Open AccessModelling of On-Site Stormwater Detention Underneath a Car Porch
Author(s) -
Johnny Ong King NGU*,
Darrien Yau Seng Mah,
Ching Vern LIOW,
Ik Tung NGU
Publication year - 2019
Publication title -
international journal of innovative technology and exploring engineering
Language(s) - English
Resource type - Journals
ISSN - 2278-3075
DOI - 10.35940/ijitee.l2718.1081219
Subject(s) - porch , stormwater , surface runoff , outfall , environmental science , stormwater management , hydrology (agriculture) , doors , storm water management model , storm , civil engineering , environmental engineering , engineering , meteorology , geography , geotechnical engineering , ecology , structural engineering , biology
This study focuses on the possibility of On-Site Stormwater Detention (OSD) underneath a residential car porch. The space provided in the car porch area can be made good of it by introducing an OSD beneath it to temporary store stormwater from roof during raining in hoping of reducing the surface runoff. The OSD is subjected to 15-minute, 10-year Average Recurrence Interval (ARI) design rainfall. This process in urban hydrology is presented by using Storm Water Management Model (SWMM). Efficiency of the OSD is also investigated by different number of orifice outlets. Modelling efforts report that one orifice outlet is preferable, and it marks approximate 95% discharge reduction at the outfall.