Rainwater Harvesting In Varied Sizes Of Residential Plots In Dhaka City

Journal of applied sciences research

article

Jubaida Gulshan Ara¹  Zebun Nasreen Ahmed² 

[1] Department of Architecture, Southeast University;Department of Architecture, Bangladesh University of Engineering and Technology

关键词: Rainwater Harvesting;    Dhaka City;    Residential Plots;   

DOI  :  10.22587/jasr.2019.15.5.4

学科分类：社会科学、人文和艺术（综合）

来源: AENSI

【 摘 要 】

In the current flood and drought situation of Dhaka City, rainwater harvesting (RWH) may provide a sustainable solution, for city water management. Reports show, that residential land use occupies 36.47% of the city, and residences consume 88.59% of the total city water supply, which is severely constrained. Therefore, given the high amount of rain incident in the city annually, introducing RWH systems in residential plots of Dhaka city, might bring about noteworthy changes. According to Bangladesh Building Construction Rules 2008, Maximum Ground Coverage of the residential building can vary between 50% and 67%, depending on the plot sizes. For that reason, demand vs supply ratio and RWH potentials might vary, due to the sizes of the plots. This paper reports on an investigation, which studied the scope of RWH in different sized residential plots of the city. The paper reports on two of the case–studies selected for the abovementioned study; one in the smallest sized plot allowable, and the other in a large-scale plot. For both the case studies, the RWH potential has been estimated, and demand vs supply scenario has been determined, to analyses for the best option for RWH. The research found that, for small scale plots, though rainwater storage might be the suitable option, for the large-scale plot, underground water table recharge seems the best option.

【 授权许可】

Unknown