Replace a 4 x 4 in a concrete patio

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Old 08-02-16, 05:11 PM
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Replace a 4 x 4 in a concrete patio

Our concrete patio has a 4x4 embedded within it, and the bottom of the 4x4 has rotted and is quite wobbly (slightly below the surface of the patio). Is there any clever way to replace the 4x4 without having to make a big hole in the concrete? Thanks.
 
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Old 08-02-16, 05:50 PM
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What does the 4x4 extend to? A deck? No wood should be embedded in concrete that provides support to things like decks. Maybe you could post a picture or two showing this problem so we can see what you see. http://www.doityourself.com/forum/el...your-post.html
 
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Old 08-02-16, 07:50 PM
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I've replaced several rotted-out wooden stubs over the years. All it takes are knees that bend, a decent pair of knee pads, a heavy-duty electric drill with long bits, a set of "beater" chisels with a short-handled maul, and a long handled set of Chanel-lock pliers to pull the bits and pieces out of the hole. Oh, and don't forget the work gloves, to avoid skinned knuckles.
 
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Old 08-02-16, 09:21 PM
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So you just chisel out the old wood?

So you just chisel out the old wood and you can slide the new 4 x 4 into that hole? How deep can you go doing it that way?

The 4x4 supports one of the side walls of an open shed (there is no wall on the front). This wall doesn't touch the other walls or the roof, so basically the 4x4 just helps keep up that section of the wall.
 
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Old 08-03-16, 03:59 AM
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Did you forget the pictures? There may be other solutions, but we can't see what you see.
 
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Old 08-03-16, 04:49 AM
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I'd be inclined to chisel out the post, fill the hole with concrete and install a post bracket into the wet concrete. Don't forget the temporary supports! Pics would be nice!
 
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Old 08-03-16, 12:06 PM
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Going with marksr's idea would be best for several reasons: it would give you a chance to place a deeper "footing" for supporting the post, and there would be little or no chance of your new post to rot out (as it would be resting on a raised, galvanized steel support bracket).
 
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Old 08-07-16, 10:09 AM
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Here's the photo

Yeah, I was lazy and didn't post the photo. Here it is:

Name:  IMG_0216.jpg
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The red arrow show the rotted-out 4x4. It doesn't support anything except that side wall. I like the idea of the post bracket - seems simpler than trying to cram a new 4x4 down the old hole. I presume you mean something like this?

http://www.landscaping-diy.com/image...racket%205.gif
 
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Old 08-07-16, 10:52 AM
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There are several different kinds but that one will work. The main thing is for the bracket to be anchored to the slab and hold the 4x4 slightly above the concrete so it's less likely to wick up moisture.
 
 

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