Concrete Slab Thickness and Your Large Tank Size

[bbaz123456]

Your contractor laid out a leveling cement at that thickness. Doubling the strength is a bit far out there. Unless the 2 surfaces became bonded at the molecular level all you have is two separate layers of concrete; each with a working strength of around 3600 psi.

+1
Gotta love them contractors. Ha. Sounds good, but not very likely

 

[bbaz123456]

Yes your concrete would be fine as long as the weight is distributed, as others said. I would do a perimeter of the 2x8's if not 10's or 12's
Even a sheet of 3/4 plywood would help if you can protect it from splashing saltwater

 

[bbaz123456]

Yes your concrete would be fine as long as the weight is distributed, as others said. I would do a perimeter of the 2x8's if not 10's or 12's
Even a sheet of 3/4 plywood would help if you can protect it from splashing saltwater

 

[bbaz123456]

Sorry man, I somehow missed more than half of the thread

 

[Dustin1300]

Dustin, Sorry I didn't answer completely. The center steel bracing is good. It helps distribute the weight, but all the wood, that doesn't have the steel stand sitting upon it, is not doing anything to disperse the weight.

Ok. I really added the 2x4s just to support plywood or an acrylic sheet I'll glue/silicone in for equipment.