Location: Seoul National University Building No 35 GPS coordinates: 37.456398, 126.952150
Concave green roof is in the area of 840 m2 of the total 2000 m2 rooftop area; water retention measures volume is 150m3.
Prior to implementation
A normal flat concrete rooftop where all the rainwater was directed to the downpipe and connected to the nearby sewer system. As a result, there was an increased risk of flooding at downstream neighbors and the temperature rises up to 50 C at the surface of rooftop during summer months.
Concave green roof is composed of 420 m2 of the flower garden, 100m2 of the fish pond and 320 m2 of vegetable garden. This place became a very friendly and beautiful gathering place with the Water-Energy-Food nexus. Green roof community formed and holds several events annually – such as potato harvesting, Kimchi making, etc.