Leveling 470 gallon tank on concrete

[DocG]

I have a large tank coming soon. 120x30x30

I had the steel frame delivered and discovered that the floor was very uneven. I was told by the frame builder that the best way level the tank was with self-leveling concrete.

My wife is worried that new concrete on top of old concrete will not be strong enough to support a tank of this size.

Anyone have any idea if self-leveling concrete will work?

 

[Crazy One]

If the stand is not powdercoated yet, I would try and weld some nuts flush as possible to the bottom of the tubing and screw some bolts into them. This way you can adjust it as much as possible. I'd install them every 24" from side to side. and one for each corner. hope that gives you an idea.

 

[BrianOKC]

I believe self leveling concrete has a PSI around 2000-3000 which should be enough to with stand a tank that size. A lot cheaper option is to trace the curve of the floor onto a 4x4 or some other piece of wood that will be thick enough for u to cut some of it away and still withstand the weight of the tank without splitting. To accomplish this u just use a smaller block and a pen to run along the floor and it traces the curve of the floor onto the 4x4 and you cut the excess off.

 

[BrianOKC]

Here is a link that shows pic's of leveling the stand with 4x4's.
http://www.reefcentral.com/forums/showthread.php?s=&threadid=665314&perpage=25&pagenumber=12

 

[Reefski's]

putting bolts under the legs to support all the weight on is a bad idea.

the whole frame should be on the ground not on feet of any kind. you want the wt distributed, not concentrated. think high heel shoe hitting you on the head vs a flat.

drill some holes into the existing concrete, frame it with 2x4 and use rebar and steel mesh or rebar and pour a new pad with the self leveling concrete tying it to the existing concrete.

Carl