(b)A channel has to be designed for drainage to carry flow from 200 km. If theflow/km' is 0.5 m'/sec/ km, determine the Trapezoidal Channel section using (i) thepermissible velocity method, (ii) the regime theory. The material size is 2 mm and So= 0.00002. Assuming other data, if missing.Comment also on your design outcomes based on two methods.

Answered: Image /qna-images/answer/aa3bda0f-db4a-4112-9130-cf9579659308.jpg

Answered: A channel has to be designed for…

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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Consider a watershed with a drainage area of 10 square miles and a mainstream length of 7.5 miles. The main channel extends from the watershed outlet to the point opposite the centre of gravity of the watershed over a distance of 3.5 miles. Given a time of concentration (Ct) of 1.5 hours and a dimensionless slope of the watershed (Cp) of 0.5, determine the standard synthetic unit hydrograph for this basin. What is the duration? Using Snyder’s method, calculate the 45-minute unit hydrograph parameter
Read the question carefully and give me answer according to the question
1. Measurements in a trapezoidal channel yield a flow rate of 100 m³/s, a flow depth of 3 m, a bottom width of 3 m, side slopes of 3:1 (H:V), and a longitudinal slope of 0.5%. The channel is observed to be lined with gravel-sized stones that are estimated to have a specific weight of 25 900 N/m³ and an angle of repose of 37°. (a) Calculate the median size of the stones on the perimeter of the channel. (b) Using the calculated stone size, determine whether you expect the channel to be stable in its current configuration. Assume a safety factor of 1, and neglect the effect of the longitudinal slope on the permissible shear stress. [For water, take 7 = 9789 N/m³, v = 1.00 x 10-6 m²/s]
You were assigned to describe the pore water pressure in Figure 1. It shows the cross-sectionof a homogenous compacted earth dam highlighting the flow behavior. Excessive rainfall hassaturated the embankment. Given the three points A, B and C. A. Which of the points will have the highest positive pore water pressure?B. Which of the points will have the lowest positive pore water pressure?
We are designing a culvert and a project criterion is to not have roadway overtopping. We need to calculate the TW, HW elevation, and maximum allowable total head loss (H) as a step in the design process of the culvert. What are the values of TW, and H using the information in the table below: Parameter Normal depth (d): Upstream invert or flow-line elevation: Length of culvert: Slope of culvert: Maximum HW elevation: value 5 ft 75ft 50 ft 0.002 85 ft
Answer in two decimal places please
(a) A flood drainage channel has to be designed to carry runoff from 200 km² area. If the flow per square kilometer is 0.5 m³/s/km², determine the flood drainage channel size using (i) the permissible velocity method, and (ii) tractive force method. The material size is 2 mm and S,=0.00002. Provide sufficient justification for assumptions and/or judgement used in your procedure. State clearly the design steps used in the design process. (b) The reservoir level upstream of a 30-m-wide spillway for a flow of 800 m³/s is at El. 250 m and downstream river level channel for this design flow is at El. 150 m. If the stilling basin width is the same as that of the spillway, compute the floor level of the stilling basin so that the jump is formed in the basin. Assume the losses in the spillway are negligible. What would be the basin invert level if one can use an end sill or one row of baffle blocks and an end sill? (c) A mountain creek with a flow rate of 100 ft/s passes through an eight-ft…

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