Abstract
This paper presents the results of an industry-supported study conducted at Oxford Brookes University to explore the factors influencing the hydraulic efficiency of road drainage gratings. A number of full-size model gratings with varying geometric characteristics have been tested on a model road surface, and an assessment made of the influence of grating length and width, horizontal and vertical bar alignment, depth of depression, road slope, crossfall, and approaching flow width. The effect of these variables is illustrated graphically. In addition, the effect of road roughness is illustrated using previously published data. Grating width is found to be of greater importance than length, and gratings with bars orientated parallel to the kerb are shown to be more efficient than those with bars set at right angles to the kerb. Altering the alignment of the bars in the vertical plane reduces splashing and increases efficiency. Depressing a grating is found to increase efficiency, and increasing road slope, crossfall and flow width approaching a grating, reduces efficiency. The discussion is supplemented using other researchers' findings. (A)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Proceedings of the Institution of Civil Engineers - Municipal Engineer
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
