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Analysis of the Performance of Storm Drain Inlets Under the Effect of Clogging Near a Construction Job Site
Abstract
Storm drainage inlets are a crucial component of any storm drainage system which collects the stormwater from the streets and diverts it into the sewer lines, eventually draining it into the water bodies e.g., lakes, rivers, pond, and streams. Water accumulation and ponding occurs when the inlets are not able to discharge the excess storm water flowing on the street, creating floods eventually. The performance of an inlet gets affected near a construction job site due to the presence of construction debris and waste which clogs the inlet opening and reduces the inflow of water into the inlets. This research is focused on evaluating the inlet performance under the effect of clogging and the amount of water flowing on the street. A storm drainage network is modelled in the Stormwater Management Model (SWMM) developed by US EPA, for an area near a construction job site in Magnolia Park, Houston. The data obtained from the simulation-based experiment is used as an input to a limit state function model which determines the failure condition of an inlet. Probability of failure, Pf of the inlet is then determined using the reliability assessment methods using the SWMM experimental results. The results and findings provide a comprehensive understanding of the performance parameters of inlets under variable clogging conditions and the approach flow values. Results showed that as the approach flow increases, the failure probability of the inlet increases. For the same value of approach flow, the probability of failure was higher for an inlet with higher clogging percentage. Findings of this research can greatly benefit the storm water management authority in decision-making related to the design and maintenance work of the storm drainage inlets and can be utilized for development of an early as well as a real-time flood warning system.
Subject
Storm Drainage InletsClogging
Construction Debris
Performance Parameters
Reliability Assessment
Citation
Patel, Parth Dineshbhai (2023). Analysis of the Performance of Storm Drain Inlets Under the Effect of Clogging Near a Construction Job Site. Master's thesis, Texas A&M University. Available electronically from https : / /hdl .handle .net /1969 .1 /199819.