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Posted by Jeff D. on June 10, 2008, 8:15 am
I have a detached garage addition, I'd like to add a non-load bearing
interior wall, 12' long across a 20' width, with the top wall plate
perpendicular to the trusses. The addition is insulated to recommended
R-value for a northern Indiana climate and the slab has a thermal break on
the exterior footing walls.
I'm concerned if slab movement will cause cracking in the drywall ceiling if
I make the new wall a tight fit between the slab and the drywall ceiling.
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Posted by TonyG on June 10, 2008, 8:33 am
Jeff D. wrote:
> I have a detached garage addition, I'd like to add a non-load bearing
> interior wall, 12' long across a 20' width, with the top wall plate
> perpendicular to the trusses. The addition is insulated to recommended
> R-value for a northern Indiana climate and the slab has a thermal break on
> the exterior footing walls.
>
> I'm concerned if slab movement will cause cracking in the drywall ceiling if
> I make the new wall a tight fit between the slab and the drywall ceiling.
>
>
>
>
Here is a trick I learned from a fellow who built in a cold climate. Use
two bottom plates and keep them spread apart by 1/2" or so and don't
nail the drywall to the one that sits on the floor. If the floor moves
up or down the drywall will not be affected.I have not done this myself
but he said it worked. Good luck. TonyG
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Posted by S. Barker on June 11, 2008, 9:00 am
If the interior is heated and the slab does not freeze, i'd say you'll be
ok.
s
>I have a detached garage addition, I'd like to add a non-load bearing
>interior wall, 12' long across a 20' width, with the top wall plate
>perpendicular to the trusses. The addition is insulated to recommended
>R-value for a northern Indiana climate and the slab has a thermal break on
>the exterior footing walls.
>
> I'm concerned if slab movement will cause cracking in the drywall ceiling
> if I make the new wall a tight fit between the slab and the drywall
> ceiling.
>
>
>
>
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Posted by Mike Paulsen on June 11, 2008, 8:59 pm
S. Barker wrote:
> If the interior is heated and the slab does not freeze, i'd say you'll be
> ok.
>
Even if frost heave isn't an issue, expansive soil may be.
>> I have a detached garage addition, I'd like to add a non-load bearing
>> interior wall, 12' long across a 20' width, with the top wall plate
>> perpendicular to the trusses. The addition is insulated to recommended
>> R-value for a northern Indiana climate and the slab has a thermal break on
>> the exterior footing walls.
>>
>> I'm concerned if slab movement will cause cracking in the drywall ceiling
>> if I make the new wall a tight fit between the slab and the drywall
>> ceiling.
>>
Search for "expansive soil" and "floating wall". Whether and how to
build a floating wall will likely depend on the specifics of your
situation. (soil type, garage construction details, intended use, etc.)
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Posted by Edward Hennessey on June 12, 2008, 2:54 am
Jeff D. wrote:
> I have a detached garage addition, I'd like to add a non-load bearing
> interior wall, 12' long across a 20' width, with the top wall plate
> perpendicular to the trusses. The addition is insulated to recommended
> R-value for a northern Indiana climate and the slab has a thermal
> break on the exterior footing walls.
>
> I'm concerned if slab movement will cause cracking in the drywall
> ceiling if I make the new wall a tight fit between the slab and the
> drywall ceiling.
JD:
I'd call your area building agency and see if historical reason exists for
you
to worry and to learn what the common approaches to resolution of the
problem
are should there be one. If this is not going to be a bootleg operation,
you
are going to satisfy their requirements anyway.
Should you have irrepressible fear of damage from heave, expansion or
the first instance of a temblor in your area, there are several novel ways
a person could avoid your worry and still build a wall that was stable by
the
use of an innovative floating attachment to the ceiling but getting them by
code would likely either be difficult or require an expensive engineering
argument.
Regards,
Edward Hennessey
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