Given: Waterval catchment (A = 120 km²) shown in Fig. 1. The slope of the watershed is given in Fig. 2.The length of the longest watercourse = 2.5 kmChart Title100A = 35%ForestSilty loamA = 40%FarmlandClay80602040A = 25%20PastureоSandy loam050010001500200025003000Figure 1Figure 22.1. Calculate the slope of the longest watercourse using:(a) Equal Area Method(b) 1085 method2.2. Calculate the intensity and flood peaks corresponding to a return periods of 10, 50 and 70 years usingthe following methods:(a) Rational Formula(b) Standard Design Flood(c) Briefly explain the difference between the two methods. Comment theapplicability of Rational Formula for the catchment.

Answered: Image /qna-images/answer/e3c556b5-fd1a-4b0f-91b5-15bcee0dc137.jpg

Answered: Given: Waterval catchment (A = 120 km²)…

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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Show all your work, including the given information, equations, and your assumptions (if applicable). Circle or box your answers and include units! 3.a The specific storage of a confined aquifer is 5x10³ m. If the aquifer is 50 m thick, how much water (m²) would the aquifer produce if the piezometric surface is lowered by 50 m over an area of 50 km²? b. A confined aquifer has a source of recharge as shown in Figure below. The hydraulic conductivity of the aquifer is 100 m/d and its porosity is 0.35. The piezometric head in two wells 1000 m apart is 75 m and 70 m, respectively, from the common datum. The average thickness of the aquifer is 50 m and the average width is 5 km. Determine the rate of flow (m³/d) through the aquifer. Recharge 44444 1000 m 50m
Topic: Quantity surveying 2.) The geometric method breaks the excavation into geometric shapes and calculates the volume for each of the shapes. true or false 3.) The data needed in estimating the roofing material are their effective widths and length in which they are available in the market. true or false 4. Because most equipment is not used on a project for an entire year, the costs must be converted to an hourly, weekly, or monthly cost. true or false
Example 2: An earthen canal has to irrigate 24,000 ha of Rabi (wheat). If duty at head is 400 ha/cumec, determine the dimensions and the bed slope of the canal by Manning's formula. Assume (B/D) ratio as 6, N= 0.025, side slope = 1.5:1 and permissible velocity of 0.80 m/s.
Rainfall depth over a watershed is monitored through six numbers of well distributed rain gauges. Gauged data are given below Rain gauge Number: Rainfall depth (mm): Area of Thiessen Polygon (× 104 m²):95 100 98 80 85 92 The Thiessen mean value (in mm, up to one decimal place) of the rainfall is 1 2 3 4 5 6 470465435525480510
The storage in the reach of a stream has been studied. The values of x and K in Muskingum equation have been identified as 0.28 and 1.6 days. If the inflow hydrograph to the reach is as given below, compute the outflow hydrograph. Assume the outflow from the reach at 1 = 0 as 3.5 m³/s. Time (h) Inflow (m³/s) 6 12 18 24 30 35 55 92 130 160 140
Given the reservoir and sections shown below, determine what is asked for. Show complete and detailed solutions. Draw a figure also.
Determine the seasonal consumptive use in (cm) from the following data by the modified Blaney -Criddle equation, take ke=0.7. November December Month January February Mean temperature (T°C) 20 16 12 13 % monthly daylight hours 7.19 7.15 7.3 7.03
A well produces water from a confined aquifer at a rate of 550 m3/day for a period of 30 days, and then the pumping rate decreases to 300 m³/day for another 20 days. What is the resulting drawdown at the well at the end of this 50 day pumping period if T = 50 m²/day, S = 0.001, and the well radius in 0.2 m?
The water balance is defined by the general hydrologic equation, which is basically a statement of the law of conservation of mass applied to the hydrologic cycle. In its simplest form, this equation reads I= O + AS. where l is total inflow. O is total outfiow and AS is change in storage. In a month of 30 days, a lake received an average inflow of 6 m^3/s from surface runoff. In that same period, outfilow from the lake had an average value of 6.5 m^3/s. Further, the lake received a rainfall of 145 mm. evaporation of 6.10 cm and seepage loss was 2.5 cm in that month. The average lake surface is 5000 ha. Compute for the change in water elevation in the lake at the end of that month in centimeters. If it is a LOSS, indicate this by preceding your answer with a negative sign. "

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