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Nicolas Oviedo Escobar

Andres Torres

Abstract

In this study the hydric attenuation of a productive green roof was assessed by using three indicators: lag-time, runoff coefficient and water volume retained. Two types of plants – an herbaceous (Lactuca sativa) and a Cruciferae (Raphanus sativus) – were considered and eight rain events were monitored for four houses in La Isla neighborhood, Soacha (Colombia) (4° 34’ 22.3”, 74° 10’ 53.5”, 2701 meters above sea level). Maximum lag-times and volumetric percentage retention and minimum equivalent runoff coefficients of 32 minutes, 80% and 0.1 respectively were obtained. Hydrologic benefits of implementing green roofs were assessed based on the comparison between required drainage infrastructure with and without green roofs and the assessment of flooding probabilities at the study area (neighborhood La Isla, Soacha, Colombia). Monte Carlo technic was used to simulate the answer of a sewer in all the drainage areas where green roofs were implemented, using a random distribution of runoff coefficients following a kernel distribution corresponding to field data obtained. Results obtained show maximum savings around 22% and a reduction of flooding probabilities of 35%.

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Keywords

Runoff coefficient, productive green roof, Kernel estimators, flooding probabilities.

References
How to Cite
Oviedo Escobar, N., & Torres, A. (2014). Hydric Attenuation and Hydrological Benefits for Implementing Productive Green Roof in Soacha, Colombia. Ingenieria Y Universidad, 18(2), 291 - 308. https://doi.org/10.11144/Javeriana.IYU18-2.hahb
Section
Articles
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