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-   -   Deck post not plumb issue (http://www.diychatroom.com/f19/deck-post-not-plumb-issue-147307/)

sm424 06-17-2012 01:38 AM

Deck post not plumb issue
 
1 Attachment(s)
Hello everyone, I'm in the middle of doing my first deck job, and I'm afraid I might have a problem on my hands. I'm extending out my existing deck 10'. Everything has gone great, but one of my posts are not very plumb. The reason for this is because I had a hell of a time digging the post holes. The ground over here is full of rocks. It seems that the auger drifted while I was digging. once I was done digging I realized that my holes were no longer perfectly aligned, but I thought I could get away with that. I Notched out my posts and rested the carry beam in the notch. I then added a 2x6 cleat to the face of the post/beam combo, and bolted all three together. However one post is leaning slightly back to align itself with the other post. The beam itself is level and straight. Before I added the concrete I brought a contractor friend to look at it, and he thought it was alright. I then buried both posts with concrete. I know burying posts is a controversy in itself, but I'm not worried about that now. All I want to know is if I have something to worry about with my unplumb post? I know what my friend said, but I would like some second opinions. The post is about 42" in the ground, and is about 24" out of the ground.

The attached picture shows the post, and you can see the shadow being cast by the beam showing the "unplumbness" of the post.

oh'mike 06-17-2012 04:23 AM

That doesn't look to bad---does the post position cause your girder to be out of line?

Next time--use cast piers with metal fasteners--no buried post--

Posts buried in the earth will no longer pass inspection in this area----

COLDIRON 06-17-2012 06:14 AM

I never notch support columns I build on top of them and work my way up from there notching support posts weakens them. If your below the frost line and the post is secure enough not to move you'll probably be OK.

kwikfishron 06-17-2012 06:19 AM

It would have been pretty easy to correct before you poured, not much you can do about it now.

The deck isn’t going to fail because of it if that’s what your asking.

I’d be more concerned with how you have the ledger board attached directly to the siding. I cant tell from the picture if you have the board spaced off the wall or not. It doesn’t look like it but you should if you’re not going to cut the siding out and flash the ledger properly.

Joe Carola 06-17-2012 06:30 AM

Quote:

Originally Posted by sm424
Hello everyone, I'm in the middle of doing my first deck job, and I'm afraid I might have a problem on my hands. I'm extending out my existing deck 10'. Everything has gone great, but one of my posts are not very plumb. The reason for this is because I had a hell of a time digging the post holes. The ground over here is full of rocks. It seems that the auger drifted while I was digging. once I was done digging I realized that my holes were no longer perfectly aligned, but I thought I could get away with that. I Notched out my posts and rested the carry beam in the notch. I then added a 2x6 cleat to the face of the post/beam combo, and bolted all three together. However one post is leaning slightly back to align itself with the other post. The beam itself is level and straight. Before I added the concrete I brought a contractor friend to look at it, and he thought it was alright. I then buried both posts with concrete. I know burying posts is a controversy in itself, but I'm not worried about that now. All I want to know is if I have something to worry about with my unplumb post? I know what my friend said, but I would like some second opinions. The post is about 42" in the ground, and is about 24" out of the ground.

The attached picture shows the post, and you can see the shadow being cast by the beam showing the "unplumbness" of the post.

Can you give me one good reason why you would bury the posts in the ground?

And is the ledger nailed to the siding?

sm424 06-17-2012 09:06 AM

I don't have a good reason for why I buried the posts other than that's what I was told to do. In the future I don't plan on burying them. I built the whole thing kind of backwards. The outer joists and ledger board were not fully secured yet. The siding is now off and the Ledger is attached with 10 1/2" lag bolts.

Daniel Holzman 06-17-2012 09:43 AM

Your deck is not built in accordance with International Residential Code, and probably not in accordance with any other code. So I am assuming that you live in an area with no code requirements. Most people elect to build according to IRC guidelines even if they are not subject to code, because it provides a solid design framework, and if you follow IRC guidelines you will almost always be OK.

So for example, you cannot bury posts by IRC rules. Posts must by a minimum of 6x6 PT, supported on a galvanized metal bracket. Ledgers have very specific attachment details. Etc. So my suggestion is the next time you have a deck to build, you may want to consider downloading the IRC guidelines (free on the internet) and following them.

