Concrete thickness

[zookeepwr]

Someone put up a 12x24 metal garage on a slab that is 3 1/2” thick. The perimeter is the same thickness, it has not been dug deeper. Can I put a two story garage on that slab? Thank you in advance for your help.

 

[LXCam]

Not a chance as is.

 

[zookeepwr]

Thank you for getting back to me so quick. If I dug under it and went in about a foot and about a foot deep leaving virgin ground underneath and filled it with concrete, do you think that would work? Thank you again.

 

[LXCam]

Thank you for getting back to me so quick. If I dug under it and went in about a foot and about a foot deep leaving virgin ground underneath and filled it with concrete, do you think that would work? Thank you again.

In theory I suppose. But what you’d never accomplish without a major undertaking is a solid bond between both. Between a thorough cleaning and roughed surface then trying to mitigate consolidation and air pockets, it’ll probably never be approved.

Personally I’d leave that a floating slab and pour a perimeter footer.

You are planning on having this engineered and permitted I hope?

 

[Rusted Nut]

Pour a footing/wall around the slab, then use that as your load bearing for walls.

 

[zookeepwr]

Thank you for your information. I really appreciate It.

 

[nadogail]

Welcome to the Forum from Southwestern California.

 

[Sumboodie]

In theory I suppose. But what you’d never accomplish without a major undertaking is a solid bond between both. Between a thorough cleaning and roughed surface then trying to mitigate consolidation and air pockets, it’ll probably never be approved.

Personally I’d leave that a floating slab and pour a perimeter footer.

You are planning on having this engineered and permitted I hope?

Permits aren't a thing in most areas that believe in freedom.