ssc-jesome of the psu's and state governing organisations have been asking questions in their...

SSC-JE

Junior Engineer CIVIL ENGINEERING

SOLUTIONS

Previous Paper (Objective Solved Book)

Preface:

This book is an essential to all Civil Engineering (Diploma/Degree) students. It is very important to know the type of questions asked in previous years, its difficulty level and topics which are frequently asked in exam of SSC Junior Engineer (JE).

Real aspirants must practice these questions and resort to memorize the theoretical concepts, important formulae and facts of the topics. Every year few questions seems to be repeated directly or indirectly, so practice of these questions are beneficial.

This book is designed to provide in-depth knowledge and concise understandings to qualify JE/AE level examinations. It presents topic wise solutions in easy language with intend of error free and authentic solutions. This book is well stocked with detailed solutions in easy and illustrative manner, many alternate solutions are given for suitable problems to minimize the time and to develop skills to cross-check with short cuts / tricks.

Some of the PSU's and state governing organisations have been asking questions in their exams from SSC JE previous year’s papers. So, practicing of this book is the need of day. This book will work out to be an indispensable tool for JE/AE aspirants.

Readers are requested to intimate any errors and any other useful suggestions to improve this work for the next edition.

Technical Team (Civil Engineering)

Engineers Institute of India

This book is dedicated to all

Civil Engineers preparing for

SSC-JE/AE & State Services Examinations

2019 by Engineers Institute of India

ALL RIGHTS RESERVED. No part of this work covered by the copyright herein may be reproduced, transmitted, stored or used in any form or by any means graphic, electronic, or mechanical & chemical, including but not limited to photocopying, recording, scanning, digitizing, taping, Web distribution, information networks, or information storage and retrieval systems.

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SSC JE-Junior Engineer Exam Pattern

The standard of the questions in engineering subjects will be approximately of the level of Diploma in Engineering (Civil/ Electrical/ Mechanical/Electronics). Staff Selection Commission of India will be conduct this exam in TWO Stage.

Paper Sections Maximum Marks

Duration

Stage-1 Paper - I

General Awareness 50 2 Hours

General Intelligence and Reasoning 50

Part A- General Engineering (civil & structural)

100

Part B- General Engineering (electrical)

Part C- General Engineering (mechanical)

Stage-2 Paper - II

Part A- General Eng. (civil & structural) 300 2 Hours Part B- General Eng. (electrical)

Part C- General Eng. (mechanical)

Stage-1 Total Questions Type of Questions Total Marks Negative Marking

200 MCQ 200 0.25

Stage-2 Total Questions Type of Questions Total Marks

23-24 Subjective 300 Minimum qualifying marks in Paper-I and Paper-II are as follows: UR : 30% OBC/ EWS : 25% Others : 20%

• Based on the normalized marks scored in the (Paper-I) i.e. Computer Based Examination, candidates will be shortlisted, category-wise, to appear in Paper-II.

• Based on the performance in Paper-I+Paper-II, candidates will be shortlisted for Document Verification.

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SYLLABUS: CIVIL ENGINEERING Building Materials : Physical and Chemical properties, Classification, Standard Tests, Uses and manufacture/quarrying of materials e.g. building stones, silicate based materials, Cement (Portland), Asbestos products, Timber and Wood based Products, Laminates, bituminous materials, Paints, Varnishes.

Estimating, Costing and Valuation : Estimate, Glossary of technical terms, Analysis of rates, Methods and unit of measurement, Items of work – Earthwork, Brick work (Modular & Traditional bricks), RCC work, Shuttering, Timber work, Painting, Flooring, Plastering. Boundary wall, Brick building, Water Tank, Septic tank, Bar bending schedule. Centre line method, Mid-section formula, Trapezodial formula, Simpson’s rule. Cost estimate of Septic tank, flexible pavements, Tube well, isolated and combined footings, Steel Truss, Piles and pile-caps. Valuation – Value and cost, scrap value, salvage value, assessed value, sinking fund, depreciation and obsolescence, methods of valuation.

Surveying: Principles of surveying, measurement of distance, chain surveying, working of prismatic compass, compass traversing, bearings, local attraction, plane table surveying, theodolite traversing, adjustment of theodolite, Levelling, Definition of terms used in levelling, contouring, curvature and refraction corrections, temporary and permanent adjustments of dumpy level, methods of contouring, uses of contour map, tachometric survey, curve setting, earth work calculation, advanced surveying equipment.

