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Office: F-126, (Lower Basement), Katwaria Sarai, New Delhi-110 016
Phone: 011-41013406 Mobile: 81309 09220, 97118 53908
Email: [email protected], [email protected]
Web: iesmasterpublications.com, iesmaster.org
CIVIL ENGINEERINGESE TOPICWISE
CONVENTIONAL SOLVED PAPER-II
1995-2019
First Edition : 2016
Second Edition : 2017
Third Edition : 2018
Fourth Edition : 2019
Typeset at : IES Master Publication, New Delhi-110016
IES MASTER PUBLICATIONF-126, (Lower Basement), Katwaria Sarai, New Delhi-110016
Phone : 011-41013406, Mobile : 8130909220, 9711853908
E-mail : [email protected]
Web : iesmasterpublications.com
All rights reserved.
Copyright © 2019, by IES MASTER Publication. No part of this booklet may bereproduced, or distributed in any form or by any means, electronic, mechanical,photocopying, recording, or otherwise or stored in a database or retrieval system withoutthe prior permission of IES MASTER Publication, New Delhi. Violates are liable to belegally prosecuted.
Engineering Services Exam (ESE) is one of most coveted exams written by engineering studentsaspiring for reputed posts in the various departments of the Government of India. ESE is conducted bythe Union Public Services Commission (UPSC), and therefore the standards to clear this exam too arevery high. To clear the ESE, a candidate needs to clear three stages – ESE Prelims, ESE Mains andPersonality Test.
It is not mere hard work that helps a student succeed in an examination like ESE that witnesses lakhsof aspirants competing neck to neck to move one step closer to their dream job. It is hard work alongwith smart work that allows an ESE aspirant to fulfil his dream.
After detailed interaction with students preparing for ESE, IES Master has come up with this book whichis a one-stop solution for engineering students aspiring to crack this most prestigious engineering exam.The book includes previous years’ solved conventional questions segregated subject-wise along withdetailed explanation. This book will also help ESE aspirants get an idea about the pattern and weightageof questions asked in ESE.
IES Master feels immense pride in bringing out this book with utmost care to build upon the exampreparedness of a student up to the UPSC standards. The credit for flawless preparation of this bookgoes to the entire team of IES Master Publication. Teachers, students, and professional engineers arewelcome to share their suggestions to make this book more valuable.
Mr. Kanchan Kumar ThakurDirector–IES Master
PREFACE
1. Environmental Engineering ................................................................................ 001 – 116
2. Soil Mechanics................................................................................................... 117 – 267
3. Engineering Geology .......................................................................................... 268 – 269
4. Fluid Mechanics ................................................................................................. 270 – 381
5. Open Channel Flow ........................................................................................... 382 – 437
6. Hydraulic Machine .............................................................................................. 438 – 485
7. Engineering Hydrology ....................................................................................... 486 – 557
8. Irrigation Engineering ......................................................................................... 558 – 632
9. Surveying ........................................................................................................... 633 – 691
10. Highway Engineering ......................................................................................... 692 – 764
11. Railway Engineering .......................................................................................... 765 – 800
12. Airport Engineering............................................................................................. 801 – 816
13. Port and Harbour ............................................................................................... 817 – 824
14. Tunnel Engineering ............................................................................................ 825 – 828
CONTENT
UNIT-1 ENVIRONMENTAL ENGINEERING
SYLLABUS(a) Water Supply Engineering: Sources, Estimation, quality standards and testing of water and their treatment;
Rural, Institutional and industrial water supply; Physical, chemical and biological characteristics andsources of water. Pollutants in water and its effects. Estimation of water demand; Drinking water Standards,Water Treatment Plants, Water distribution networks.
(b) Waste Water Engineering: Planning & design of domestic waste water, sewage collection and disposal;Plumbing Systems. Components and layout of sewerage system; Planning & design of Domestic Waste-waterdisposal system; Sludge management including treatment; disposal and re-use of treated effluents; Industrialwaste waters and Effluent Treatment Plants including institutional and industrial sewage management.
