EXAMPLE 1: Determine the normal discharge for the channel shown in Fig 2.7a. The water surface in the left flood plain is 42m wide and that in the right flood plain is 26m. The manning roughness value for the flood plain is 0.10, while the Manning roughness value for the channel is 0.05 for the channel. The longitudinal slope of the channel is 0.0005. Solution:

EXAMPLE 1: Determine the normal discharge for the channel shown in Fig 2.7a. The water surface in the left flood plain is 42m wide and that in the right flood plain is 26m. The manning roughness value for the flood plain is 0.10, while the Manning roughness value for the channel is 0.05 for the channel. The longitudinal slope of the channel is 0.0005. Solution:

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Determine the slope of the channel bed, expressed in the unit of horizontal length to vertical length, given the cross-sectional area of 8 square meters, the wetted perimeter of 8 meters, a volumetric flow rate of 33.33 cubic meters per second, and a Manning's coefficient of 0.012, using the hydraulic principles and the Manning's equation for open channel flow.
A smooth transition section connects two open channels of the same width, as shown in Figure P10.15. The water depth decreases so that the ratio of the downstream to upstream depths Y2/Y1 = 0.5. If the upstream Froude number F1 = 0.35, determine the downstream Froude number F2, and the ratio h/Y1.
A trapezoidal channel has a bed width of 5 m, a side slope of 2.5:1 (H:V) and a flow depth of 3 m. The velocity = 1.2 m/s and the velocity head = 0.073 m i. Determine the flow area (m²) of this channel. ii. Determine the wetted perimeter (m) of this channel. iii. Determine the hydraulic radius (m) of this channel. iv. Determine the width (m) of flow across the surface of this channel. v. Determine the freeboard (mm) of this channel. vi. Determine the total channel depth (m). vii. Determine the discharge (m³/s) of this channel. viii. Determine the Froude number of the flow. ix. Comment on the state of flow.…
A trapezoidal channel has a bed width of 5 m, a side slope of 2.5:1 (H:V) and a flow depth of 3 m. The velocity = 1.2 m/s and the velocity head = 0.073 m i. Determine the flow area (m²) of this channel. ii. Determine the wetted perimeter (m) of this channel. iii. Determine the hydraulic radius (m) of this channel. iv. Determine the width (m) of flow across the surface of this channel. v. Determine the freeboard (mm) of this channel. vi. Determine the total channel depth (m). vii. Determine the discharge (m³/s) of this channel. viii. Determine the Froude number of the flow. ix. Comment on the state of flow.…
A trapezoidal channel with 3.0 bottom width and 1:1 side slope carries a discharge of 10?3 ? at a slope of 12cm/km. A hydraulic jump is formed in the channel with an initial depth of 0.6 m. Calculate the momentum function, the critical depth, and the conjugate depth.
A rectangular open channel, with a constant discharge of 32m3/s, has a smooth expansion from (1) to (2) as shown in figure Q2 in the flow direction. At (1) the channel is 3.6m wide and the water depth is 2.4m . At (2) the water depth is 0.8m. Determine the channel width at (2), stating any assumptions made.
The Hydraulic diameter of a equilateral triangularchannel is 5 cm, the side length is 10cm. The vertical height (h) is equal to a. 40 cm b. 12 cm c. 30 cm d. 15 cm
A flow of 30 m3 /s occurs in a trapezoidal channel having a base width of 3 m, side slopes 1 vertical to 2 horizontal. Determine the critical depth, yc.
There is a rectangular channel that will be excavated downstream of a dam after a stilling basin both with a width of 15 meters. The depth of the wather flow upstream of the dam is 4.27 meters and the discharge flow above the dam is 112.5 cubic meters per second. the channel wil be excavated in earth and n = .o25 and maintains a uniform flow depth under a subcritical flow regime. I need to determine 1. the bottom channel slope needed in the downstream channel and 2. the length of the stilling basin if the dissipation stucture starts at dissipated along the structure. The design should consider that the flow depth at the end of the still basin is similar to the flow depth in the channel. For a more realistic approach in the design, the head loss between the station upstream of the dam and the station at the beginning of the still basin is 10% of the velocity head observed at the beginning of the basin
A trapezoidal channel is 5.0 km long with the side slopes of Z-0.5 constructed in clay soil. Up to the first 2 km, the bed-width of the channel is 4.90 m and the depth of flow is 1.05 m. Thereafter, the bed- width and the depth are 4.0 m and 0.885 m, respectively, right up to the downstream end of the channel. Estimate the total seepage loss through the channel by Moles-Worth
A rectangular channel carries a discharge of 2 m/s per metre width. If the loss of energy in the hydraulic jump is found to be 2.75 m, determine the conjugate depths before and after the
In the case of a rectangular channel 3 m wide and 1 m deep, the value of Bazin's constant is 1.75 for earthen channel in rough condition. Calculate the value of the Chezy’s constant. For a bed slope of 1/2500, find the flow rate.