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aibrean 05-27-2009 01:36 AM

Need advice on basement support column problem
 
3 Attachment(s)
I have a vertical support column in the basement that looks like it was originally set in the wrong spot. It supports two beams that come together at a right angle. It is "centered" underneath one of the beams (which is about 3 ft from the masonry block / foundation wall), however it's about 2" off of center under the other (which is about 7 ft from the foundation wall) which has caused it to split. Please take a look at the pictures, can anyone offer advice on a fix for this?
The house is approx 100 yrs old, and I have no idea how long this support has been in place like this.

The column is sitting on a concrete base that is about 1" tall and looks like it is part of the slab.

Any suggestions on a fix?

VaViaCo 05-27-2009 05:15 AM

Get a steel adjustable posts and put it under the unsupported part.

This should really sit on a "pad", which is a thicker spot of concrete, but I'd just set it on your floor.
They are adjustable but get one close to the height you need.

If the floor has held on that cracked beam, the weight of it won't push the concrete floor down.

Just don't put a baby grand piano in the room right above here.

Just Bill 05-27-2009 06:16 AM

You could add another post, but you would have to dig for another footer. Using an adjustable column without proper support is useless, it will crack the floor. And adjustable columns are hollow and intended for temporary use only. Or, you add a knee to the existing post, bolted thru the existing, maybe 1/3 the length of the existing post.

Aggie67 05-27-2009 11:38 AM

I'd look into a small gusseted knee brace made out of steel. If it were my beam, I'd also look into stabilizing the crack with lag bolts. And I'd take the weight of that damaged beam off of the column before I did either of those steps.

If you're in NJ, I could look at it for you.

joed 05-27-2009 12:04 PM

Don't use lag bolts. Use through bolts with nuts and washer. Add a second post right beside the existing one. The footer under the existing post is likely large enough for an addtional post.

Gary in WA 05-27-2009 01:55 PM

I agree with Aggie67. You don't know the thickness of slab or how far below the footing is from it. Or if your post is on the edge of the footing now.

I would get some hangers under the notched joists and bearing for the cut floor 2x6?.

Or see if one of these will work:

http://www.strongtie.com/products/co...CL-CCC-CCT.asp Be safe, G

walkman 06-01-2009 02:24 PM

Is this what the other posts in the basement look like? That is, is it original and likely has a proper footer, or something that was added later without a proper footing? Or was the original post taken out by someone before they realized it was needed and replaced with a wooden post?

Maintenance 6 06-02-2009 07:21 AM

I agree that the post appears to be in the wrong place. I also think that it's been there a long time and if it hasn't cracked the concrete that it bears on, then why worry about it? If it's not in the way, I would leave it alone and bolt a 4x6 post next to it the full height. Cut it so it fits snug and bolt it to the existing post in the proper postion to catch the beam as it should. Then I would through bolt the broken corner of the beam with some 1/2" threaded rod, washers and nuts. After that, I wouldn't even be afraid to put my piano on top of it.

VaViaCo 06-08-2009 12:21 PM

B. S. Bill
 
Adjustable steel posts are not temporary and will support the whole beam forever.

We have used hundreds.

Gary in WA 06-08-2009 04:29 PM

Quote:

Originally Posted by VaViaCo (Post 279101)
Get a steel adjustable posts and put it under the unsupported part.

This should really sit on a "pad", which is a thicker spot of concrete, but I'd just set it on your floor.
They are adjustable but get one close to the height you need.

If the floor has held on that cracked beam, the weight of it won't push the concrete floor down.

Just don't put a baby grand piano in the room right above here.


As you can see, the post is sitting on the top of a pier, which they poured a slab around. Same as the furnace. Be safe, G


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