Iff u r on solid rock outcropping no foundation piers at all is required. Up
here in Central canada where frost heave reaches down 4-1/2' frost
projections must go down 4' in soil. or until solid rock.
"Brian Whatcott" wrote in message
...
On 16 Jan 2006 16:36:55 -0800, wrote:

I am having a manufactured home put up in North Texas, in the middle of
a drought.

My site is on the side of a hill, and the mobile home retailer
contracted some guys to dig out the the hill and use that dirt to level
a spot for the home. On one end of the pad, the non-native soil is
about 18"-24" deep. On the other end, almost solid rock.

All they did to pack the soil was to drive over it with a small dozer.

I have no experience in this and asked several people if this will
work, most said it is a bad idea.

So on the suggestion on many, I decided to go pier and beam. All the
pier and beam guys I called will only go down to 18" piers max.

My questions is, if you put 18" piers in soil that isn't packed that
good, am I getting any benefit from the piers, or am I still gonna have
alot of problems?


If the piers go down 18 inches to rock substrate, you're home n dry.

Brian Whatcott Altus OK