check out http://www.cwc.ca. The Canadian Wood Councel publishes a book on PWFs. Plan on using one when I finally build a house. Supposed to be just a strong as concrete and life expectancy > 75 years. longer if proper drainage is maintained. Those who have them that I have spoke to think that they are great. But there is this perception that concrete is superior. Technically PWFs are superior, if you look at the facts.

Bruce,