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Framing on Slab - Out of Square

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Framing on Slab - Out of Square Hambone 03-09-2007
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Posted by Glenn on March 10, 2007, 11:46 am
How close to the ground is this plate that is hanging over?
Subject to splash? I can assume it's CCA or whatever they call it
nowadays.


> We have just started framing on our home and the framer
> indicates the slab is not square on the corners. Not too bad,
> but still 1.5" out of square in 2 places. The framer has the
> bottom plate (2x4) hanging off the slab in a few places. He
> doesn't seem too worried .... should I be?
>
> Is this common or just shoddy work on the concrete crew? Any
> recommendations on what to do ... or let me know if this is
> normal course and I should do nothing.
>
> Thanks.


Posted by Hambone on March 10, 2007, 4:56 pm
Thanks for all the posts so far ... a bit more information for those
that are asking:

- I am the homeowner and the general contractor

- The place in question with the plate sticking out is well off the
ground (say 10") and water getting in or under the bottom plate
shouldn't be an issue - there will be a stone wall on the exterior - so
no one will notice from the outside. From the inside of this garage
wall, that wall sits on a 6" curb - so its quite obvious from the inside
of the garage, but I am not worried about cosmetics in the garage.

- The exterior wall just went up Friday, so its not too late to change
it - I am going to go out and measure again. I like the idea of the 2x6
on this wall if needed to get more "meat" on the slab.

- This wall is supporting a 2 story structure on a pretty flat lot in NE
Oklahoma.

- As far as the 1" deep puddle in the garage - its not too noticeable
when not full of water. The concrete guy indicates he can rough up the
area and patch it, but with the car traffic going over it - I am not
confident it won't crack in the future.

- The concrete guy is a reputable company and *normally* does good work.
I have seen some of his work and family members have used him
prevously...so I *think* these 2 issues were a bit sloppy, but the job
as a whole I think has been excellent.

Thanks agaiin -

Hambone wrote:
> We have just started framing on our home and the framer indicates the
> slab is not square on the corners. Not too bad, but still 1.5" out of
> square in 2 places. The framer has the bottom plate (2x4) hanging off
> the slab in a few places. He doesn't seem too worried .... should I be?
>
> Is this common or just shoddy work on the concrete crew? Any
> recommendations on what to do ... or let me know if this is normal
> course and I should do nothing.
>
> Thanks.

Posted by Noncompliant on March 11, 2007, 8:01 am
Slab shouldn't vary more than 1/8" at the horizontal. Some opt for some
rise beginning from the garage door entry. A 1" deep puddle is poor
workmanship either way.

--
Noncompliant

Money don't wag the dog's tail.

> Thanks for all the posts so far ... a bit more information for those that
> are asking:
>
> - I am the homeowner and the general contractor
>
> - The place in question with the plate sticking out is well off the ground
> (say 10") and water getting in or under the bottom plate shouldn't be an
> issue - there will be a stone wall on the exterior - so no one will notice
> from the outside. From the inside of this garage wall, that wall sits on
> a 6" curb - so its quite obvious from the inside of the garage, but I am
> not worried about cosmetics in the garage.
>
> - The exterior wall just went up Friday, so its not too late to change
> it - I am going to go out and measure again. I like the idea of the 2x6
> on this wall if needed to get more "meat" on the slab.
>
> - This wall is supporting a 2 story structure on a pretty flat lot in NE
> Oklahoma.
>
> - As far as the 1" deep puddle in the garage - its not too noticeable when
> not full of water. The concrete guy indicates he can rough up the area
> and patch it, but with the car traffic going over it - I am not confident
> it won't crack in the future.
>
> - The concrete guy is a reputable company and *normally* does good work. I
> have seen some of his work and family members have used him prevously...so
> I *think* these 2 issues were a bit sloppy, but the job as a whole I think
> has been excellent.
>
> Thanks agaiin -
>
> Hambone wrote:
>> We have just started framing on our home and the framer indicates the
>> slab is not square on the corners. Not too bad, but still 1.5" out of
>> square in 2 places. The framer has the bottom plate (2x4) hanging off
>> the slab in a few places. He doesn't seem too worried .... should I be?
>>
>> Is this common or just shoddy work on the concrete crew? Any
>> recommendations on what to do ... or let me know if this is normal course
>> and I should do nothing.
>>
>> Thanks.



Posted by Andy Asberry on March 10, 2007, 8:06 pm
wrote:

>We have just started framing on our home and the framer indicates the
>slab is not square on the corners. Not too bad, but still 1.5" out of
>square in 2 places. The framer has the bottom plate (2x4) hanging off
>the slab in a few places. He doesn't seem too worried .... should I be?
>
>Is this common or just shoddy work on the concrete crew? Any
>recommendations on what to do ... or let me know if this is normal
>course and I should do nothing.
>
>Thanks.

I would check plumbing penetrations to make sure they weren't moved
during the pour.

--Andy Asberry--
------Texas-----

Posted by LightsAREon on March 10, 2007, 9:16 pm
Andy Asberry wrote:
> wrote:
>
>> We have just started framing on our home and the framer indicates the
>> slab is not square on the corners. Not too bad, but still 1.5" out of
>> square in 2 places. The framer has the bottom plate (2x4) hanging off
>> the slab in a few places. He doesn't seem too worried .... should I be?
>>
>> Is this common or just shoddy work on the concrete crew? Any
>> recommendations on what to do ... or let me know if this is normal
>> course and I should do nothing.
>>
>> Thanks.
>
> I would check plumbing penetrations to make sure they weren't moved
> during the pour.
>
> --Andy Asberry--
> ------Texas-----
Bearing walls on homes are at the perimeter of the concrete. The
easiest way to tell if this is a bearing wall is the look at the roof
(on the plans if the roof hasn't been built yet). If the slope of the
roof comes down on the wall that is hanging over, then it's a bearing
wall. 1.5" isn't bad and, structurally speaking, it's not something to
be worried about but watch what the framers are doing. By the way, make
sure the bottom plates (sill plates) are pressure treated and strapped
AND bolted down. It's code (IBC 2003).

Also, watch the siding in the location where it hangs over. This is and
exposed area of framing that can easily become an access point for mice
and bugs. The pressure treating may kill a mouse but only after several
days. A lot of chewing could be done in that amount of time. A good
pest control service agreement should also help.

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