First, we will cut the pieces for decking. Start by cutting two full sheets of 1/2" plywood down to 7' long. These two sheets will make up the large pieces of the decking on the two modules.

Next, take your third sheet of 1/2" plywood and rip two strips of it that are 1' - 11 1/4" wide.

Cut one of these narrow strips to 7' in length. Cut the other to 5' - 10" in length.

We'll make the notch on one of the large sheets of plywood in a separate step.