An old railway line drained is covered by weed over-grown winding earth channel roughly 0.8m wide and with bank slope of about 1:16. The channel is long and shallow, with a bed slope of about 0.1mm/m and only 400mm deep at the lowest point. Engineers estimate the channel will need to convey a flow of about 0.23m3/s in a five year storm, to avoid creating a drainage problem when the lines reopens next year. Does the channel have sufficient capacity or will it need to be used and re-lined?
An old railway line drained is covered by weed over-grown winding earth channel roughly 0.8m wide and with bank slope of about 1:16. The channel is long and shallow, with a bed slope of about 0.1mm/m and only 400mm deep at the lowest point. Engineers estimate the channel will need to convey a flow of about 0.23m3/s in a five year storm, to avoid creating a drainage problem when the lines reopens next year. Does the channel have sufficient capacity or will it need to be used and re-lined?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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An old railway line drained is covered by weed over-grown winding earth channel roughly 0.8m wide and with bank slope of about 1:16. The channel is long and shallow, with a bed slope of about 0.1mm/m and only 400mm deep at the lowest point. Engineers estimate the channel will need to convey a flow of about 0.23m3/s in a five year
storm, to avoid creating a drainage problem when the lines reopens next year. Does the channel have sufficient capacity or will it need to be used and re-lined?
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