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Gotta gate I'm getting real close to hanging and I am really struggling with whether I have chose the correct posts to mount to, and whether my concrete hole to support the post will be deep enough. I have tried a few post calculators online but can't find enough information to feel confident in my posts. The gate is 8' tall, 4' wide, and weighs almost 300 lbs. the post I chose to hang the gate on is a 2"x3" structural tube post with a 1/4" wall thickness. On the other side of the post is a 13" wide side panel also 8' tall that is welded to the same post. That panel additionally weighs about 85lbs. My initial plan was to set the posts 30" deep in concrete and hang everything off of the post without tying any tabs or anything into the building. It's a large archway and I'd really like it to be free standing without anything tied to the to the side of the archway to support the post when it's under the load of the gate. From what I'm describing and the pictures do you think I'm overdoing/underdoing it? Will that post set 30" deep in concrete be enough to support all that without sag?? You can see in the picture the posts. The left side is where I am talking. The post will have the gate and side panel mounted on the same post together.