electrical lines, and a PVC run that’s parallel with the joists, but should be straightfowrard to squeeze some supports in there?
Photo 4 (First floor floorplan):
I'm also attaching my first floor floorplan for reference. I put in red approximately where the tank will sit. The living room is unfortunately a bit of an awkward layout given it has doorways on all 4 sides... and then an angled fireplace.
Awhile ago, I wanted to put the tank along that dining/living room wall on the dining room side. I decided against it because the space under the dining room is completely finished and there's no easy way for me to add structural supports.
Look especially for improper drilling of the affected joists for utilities like plumbing. Sometimes stupid things have been done and the floor is holding the joist up. It has just never had any real load on it.
You mentioned the floor is sloping downward from the wall now. It probably wasn't built that way.
If memory serves, you do not want to shim between the tank and the stand. You want to shim the stand to make it level and, as a result, the tank will also be level. I've never glued or fastened shims to anything. I slide them under until they're tight and then the weight of the full tank should keep them in place.Ah I see. makes sense.
For the shims, is it sufficient to just slide it underneath the tank, or should they be glued or fastened to the bottom of the frame?
Sorry that was a typo. I meant should I just slide it under the frame without glue/fastening or should I glue/fasten it under the frameIf memory serves, you do not want to shim between the tank and the stand. You want to shim the stand to make it level and, as a result, the tank will also be level. I've never glued or fastened shims to anything. I slide them under until they're tight and then the weight of the full tank should keep them in place.