I have finally finished the construction of the first box. I did run into some design issues but that was expected the first time. I had
Home Depot cut my plywood pieces for me at 54" by 99" (4.5 ' x 8.25') BUT the plywood I used to for them to cut was a 4'x8'. So the pieces I had were 54" by 96".
I started by attaching the painted 2x4x8 to the1/4'x12'x8' plywood piece with the 1 1/4'" screws.
Then when I was constructing my boxes the inside dimensions, as I
understood them from the plans, needed to be 4' by 8'. Therefore, I had
to cut my 54" side down to 48" (4').
Above is how I attached the corner. The side facing us is the 48" piece.
Below are the final products.
Next, I will begin to prepare the site location and order the bulkhead fittings that will allow for attaching the PVC water pipes to connect the whole system. See you soon.