Runoff detention effect of a sedum green-roof
(2007) In Nordic Hydrology 38(1). p.99-105- Abstract
- In order to estimate the detention effect (storage and peak flow attenuation) of a sedum green-roof, a comparison between the response of an impervious roof (runoff coefficient C = 1) and a green-roof has been carried out. Precipitation and runoff data from several controlled experiments (with wet initial conditions, i.e. approximately at field capacity) on a sedum green-roof were used for the analysis. For events with variable rain intensity, the green-roof's attenuation effect was as high as 65% for design storms. In contrast, events with constant intensity had increases in peak flows of up to 5%. The lowest detention volumes were observed for the experiments with constant rain intensity, for which a maximum of 29% of the rain volume was... (More)
- In order to estimate the detention effect (storage and peak flow attenuation) of a sedum green-roof, a comparison between the response of an impervious roof (runoff coefficient C = 1) and a green-roof has been carried out. Precipitation and runoff data from several controlled experiments (with wet initial conditions, i.e. approximately at field capacity) on a sedum green-roof were used for the analysis. For events with variable rain intensity, the green-roof's attenuation effect was as high as 65% for design storms. In contrast, events with constant intensity had increases in peak flows of up to 5%. The lowest detention volumes were observed for the experiments with constant rain intensity, for which a maximum of 29% of the rain volume was detained, whereas for rain events with variable intensity the detention volume was up to 52%. Simulations (using PondPack), based on a real case study, showed that green-roofs can be implemented in combination with other structural best management practices (BMPs) to obtain a desired detention. They can be used to reduce the size of other structural BMPs, and can occupy unused space that is readily available. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/674992
- author
- Villarreal-Gonzalez, Edgar LU
- organization
- publishing date
- 2007
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- green-roof, BMP, detention, roof runoff, sedum
- in
- Nordic Hydrology
- volume
- 38
- issue
- 1
- pages
- 99 - 105
- external identifiers
-
- wos:000243932900007
- scopus:33846781518
- ISSN
- 0029-1277
- DOI
- 10.2166/nh.2007.031
- language
- English
- LU publication?
- yes
- id
- 507a30f5-0fc0-48f0-a719-b0f1c544f947 (old id 674992)
- date added to LUP
- 2016-04-01 12:07:46
- date last changed
- 2023-06-27 11:06:50
@article{507a30f5-0fc0-48f0-a719-b0f1c544f947,
abstract = {{In order to estimate the detention effect (storage and peak flow attenuation) of a sedum green-roof, a comparison between the response of an impervious roof (runoff coefficient C = 1) and a green-roof has been carried out. Precipitation and runoff data from several controlled experiments (with wet initial conditions, i.e. approximately at field capacity) on a sedum green-roof were used for the analysis. For events with variable rain intensity, the green-roof's attenuation effect was as high as 65% for design storms. In contrast, events with constant intensity had increases in peak flows of up to 5%. The lowest detention volumes were observed for the experiments with constant rain intensity, for which a maximum of 29% of the rain volume was detained, whereas for rain events with variable intensity the detention volume was up to 52%. Simulations (using PondPack), based on a real case study, showed that green-roofs can be implemented in combination with other structural best management practices (BMPs) to obtain a desired detention. They can be used to reduce the size of other structural BMPs, and can occupy unused space that is readily available.}},
author = {{Villarreal-Gonzalez, Edgar}},
issn = {{0029-1277}},
keywords = {{green-roof; BMP; detention; roof runoff; sedum}},
language = {{eng}},
number = {{1}},
pages = {{99--105}},
series = {{Nordic Hydrology}},
title = {{Runoff detention effect of a sedum green-roof}},
url = {{http://dx.doi.org/10.2166/nh.2007.031}},
doi = {{10.2166/nh.2007.031}},
volume = {{38}},
year = {{2007}},
}