Soil Mechanics: Origin of soil, phase diagram, Definitions- void ratio, porosity, degree of saturation, water content, specific gravity of soil grains, unit weights, density index and interrelationship of different parameters, Grain size distribution curves and their uses. Index properties of soils, Atterberg's limits, ISI soil classification and plasticity chart. Permeability of soil, coefficient of permeability, determination of coefficient of permeability, Unconfined and confined aquifers, effective stress, quick sand, consolidation of soils, Principles of consolidation, degree of consolidation, pre-consolidation pressure, normally consolidated soil, e-log p curve, computation of ultimate settlement. Shear strength of soils, direct shear test, Vane shear test, Triaxial test. Soil compaction, Laboratory compaction test, Maximum dry density and optimum moisture content, earth pressure theories, active and passive earth pressures, Bearing capacity of soils, plate load test, standard penetration test.

Hydraulics: Fluid properties, hydrostatics, measurements of flow, Bernoulli's theorem and its application, flow through pipes, flow in open channels, weirs, flumes, spillways, pumps and turbines. Irrigation Engineering : Definition, Necessity, Benefits, III effects of irrigation, types and methods of irrigation. Hydrology – Measurement of rainfall, run off coefficient, rain gauge, losses from precipitation – evaporation, infiltration, etc. Water requirement of crops, duty, delta and base period, Kharif and Rabi Crops, Command area, Time factor, Crop ratio, Overlap allowance, Irrigation efficiencies. Different type of canals, types of canal irrigation, loss of water in canals. Canal lining – types and advantages. Shallow and deep to wells, yield from a well. Weir and barrage, Failure of weirs and permeable foundation, Slit and Scour, Kennedy’s theory of critical velocity. Lacey’s theory of uniform flow. Definition of flood, causes and effects, methods of flood control, water logging, preventive measures. Land reclamation, Characteristics of affecting fertility of soils, purposes, methods, description of land and reclamation processes. Major irrigation projects in India.

Transportation Engineering: Highway Engineering – cross sectional elements, geometric design, types of pavements, pavement materials – aggregates and bitumen, different tests, Design of flexible and rigid pavements – Water Bound Macadam (WBM) and Wet Mix Macadam (WMM), Gravel Road, Bituminous construction, Rigid pavement joint, pavement maintenance, Highway drainage. Railway Engineering – Components of permanent way – sleepers, ballast, fixtures and fastening, track geometry, points and crossings, track junction, stations and yards. Traffic Engineering – Different traffic survey, speed-flow-density and their interrelationships, intersections and interchanges, traffic signals, traffic operation, traffic signs and markings, road safety. Environmental Engineering: Quality of water, source of water supply, purification of water, distribution of water, need of sanitation, sewerage systems, circular sewer, oval sewer, sewer appurtenances, sewage treatments. Surface water drainage. Solid waste management – types, effects, engineered management system. Air pollution – pollutants, causes, effects, control. Noise pollution – causes, health effects, control. Structural Engineering Theory of structures: Elasticity constants, types of beams - determinate and indeterminate, bending moment and shear force diagrams of simply supported, cantilever and over hanging beams. Moment of area and moment of inertia for rectangular & circular sections, bending moment and shear stress for tee, channel and compound sections, chimneys, dams and retaining walls, eccentric loads, slope deflection of simply supported and cantilever beams, critical load and columns, Torsion of circular section. Concrete Technology: Properties, Advantages and uses of concrete, cement aggregates, importance of water quality, water cement ratio, workability, mix design, storage, batching, mixing, placement, compaction, finishing and curing of concrete, quality control of concrete, hot weather and cold weather concreting, repair and maintenance of concrete structures. RCC Design: RCC beams-flexural strength, shear strength, bond strength, design of singly reinforced and doubly reinforced beams, cantilever beams. T-beams, lintels. One way and two way slabs, isolated footings. Reinforced brick works, columns, staircases, retaining walls, water tanks (RCC design questions may be based on both Limit State and Working Stress methods). Steel Design: Steel design and construction of steel columns, beams roof trusses plate girders.