(c) Solid Waste Management: Sources & classification of solid wastes along with planning & design of itsmanagement system; Disposal system, Beneficial aspects of wastes and Utilization by Civil Engineers.
(d) Air, Noise pollution and Ecology: Concepts & general methodology.
CONTENTS
1. Water Demand, Its Source & Conveyance ..................... ............................ 01 – 092. Quality Parameters of Water ............................................ ....................... 10 – 143. Treatment of Water ........................................................... ..................... 15 – 364. Distribution System ............................................................. ................... 37 – 395. Waste Water Characteristics ...................................................................... 40 – 436. Disposal of Sewage Effluent ........................................................................ 44 – 537. Design of Sewerage System and Sewer Appurtenances............................... 54 – 658. Sewage Treatment ..................................................................................... 66 – 889. Solid Waste Management ......................................................................... 89 – 10110. Air Pollution ............................................................................................ 102 – 11111. Noise Pollution ........................................................................................ 112 – 11312. Ecology .................................................................................................. 114 – 116
2 ESE Topicwise Conventional Solved Paper-II 1995-2019 Civil Engineering
1
CHAPTER1
WATER DEMAND, ITS SOURCE& CONVEYANCE
Q-1: For a town with a population of 2 lakhs, a water supply scheme is to be designed. The maximumdaily demand may be assumed as 200 litre/capita/day. The storage reservoir is situated 5 km awayfrom the town Assuming loss of head from source to town as 10 m and coefficient of friction for thepipe material as 0.012, recommend the size of supply main 50% of daily demand has to be pumpedin 8 hours for the proposed scheme. [12 Marks IES-1996]
Sol. Given data:Population = 200000
Maximum daily demand = 200 litre/capita/dayLength of pipe, L = 5 km = 5000 m
Head loss, hL = 10 mCoefficient of friction for pipe material,
f’ = 0.012Friction factor, f = 4f = 0.048
Discharge for which supply main is to be designed (Q) is the 50% of daily demand being pumped in 8 hrs.Total daily demand = 200000 × 200 = 4× 107 litres
Q =74 10 0.5
8 60 60
= 694.44 lit/sec.
= 0.694 m3/sec.As per Darcy Weisbach equation,
hL = 22fLV fL Q / A
2gD 2gD
and A =2D
4
hL =2
2 58fLQ
gD
D5 =2
28 0.048 5000 0.694
9.81 10
D = 0.991 m
Thus adopt size of supply main as 1m.
Q-2: Water has to be supplied to a town with one lakh population at the rate of 150 litres/capita/ day froma river 2000 m away. The difference in elevation between the lowest water level in the sump andreservoir is 40 m. If the demand has to be supplied in 8 hours, determine the size of the main andthe brake horse power of the pumps required. Assume maximum demand as 1.5 times the averagedemand. Assume f = 0.03, velocity in the pipe 2.4 m/s and efficiency of pump 80 percent.
[15 Marks IES-1997]
IES MASTER Publication
ENVIRONMENTAL ENGINEERING 3Civil Engineering
Sol. Data given:Population of town = 100000
Consumption per capita per day = 150 litre/capita/dayLength of pipe, L = 2000 m
Friction factor, f = 0.03Velocity in pipe, v = 2.4 m/s
Efficiency, = 80%
Calculation for size of the supply main.
Average daily demand = 100000 × 150 = 15 × 106 litre/dayThis has to be supplied in 8 hours
Average daily discharge =6 315 10 10
8 60 60
= 0.5208 m3/s
Maximum discharge, Q = 1.5 × Average discharge = 1.5 × 0.5208= 0.781 m3/s
Let the diameter of supply main = DWe know that,
Discharge, Q = Area × Velocity (v)
2D 2.4
4
= 0.781
D = 0.644 m
Calculations for Brake Horse Power (BHP) of pump :
Using Darcy Weisbach Equation
h f =2fLv
2gD = 20.03 2000 2.4
2 9.81 0.644
h f = 27.352 m
Total head against which pump will lift the water,,H = h + hf = 40 + 27.352
i.e. H = 67.352 m
h = 40m
L = 2000 m
hf
Power required = QH
