[GSBN] your preferred strapping tool?

[Brian]

Hi John,

We have been also been using a woven strap for many years. The only
challenge we have had is that on one occasion the buckles were sub-standard
and unraveled with the pressure of the compression. We are consistently
getting about 7% compression with good bales using the woven strapping. We
also use a standard tensioning tool that the timber industry would use for
strapping timber. The polyester strapping has a 1,1000 kg breaking strain.
As Chris has said, ensure that you use a woven strap, as the manufacturers
of other strapping advise you not to tension their straps more than once. We
tension our straps 3 times to get the 7% compression. We have a timber
structure above and below the bales as per normal, and envelop this timber
and the bales with the strapping. We use a buckle on each side of the wall
to ensure  that we do not get twist the top timber during compression. The
product is called narrow strap by Narrow Tex who I understand have
distributors I the USA. It may well be the same strap that Chris is speaking
of. The Narrow Strap product is either white with 2 red lines down its
length or bright orange, which is the one we use. We compress to tension and
then pack the top boxing to a level line for pitching the roof off.

 

I trust this is of some benefit.

 

Regards

Brian

Anvill 

Straw Building Consultants 

 

From: GSBN-bounces at greenbuilder.com [mailto:GSBN-bounces at greenbuilder.com]
On Behalf Of John Swearingen
Sent: Friday, 9 October 2009 3:19 AM
To: (private, with public archives) Global Straw Building Network
Subject: Re: [GSBN] your preferred strapping tool?

 

We don't pack..er, strap.  We just wedge 'em under the box beam, VERY
tightly.

John

On Wed, Oct 7, 2009 at 1:42 PM, <cmagwood at kos.net> wrote:

We use a 3/4 inch woven banding material that comes from
Canada Wide Packaging, but is readily available anywhere
that does packaging supplies.

The tool is about $100, the strapping is $40 for a huge
roll and the D-buckles are 500 for $25.

Avoid at all costs nylon banding materials that aren't
woven. They fray easily and are very frustrating. Also
avoid systems that clamp the strapping in order to finish,
as you won't be able to readjust. Ours came with a cutter
that we disabled so the tail would be left to reattach
later.

Chris


> Do you use a strapping tool for compression of loadbearing
> strawbale
> walls?  I am seeking suggestions and guidance on vendors,
> brands, makes
> and models of strapping tool that strawbale builders have
> found useful.
> I am working in the southwestern United States.  The
> immediate project
> is a 24' x 24' utility building, scheduled to be built in
> a workshop in
> Las Cruces, NM, next month.
>
> Thanks for your help,
>
> Derelict
>
> Derek Roff
> Language Learning Center
> Ortega Hall 129, MSC03-2100
> University of New Mexico
> Albuquerque, NM 87131-0001
> 505/277-7368, fax 505/277-3885
> Internet: derek at unm.edu
>
> _______________________________________________
> GSBN mailing list
> GSBN at greenbuilder.com
> http://greenbuilder.com/mailman/listinfo/GSBN
>

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-- 
John Swearingen
www.skillful-means.com
blog: https://skillfulmeansdesign.wordpress.com

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