That does not answer differential setellemnt issues except it will float as
one with differnt settlement values. Have you considered deep caissons as
an alternate? It sound like you need to consider uplift loads also due to
swelling in the clay soil. I wonder what recommendations if any are
present is the soil's report for foundation system??
Samir Y. Ghosn,P.E.
Harris & AssociatesAt 12:26 PM 2/13/2001 -0600, you wrote:
>I'm in the early design phase of developing a foundation plan for a
>rectangular shaped one-story house. My initial design concept was pouring a
>continuos perimeter footing with interior piers ( the house will have a
>crawl space - floor joist). However, a preliminary soil report indicates a 4
>ft thick layer of pipe clay about 6 ft below grade. I'm re-thinking my
>initial foundation concept. A monolithic slab with turndowns might be more
>appropriate. That way the entire house can float. Any other suggestions?