Contents

1. THEORY OF STRUCTURES ………………………. 01-97 1) Properties of Materials Simple Stress and Strains Transformations,

Theories of Failure 2) Shear Force and Bending Moment 3) Bending Stresses and Shear Stresses 4) Deflection of Beams 5) Torsion of Shafts and Pressure Vessels 6) Columns, Shear Center and Miscellaneous

2. RCC DESIGN ………………………………………… 98-142

1) Introduction to W.S.M & L.S.M 2) Shear Bond Anchorage, Torsion, Beams, Stair Case, Retaining

Walls And Water Tanks 3) Footing, Columns, Beams, Slabs, Prestressed Concrete

3. STEEL DESIGN …………………………………….. 143-187

1) Structural Connections (Riveted, Bolted and Welded) 2) Tension, Compression and Flexural Members 3) Plate Girders, Industrial Roofs and Miscellaneous

4. ESTIMATING, COSTING AND VALUATION… 188-207

1) Estimates 2) Rate Analysis 3) Valuation 4) Miscellaneous

5. BUILDING MATERIALS …………………………. 208-278

1) Stones 2) Lime 3) Cement 4) Bricks 5) Timbers 6) Paint And Miscellaneous 7) Concrete Technology

6. ENVIRONMENTAL ENGINEERING …………… 279-296

1) Water Demand and Population Forecasting 2) Quality and Control of Water Supply, Water Purification 3) Sewage Characteristics and Design of Sewer and Appurtenances 4) Treatment and Disposing of Sewage 5) Air and Noise Pollution

7. HYDRAULICS ……………………………………….. 297-336

1) Fluid Properties, Hydrostatic Forces, Buoyancy and Floatation 2) Fluid Kinematics and Dynamics & Flow Measurements 3) Flow Through Pipes and Dimensional Analysis 4) Open Channel Flow 5) Hydraulic Machinery

8. SOIL MECHANICS …………………………………. 337-367

1) Introduction to Soil And Its Properties 2) Classification of Soil 3) Compaction and Consolidation 4) Earth Pressure Theory, Stability Analysis Of Slopes, Soil Stabilization and

Soil Exploration 5) Soil Foundation Engineering

9. TRANSPORTATION ENGINEERING ………….. 368-384

1) Introduction to Highway Development and Geometric Design 2) Traffic Engineering 3) Highway Materials, Pavement Design and its Maintenance 4) Railways and Airport

10. SURVEYING ………………………………………….. 385-430

1) Fundamentals of Surveying and Linear Measurements 2) Theodolites, Compass Surveying, Transverse Surveying, Plane Table

Surveying and Contouring 3) Levelling 4) Tacheometric Surveying, Curves and Miscellaneous

11. IRRIGATION ENGINEERING ……………………. 431-441

1) Water requirement of Crops 2) Hydraulic structures 3) Hydrology and Miscellaneous

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1. Theory of Structures SSC-JE Civil Engineering [1]

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CHAPTER-1 Theory of Structures-TOS

1. Properties of Materials SimpleStress and Strains

Transformations, Theories ofFailure

1. The property of a material by which it can bedrawn into smaller section by application oftension is called(a) Plasticity (b) Ductility(c) Elasticity (d) Malleability

[SSC-JE : 2007]2. Every material obeys. Hooke’s law within its

(a) Elastic limit(b) Plastic limit(c) Limit of proportionality(d) None of the above

[SSC-JE : 2008]3. If a uniform bar is supported at one end in a

vertical direction and loaded at the bottomend by a load equal to the weight of the bar,the strain energy as compared to that due toself weight will be(a) Same (b) half(c) Twice (d) thrice

[SSC-JE : 2008]

4. For a given material, if E, N and1

mare

Young’s Modulus of rigidity and Poisson’sRatio then

(a) E = 2N1

1m

(b) E = 2N1

1m

(c)2N

E1

1m

(d)1

E1

2N 1m

[SSC-JE : 2008]5. The ratio between stress and strain is called

as(a) Modulus of elasticity(b) Modulus of rigidity(c) Bulk modulus(d) None of the above

[SSC-JE : 2009]

6. The relation between E (modulus ofelasticity) and N (shear modulus) is given by(a) E= N (1–2 )(b) E= 2N (1+ )(c) E= 3N (1–2 )(d) None of the above

[SSC-JE : 2009]

7. The % of elongation of test piece undertension indicates its(a) Brittleness(b) Malleability(c) Stiffness(d) Ductility [SSC-JE : 2009]

8. The limit of Poisson’s ratio is :(a) 0.25 (b) 0.15(c) 0.50 (d) 0.65

[SSC-JE : 2010]

9. Ductility of which of the following is themaximum?(a) Mild steel (b) Cast iron(c) Wrought iron(d) Pig iron

[SSC-JE : 2010]10. Strain, energy stored in a solid given as :

