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The effects of hydraulic jumps in steep box gutters
Conference paper   Peer reviewed

The effects of hydraulic jumps in steep box gutters

Luke Verstraten, Terry Lucke and Helen Fairweather
Conference Proceedings of the 14th IWA/IAHR International Conference on Urban Drainage, pp.237-240
IWA/IAHR International Conference on Urban Drainage, 14th (Prague, Czech Republic, 10-Sep-2017–15-Sep-2017)
IWA Publishing
2017
url
http://www.icud2017.org/View
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Abstract

Civil Engineering roof drainage storm water management box gutters hydraulic design extreme weather
In open-channel flow, increasing a channels slope reduces the depth of flow. This principle is applied in roof drainage design guidelines for box gutters, which often allow for a reduction in gutter depth as gutter slope increases. It is assumed that the depth of flow in a gutter will continue to reduce as the slope increases. This study has found, however, that gutter slopes of 1:100 and greater, can form hydraulic jumps, increasing the flow depth, where the lateral inflow meets the channel flow. The flow depth of the hydraulic jump, for slopes of 1:100 or more, can be greater than the maximum flow depth in a channel with a slope of 1:150 or less.

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