EddieWalker
Epic Contributor
... but i'm not sure what will happen when closing on the gravel. will the gravel (which will never be as even as a concrete floor) cause the door safety to automatically reopen the door, thinking it hit an obstruction?
I put a preasure treated 4x6 into my gravel floor on a previous barn that I had. I dug it down so that it would only be about an inch or so above the gravel. For strength, I put it with the 4 inch side up, but don't really know if it matters which way it goes. A 4x4 would probably work just as well. To anchor it, I drilled 3/8 holes through the wood every 12 inches. Then I cut 3/8's or #3 rebar into 18 inch lengths and hammered it through the wood, and into the ground until it was flush with the top of the wood. I sold that barn and the new owner has three tractors and a jeep that he keeps in there. The biggest stractor is about 16,000 pounds, and there's no problems with it moving.
Eddie