A triangular roadside drainage channel is to be designed to carry a design dischargeof 12.5cfs. The steepest part of the channel has a ground slope of 200H:1V. The channel is to be plantedwith a fescue blend (n=0.04). The maximum side slope is 10H:1V. The client requires that the channeldepth (normal plus freeboard) be less than 1ft. Would the channel suffice if designed around themaximum side slope? If not, recommend 3 unique ways that the channel could be redesigned to satisfythe client’s restriction.
A triangular roadside drainage channel is to be designed to carry a design dischargeof 12.5cfs. The steepest part of the channel has a ground slope of 200H:1V. The channel is to be plantedwith a fescue blend (n=0.04). The maximum side slope is 10H:1V. The client requires that the channeldepth (normal plus freeboard) be less than 1ft. Would the channel suffice if designed around themaximum side slope? If not, recommend 3 unique ways that the channel could be redesigned to satisfythe client’s restriction.
Traffic and Highway Engineering
5th Edition
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Garber, Nicholas J.
Chapter16: Highway Drainage
Section: Chapter Questions
Problem 1P
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A triangular roadside drainage channel is to be designed to carry a design discharge
of 12.5cfs. The steepest part of the channel has a ground slope of 200H:1V. The channel is to be planted
with a fescue blend (n=0.04). The maximum side slope is 10H:1V. The client requires that the channel
depth (normal plus freeboard) be less than 1ft. Would the channel suffice if designed around the
maximum side slope? If not, recommend 3 unique ways that the channel could be redesigned to satisfy
the client’s restriction.
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