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Hi all,
I want to have a hammock pergola built in the backyard, basically exactly like this one. It looks like its made out of cypress or cedar (redwood?), which is what most of the nice pergolas are made of if I understand correctly. My question is about burying the posts. I've read that burying these types of posts makes them rot quicker, but I've read you can dip them in pressure treatment stuff, and wrap them in a certain material, bury them in cement, and that they'll then last a very long time. But I keep reading the absolute best thing is to bury a CBRS (or whatever) metal mount in cement, and then mount the post in that, which will keep the wood out of the ground. Obviously that does seem better, but this is the problem:
Most of those discussion are for porches or other square or rectangular shaped structures. For a hammock pergola, there is only two posts, which makes me worry about it falling over to one side or the other. In my naive, non-construction mind, I feel like if the posts were mounted on metal mounts and the metal is buried in cement, that it would be so top heavy that it would just either rip the metal mounts off or it would simply uproot the cement (I feel this way because you'd have like 2-3 feet of cement buried, but 8 feet of post, with a bunch of wood shit up top, giving it tons of torque to uproot itself.) I feel that in this case, burying the posts would be best, but then we increase the chance of rot.
What would you do? Are my concerns retarded?
I want to have a hammock pergola built in the backyard, basically exactly like this one. It looks like its made out of cypress or cedar (redwood?), which is what most of the nice pergolas are made of if I understand correctly. My question is about burying the posts. I've read that burying these types of posts makes them rot quicker, but I've read you can dip them in pressure treatment stuff, and wrap them in a certain material, bury them in cement, and that they'll then last a very long time. But I keep reading the absolute best thing is to bury a CBRS (or whatever) metal mount in cement, and then mount the post in that, which will keep the wood out of the ground. Obviously that does seem better, but this is the problem:
Most of those discussion are for porches or other square or rectangular shaped structures. For a hammock pergola, there is only two posts, which makes me worry about it falling over to one side or the other. In my naive, non-construction mind, I feel like if the posts were mounted on metal mounts and the metal is buried in cement, that it would be so top heavy that it would just either rip the metal mounts off or it would simply uproot the cement (I feel this way because you'd have like 2-3 feet of cement buried, but 8 feet of post, with a bunch of wood shit up top, giving it tons of torque to uproot itself.) I feel that in this case, burying the posts would be best, but then we increase the chance of rot.
What would you do? Are my concerns retarded?
