I guess I don't understand the concern since if you are building a post and beam building, you always set the posts in concrete. At least every post and beam building I ever heard of is set in concrete. It's standard building code here in Wisconsin. In fact, I think I could probably get Oehler's plan passed for permit before I could get an Earthship passed in this area depending on the county. However, I think they both have there merits along with the many other natural or recycled building structures out there. With weather extremes and high humidity in this area, I always am concerned about using certain materials as well.