[HELP]Floor Sagging? New 150gal Tank not level after 5 days

[drkcurrent]

Temporary solution seems to have stopped the sag but need a better foot for the jack to hold as it is pushing into the soil below.

Still not level but better. Wasn't sure how much to do the jacks to start

 

[Sean Clark]

They definitely don't make them like they used to.

 

[Beau_B]

Decided to read up on this a bit.

something seems off because atleast this little bit of googling leads me to believe that trusses should have an advantage. I am still suspect that the ones shown in the op are installed right. I can’t see where they are supported to the floor.

Floor Trusses vs Floor Joists: Explained

Floor trusses are an assembly of top and bottom chords separated by diagonal braces, while floor joists are horizontal members that connect beams. Floor trusses have a higher load-bearing capacity and provide greater span lengths,

mellowpine.com

Still think I prefer joists though haha.

They are hanging, for lack of better description. The top plate of the joist and about half the web is resting on the sill plate. The reason is they are likely 24" tall (versus traditional 9.5" or 11.5") and we don't want rim joist to be that high makes for taller assembly with various negatives. I-joists are popular option, and those are typically maxed at 14" for residential.

The construction appears correct, but it is being over loaded (and/or was previously). The original build spec was likely to code minimums and time has not been friendly. Web trusses are not inherently bad by any means, but they do need to be spec'd.

I would continue to work towards reinforcement; first action with the columns is good, but as expected they will drive into the ground without proper footings or bases.

Definitely correctedable and there are "many ways to skin a cat."

 

[Brooklands]

Hey All,

Just finished setting up a 150gal tank with a 40 gal sump. Tank has been rolling for 5 days and I noticed today that one corner the water level is leaning towards.

I checked the crawl space and do not notice anything but i fear this is a major issue.

How can I support the floor?

ellis manufacturing. get two jacks and put a beam under the joists. it will cost a few hundred bucks, but you can gently level it and it will support 18,000lbs easy.

 

[bratfink]

I’m not a civil engineer, but you should understand the strength in those joists is not from the wood. It’s the nail plates holding the load.
As the floor sags you’ll see the nail plates starting to lose grip. Usually in the tension joints.
Wood rarely fails quickly, it gives lots of warning.
Nail plates however fail instantaneously.
Just ask a fire fighter.
Makes me cringe to see nail plates so widely used in building these days.