ICF foundations... I used an ICF foundation on my timber frame home. I had no problem incorporating the ICF foundation with the timber frame. It looked very much like "daiku's" detailed drawing. The only difference is that the timber frame landed mostly on the concrete since the ICF's are much thicker than a traditial 8" poured wall. I used Logix ICF's. The block itself was about 12" thick, can't remember the exact width (3" foam, 6" concrete, 3" foam). There's only 6" of concrete because the amount of re-bar required is ridiculous, but strong.
The part of the timber that did not land on the concrete had a built up 2x8 support under it. The foundation footings in the post locations are much wider than the rest of the foundation.
Not sure what all the booing and hissing is about with the ICF's. In my opinion they're superior to traditional poured concrete walls. Re-bar horizontally every 16" an vertically every 24". They are far more expensive, but the R-value speaks for itself. The cost to heat a home isn't going down any. Payoff would take a long time, but the our environment appreciates it.
