Construction Two pieces of wood must be bolted together. One piece of wood is  inch thick....

Construction Two pieces of wood must be bolted together. One piece of wood is  inch thick. The second piece is  inch thick. A washer will be placed on each of the outer side of the top piece of wood. The washer is  inch thick. The nut is  inch thick. Find the minimum length of bolt needed to bolt the two pieces of wood together.