A concrete lined (n=0.013) trapezoidal channel has a bed slope of 0.00152 and it carries a discharge of 8 m³/s. What is the normaldepth based on the most hydraulically efficient section?Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer.abсd1.2 m1.4 m1.6 m1.8 m.

Trapezoidal channelManning coefficient (n) = 0.013Bed slope (S) = 0.00152 Discharge (Q) = 8 m3/s…

Answered: A concrete lined (n = 0.013)…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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A circular section channel 3m in diameter has a depth of flow of 1.0m and is laid to a gradient of 1:1000, and n = 0.012. a) compute the hydraulic radius of the channel. Blank 1 b) compute the rate of flow in the channel in m³/s. Blank 2 Blank 1 Add your answer Blank 2 Add your answer
The figure shown is a dewatering plan to build the foundations of an office building below the water table without the sheet-piling. Assume that all b = 6 meters and all 1 = 4 meters in all grids of the middle flow channel. Dewatering wells Marshy soils Ah =Sm Excavated site OL Ah = 2m Ah = 2m Ah = 2m Lowered WT a. What is the value of n? b. How many flow channels are in the figure? c. How many potential drops are in the figure? d. The potential drop at area 1 is: e. The potential drop at area 2 is: f. The potential drop at area 3 is: g. The average hydraulic gradient in each net is:
Problem 7: EGL and HGL (III) This cross-section shows steady incompressible flow in an open channel. Copy the figure, then add the EGL as a solid line, add the HGL as a dotted line, and indicate the vertical distance corresponding to the kinetic head. Ignore the dashed horizontal line. ▼ Subcritical Sluice gate 1/3 = (22) ¹3 b²g. Supercritical Ye= Hydraulic jump Subcritical L
2. A rectangular channel has a base width of 7m and filled with water at a depth of 0.8m with a Froude Number of 5 before conducting a hydraulic jump. a. Find the Froude Number after the jump. b. What is the head lost due to the jump?
Name. Q4 .No.. A sketch of a transformed flow net in x-direction under a dam is shown in Figure, the soil nas Kx- 4x10 ft/sec and k, = 1x10 ft/sec. use yw = 62.4 Ib/ft (a) Determine the flow rate under the dam, (b) Determine the porewater pressures at A and B, (c) Determine the natural length of the dam base 12 ft Concrete dam Water 4 ft 1.5 ft water 5 ft Impervious clay 1o %3D
The figure shown is a dewatering plan to build the foundations of an office building below the water table without the sheet-piling. Assume that all b = 6 meters and all 1 = 4 meters in all grids of the middle flow channel. Dewatering wells Marshy soils Ah =m Excavated site OL Ah = 2m Ah = 2m Ah = 2m Lowered WT a. What is the value of n? b. How many flow channels are in the figure? c. How many potential drops are in the figure? d. The potential drop at area 1 is: e. The potential drop at area 2 is: f. The potential drop at area 3 is: g. The average hydraulic gradient in each net is:
Onestion 2 : Choose the correct letter, A, B, C or D A 1 Esumate the flow velocity in m/s through a best hydraulic circular channel of 2 m diameter with a bed slope of 0.001 and n=0.012. 2 For a rectangular channel if the discharge per unit width= 10 m³/s.m, the critical velocity in m/s is? 3 For a rectangular channel if the flow velocity = 1.5 m/s, and the flow depth = 2m, what is the classification of this flow? 4 For a rectangular channel, if the Froude number = 1.5 and the initial depth=0.8 m, the depth after hydraulic jump occurs is: 5 At the exit flow under a sluice gate the depth of flow was 0.5 m, if y2=1.5 m, calculate the head loss across the jump 6 The pump curve of single pump is given by Hp = 15-100², if the system curve Hsu =20-20², estimate the flow delivered to the system by 3 pumps in series in m³/s 7 The pump curve of single pump is given by H₂=40-25Q², if the system curve HSH =20-20², estimate the flow delivered to the system by 3 pumps in parallel in m³/s What is…
2. Four reservoirs connection is shown below. Determine the discharges in each pipe using Manning's Equation withn = 0.012. Draw the final hydraulic gradient line (HGL). Pipe AX Length of pipe (m) 1500 Diameter of pipe (m) 0.30 0.25 BX 800 XY 400 0.30 500 1600 CY 0.20 DY 0.20 WS ELEV. = 300 m WS ELEV. = 150 m WS ELEV. = 100 m ELEV. = 75 m WS
You are in charge of evaluating a segment of aqueduct pipe (diameter: 30cm). You know that pt. A has a measured pressured of 500 kPa. You must : a) Determine the head-loss between points A and B if they are separated by 100m, that the pipe has a flow of 175 1/s and that the Hazen-Williams coefficient is 100 (see figure 3) b) Calculate the absolute roughness (&). Presume that the water temperature is 15oC. A A Figure 3 Aqueduct pipe c) We wish to limit head-loss to 10 kPa, all the while transporting the same flow between points A and B. To do this, it has been suggested that a second pipe could connect these two points (see figure 4). You must determine this second pipe's diameter knowing that the total length of this secondary pipe is 135m and has the same Manning coefficient as the first pipe. Neglect all local head-loss B Figure 4 Proposed secondary pipe (dotted line) B
Water flows at a depth of y1=0.4ft in a concrete channel which is 10ft wide. The discharge per unit width is 10ft2/sec. Estimate the height of the hydraulic jump that will be formed if bed slope is equal to 0.0 and 0.15 respectively.
In a circular channel 2.5meters in diameter, flowing below half full, the water surface width is 2.415meter in length. a.Compute the hydraulic radius. b.The channel is laid on a grade of 24.146meters per mile; compute its discharge using Manning’s formula withn= 0.025. c.For flow as in (b), compute the C value in the Chezy formula. d.Using C in (c), and for flow as in (b), compute the value of Kutter’s nin the Kutter’s C formula. Simplify your solution, no solution by calculator or shift solve. e.Compute the maximum velocity that may occur for the given circular channel using as in (d) and Manning’s formula.
Q. The hydraulic radius (m) for a circular pipe of diameter (D) behaving as open channel is given by ?

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