[GSBN] Straw bale lambda

[Luc Floissac]

Hello.
The German certificates (see here attached the german and french version 
of theses documents) indicates a value of:
lambda = 0.052 perpendicularly to straw fibbers direction
lambda = 0.080 in straw fibbers direction,

Regards.
Luc Floissac (RFCP - France)

Graeme North a écrit :
> the conversion I have used is that R value (imperial) ft2*degF/Btu = 
> 5.86 X R value (metric) in m2 *degC/W for the same thickness of 
> material - an easy way of converting R values from imperial top metric 
> to another for the same construction - it also helps 
> demolish extravagant insulation  claims made for some 
> american materials when proponents have not done the conversion.
>
>
>
> 10.05 * 5.86 / 39.37 inches/m = 1.49 so its close
>
>
>    
> Graeme
> Graeme North Architects
> 49 Matthew Road
> RD1
> Warkworth
> tel/fax +64 (0)9 4259305
>  
> graeme at ecodesign.co.nz <mailto:graeme at ecodesign.co.nz>
> www.ecodesign.co.nz
>
>
> On 16/06/2009, at 3:48 AM, contact at lamaisonenpaille.com 
> <mailto:contact at lamaisonenpaille.com> wrote:
>
>> Hello,
>>
>> For the purpose of publishing Bruce Kings book "Design of SB 
>> Buildings" in french I would appreciate someone from this list 
>> confirming Rob Tom's conversion below (for page 187):
>>> A thermal resistivity of 1.45 ft^2*hr*degF/Btu*inch (Murrican)
>>> converts to 10.05 m^2*degC/W*m (SIU).
>>>
>>> The thermal conductivity, or lambda value = 1 / thermal resistivity
>>>                                           = 1 / 10.05  m^2*degC/W*m
>>>                                           = 0.0994 W/mK  lambda (λ)
>>
>> Thanks,
>>
>> André de Bouter
>> La Maison en Paille
>> www.lamaisonenpaille.com
>>
>>
>>
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>
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