Hello Tommy and yes, I designed the structure, which is as simple as you see. The 6in main posts are a foot into the ground with some concrete around.
One variation would be to have posts that allow slotting planks in and out, as heaps are filled and then emptied.
My structure has plywood screwed to sides and front, then unscrewed to turn and empty heaps.
Bay size is approx. 1.5m/5ft square, should be 4ft for a smaller garden.