(a) volume (b) area of cross section (c) 0.5 I(d) 0.5 I

[SSC-JE : 2010]11. Relation between Young’s modulus (E) and

modulus of rigidity (N) is given as(a) E 3N (1 ) (b) E 2N (1 ) (c) E 2N (1 ) (d) E 3N (1 2 )

[SSC-JE : 2010]

12. The ratio of normal stress to volumetricstrain in defined as(a) Young’s modulus(b) Bulk modulus(c) Rigidity modulus(d) Tangent modulus

[SSC-JE : 2011]

13. A material is called ductile if it(a) has little plastic elongation range(b) has long plastic elongation range(c) could be hammered into a very thin sheet(d) shows large elastic strain

[SSC-JE : 2011]



14. The moment of inertia of the cross-section

about X-X axis is(a) D b /3 3 (b) 3D b/12(c) 3Db /3 (d) 3Db /12

[SSC-JE : 2011]

15. Poisson’s ratio is defined as(a) longitudinal strain/lateral strain(b) lateral strain/longitudinal strain(c) lateral strainlongitudinal strain

(d)1

2(lateral strain) (longitudinal strain)

[SSC-JE : 2011]

16. Modulus of rigidity is expressed as(a) compressive stress/compressivestrain(b) tensile stress/tensile strain(c) shear stress/shear strain(d) stress/volumetric strain

[SSC-JE : 2011]

17. Hooke’s law is valid up to(a)Limit of proportionality(b)Ultimate point(c)Elastic limit(d)Yield point

[SSC-JE : 2012]

18. The ability of a material to absorb energy tillthe elastic limit is known as(a) Resilience (b) Ductility(c) Elasticity (d) Malleability

[SSC-JE : 2012]

19. Out of the following, which is least elastic?(a) Silver (b) Rubber(c) Iron (d) Copper

[SSC-JE : 2012]

20. A bar, L metre long and having its area ofcross-section A, is subjected to graduallyapplied tensile load W. The strain energystored in the bar is given by

(a)W L

AE

2

(b)2W L

2AE

(c)WL

2AE(d)

WL

AE[SSC-JE : 2012]

21. The predominant effect of an axial tensileforce on a helical spring is(a) Compression (b) Twisting(c) Bending (d) Tension

[SSC-JE : 2012]

22. Strain energy per unit volume of a solidcircular shaft under axial tension is

(a)2

8E

(b)

2

16E

(c)2

2E

(d)

2

4E

[SSC-JE : 2012]

23. For a beam carrying a uniformly distributedload, the strain energy will be maximum incase the beam is(a) Propped cantilever(b) Fixed at both ends(c) Cantilever(d) Simply supported

[SSC-JE : 2012]

24. From a circular plate of diameter 6.0 cm, acircle is cut out whose diameter is a radius ofthe plate. The distance of centre of gravity ofthe remainder from the centre of circularplate is(a) 5.0 cm (b) 1.5 cm(c) 1.0 cm (d) 0.5 cm

[SSC-JE : 2013]

25. The ability of a material to absorb energy tillthe breaking or rupture takes place is knownas(a) Hardness (b) Toughness(c) Brittleness (d) Softness

[SSC-JE : 2013]

26. Poisson’s ratio () is defined as the ratio of(a) axial strain to transverse strain(b) axial strain to shear strain(c) transverse strain to axial strain(d) shear strain to axial strain

[SSC-JE : 2013, 2014]27. Strain energy due to axial deformation is

given by where resultant stressP axial stress deformation modulus of elasticity

(a) (b) P

(c)2

2E

(d)

1P

2



[SSC-JE :2014]28. A linear force-deformation relation is

obtained in materials(a) having elastic stress-strain property(b) having plastic stress-strain property(c) following Hooke’s law(d) which are rigid elastic materials

[SSC-JE :2014]

29. The property of a material by which it can bebeaten or rolled into plates, is called(a) malleability (b) ductility(c) plasticity (d) elasticity

[SSC-JE :2014]

30. The property of a material by which it getspermanent deformation under a load which isnot recovered after removal of load is called(a) elasticity (b) brittleness(c) ductillity (d) plasticity

[SSC-JE :2014]

31. Strain energy due to sudden axial load isgiven by: : resultant stressP: Axial load: detornator: strainE :modulous of elasticity

(a)1

P2 (b) .

