Hi guys We are in the middle of constructing our two storey icf house, and after reading another post about finding engineering for your given home. I was curious as to what others have had to do in there local area to satisfy the Authority. I will say that it was quite frustrating finding a engineer in our area let alone someone that was willing to take the project on. With our house we are using 8" core for the basement then at the floor line we transition to 6" for the next 2 floors. The footing size was 26x9 with three rows of 15m rebar and 15m bridges placed 16" o/c across. The basement walls required 15m Rebar placed 8" o/c vertically more to the outside and 10m 24" o/c placed to the inside of the block. Horizontaly we had to a single row of 15m alternating with a double row of 10m. For the next two floors we have to go with 15m vertically 12" o/c and 10m Horizontaly 16" o/c. Like I said curious to see what others had to do with there rebar placement. Jon

ICF is simply reinforced concrete and is engineered nearly identical to plain jane panel formed reinforced concrete. It's sorta surprising that engineers don't recognize that.

I had a similar build with basement and first floor walls, although we went with conventional framing for the second floor because it soared pretty high. I am in a high seismic zone.

Initial indications were 8" or 10" walls at the base, transitioning to 6" on the uppers. Engineering, and adding in some "bumpouts" enabled us to go down to 6" thick concrete for all walls. I also used Insuldeck for the basement/first floor interface which I believe enabled the downsizing as well.

Footings were 60" wide by 10" deep with #4 laterals at 10" o.c.and #4 lineals. Footing to wall transitions were #5 "ells" at 8" o.c. Walls are vertical and horizontal #5 bar at 16" spacing.