Abstract
Stormwater Measures Using Rooftop Greenings
Track: Water, Wastewater, and Stormwater
Author(s): Sachiko Kikuchi, Hajime Koshimizu
The effect of decreasing of stormwater runoff by rooftop greenings has been analyzed. After that, the available placement of rooftop greening has been discussed with GIS. The case study area was one of the flood-prone district 'Iidabashi' in Tokyo. Average elevation, building ratio, build up floor area, road area, road node ratio and area of the parks and recreation green has been gathered as the regional character. In the scenarios of the gusty rainfall intensity or low total measurement or comparatively narrow rainfall area, the stormwater runoff has been simulated under the maximum rainfall intensity (78mm/hr) or average rainfall (4.2mm/hr). The results said the reasonable placement of roof greenings was able to decrease the maximum stormwater runoff and to cut the peak value of quantity of drainage of the inflow load quantity to the sewage.
Sachiko Kikuchi
Organization for the Strategic Coordination of Research and Intellectural Property, Meiji University
1-1-1, Higashi-mita, Tama-ku
Kawasaki , Kanagawa 214-8571
Japan
Phone: +81-44-934-7162
E-mail: kikuti@isc.meiji.ac.jp
Hajime Koshimizu
School of Agriculture, Meiji University
1-1-1, Higashi-mita, Tama-ku
Kawasaki , Kanagawa 214-8571
Japan
Phone: +81-44-934-7162
E-mail: koshimiz@isc.meiji.ac.jp