Using earth to deflect wind

Pacific Edge Permaculture + Media pacedge at magna.com.au
Wed Dec 12 20:55:44 EST 2001


I think that earthworks that work as windbreaks, as you describe in your
email, would have to be massive. My question is whether they would be
warranted in terms of time and energy expenditure (and cost of you are not
to do them yourself).

Maybe the tree windbreaks you have planted would be more economical.

..Russ Grayson



> From: <flickwright at ozemail.com.au>
> Reply-To: "permaculture" <permaculture at franklin.oit.unc.edu>
> Date: Wed, 12 Dec 2001 14:14:10 +1100
> To: "permaculture" <permaculture at franklin.oit.unc.edu>
> Subject: Using earth to deflect wind
> 
> Hi everyone, I tried a posting months ago, but it never appeared so will try
> again.
> 
> My partner and I are in the process of designing a house for a fairly flat
> site on the Eyre Peninsula of South Australia that has a fair amount of wind
> exposure. We are wondering whether anyone has experience or knowledge of
> designing or using swales/mounds/earth around a house and garden for wind
> protection/deflection. We are not looking at earth berming the house, but
> protecting the zones 1- 3 as much as possible.
> 
> OUr climate is semi-arid with only 500 mm of rainfall and a massive
> evaporation rate due to hot summers (35 - 45 degrees Celcius) and most rain
> falling Autumn - Spring (only one month rainfall exceeds evaporation). We both
> have studied PDCs and note some references to mounding earth in the wind
> sectors to create microclimates, but are curious to know of practical
> examples.
> 
> In the meantime we have direct seeded significant windbreaks of native, fire
> retardant species (another major risk in our climate) but they will take at
> least four years to begin to create and effect.
> 
> cheers
> flick wright
> 
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> 
> 
> 
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