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b) An open channel has the croOss-sectional shape as shown in Figure 2 below. The main and side channels are at a slope Se = 0.0004 and have n - 0.024. The side slopes are all 1:l. Calculate the maximum discharge which can be acoommodated in the main channel before flow spills onto the side channels. 3m Floodway Floodway -20 m- 5m- -25 m Figure 2- Question 2 (b)

b) An open channel has the croOss-sectional shape as shown in Figure 2 below. The main and side channels are at a slope Se = 0.0004 and have n - 0.024. The side slopes are all 1:l. Calculate the maximum discharge which can be acoommodated in the main channel before flow spills onto the side channels. 3m Floodway Floodway -20 m- 5m- -25 m Figure 2- Question 2 (b)

Traffic and Highway Engineering
Traffic and Highway Engineering
5th Edition
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Garber, Nicholas J.
Chapter16: Highway Drainage
Section: Chapter Questions
Problem 13P
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2) b) An open channel has the cross-sectional shape as shown in Figure 2 below. The main and side channels are at a slope Se = 0.0004 and have n - 0.024. The side slopes are all 1:1. Calculate the maximum discharge which can be accommodated in the main channel before flow spills onto the side channels. 3m Floodway Floodway -20 m- 5m 5m- -25 m- Figure 2- Question 2 (b) e) During a high flow event, the water level rose to a depth of 3.0 m on the side channels. Calculate : i) The discharge for this flood event. ii) The energy coefficient a for the flood flow.
Transcribed Image Text:2) b) An open channel has the cross-sectional shape as shown in Figure 2 below. The main and side channels are at a slope Se = 0.0004 and have n - 0.024. The side slopes are all 1:1. Calculate the maximum discharge which can be accommodated in the main channel before flow spills onto the side channels. 3m Floodway Floodway -20 m- 5m 5m- -25 m- Figure 2- Question 2 (b) e) During a high flow event, the water level rose to a depth of 3.0 m on the side channels. Calculate : i) The discharge for this flood event. ii) The energy coefficient a for the flood flow.
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