a- 30.1%6- The percent of groundwater to the total earth's water is:c-0.9%b- 1.2%d- 0.75%c- all are false7- The probability of a flood cqual to or grcater than 50 year flood, occurring at least one innext 50 years isa- 0.02b-0.636c-0.364d- 1.0e- all are false

Hear option (d) is correct that is 0.75% is the groundwater is available as a fresh water source on…

Answered: a- 30.1% 6- The percent of groundwater…

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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Question 4: The isohyets due to a storm in a watershed were calculated and the areas bounded by the isohyets were tabulated as below: Isohyets (inch) Area (mi^2) 10-8 30 8-6 140 4-6 80 2-4 180 0-2 20 Estimate the mean rainfall over the basin
68.Which of the following statements regarding floods is true ? Select one a. a 40 - year flood is generally of greater magnitude than a 80 - year flood b. a 200 - year flood has a 2 % chance of occurring in any one year c. if there is a 10 % probability of a flood of a certain height occurring in any one year it is called a 10 - year flood d . the recurrence interval of a flood of a certain height does not depell upon the width of the floodplain
WQI -0.22 SIDO+0.19 SIBOD+0.16 SICOD+01SSIAN + 0.16 SISS+ 0.12 SipH The result of water quality analysis on a raw river water are as follows: UTM Parameter Value Sub Indes (SI) Equation SICOD-99.1-1.33 X SICOD-10Be SIBOD-100.4-4.32 X SIBOD-108 e 01X SIAN - 100.5 - 1O5 X SIAN =94e -SX-2) SIAN- SISS-975e 01X SISS-71 e -0.01S X SISS-e Sipl-172-172X+ 5.02 X Sipl-242+95.5 X-667 X SipH--181 +24X-6.05 X Sipl- S36-7x+276 X COD: 35 mg/L, BOD: 7 mg/L, AN: 2.5 mg/L, SS: 475 mg/L, pH: 5, DO: 5 mg/L COD IfXS20 IfX>20 BOD Irxss AN Calculate the sub-index of ammoniacal nitrogen and acidity of the river water. are38 Q Zoom 20 and 57 B 20 and 69 C O and 69 O and 57
4. For the next section of river parameters, how deep would the river need to be in order for the flow to become turbulent? (Hint: what value does the Reynold's Number indicate flow becomes turbulent?) 19dmula blonys River is flowing at 0.05 m/s Water has a kinematic viscosity of 1x10-6 m²/s tot astonistsq griwellot et novi S Inoludtud 10 snimsl a won b) Calculate 2\10 s griwolai 19vill gash stavi
Question No. (1): A Dam is constructed on a river to control its water for irrigation the surface area of the lake (reservoir) created upstream the dam is 100 mile2, during a certain month, evaporation losses of reservoir are estimated to be 8 mm/day, inflow to the reservoir is 0.5 inch, the change in storage during this month is 1000 hectare. meter, seepage is 4 mm/day,, Irrigation water duty is 10m3/sec. Determine 1-The change of water depth in the reservoir 2- Seepage losses (in hectare. m) of the reservoir
X (d) What is the probability that a 5-vear flood will occur three times in a period of 10 years? What is the probability that it will occur at all? How many floods of this magnitude will occur, on average, during the 10 years?
How to characterize heterogeneous reservoirs
Problem 3.24 (page 119): The soil in a watershed has the following properties: 0, = 0.02, 0fe= 0.25, and 0 = 0.38. The watershed has a composite ARC II curve number of CN 80. A storm with a rainfall of 30 mm occurs in dormant season. During the five days before the storm begins, the total rainfall is 25 mm. Estimate the direct runoff from this storm using the MORE and SCS-CN models. %3D %3D %3D
The direction of groundwater flow and general direction groundwater may carry contamination cannot be determined using two wells (two groundwater level or piezometric surface measurements). Why? One of the following option is correct. a) Darcy's law requires more than two points. b) Groundwater energy surface is in 2-D. The characteristics of a 2-D surface must be defined by more than 2 points (at least 3). c) Since one well will show higher energy than another, a third well is needed to confirm that the flow direction is between the two wells. d) The premise of the question is not correct. The energy gradient can be estimated from two points and flow direction can be estimated as long as the distance between the two points is known. Fick's law requires more than two points
Design a sedimentation basin for a water treatment plant with the following specifications assuming it is required to supply a city with a population of 50,000 people: Rectangular or square basin • Depth: 7-18 ft ● . • Width: 10-50 ft Detention time: 4-8 hours Flow through velocity: <0.55 ft/min Overflow rate: 400-1,100 gal/day-ft² Draw a figure to show calculated dimensions. You may consider to use SI units in calculations. ● ● Hint: Overflow rate is Flow/Surface Area; Detention time is Volume of tank/Flow rate; and Depth= Volume/Surface area
PROBLEM 2 If you were to compare the water levels in wells A and East B, which well would have the higher water level? Well Well Well D A Well B Well How would you calculate the water level difference Lake Water Upper Aquifer Upper Aquitard between A and B? Middle Aquifer Lower Aquitand Which well has the higher water level, well A or Well Q? Lower Apuifer
WQI -0.22 SIDO 0.19SIBOD 16SICOD+01SSIAN +016 SISS 0.12Slp The sub-indices of several water quality parameters on a raw river water are as follows: Parameter Value Sub Indes S) Equation SICOD-99.I-133 X SICOD-103e COD: 92, BOD: 93, AN: 85, SS: 87, pH: 98, DO: 100 COD EXS20 IrX>20 SIBOD-1004-432 X SIBOD-108e 01X SIAN-100.S-105 X SIAN- 94 e -Sx-2) BOD AN Determine the WQI of the river water. r03

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a- 30.1% 6- The percent of groundwater to the total earth's water is: c-0.9% b- 1.2% d- 0.75% c- all are false 7- The probability of a flood cqual to or grcater than 50 year flood, occurring at least one in next 50 years is a- 0.02 b-0.636 c-0.364 d- 1.0 e- all are false