A bit early for this with snow flurries going on right now but… I’m thinking about putting in a expansion yard/ junction area on my RR this Spring. My back yard is on a slope and where I want to build this benchwork will have it about 40 inches off the ground. In another area I have a small yard 30 inch by 15 feet built on a benchwork about 6 inches of the ground. I used 2x4’s and the top is plywood I had painted to ward off the elements. My new yard will be maybe 30-36 inches wide and up to 20 feet long and I’m thinking what if instead of using plywood for the top I build a sturdy benchwork to handle the weight then use a hardware clothe for drainage and shovel a inch or 2 of the 3/8th grey gravel that I use for ballast on top? I would need to build the sides up so the ballast doesn’t wash or fall off. I’m thinking if I used plywood then put the stones on top that it would trap alot of moisture and rot out the ply faster. After 6 years the other yard is still OK but that one doesn’t have stones on top.
What do you experts think about this plan?
If anyone has done such a thing what are the pitfalls?
Thanks, Todd