It was good for the ICF industry that ICF engineering is included in the 2006 IRC. But I am disappointed in the complexity and the lack of scope. And that goes for the PCA prescriptive method too. The IRC and Prescriptive Method uses odd sizes, 3.5", 5.5" and 7.5", instead of the 4,6,8". They use weak 2500psi concrete, who uses 2500psi concrete it doesn't pump well. It mainly uses grade 40 rebar when grade 60 is the normal, because it is the same price, at least here.
I am bidding on a 2 story ICF home and the IRC does not cover the 16' overhead door lintel or two 10' window lintels, in a 6" ICF.
The industry needs a good comprehensive "generic" engineering like Nurture's or Logix's.