GENERALIZED HYDRAULIC CHARACTERISTICS OF GRATE INLETS
FIVE BASIC TYPES OF GRATE INLETS WERE INVESTIGATED. A RATIONAL QUALITATIVE ANALYSIS OF THE VARIABLES GOVERNING THE EFFICIENCY OF A GRATE INLET WAS VERIFIED THROUGH EXPERIMENTAL MEASUREMENT. THE EXPERIMENTAL RESULTS ARE PRESENTED IN A GENERALIZED GRAPHICAL FASHION VALID FOR ANY SIZE GRATE. THESE PLOTS CAN BE USED FOR DESIGN PURPOSES AND A METHOD IS PRESENT FOR DETERMINATION OF THE LENGTH OF GRATE REQUIRED FOR OPERATION AT OPTIMUM EFFICIENCY. THE FIVE BASIC TYPES OF GRATES ARE CLASSIFIED ACCORDING TO THEIR DECREASING HYDRAULIC EFFICIENCIES. GRATES CONSTRUCTED WITH CURVED-VANE TYPE BARS WERE FOUND TO BE THE MOST EFFICIENT OVER THE LARGEST RANGE OF GUTTER VELOCITIES.
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Supplemental Notes:
- Paper sponsored by Committee on Surface Drainage of Highways and presented at the 45th Annual Meeting. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
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Authors:
- Cassidy, John J
- Publication Date: 1966
Media Info
- Media Type: Print
- Features: Appendices; Figures; References;
- Pagination: pp 36-48
- Monograph Title: Highway drainage and scour studies
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Serial:
- Highway Research Record
- Issue Number: 123
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Bars (Building materials); Culvert inlets; Design; Drainage structures; Economic efficiency; Graphics; Grates; Hydraulics; Mechanical vanes; Qualitative analysis; Size; Vane shear tests
- Uncontrolled Terms: Design criteria; Efficiency; Graphical analysis; Inlets
- Old TRIS Terms: Curved bars
- Subject Areas: Design; Economics; Highways; Hydraulics and Hydrology;
Filing Info
- Accession Number: 00203949
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Oct 28 1994 12:00AM