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Green Roof Advantages And Disadvantages

1244 Words5 Pages

Green roofs are the best LID practice to improve the environment and to manage the stormwater rainfall runoff in cities. We constructed the blue-green roof at the Chungwoon middle school, Seoul and has been monitored to analyze its performance in reducing the stormwater runoff and peak runoff delay. Green roof are helpful to reducing the storm water runoff because it change the impervious area of the roof into the pervious area. Stormwater runoff from the control roof and green-blue roof has been monitored. From the results, it was found that the rainwater outflow from green-blue roof is much less than the control roof which helps for the stormwater management in urban areas. Results also shown that green-blue roof also helps to reduce the surface surface temperature of the roofs.
The global population is increasing every year and the percentage of urban population is also concentrating worldwide [1]. Urban areas are expanding in terms of space and density. The impermeable surfaces are increased due to the effect of the urbanization. This as a result has numerous consequences for some city infrastructure and surrounding environment. Regarding stormwater management the infiltration decreases and surface runoff increases and also the stress on existing stormwater infrastructure increases. As result, flooding from the sewer may become more frequent in the urban areas. In addition, the studies indicate that in certain areas global warming may caused increased frequency of

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