title: Experimental study of hydraulics and sediment capture efficiency in catchbasins.
abstract: Catchbasins (also known as gully pot in the UK and Australia) are used to receive surface runoff and drain the stormwater into storm sewers. The recent interest in catchbasins is to improve their effectiveness in removing sediments in stormwater. An experimental study was conducted to examine the hydraulic features and sediment capture efficiency in catchbasins, with and without a bottom sump. A sump basin is found to increase the sediment capture efficiency significantly. The effect of inlet control devices, which are commonly used to control the amount of flow into the downstream storm sewer system, is also studied. These devices will increase the water depth in the catchbasin and increase the sediment capture efficiency. Equations are developed for predicting the sediment capture efficiency in catchbasins.
authors.affiliation: Department of Civil and Environmental Engineering, University of Alberta, Edmonton, AB, Canada, T6G 2W2 E-mail: dzhu@ualberta.ca.
authors.forename: Yangbo
authors.initials: Y
authors.lastname: Tang
authors.affiliation: Department of Civil and Environmental Engineering, University of Alberta, Edmonton, AB, Canada, T6G 2W2 E-mail: dzhu@ualberta.ca.
authors.forename: David Z
authors.initials: DZ
authors.lastname: Zhu
authors.affiliation: Department of Civil and Environmental Engineering, University of Alberta, Edmonton, AB, Canada, T6G 2W2 E-mail: dzhu@ualberta.ca.
authors.forename: N
authors.initials: N
authors.lastname: Rajaratnam
authors.affiliation: Water Resources, City of Calgary, Calgary, AB, Canada, T2G 4K8.
authors.forename: Bert
authors.initials: B
authors.lastname: van Duin
mesh_terms: D001315:Australia; D004323:Drainage, Sanitary; D019015:Geologic Sediments; D011891:Rain; D014872:Water Movements