Grate Inlet Hydraulic Efficiency with Varying Porous Asphalt Aprons
Publication: Journal of Irrigation and Drainage Engineering
Volume 147, Issue 6
Abstract
Grate inlets collect surface runoff from the roadway and other land surfaces and connect to a drainage network. Surface runoff that does not discharge to a drainage system because of insufficient inlet capacity can cause flooding and excessive hazards to pedestrians and motorists, as well as diminished roadway durability, safety, and efficiency. To minimize these risks, this paper suggested a new drainage inlet by surrounding the conventional grate inlet with porous asphalt referred to as an efficient grate inlet. Testing was performed on a scale road model with simulated runoff of various inflows. Various geometrical parameters were simulated, such as discharge rate, longitudinal slope, cross slope, and the dimensions of porous asphalt. This paper investigates the drainage efficiency of the efficient grate inlet (EGI) and comparing it to that of the conventional grate inlet (CGI). An empirical relationship is proposed for the inlet efficiency as a function of the width of porous asphalt and roadway flow characteristics.
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Data Availability Statement
All data and models that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The authors would like to acknowledge the University of Babylon for providing all the facilities needed to produce this paper.
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Published In
Journal of Irrigation and Drainage Engineering
Volume 147 • Issue 6 • June 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Apr 14, 2020
Accepted: Dec 9, 2020
Published online: Mar 24, 2021
Published in print: Jun 1, 2021
Discussion open until: Aug 24, 2021
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