Eficiencia en la retención del agua de lluvia de cubiertas vegetadas de tipo "extensivo" e "intensivo"
Flash floods in urban areas caused by overload of drainage networks are a recurrent problem of raising importance. Greenroofs retain part of the stormwater, lowering surface flow and generating runoff hydrographs with lower and delayed peak flows. Therefore, this technology can contribute to m...
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| Publicado en: | Revista de la Facultad de Ciencias Agrarias |
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| Autores principales: | , , , , , , , , , , , , , , , |
| Materias: | |
| Acceso en línea: | https://bdigital.uncu.edu.ar/fichas.php?idobjeto=5016 |
| Sumario: | Flash floods in urban areas caused by
overload of drainage networks are a recurrent
problem of raising importance. Greenroofs
retain part of the stormwater, lowering surface
flow and generating runoff hydrographs with
lower and delayed peak flows. Therefore,
this technology can contribute to mitigate the
overload of drainage networks. The results of
the study that was carried out in City of Buenos
Aires along almost two years, showed that the
retention capacity of the tested lots tasted varied,
depending upon precipitation, coverage and
depth of the substrate. With precipitation less
than or equal to 20 mm, the retention fraction
was high (73% to 100%), and when precipitation
reached 35 to 40 mm, the maximum percentage
of retention was around 60%. However, when the
rainfall was approximately 100 mm, the retention
fraction was reduced substantially, reaching
values nearing 30%. The results of the test
showed that green roofs system represent a good
alternative in the integrated management of water
runoff in urban watersheds. |
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