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GSBN: Digest for 10/6/07

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-> Re: GSBN:Re: Strawbale walling query
     by Joyce Coppinger jc10508@...


Date: 6 Oct 2007 17:34:24 -0500
From: Joyce Coppinger jc10508@...
Subject: Re: GSBN:Re: Strawbale walling query

There is a straw-bale building in Nebraska (40x80 if I remember correctly)
where the bales are used as infill (not loadbearing) and they wrapped around
the outside of the posts without being tied to the poles. The bale walls sit
about four inches away from the posts. The building was constructed in
1997-8 in the northeast corner of the state (gets plenty of rain and snow
and high winds). There are 28 posts (from red cedar trees felled nearby) in
this building - most around the perimeter but some for structural support of
the loft and rafters.

The bales are tied together with rebar pounded into the center at two points
within each bale, staggered up through three courses (see The Straw Bale
House by Steen, Steen et al). The building is coated with cement stucco
which is troweled over chicken wire pinned to the bales.

A rainscreen would probably be a good idea for the climate you describe.

- -------
Joyce Coppinger, Managing Editor
The Last Straw journal
GPFS/TLS, PO Box 22706, Lincoln NE 68542-2706 USA
402.483.5135, fax 402.483.5161

on 10.4.2007 12:06 PM, Tom Woolley at woolley.tom@...:

> I had a meeting today with a young Belfast architect, Siobhan Brown,
> who is designing a strawbale house for a self builder in County
> Fermanagh ~Northern Ireland
> I don't think Siobhan has much experience of SB but she has had a
> good go at the design mainly based on details in a book by Chris Magwood
> The client wants to built a post and beam structure for the house and
> then wrap the strawbale walls around the outside of the posts.
> She was not proposing to tie the walls into the posts as she says
> that Magwood's details do not show this.
> She was planing to tie the wall plate to the rafters of the roof. The
> house is single storey but with rooms in the loft. so the floor
> joists for the upper floor will be part of the roof structure.
> I have misgivings about this . I wonder if anyone has built a
> strawbale house where the bale walls are not load bearing and are
> wrapped around the outside of the structural posts without being tied
> into them? The posts will be about 4 metres apart.
> Fermanagh has to have 100% humidity all year round with a lot of
> heavy winds and driving rain. If you stand still for 5 minutes moss
> will grow on your head.  I also think the walls will need a rain screen
> I would have thought a more solid structure would involve placing
> sections of bale walls between the posts and being tied into them
> Any useful comments and I will pass them onto Siobhan
> thanks
> Tom Woolley
> woolley.tom@...
> Rachel Bevan Architects
> 17A Main Street
> Saintfield
> Ballynahinch
> County Down
> BT24 7AA
> 028 97 512851
> also:
> Graduate School of the Environment
> Centre for Alternative Technology
> Unit 7, Dyfi Eco Parc
> Machynlleth
> Powys, SY208AX
> 01654 703562
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