Water drain channels

The water drains are small rock filled channels 

• to drive rain from the roof to the garden areas (oriented at the lower edge of the roof)
• to drive rain from the ground to the garden areas (has a net structure)
• drive away used water from the house (from shower and washing machine)
• for plants which can be planted into it

Full project on a slideshow:

http://smartecohousebyhat.blogspot.com/2016/04/the-experimental-concept.html 

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