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Green Roofs for Storm Water Management: A Review

conference contribution
posted on 06.12.2017, 00:00 authored by Mohammad Anwar, Mohammad RasulMohammad Rasul, Mohammad KhanMohammad Khan
The rapid urbanization and industrialization involve an unsustainable use of natural systems lead to various problems in cities. The urban hydrological system experiences fluctuating amount of surface runoff water when it rains heavily. It has been suggested that green roofs significantly mitigate storm water runoff generation even in tropical climate. Green roofs have become popular due to its proven benefits by mitigating urban heat island effects and protecting biodiversity. The annual rainfall and runoff relationship for green roofs is determined by the depth of the substrate. Water retention capacity mostly depends on substrate’s physical conditions such as dry or wetness. Generally 6 to 12 mm of rain is required for dry substrate to initiate runoff whereas response of wet conditions is mostly straight. Besides, there are some other factors affecting runoff dynamics such as type of green roof and its slope; age of green roof; type of vegetation; soil moisture characteristics and weather. The review indicates that there is not much research in green roofs performance over storm water runoff; hence there is a need for further research. This paper reviews and addresses the role of green roofs in urban storm water management.

History

Start Page

1

End Page

6

Number of Pages

6

Start Date

28/10/2011

Finish Date

31/10/2011

Location

Chongqing, China

Publisher

WREC-Asia

Place of Publication

China

Peer Reviewed

Yes

Open Access

No

Era Eligible

No

Name of Conference

World Renewable Energy Asia Regional Congress (WREN-Asia) and the 5th International Conference on Sustainable Development in Building and Environment (SuDBE2011)