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RE: [Strawbale] Concrete Base - foundations question??



Hi Kurt,
 
what i know is that if a steel ship is moored for a long time (a year or so) in the same direction it gets magnetised in the same direction as the earth magnetic field. To let the compasses work well the ships then need to be demagnetised. So parallel i guess that the steel in concrete will also adapt to the local magnetic fields and over time, like a cameleon, have the same properties as the land beneath.
The good thing of steel is that it does shield off lots of electro magnetic radiation. so for that reason i might rather use some steel in my straw walls rather then to be afraid of magnetic disturbances. However i'm not very experienced with devining and i'm sure a sourcer can tell you more about this
 
bye
 
Joost Brand
 


From: strawbale-bounces@amper....muni.cz [mailto:strawbale-bounces@amper....muni.cz] On Behalf Of Kurt Splittdorf
Sent: dinsdag 3 april 2007 11:52
To: European strawbale building discussions
Subject: Re: [Strawbale] Concrete Base - foundations question??

if you want to use concrete, you should think about the iron that you usaly us in the concrete. This iron can extremly change the magnetic field of the earth!!! And i dont belive that this is good. Some people made experiments with straw fibres or littel metal fibres.


wish you all the best....

Kurt