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Re: GSBN:Largest strawbale buildings?clapboard

Hi Kim,

Here in Denmark, Europe, where we've got our share of 0 degree days as
well, it is slowly becoming the done thing to clad the southern side
of the house, when it has a high wall for the sun-intake.

Our prevailing wind, as well as wind-driven rains, comes from the
west, but it is clearly the southern side that faces the biggest
challenge. Due to the influence of heating sun during the day, i


PS: I'd be happy to receive the pictures as well Kelly.

2007/2/3, kim thompson shipharbour@...:
Hi Kelly,

Horizontal clapboard over rough plastered bales has been a very
successful treatment for bale walls in Atlantic Canada for the last
10 years. There have been several different systems used, the one
Jeff describes (with wood framing) being amoung them. Our weather is
extremely hard on buildings with lots of wind driven rain and snow
and intense, quick freeze thaw cycles that are very hard on
plasters.... particularly plasters with cracks.

The clap board system has been used here on 12 residences of one and
two stories, but I can see no reason why it wouldn't work on three or
even four. I guess the question is what is available locally to
create the rain screen - I can imagine that wood might be at a premium.

Of note is that three (and I think there will be more over time)
owners have used this approach as a remediation strategy with
considerable success when it became apparent that their walls on
those particular (exposed)  sites couldn't stand up to the weather.

I can send you photos separately if you like.



Kim Thompson
Straw Bale Projects
2699 Northwood Terrace
Halifax, Nova Scotia B3K 5S9
tel. 902-453-2429
e mail: shipharbour@...

"Tradition and modernity are merely two sides of the same coin - and
must be dealt with simultaneously. Building cannot be a rigid dogma,
but a living, organic, ecological project. It is about continuity,
based on memory, common sense and experience and is the foundation of
invention."   Hasan Uddin Khan

On 2-Feb-07, at 4:56 PM, jeff wrote:

> Kelly,
> We recently completed a 30,000 sf horse arena with an attached
> residence
> that was mostly steel framed, with no overhangs.  We did not
> participate
> in the design process and the steel frame was already installed
> when we
> arrived.  We had to work with what we were given.
> The building is at 8000' and very exposed.  Due to the size of the
> structure the owner did not want to use earth or lime due to the
> maintenance expense of re-plastering regularly.  We used cement
> plaster
> and sealed it with solixane.  We installed gutters everywhere.  This
> info may of little use to you since your building is multi-stories and
> this one is one story for the most part.
> What I can tell you that may be of interest is I believe the expansion
> and contraction of the steel frame is much more significant that wood
> and the integration of the bale walls is a stiff element in between
> the
> members.  We did not do a wrap, but more of a conventional approach,
> placing bales between the posts.  I am noticing a few more cracks
> than i
> have on other projects and I believe it is because the frame is
> expanding and contracting.  I don't think it is due to wind because
> the
> frame is very stout and in my opinion, over-designed.  Also, the
> cracks
> are spread out and not shear in location and direction.  We installed
> vertical expansion joints every 20 feet on the entire building.
> One thing we did do that I found to work really well was to install
> siding over the bale walls on the second story of the residence - the
> only part of the project that was over one story.  We installed
> nailers
> and plastered one coat between them and then installed old barn wood
> siding as a rain screen.  In my opinion, this saved time and will
> almost
> guarantee that moisture will never hit the bales.  There is paper
> behind
> the siding and a gap behind the paper.  Not only did it save time,
> but I
> believe it saved money.  Stucco being $6/sf and siding being $3/sf for
> the materials and labor is faster than plaster, we did well choosing
> this method.    I have attached a picture of the finished residence
> portion.
> I have been working on a webpage for this project but I don't have
> it up
> yet.  Look for it in a couple weeks.
> We have not done any energy related stuff.  In fact, 90% of the
> area is
> not conditioned.
> Cost for the steel structure and bale walls finished was around
> $2,000,000.  This included a 2500 sf residence.  The rest is a wide
> open
> horse arena.
> The project is located near Carbondale, CO
> Completed Nov 2006.
> Owner-designed with us as de facto engineers.
> We were the builder.
> Good luck,
> --
> Jeff Ruppert, P.E.
> Principal
> Odisea LLC
> Engineering and Consulting
> Front Range Office            West Slope Office
> 1731 15th St. #105            209 Clark Ave.
> Boulder, CO  80302            Paonia, CO 81428
> 303.443.4335                  970.948.5744
> 303.443.4355 f                        1.866.795.6699 f
> jeff@...
> www.odiseanet.com

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