[Greenbuilding] Advanced framing/OVE / 100 years from now

[John Salmen]

With stud framed buildings I use an engineer in the design process to
determine which walls need to act as shear walls - typically corners, some
midsection and perhaps an interior wall. Foundation anchors are set in
specifically for the shear wall design and a 2x4 shear wall with 1/2" ply on
the interior is built (these typically work on 24" centres with an
engineered nail pattern). The balance of walls are basically non structural,
framed at 24" o.c. 

I have 3.5" thick eps foam factory cut 22.5"x96"  and pressure fit between
studs with gaps foam filled. The foam adds a lot of stiffness but is not
used in the eng. - some redundancy in the structure.

The exterior is wrapped in 2" eps foam with a 1/2" batten over to provide a
pressure gap and nailer for exterior finish. 

I like this wall system because the basic structure is provided by specific
walls that can't be compromised in the future. All materials are available
for reuse, a minimum of materials are used with good structural redundancy.
Also since the basic design and details are engineered there is no issue
with carpenter debates or concerns with liablilty. Also the structure is
eng. To comply with our seismic codes. Shear walls are typically
prefabricated on the ground or in a shop. (basic 2x4 w/ ply and polyfoam
glue).

The extra engineering comes at a cost but not much as shear wall design is
so basic - and it provides an owner with a good sense of confidence in the
structure.

JOHN SALMEN ENVIRONMENTAL DESIGN
4465 UPHILL RD,. DUNCAN, B.C.  CANADA, V9L 6M7
PH 250 748 7672 FAX 250 748 7612 CELL 250 246 8541
terrain at shaw.ca

-----Original Message-----
From: greenbuilding-bounces at listserv.repp.org
[mailto:greenbuilding-bounces at listserv.repp.org] On Behalf Of RONALD CASCIO
Sent: March 5, 2007 9:03 AM
To: Alan Abrams; 'William Updike'
Cc: greenbuilding at listserv.repp.org
Subject: Re: [Greenbuilding] Advanced framing/OVE / 100 years from now

Alan,
  Regarding glueing the sheathing to the studs.... living here in a coastal 
hurricane zone we are trying to see that a premature salvage need not occur 
due to storm damage. I'm all for reuse of building material were appropriate

but not before the structure has provided a many years of service to it's 
long list of owners and the community, and I believe that glueing the 
seathing to the frame will work to see that this can happen.
  We have had to deconstruct at times and boy is has been difficult, but we 
have been easy on ourselves with the language. ;-)

Ron

----- Original Message ----- 
From: "Alan Abrams" <alan at abramsdesignbuild.com>
To: "'William Updike'" <updikew at yahoo.com>; "'RONALD CASCIO'" 
<roncascio at verizon.net>
Cc: <greenbuilding at listserv.repp.org>
Sent: Monday, March 05, 2007 11:26 AM
Subject: Advanced framing/OVE / 100 years from now


> Mime-Version: 1.0
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>
> <Titebond also sells a line of solvent-free, low-VOC
> adhesives.  And OSI is coming out with their Green
> Series low-VOC line in April.  I think those might
> even be lower-VOC than the PL.  None of these work in
> the winter of course.>
>
> one thing that gives me pause when we use sprayed in place foam insulation
> is the recyclability of the studs, joists, and rafters when it's time to
> deconstruct the building.
>
> The same would hold true for adhering sheathing to the studs; it's hard to
> imagine salvaging osb two or three generations from now, but the studs 
> might
> be ok.  imagine the language the poor so-and-sos trying to chop them loose
> would be using...
>
> -AA
>
>
>
>
> -- 
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.5.446 / Virus Database: 268.18.7/711 - Release Date: 3/5/2007 
> 9:41 AM
>
> 


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