the depth of a foundation ,an or the depth of a slab
2007-11-17 05:48:17 · 6 answers · asked by noel s 1 in Home & Garden ➔ Decorating & Remodeling
First, call the local utilities commission or whoever to make sure there are no wires or gas lines buried in the area. VERY IMPORTANT!!
Then, the slab itself should be at least 8" thick if you are going to park cars on it. It should also have reinforcing rod in it.
However, around the outside perimeter of the slab, it's always a good idea to dig at least 18-24" deep, so the poured, finished slab is kinda like a big upside down concrete box (8" thick in the middle, but 24" deep around the edges.
This serves two purposes... 1. keeps the slab from heaving up from the ground freezing, and 2. keeps rats and other animals from burrowing under (they'll dig under a slab that's only about 8" deep around the edges.)
2007-11-17 05:54:18 · answer #1 · answered by Anonymous · 1⤊ 0⤋
depends on how big the addition is, if its under 8 ft just go with a slab, the more weight there is the stronger the foundation has to be,
2007-11-17 13:54:02 · answer #2 · answered by William B 7 · 0⤊ 1⤋
Check your local building codes, they may place some limits on what you can or can not do.
I would prefer to match the existing foundation if possible. Be sure to tie the new floor into the existing floor, to prevent the floor from heaving.
2007-11-17 14:32:58 · answer #3 · answered by ugly joe 4 · 0⤊ 0⤋
if you have a footer and block foundation under existing garage it would be a good idea to do the same with the new one... you dont want them moving independently of each other...
2007-11-17 17:32:09 · answer #4 · answered by Anonymous · 0⤊ 0⤋
I think 4 to 6 inches
2007-11-17 13:51:26 · answer #5 · answered by mtchndjnmtch2000 4 · 0⤊ 2⤋
you should have at least a slab i would do at least a 2 or 3 inch one but it's your call
2007-11-17 13:51:43 · answer #6 · answered by Loreen W 2 · 0⤊ 3⤋