Reliability Analysis of Grate Inlets

• Main Author: Kamarul Zaman, `Aifaa Balqis
• Format: Final Year Project
• Language: English
• Published: Universiti Teknologi PETRONAS 2017
• Subjects: TA Engineering (General). Civil engineering (General)
• Online Access: http://utpedia.utp.edu.my/23092/1/Dissertation%20Report.pdf; http://utpedia.utp.edu.my/23092/

Street inlet is a drainage structure with an opening used to collect stormwater runoff from the street pavement and discharge it into a stormwater drainage system. In Malaysia, urbanization has led to the use of concrete structures and pavement which reduce the infiltration rate of stormwater into the ground. During a high stormwater event, the street inlet fails to intercept the water and lead to street ponding. This research is conducted to investigate the hydraulic efficiency of three grate inlet designs used in Malaysia and develop a reliability model to determine the probability of failure of the grate inlets. In this experimental study, a full scale of half way roadway flume was used to simulate flows of the stormwater into the grate inlets. The efficiency of each grate inlets was analysed at different approaching flows. Results showed that the ability of each inlet to capture and intercept the flow is varies, thus resulting in different hydraulic efficiency.