Title: Storing roofs, an alternative for urban rainwater management?
Abstract: Rainwater runoff management has become extremely complex as the result of the increasingly impervious nature of urban and suburban surfaces. Urbanisation can indeed lead to high volumes of surface water runoff. This undesirable effect could be reduced by disconnecting roofs from the sewer system. This study represents a first attempt to establish a model concerning green roofs and flat roof storage systems based on a physical approach. The aim is to assess their respective effect on water runoff management by analysing and comparing their efficiency as illustrated by meteorological conditions data collected over a long period of time (1989-1995). Results show that the flat roof system could reduce peak flow and distribute runoff quantity over a long time period. On the other hand, the green roof system reduces the volume of runoff more effectively and delays the initial time of runoff, but peak flow reduction is less efficient.
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: article
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