The wooden frame ensures the stones don't move, and the iron rods make sure the wooden frame stays in place (apart from the 6" inch deep pit i dug where the limestones/gravel base is) so if you look at the shed from the top, it goes like this: grass, limestone, 2" wood, limestone, patiostone, and on top of the patio stones sits the shed.. Building a shed base with pavers how to build wood steps on a slope custom shed sorange county calif building a shed base with pavers 6x8 shed or 8 ft wide by 10 ft deep how to build a stack stone wall how much is a modern shed free wooden plans or patterns