(c) P (d)E

2

2[SSC-JE :2014]

32. The ratio of normal stress to normal strainwithin elastic limits is called :(a) Young’s modulus(b) Shear modulus(c) Poisson’s ratio(d) Bulk modulus

[SSC-JE :2014]33. Which of the following has least carbon

content?(a) Wrought iron (b) cast iron(c) mild steel (d) pig iron

[SSC-JE :2014]

34. Total number of elastic isotropic material are(a) 2 (b) 3 (c) 4 (d) 5

[SSC-JE : 2015]

35. Creep of a material is(a) not being ductile(b) to become brittle

(c) disappearance of deformation on removalof load(d) continued deformation with time undersustained loading

[SSC-JE : 2015]

36. Which of the following is relatively ductilematerial(a) High carbon steel(b) Bronze(c) Mild steel(d) Cast iron

[SSC-JE : 2015]37. One cubic metre of mild steel weight about

(a) 1000 kg (b) 3625 kg(c) 7850 kg (d) 12560 kg

[SSC-JE : 2015]38. In Brinell Hardness test, the type of indentor

used is(a) Hard steel ball(b) Diamond cone(c) Mild steel ball(d) Hard steel cone

[SSC-JE : 2015]39. Percentage increase of carbon in steel,

decreases its(a) Hardness (b) ductility(c) Strength (d) brittleness

[SSC-JE : 2015]40. Which of the following materials is expected

to have the least value of Young’s modulusof elasticity?(a) Wood (b) Copper(c) Glass (d) Aluminium

[SSC-JE :2017]41. The Weight of 10 mm diameter mild steel

rod per metre length is equal to(a) 0.22 kg (b) 0.32 kg(c) 0.42 kg (d) 0.62 kg

[SSC-JE :2017]

42. Specifications for the hold fasts are given interms of(a) Number (b) Weight(c) Volume (d) Length

[SSC-JE :2017]

43. Match List -1 with List – 2List-1

1. Young Modulus2. Poisson’s Ratio3. Bulk Modulus4. Rigidity Modulus

1. Theory of Structures (Solutions) SSC-JE Civil Engineering [24]


CHAPTER-1 Theory of Structures (Solutions)

1. Properties of Materials Simple Stress and Strains Transformations,Theories of Failure (Answer Key)

1 2 3 4 5 6 7 8 9 10b c d a a b d c a d11 12 13 14 15 16 17 18 19 20c b b d b c a - b b

21 22 23 24 25 26 27 28 29 30b c c d b c d - a d31 32 33 34 35 36 37 38 39 40c a a a d c c a b a

41 42 43 44 45 46 47 48 49 50d - a a c d - c b b51 52 53 54 55 56 57 58 59 60c d d d a a d d a a

61 62 63 64 65 66 67 68 69 70a a d b a d b d d d71 72 73 74 75 76 77 78 79 80c c a a a a a a b b

81 82 83 84 85 86d d b d c c

2. Shear Force and Bending Moment (Answer Key)1 2 3 4 5 6 7 8 9 10d d d a c - d b c c11 12 13 14 15 16 17 18 19 20b d a d a a b a c c21 22 23 24 25 26 27 28 29 30c b d c c c a c c d

31 32 33 34 35 36 37c a a c b c b

3. Bending Stresses and Shear Stresses (Answer Key )1 2 3 4 5 6 7 8 9 10c c c c d b d c d b

11 12 13 14 15 16 17 18 19 20c d d b a a b b a c

21 22 23 24 25 26 27 28 29 30a b d b c b a c d d31 32c a



4. Deflection of Beams (Answer Key)1 2 3 4 5 6 7 8 9 10c d d a b a c b d b

11 12 13 14c c - d

5. Torsion of Shafts and Pressure Vessels (Answer Key)1 2 3 4 5 6 7 8 9 10c a c a a b d a c d

11 12 13 14 15 16 17 18 19

c b a c a a c c d

6. Columns Shear Center and Miscellaneous (Answer Key)1 2 3 4 5 6 7 8 9 10d d a c c b a d d d11 12 13 14 15 16 17 18 19 20b c b c c b d b b b21 22 23 24 25 26 27 28 29 30d a a c c c b a c d31 32 33 34 35 36 37 38 39 40d a b b c b b c b b41 42 43 44 45 46 47 48 49 50a ,c c b b c b d a a b51 52 53 54 55 56 57 58 59 60a b d d c d d b d c61 62 63 64 65 66 67 68 69 70b c a c b a a a, d a b71 72 73b a c



SOLUTIONS

1. Properties of Materials, Simple Stress and Strains, Transformations, Theories ofFailure (Solutions)

1. (b)Plasticity: It is the property of material by which it undergoes inelastic strain.Ductility: It is the property of material by which material can be drawn out longitudinally toreduced section, under the action of tensile force a ductile material. It posses a high degree ofplasticity and strength.Elasticity: It is the property of material by which a material deformed under the load and enable toreturn to its original dimension when load is removed.Malleability: It is the property of material that exhibit large deformation is all direction withoutrupture. A malleable material express high degree of plasticity but it is not necessary to have greatstrength.

