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How To Build A Deck 7 Ft High Without Lateral Bracing

 
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Old 07-10-2015, 07:39 PM   #1
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How To Build A Deck 7 Ft High Without Lateral Bracing


Is there any way to build a deck 7 ft high attached to house 16' out without lateral bracing?
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Old 07-10-2015, 07:46 PM   #2
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Re: How To Build A Deck 7 Ft High Without Lateral Bracing


Yep put a 6x6 post about every 7' across your beam and bury those suckers about 3' each.....how wide?

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Old 07-10-2015, 07:49 PM   #3
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Re: How To Build A Deck 7 Ft High Without Lateral Bracing


18 ft ... Was hoping to use top mounted brackets on footing
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Old 07-10-2015, 07:52 PM   #4
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Re: How To Build A Deck 7 Ft High Without Lateral Bracing


Quote:
Originally Posted by SelectDecks View Post
Yep put a 6x6 post about every 7' across your beam and bury those suckers about 3' each.....how wide?
Yep, 6x6 pressure treated minimum...
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Old 07-10-2015, 08:01 PM   #5
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Re: How To Build A Deck 7 Ft High Without Lateral Bracing


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Originally Posted by Smithanator View Post
18 ft ... Was hoping to use top mounted brackets on footing
The lateral strength will be tremendously greater if you put them below ground.
J bolts with bottom post mounts suck big ones....

If you are able to sheath/skirt just below the top, you will add much strength.
Make it decorative.
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Old 07-10-2015, 08:09 PM   #6
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Re: How To Build A Deck 7 Ft High Without Lateral Bracing


Running your deck boards at 45 degrees will help with lateral bracing. You could also run a brace diagonally on the bottom of the joists as well.
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Old 07-10-2015, 08:16 PM   #7
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Re: How To Build A Deck 7 Ft High Without Lateral Bracing


Running azek boards with house face screwing should help with lateral movement as well right?
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Old 07-10-2015, 08:19 PM   #8
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Re: How To Build A Deck 7 Ft High Without Lateral Bracing


ask killer
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Old 07-10-2015, 08:23 PM   #9
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Re: How To Build A Deck 7 Ft High Without Lateral Bracing


Quote:
Originally Posted by Smithanator View Post
Running azek boards with house face screwing should help with lateral movement as well right?
I don't think your going to get much support from pvc. Although every little bit helps. Brace the joist bottoms and flag pole the posts will go along way.
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Old 07-10-2015, 08:27 PM   #10
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Re: How To Build A Deck 7 Ft High Without Lateral Bracing


Mike nailed it - run the boards diagonally , double rim boards glued & screwed
As for the posts - I would go with PBA myself, never have been a fan of buried posts
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Old 07-10-2015, 08:30 PM   #11
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Re: How To Build A Deck 7 Ft High Without Lateral Bracing


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Originally Posted by Californiadecks View Post
I don't think your going to get much support from pvc. Although every little bit helps. Brace the joist bottoms and flag pole the posts will go along way.
This.
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Old 07-10-2015, 08:35 PM   #12
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Re: How To Build A Deck 7 Ft High Without Lateral Bracing


Another thing worth mentioning is if you are in an active seismic zone you may want to consider steel posts with buckets welded to the tops.

If you use wood posts the Simpson CCQ66SDS buckets help as well.

Last edited by Calidecks; 07-10-2015 at 08:50 PM.
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Old 07-11-2015, 12:07 AM   #13
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Re: How To Build A Deck 7 Ft High Without Lateral Bracing


flag pole footings
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Old 07-11-2015, 12:16 AM   #14
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Re: How To Build A Deck 7 Ft High Without Lateral Bracing


None of the jurisdictions in my part of RI will let you bury posts. The diagonal bracing on the underside of the joists should fly though. Any reason you can't use knee bracing other than the HO's "aesthetics"?

What town are you dealing with?
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Old 07-11-2015, 06:06 PM   #15
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Re: How To Build A Deck 7 Ft High Without Lateral Bracing


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ask killer
I dig holes 56" deep 12" diameter, bury them, if you use composite nail a 2x6 diagonally on the underside of the joists the opposite way ur decking is going, always put your deck boards down diagonally
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Old 07-11-2015, 06:29 PM   #16
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Re: How To Build A Deck 7 Ft High Without Lateral Bracing


Quote:
Originally Posted by Californiadecks View Post
Another thing worth mentioning is if you are in an active seismic zone you may want to consider steel posts with buckets welded to the tops.

If you use wood posts the Simpson CCQ66SDS buckets help as well.
Most any structural problem, I at least price the steel option.
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Old 07-12-2015, 09:29 AM   #17
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Re: How To Build A Deck 7 Ft High Without Lateral Bracing


How much lateral force are decks subjected to? The downward force is easy to figure. I assume uplift force is zero.
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Old 07-12-2015, 10:47 AM   #18
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Re: How To Build A Deck 7 Ft High Without Lateral Bracing


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I assume uplift force is zero.
Depends on you location. In a seismic area, uplift is something to think about. Also, how windy is the area?
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Old 07-12-2015, 11:13 AM   #19
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Re: How To Build A Deck 7 Ft High Without Lateral Bracing


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How much lateral force are decks subjected to? The downward force is easy to figure. I assume uplift force is zero.
Depends on location and structure. I assume at least some upward force in most of my decks to account for the occasional hurricane.
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Old 07-12-2015, 06:09 PM   #20
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Re: How To Build A Deck 7 Ft High Without Lateral Bracing


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Depends on location and structure. I assume at least some upward force in most of my decks to account for the occasional hurricane.
Regulations on the coast in my area are pretty extreme now.
You're building a brick sht house even if it's a small ground-level deck, if in a wind area.

You can see pics of Bolivar peninsula beach homes before and after hurricane Ike. Lots of 2 story decks standing proud...and the house is totally f'ing gone....

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