I wanted to get your opinion on whether you thought this installation would be adequate to sustain the opening and closing of a 16’ aluminum single swing driveway gate through the years?
I installed a 4” x 4”x 10' (~1/4" thick) hot dipped galvanized steel driveway gate post. The hole I dug for the post was 4’ deep by 25” in diameter and belled at the bottom. Due to the slope of the ground and the height of the driveway, the post only ended up being sunk 3’ in the concrete and 6” deep in dirt, to allow for grass growth over the concrete. The remaining 6” below the base of the post is concrete, which would equal the entire depth of the hole 4’. The hole took 17 bags of 4000 psi Quickcrete to fill. It was recommended that I use at least 7-8 bags of concrete. I was told by the manufacturer that the weight of the 16' aluminum gate would not be more than 250 lbs.
By the way, all of my 3 fence posts connected to the gate post are sunk in concrete. And the ground I am working in is hard clay.
Thanks for your help.
I had also considered filling the 6" of top depth, which is currently dirt filled, with concrete for added stability?