While it's cold, I'm planning my summer project. I am going to build a shelter for my grill (and me) to protect from rain. Anyway, the plan calls for two 6x6 posts sunk in the ground 8 feet apart and a small cantilever roof. I'd like for the posts to have 7.5 feet of clearance. My question is will a 10 foot 6x6 with 2.5 feet sunk in the ground be enough support? Frost line so I have been told is 24 inches in my locality (Louisville, Ky). What are best practices for sinking a pole in the ground to delay rot?
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