I apologize if wrong forum but I think it fits. I am anchoring a new mailbox with quickcrete. It is Iron as that is my trade. Instead of tacking metal runners to a stake in the ground to plumb the post I would like to just cover it with the soil. It is bottom heavy and I buried it once to make sure it held plumb well enough. My only question is will the quickcrete cure alright if buried? I know it shouldn't heave or anything but otherwise knowledge is short. Any help would be nice.

Hi, Can you help me, or point me in the right direction, to determining the size beam and timber / posts I need to span a 23' driveway for decorative purposes? My driveway is 23' wide where I wish to put a gate. I would like to have a 3' wide pedestrian gate on the north end of the driveway and 20' of vehicle gate on the south end. These are approximate lengths as the actual length is dependent on the size of the square timber / posts used. I do not plan on having the gates hang on these posts. I plan on using steel posts set directly behind the wood posts to hang the gates on. There will be 3 posts, and one long beam resting on top of the posts, spanning the driveway. This beam will not support anything other than it's own weight, and a sign hanging down that has the address and a 2nd sign that has our name. I have a drawing in a Word doc I can send as I cannot attach it, nor can I figure out to insert an image. Thank you for the help.