One of the first steel member to be installed is the top plate. The metal stud fits in a grove created by pouring the concrete 1 ½” below the top of the ICF block. This width in the ICF block is 6”. The 6” steel obtained from the alternate supplier actually was 6 1/16” wide. Unlike a wood stud, you just couldn’t trim off the 1/16” to make it fit. So many hours were devoted to widening the channel by 1/16” so the steel stud would properly fit.