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craigNeasttx 03-02-2005 06:07 PM

Concrete Slab Help
I am starting an addition on our lake cabin. I need some advice. The addition is going to be approximately 19X28. My problem is i am not sure i can do a slab foundation. The reason is this. Corners A and B will be attached to the existin slab. Corners C and D will be the 28 ft ends. During this 28 ft, there is a decline in elevation. On C corner, it drops to 16"...On D corner it drops down to 30". The books i have read say that you can only fill up to 24" with sand or sandy loam type dirt. Less than that with gravel. The grade is iron ore. Very solid, but i am afraid of the 30" drop. My question is how do you handle this? Any help will be appreciated.


jonneybbob 03-08-2005 05:37 AM

concrete slab
take slab down lowest point on foundation on top to d.p.c.

jonneybbob 03-08-2005 05:45 AM


Originally Posted by jonneybbob
take slab down lowest point on foundation on top to d.p.c.

or buil..d standard foundation of brick and block and infill with hardcore.and slab on top d.p.c. level.

wippernm 04-04-2016 11:06 PM

Re: Concrete Slab Help
Want to build light metal carport turning into light duty wood working shop. Back yard is inaccessible and would require pumping over home due to small access.

What concrete requirement for 30 x 30 x 7 building. Will be adding 6" metal stud for insulation and wiring. Ability to add back wall and front wall with mini storage overhead door and walk door.

Any ideas or suggestions?

ron45 04-05-2016 05:38 AM

Re: Concrete Slab Help
Have you checked your area to see how much it would cost to rent a pump truck.?

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