Regardless, you have already built it, and the fact that the post is a bit out of plumb is not a huge problem. The comments about the need for careful flashing of the ledger are spot on, the penetrations for the lag bolts can allow moisture to get behind the ledger and the siding and cause serious trouble.

hand drive 06-17-2012 09:51 AM

Quote:

Originally Posted by sm424 (Post 945256)
Hello everyone, I'm in the middle of doing my first deck job, and I'm afraid I might have a problem on my hands. I'm extending out my existing deck 10'. Everything has gone great, but one of my posts are not very plumb. The reason for this is because I had a hell of a time digging the post holes. The ground over here is full of rocks. It seems that the auger drifted while I was digging. once I was done digging I realized that my holes were no longer perfectly aligned, but I thought I could get away with that. I Notched out my posts and rested the carry beam in the notch. I then added a 2x6 cleat to the face of the post/beam combo, and bolted all three together. However one post is leaning slightly back to align itself with the other post. The beam itself is level and straight. Before I added the concrete I brought a contractor friend to look at it, and he thought it was alright. I then buried both posts with concrete. I know burying posts is a controversy in itself, but I'm not worried about that now. All I want to know is if I have something to worry about with my unplumb post? I know what my friend said, but I would like some second opinions. The post is about 42" in the ground, and is about 24" out of the ground.

The attached picture shows the post, and you can see the shadow being cast by the beam showing the "unplumbness" of the post.


Hi, may I ask, how out of plumb is the post for the part that sticks 24" out of the ground? it does not look bad at all in the pic. do you have 1/2" out of plumb or so?

Bonzai 06-17-2012 09:51 AM

What is the span from the side of the house to the edge of the deck? I assume the 10' was out from the old deck. I would be concerned in general that perhaps you need additional supports. Also the wonky post may start to twist and that corner of the deck may drop slightly as not only is it cantilevered out but the post already not being plumb the forces are going to want to in part twist the whole deck.
I take it you didn't get a permit ... This would fail inspection for many reasons here. Those posts will prematurely rot. Personally I would start over and do it right. The posts need to be elevated above the ground ... Here we pour the footings to 8" above the soil. When you buried the posts in concrete did you use sona tubes backfilled with gravel and then compact it down around the posts ... Reason I ask is if the soil is loose around the concrete embedded posts especially with all the bits of rock (may be lots of air pockets) then when it rains the wonky post may move.

It might well stay standing at least until the base of the posts rot out, but this is clearly not how a deck should be built. Now is your chance to do it right before you finish the framing, lay deck boards and build a railing.

Further ... Depending on height you may be able to get away with installing the posts on preformed concrete post blocks if you cut the existing ones off at the ground level ... Hope that made sense.

joecaption 06-17-2012 10:03 AM

It also looks like you used 2 X 6's not 2 X 8's, your going to get some bounce and sag over time.
Would have been far better to have built the deck as a free standing deck so there's 0 way the wall can get rotted out.

Did you at least put Storm and Ice shield of the wall under the ledger?

Bonzai 06-17-2012 10:06 AM

Quote:

Originally Posted by joecaption
It also looks like you used 2 X 6's not 2 X 8's, your going to get some bounce and sag over time.
Would have been far better to have built the deck as a free standing deck so there's 0 way the wall can get rotted out.

Did you at least put Storm and Ice shield of the wall under the ledger?

Ditto. I would be concerned the size of timber used is insufficient for the span.

Joe Carola 06-17-2012 10:19 AM

Quote:

Originally Posted by sm424
I don't have a good reason for why I buried the posts other than that's what I was told to do. In the future I don't plan on burying them. I built the whole thing kind of backwards. The outer joists and ledger board were not fully secured yet. The siding is now off and the Ledger is attached with 10 1/2" lag bolts.

Do you need permits and inspections where your from?

sm424 06-17-2012 10:35 AM

I'll confess to all my sins. First off I did not get a permit. This is my second home that I go to maybe 1 month out of the year. I don't host parties on the deck, and the entire extension is relatively small, and won't see that much action, so I thought I could get away with it. I did use 2x6s because that was what the old deck was built of, and it has so far lasted 25 years. The old deck is completely not in accordance with code. Posts are buried, ledger is attached to the house without any flashing, beams are bolted to the sides of 4x4 posts. Seeing all that I thought I can cut corners. Most of what I did I kept within code, I did install flashing and cut off the siding, I did use 6x6 posts, and I notched and bolted my posts to the beams. I feel kinda dump for not pouring normal footings now. I was afraid the J-Bolts were not gonna give me any play if my holes were misaligned ( which is how they did ended up), and my carry beam would have been sideways.The joists are going to be placed 12" apart, so I think my span is alright even with the weaker 2x6 lumber. Before i go further, would it make sense at this point to cut the posts at ground level and set down a pier? remember that under the pier would be a concrete/ post combo.

oh'mike 06-17-2012 06:41 PM

Keep it nice--both of you---

Your friendly neighborhood Moderator---Mike---

Joe Carola 06-17-2012 07:06 PM

Quote:

Originally Posted by oh'mike
Keep it nice--both of you---

Your friendly neighborhood Moderator---Mike---

I was being nice Mike. No reason to delete my post.

You should delete threads like this about people doing illegal work and no building to code and admitting it.


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