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Innovation - Our patented , cast-in-place wall cold-joint detail ensures a perfect formed expansion cold-joint in cast-in-place walls . Rather than allowing random cracking in c . i . p . walls , this innovative joint ensures control and dictates where fracturing will occur , and prevents unsightly cracks in the finished wall , leaving a wall that is more esthetically pleasing . The photo in the bottom left corner shows ¼-inch poly foam adhered to galvanized sheet metal attached to ½-inch trapezoidal reveal . Any wall shape can be constructed using this detail .