[Strawbale] CO2 production for building a house

[Sven Aerts]

Geachte Gort,

bedankt voor je antwoord ... zou Petten dat antwoord niet hebben?
Kan je daar iemand binnen de juiste cel's email opzoeken?

Dat moet toch gekend zijn om Kyoto en die Allowances te kunnen 
aanvragen?
Als je nou een huis bouwt... en je veroorzaakt minder co2 dan in 1990 
... het krediet mag je dat niet opvragen en eventueel op de beurs ten 
gelde maken?

Sven

On 28-dec-05, at 19:18, Rob Gort, Bouwcarrousel BV wrote:

> Hi Sven / Valentina
>
> I'm Rob from Holland. I haven't got exact figures either and am quite
> interested to in this subject. I did some LCA-work for the government 
> in
> the past. I just know, of a dutch company which fabricates adobe-like
> stones with machines (named Oskam), that the production of these stones
> uses only 1 % of the normal energy consumption which is needed to
> produce comparable stones.
> Because straw bales are a less industrial product then prefabricated
> adobe stones, their energy efficiency 'll probably be even better.
> Off course, building with baked stones is a typical Dutch and English
> tradition, in most other countries other materials like concrete or 
> wood
> are used more (the differences in eco-profile between wood (esp.
> FSC-wood) and strawbales will be far less)...
> The step between the eco-score of materials themselves and a whole 
> house
> is not just extrapolation.
> Stones or straw bales are only part of the materials which are used in
> building, but normally the construction takes about 80 till 90 % of the
> total weight of a building (this is including the roof and floors).
> The lifetime and the maintenance which has to be done, are also
> important factors. Comparison between alternatives should be done in a
> honest way, so for a fixed period of time like 100 years is a normal
> practice. Off course the need for maintenance depends of the design of
> the building, so this is quite difficult to estimate in standard
> figures.
>
> About LCA further I can say the following. In LCA-terms, because you 
> can
> view the production of straw bales for building as nothing different
> from a normal harvesting  procedure, this step requires none extra
> energy. So, in fact, the major factor is probably the extra transport
> (in comparison with the normal transport to a fourrage dealer for
> example)can be reckoned to be caused by the building process (off 
> course
> this could also be even less transport). When you adapt the straw bales
> in size or shape and you use machinery like a cutter or sawing machine
> for that, this should also taken into account.
> Plastering with clay 'll have quite a positive effect, in comparison
> with using standard plasters on basis of cement etc.
>
> Valentine, when you have more information, please let me / us all
> know...
>
> Regards
> Rob Gort
> info at bouwcarrousel...
>
>
>
>
> -----Original Message-----
> From: strawbale-bounces at amper....muni.cz
> [mailto:strawbale-bounces at amper....muni.cz] On Behalf Of valentina
> Sent: woensdag 28 december 2005 16:37
> To: European strawbale building discussions
> Subject: Re: [Strawbale] CO2 production for building a house
>
>
> Hi Sven,
> here valentina from barcelona .... i will be able to give you this
> data at the end of 2006.....an investigation project of the
> university of barcelona will take place and will give results....and
> i guess the data will be of free circulation....hope you can wait or
> find somewere else.....i'm really interested in this information too...
> for what i know...the rules are quiet difficult....to trust....it
> seems that evrybody has is own...and the numbers are very
> differents..... the people that work on this use software like
> SimaPro.....for LCA analysis....and Transis for energy efficiency....
> best regard, valentina
>
> El 28 Dec 2005, a las 13:07, Sven Aerts escribió:
>
>> Someone with thumb-rule figures on how much CO2 is produced by
>> building a standard alone standing house for a normal family and
>> that compared to a strawbale one.
>> Nobody has a book where that is mentioned ?
>>
>> Is it kilotons or megatons of CO2 that are produced due to brick-
>> houses ?
>> and a strawbale house that's like 2% of that?
>>
>> I just need some thumb rule figures.
>>
>> Tried about everything and everybody here in Belgium... but no answer.
>>
>> thank you
>> --
>> Sven
>> GSM: +32 (0)485/389679
>> http://homepage.mac.com/aertssven/
>>
>>  Email: aertssven at mac...
>>  CHAT : iVisit: aertssven.5797 - ICQ: 113835655 - YahooID: aertssven -
>>   SKYPE: SvenAERTS - AIM: aertssven1 - MSN: sven_aerts at hotmail...
>> ----------
>> Have a nice day...
>>
>>
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>
>
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