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Old 08-12-2008, 10:59 PM   #1
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Free standing pergolas


My question to all is with a free standing pergola over patio pavers what would be the best way to secure the post which be covered by stone cast columns. My thoughts are to drill a 1/2" hole in the paver and drive a 24" piece of a number 4 rebar into the hole leaving about 6 inches of the bar exposed in which I would also drill a 1/2" hole in to the bottom of the post where the 6" of rebar would go. Any and all thoughts would be appreciated. Thanks

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Old 08-12-2008, 11:21 PM   #2
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Free standing pergolas


Hopefully your pergola posts are going to be sitting on a concrete footing, not just on pavers.

If uplift or overturning isn't an issue, a piece of threaded rod (I prefer that to rebar) can be epoxied into the footing and epoxied into the post. Threaded rod isn't a structural connection, so if that's what you're looking for you need to do something like a Simpson post base that imbeds into the footing.

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Old 08-13-2008, 01:44 AM   #3
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Free standing pergolas


How's about you move that pesky paver out of the way, dig a hole, pour a proper footing and drop your posts into the concrete at least 2'. That will introduce a point of rot where post leaves concrete but having that 2' of post buried in concrete goes a long way towards stiffening up a free-standing pergola. Proper flashing will help prolong the post life.

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Old 08-13-2008, 04:20 PM   #4
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Free standing pergolas


I used to work for a timber framer, and it always amazed me how many people didn't want a cap to be put on the bottom of an exterior post because it wasn't 'aesthetic'. Like rotten posts are better?

I would cut a piece of torch-on roofing membrane the same size as the post and melt it to the bottom. As far as fastening goes, the rebar idea would work fine as a locator, but probably won't help if the winds get strong enough. For a permanent fixture it's tough to beat a simpson strap cast into a cement footing.
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Old 08-15-2008, 01:32 PM   #5
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Free standing pergolas


Thank you all for replying, I am hoping they do have concete under their pavers with it being part of the pool deck. I think maybe after reading everyones reply that maybe I should use the Simpsons ABU44 with a threaded rod epoxied to the pavers. Thanks
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