DIYbanter - View Single Post

wrote in
oups.com:

I suppose what I'm having trouble believing is that if the piers are
not on undisturbed soil or on rock then how do they help any, won't
they shift and settle? Isn't the point to put them on rock or at
least undisturbed soil so that they don't shift or settle as much ?

On one side of the pad, they will hit rock quick, but down the hill,
at the other end of the pad, if they only go down 18", then there is
still 6"+ of disturbed soil between the pier and the undisturbed soil
surface.

Wose yet. Codes are often stated that footings and the like have to put
xx" into undisturbed soil.

He said "the non-native soil is about 18"-24" deep." So if the soil is
disturbed 24" and say the code said 24" into undisturbed soil then they
would have to do down 48".

Anyone feel free to correct me on this. I'm not a builder, engineer,
inspector or the like. Just a professional wanna-be. And a damn good one
at that!