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Old 11-16-2009, 10:44 PM   #1
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How to make an existing 4 x 4 longer


What would someone recommend to extend the length of an existing 4 x 4 that is cannot be replaced?

Situation: A friend of ours just had a new post frame building installed. The building will be used as a horse stalling barn. The 4 x 4's that they cemented into the ground ended up not being long enough for the stalls. Is there a way to add an extra 1-2 feet without major issues? The only thing the 4 X 4 addition would be holding would be a 75 pound stall door. If anyone has a suggestion please let me know.

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Old 11-17-2009, 05:30 AM   #2
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How to make an existing 4 x 4 longer


Cut half the existing post lengthwise about 12" and the same for the extension piece. ( a lap joint) then bolt and glue the two pieces together. The plane of the joint should not be on the side of the gate hardware.

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Old 11-17-2009, 06:05 AM   #3
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How to make an existing 4 x 4 longer


Look in big box home centers for metal connector pieces in the section where the joist hangers are you might be surprised.
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Old 11-17-2009, 08:59 AM   #4
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How to make an existing 4 x 4 longer


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Originally Posted by SULTINI View Post
Look in big box home centers for metal connector pieces in the section where the joist hangers are you might be surprised.
Are you suggesting a butt extension with the use of a connector?
Ron
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Old 11-17-2009, 09:28 AM   #5
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How to make an existing 4 x 4 longer


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Originally Posted by mbell View Post
What would someone recommend to extend the length of an existing 4 x 4 that is cannot be replaced?
If it's only being compressed it should be easy. If it's in bending or tension the splice would have to be pretty strong.
Can you post a photo?
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Old 11-17-2009, 11:09 AM   #6
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How to make an existing 4 x 4 longer


Post #5 explains what I was thinking of.
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Old 11-17-2009, 12:48 PM   #7
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How to make an existing 4 x 4 longer


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Originally Posted by SULTINI View Post
Post #5 explains what I was thinking of.
The poster wants to hang a 75 lb door on this extended 4 x 4.
Ron
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Old 11-17-2009, 01:23 PM   #8
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How to make an existing 4 x 4 longer


Is your friend getting a permit for this? I don't know if cementing the posts into the ground is an accepted thing or not, but I would not build it that way, that will rot over time. I would cut off every post flush to the concrete and install some metal post bases, the kind that lifts the post about an inch off the ground, that will help protect it from rot. Then buy new posts and install them at the correct length. You'd need some diagonals too for shear, I would probably re-use the posts that I cut off for that.

If you want to splice it, I guess you can, but the only way I can see doing that is if you sister new posts to the existing ones. Then put some flat metal clips about every foot along the two posts. But that would look funny, and you'd still have the problem of your posts rotting.
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Old 11-17-2009, 02:18 PM   #9
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How to make an existing 4 x 4 longer


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Originally Posted by Ron6519 View Post
The poster wants to hang a 75 lb door on this extended 4 x 4.
Ron
With a 6' wide door there will be 225 ft-lbs of torque on the base of this vertical 4'x4' member. With a splice there would be a horizontal force trying to twist or shear the splice off the top of the existing post.
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Old 12-26-2009, 01:55 AM   #10
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How to make an existing 4 x 4 longer


Ask your neighbors if they have a board stretcher! lol
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Old 12-26-2009, 07:16 AM   #11
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How to make an existing 4 x 4 longer


I asked my neighbors if they had one that I had a 4 X 4 that was 1/2 " short none of them owned one .
I would like to purchase one if they are not to much because I only have one to stretch, I would hate to put put out to much money and just use it once.
Please tell me where to purchase and a estimated price. Thanks in advance.
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Old 12-26-2009, 07:40 AM   #12
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How to make an existing 4 x 4 longer


They have them at HD and Lowes next to the left handed monkey wrenches and sky hooks
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Old 12-26-2009, 08:24 AM   #13
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They have them at HD and Lowes next to the left handed monkey wrenches and sky hooks
Thanks Bob I will check it out as soon as I get out there.

Do you know if they have left handed screw drivers ? I need one of them 2.
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Old 12-26-2009, 08:54 AM   #14
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How to make an existing 4 x 4 longer


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Thanks Bob I will check it out as soon as I get out there.

Do you know if they have left handed screw drivers ? I need one of them 2.
Forgive me. this was only a joke. A post stretcher and the other tools I mentioned are only myths that we send union apprentices to find.
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Old 12-26-2009, 09:02 AM   #15
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How to make an existing 4 x 4 longer


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Forgive me. this was only a joke. A post stretcher and the other tools I mentioned are only myths that we send union apprentices to find.
I forgive you Bob, please forgive me for having a little fun. I was just kidding the whole time. Happy Holidays.

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