Cracked Cement Stair Tread

The cracked cement or chipped concrete stair tread is caused by the metal reinforcement being to close to the edge. The cement can't be to close to the metal because it has nothing to bond to. The cement bonds to the other cement but will not bond to the metal in such a small area. The metal reinforcement is in the wrong position, it is to low and should have been centered more in the stair tread.