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Looking for opinions on framing a deck.. bumped**

Posted on 4/16/21 at 11:12 am
Posted by TheRouxGuru
Member since Nov 2019
11925 posts
Posted on 4/16/21 at 11:12 am
I’m building a deck on the side of my patio to cover some exposed roots, probably 6-12 inches off the ground. I’m pretty good with carpentry tasks so I’m going to do this myself, but I was curious: how many joists and how many runners would y’all use? I’m going to use treated lumber, not composite decking if that makes a difference. Also, would y’all use 2x6’s on top, or something else?

The deck will be 12x13, and like I said, probably anywhere’s from 6-12 inches off the ground

*****probably should have put my new question in the OP. Check the last post for my new question ** god bless cpt morgan
This post was edited on 4/24/21 at 12:39 am
Posted by keakar
Member since Jan 2017
30152 posts
Posted on 4/16/21 at 11:23 am to
anything over 8ft should go up to 2x8s and over 12ft go with 2x10s, if you dont the deck will bounce when walked on

for the top, yes you dont want to go over 2x6s or they cup and it will be very noticeable to see and walk on

also use a pencil between boards to give you a uniform 1/4" gap
This post was edited on 4/16/21 at 11:24 am
Posted by lsu777
Lake Charles
Member since Jan 2004
34991 posts
Posted on 4/16/21 at 11:43 am to
quote:

anything over 8ft should go up to 2x8s and over 12ft go with 2x10s, if you dont the deck will bounce when walked on


or run a stringer down the middle that is supported underneath.
Posted by TheRouxGuru
Member since Nov 2019
11925 posts
Posted on 4/16/21 at 11:43 am to
Awesome, solid info, thanks

I know about the ‘pencil’ trick, but typically will cut a little spacer out of some cutoffs
Posted by TheRouxGuru
Member since Nov 2019
11925 posts
Posted on 4/16/21 at 11:45 am to
Keep the little tips coming


Was going to put 4x4’s in the ground with concrete for the legs. Is that overkill? Should I use those preformed concrete forms for the base of the 4x4s or just pour concrete around them?
Posted by rodnreel
South La.
Member since Apr 2011
1467 posts
Posted on 4/16/21 at 12:15 pm to
I DIY one about 4 years ago, 18' by 20' with composite on top. It varies from 8" to 16" above ground. I used 12"X12"X2" concrete pads toped with house pillars when needed located at the corners and intersections, with two more spaced evenly under the 4X4 timbers.


6"X6" framed around the outside, with 3 evenly spaced 4"X4" in the middle. used 2"X8" with hangers on 14" centers between timbers. Its solid.

One item that saved a lot of time was a palm nailer.
Posted by TimeOutdoors
LA
Member since Sep 2014
12907 posts
Posted on 4/16/21 at 12:43 pm to
quote:

anything over 8ft should go up to 2x8s and over 12ft go with 2x10s,


Consider cantilever? I believe if you went 10 foot instead of 12 you could have the beam at 8' and do the entire thing with 2x6. Cantilever portion does not need to be longer than 1/4 of backspan of the joist.

quote:

not composite decking

Good Choice. I love composite decking but not next to a structure because they can really make things worse in case of a fire (product is getting better though).
This post was edited on 4/16/21 at 12:46 pm
Posted by UncleSlick
PA
Member since Mar 2019
127 posts
Posted on 4/16/21 at 4:51 pm to
Pressure treated lumber may be slightly different dimensions due to their moisture content. So a tip I learned for keeping the tops of your joists nice and flush with each other is to run a power planer across them to smooth out any bumps before you lay your decking down
Posted by TheRouxGuru
Member since Nov 2019
11925 posts
Posted on 4/16/21 at 6:01 pm to
I actually had planned on doing that, but was wondering if it were totally necessary

Now I see that it is. I’m a perfectionist, if it isn’t level, it will bother me

Should I slope this structure slightly or build the deck level?
Posted by Cracker
in a box
Member since Nov 2009
18912 posts
Posted on 4/16/21 at 9:30 pm to
6-12 inches of gravel pour concrete over it
Posted by UncleSlick
PA
Member since Mar 2019
127 posts
Posted on 4/17/21 at 11:21 am to
Up to you but I’d build level. As long as you maintain a gap between your deck boards water should drain easily
Posted by fightin tigers
Downtown Prairieville
Member since Mar 2008
74543 posts
Posted on 4/17/21 at 12:45 pm to
quote:

also use a pencil between boards to give you a uniform 1/4" gap


I've always found a nail to give a nicer finished gap with how much boards shrink up these days.


Also find that leaving the boards long then popping a chalkline and cutting leave a lot more uniform look on the edges if leaving them open or with an overhang.
This post was edited on 4/17/21 at 12:46 pm
Posted by LSUA 75
Colfax,La.
Member since Jan 2019
4326 posts
Posted on 4/17/21 at 2:42 pm to
I wouldn’t put the post in the ground.I did that once for a lean to off my shed with concrete around them.They rotted at ground level in about 10 years.
Don’t know how to do links but there are some metal brackets that go into concrete and posts sit on them.
Posted by oldreserve55
Reserve, LA
Member since Jan 2015
35 posts
Posted on 4/18/21 at 1:48 pm to
LINK

Decks.com internet site. Here's some reliable confident help. Go to reliable sources for accurate info.
This post was edited on 4/18/21 at 1:50 pm
Posted by TheRouxGuru
Member since Nov 2019
11925 posts
Posted on 4/24/21 at 12:35 am to
Was going to start this project Sunday, but when I sat down to order material, I was wondering about the ‘legs’ of the deck.. should I just sink 4x4’s into the ground with concrete or should I use those cinder block lookin bases for the 4x4s? Pretty sure they’d have to be 1-2 ft in the ground for it to make sense



Also, how many ‘posts’ would y’all use? Any other opinions are welcome, how would y’all support this deck? Like I said before, I’m pretty handy, and pretty decent with carpentry work, but I’ve never built a deck before and I’d like to do it right. I’d hate to build it, have it looking nice, only to have it start sagging in a year or two.

I really appreciate everyone’s input, to be honest, I’ve actually taken ‘notes’ from this thread, which is something I’ve never done before



If any of this post doesn’t make sense, I reserve the right to be laughed at.. just been piddling around in my garage all night drinking rum and decided to roll forward with this project
This post was edited on 4/24/21 at 12:42 am
Posted by GeauxldMember
Member since Nov 2003
5004 posts
Posted on 4/24/21 at 10:01 am to
I assume the exposed roots belong to a healthy, living tree(s) and that’s why you can’t disturb them?

From past experience, I’ve come to view wooden decks as a last resort. Ground contact lumber or not, building a deck that close to the ground is going to limit air circulation and shorten the lifespan of the deck. Just food for thought, in case you have other options to consider...
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