but until the concrete cracks the steel doesn't start getting ...Reason #4 - Lack of control joints. Control joints help concrete crack where you want it to. The joints should be of the depth of the slab and no more than 2-3 times (in feet) of the thickness of the concrete (in inches). So 4"concrete should have joints 8-12' apart. Read more about control joints here.The washing machine motor drive belt or pulley may be worn out. This is a rather involved repair
