VDP at 12:54, 28 July 2014

2014-07-28T12:54:27Z

← Older revision		Revision as of 12:54, 28 July 2014
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	* http://godfreyroofing.com/wp-content/uploads/2011/09/green-roofing-layers.png		* http://godfreyroofing.com/wp-content/uploads/2011/09/green-roofing-layers.png
	* http://www.sfu.ca/sustainablevancouver/efl/alternativeroofing/images/image011.jpg		* http://www.sfu.ca/sustainablevancouver/efl/alternativeroofing/images/image011.jpg

			==Licensing==
			{{GFDL}}

VDP: Schematic showing the setup of an intensive and an extensive green roof. For the thicknesses of the growing medium layer of both, we can make a distinction into 4 types[http://www.conservationtechnology.com/documents/GreenRoofHandbook1008.pdf Dept...

2014-07-28T12:53:58Z

New page

Schematic showing the setup of an intensive and an extensive green roof. For the thicknesses of the growing medium layer of both, we can make a distinction into 4 types<ref>[http://www.conservationtechnology.com/documents/GreenRoofHandbook1008.pdf Depths of extensive and intensive green roof media]</ref><ref>[http://digitalcommons.unl.edu/cgi/viewcontent.cgi?article=1034&context=rurals Depth of extensive and intensive green roof media, not that a minimum depth for intensive green roofs of 25,4 cm is given there]</ref>:

Extensive green roofs:
* thickness range 1= 7,6 cm to 10,2 cm (suitable for sedums, herbs)
* thickness range 2= 12,7 cm to 17,8 cm (sedums, herbs, perennials)

Intensive green roofs:
* thickness range 3= 25,4 cm to 30,5 cm (perennials, grasses, shrubs
* thickness range 4= 30,5 cm+ (grasses, shrubs, trees)

Note that only tickness range 1 and 4 are shown in the schematic. Thickness range 3 was not drawn out, as it seems to be only practical for when designing [[sod roof]]s (which are not accessible roofs). Thickness range 4 instead are true intensive green roofs which are accessible<ref>[http://www.nps.gov/tps/sustainability/new-technology/green-roofs/define.htm Thicknesses of growing medium of intensive, extensive and semi-intensive roofs]</ref>

Note thate the membrane protection also works as root barrier, see [http://digitalcommons.unl.edu/cgi/viewcontent.cgi?article=1034&context=rurals this document, at page 2], it's marked as simply "root barrier" in the image

Main references:
{{reflist}}

Other references:
* http://godfreyroofing.com/wp-content/uploads/2011/09/green-roofing-layers.png
* http://www.sfu.ca/sustainablevancouver/efl/alternativeroofing/images/image011.jpg

File:Intensive extensive green roofs.png - Revision history

VDP at 12:54, 28 July 2014

VDP: Schematic showing the setup of an intensive and an extensive green roof. For the thicknesses of the growing medium layer of both, we can make a distinction into 4 types[http://www.conservationtechnology.com/documents/GreenRoofHandbook1008.pdf Dept...