From: Guilherme Neves Castagna <guilherme@permacultura.org.br>
To: Lista Permaculture <permaculture@lists.ibiblio.org>
Subject: Re: [permaculture] guesstimating rainwater runoff on green roof
Date: Sun, 16 Dec 2007 08:17:23 -0200
Hi there Paul,
Thanks for your message mate. I found two articles that shed a
somewhat specific perspective on the theme. Hope it's of good use for
you and the folks @ your local Eco-building Guild.
Message: 18
Date: Fri, 14 Dec 2007 20:46:58 -0800
From: Paul Cereghino <paul.cereghino@comcast.net>
Subject: Re: [permaculture] guesstimating rainwater runoff on green
roof
To: permaculture <permaculture@lists.ibiblio.org>
Message-ID: <47635C42.3040109@comcast.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> Does anyone have any reference or estimate of runoff % on green roofs?
>
>
Our local eco-building guild is working toward monitoring several
projects... they put their proposed methods online and they dig in
pretty deep... looking at change of discharge per rainfall event between
green roof and control.
You could also talk more in terms of 'potential storage' and compare
'field capacity' soil to dry soil for the volume of the roof.