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Extending existing wall studs

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Extending existing wall studs sw 02-21-2007
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Posted by sw on February 21, 2007, 2:07 pm
I am working on completing drawings for a home in the east end of
Toronto. I am showing the existing roof being taken off to facilitate
adding a second floor. The existing wood stud walls must be extended
to satisfy an owner request for additional headroom.

Does anyone have a suggestion, or can refer me to a previous post
where wall studs are extended up, or a short stud wall is added and
securely attached to the lower stud wall without having to replace the
existing wall studs?

Thankyou in advance.

Scott.


Posted by Michael Bulatovich on February 21, 2007, 2:12 pm
>I am working on completing drawings for a home in the east end of
> Toronto. I am showing the existing roof being taken off to facilitate
> adding a second floor. The existing wood stud walls must be extended
> to satisfy an owner request for additional headroom.
>
> Does anyone have a suggestion, or can refer me to a previous post
> where wall studs are extended up, or a short stud wall is added and
> securely attached to the lower stud wall without having to replace the
> existing wall studs?
>
> Thankyou in advance.
>
> Scott.

Aren't you working with an engineer?
--


MichaelB
www.michaelbulatovich.ca



Posted by Bob Morrison on February 21, 2007, 7:35 pm
In a previous post sw wrote...
> Does anyone have a suggestion, or can refer me to a previous post
> where wall studs are extended up, or a short stud wall is added and
> securely attached to the lower stud wall without having to replace the
> existing wall studs?
>

Don't mess with it. If this is platform framing then remove the studs to
the second floor and install new ones.

Otherwise, contact a local engineer for advice.

--
Bob Morrison, PE, SE
R L Morrison Engineering Co.
Structural & Civil Engineering
Poulsbo WA
bob at rlmorrisonengr dot com

Posted by M&S on February 21, 2007, 8:00 pm
Bob Morrison wrote:
> In a previous post sw wrote...
>
>>Does anyone have a suggestion, or can refer me to a previous post
>>where wall studs are extended up, or a short stud wall is added and
>>securely attached to the lower stud wall without having to replace the
>>existing wall studs?
>>
>
>
> Don't mess with it. If this is platform framing then remove the studs to
> the second floor and install new ones.
>
> Otherwise, contact a local engineer for advice.
>

A healthy bead of wood glue and some perforated plumbers tape screwed
across the stud/plate connections wouldnt suffice?

Mark


Posted by HerHusband on February 22, 2007, 11:01 am
> I am working on completing drawings for a home in the east end of
> Toronto. I am showing the existing roof being taken off to facilitate
> adding a second floor. The existing wood stud walls must be extended
> to satisfy an owner request for additional headroom.

In most cases, framing one wall directly on top of the other would create a
pivot point. It would act sort of like a large hinge. Strong winds or
seismic forces could easily cause the wall to bend (and possibly fail) at
the point where the two walls meet.

If this wall extends unsupported from the first floor to the second, you
should tear it out and reframe with continuous studs. Then add fireblocking
every 8' or so in the studbays.

If you can't remove the existing wall for some reason, you could probably
sister full height studs next to the existing shorter studs. But, that's
probably more work than just reframing the wall.

Anthony

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