The effectivness of a PWF foundation is dictated by the soil conditions and water table , depth below grade of foundation and lastly that it has been built correctly( to eng. spec, proper blocking, wall straps installed at proper centers , correct membrane and water barrier on exterior, etc). Much the same can be said for concrete or bloc foundations. I have built many PWF and concrete foundations, each is useful for certain designs and areas. Just my 2 cents.
|