2. (c)Hooke’s law: within the elastic limit stress is directly proportional to strain

σ=EWhere stress

Stress, E Modules of elasticity3. (d)

Uniform bar supported at one and loaded at bottom (Load equal to weight of the bar)

S.E. (Strain energy)1

2 P

2

1

2

1

1. . ( )

2

1. .

2

2

P A

and L andE

S E A LE

S E U volumeE

W A

WU volume

AEStrain energy stored due to its own weight (W)

20

1

2

L

x xU P

where x xP m g

.

{ }

A xg

Ax g



2 22

20 0

1 ( )

2 2

xx

L L

m dx

AE

Ax AU x dx

AE E2 3

2

2

2

A LU

2E 3

Wso U volume

6AE

W mg

21

22

U (W / 2AE)*volumeRatio =

U (W / 6AE)*volume

1

2

U3

U

4. (a)1

E = 2C 1+m

5. (a)Modulus of elasticity is the ratio of longitudinal stress to longitudinal strain.

E

where, σ = longitudinalstress= longitudinalstrain

E = modulusof elasticity

Modulus of rigidity is the ratio of shear stress to shear strain,

TC

T

where, shear stress

shear strain

C modulus of rigidity

Bulk modulus is the ratio of direct shear stress to volumetric strain

pk – v

v

where, p compreinvestren

vvolumetricstrain

vk bulk modulus

6. (b) Relation b/w E (modulus of elasticity) and N (shear modulus is given by E 2N (1 ) where,→

Poisson’s ratio. Relation b/w E (modulus of elasticity) and K (bulk modulus is given by E 3k (1 – 2 ) )

7. (d) Ductility is the measure of the extent to which a material will yield before fracture Ductile material is weaker in shear If post elastic strain (P.E.S) is greater than, 5% then material is called ductile material. Lack of ductility is called brittleness If P.E.S is less than 5% than material is called brittle.

2. RCC Design SSC-JE Civil Engineering [98]


CHAPTER-2 RCC DESIGN

1. INTRODUCTION TO W.S.M &L.S.M

1. An RCC beam can have maximum tensionreinforcements as(a) 6% bD (b) 2% bD(c) 3% bD (d) 4% bD

[SSE–JE : 2007]2. Characteristic strength of concrete is

measure at(a) 14 days (b) 28 days(c) 91 days (d) 7 days

[SSE–JE : 2007]3. The maximum depth of neutral axis for a

beam with Fe-415 bars in limit statemethod of design(a) 0.46d (b) 0.48d(c) 0.50d (d) 0.53d

[SSE–JE :2007]4. I.S. has specified the full strength of

concrete after(a) 7 days (b) 14 days(c) 21 days (d) 28 days

[SSE–JE : 2008]5. Permissible compressive strength of M20

concrete grade is

(a) 2100kg/cm (b) 2150kg/cm

(c) 2200kg/cm (d) 2250kg/cm[SSE–JE : 2008]

6. Ordinary concrete is not used for concretegrade(a) M10 (b) M15(c) M25 (d) M40

[SSE–JE : 2009]7. Permissible compressive strength of M20

concrete grade is

(a) 2100kg/cm (b) 2150kg/cm

(c) 2250kg/cm (d) 2200kg/cm[SSE–JE : 2009]

8. If a beam falls in bond, then its bondstrength can be increases mosteconomically be(a) increasing the depth of beam(b) using thinner bars but more innumber

(c) using thicker bars but less innumber(d) none of the above

[SSE–JE : 2009]9. According to IS: 456-2000, the maximum

reinforcement in a column is(a) 4% (b) 2% (c) 6% (d) 8%

[SSE–JE : 2009]10. The modular ratio m is given by

(a)cbc

280

(b)

cbc

280

2

(c)cbc

280

3(d) none of the above

[SSE–JE : 2009]11. The load factors for live load and dead

load are(a) 1.8 and 2.2 (b) 2.2 and 1.5(c) 1.8 and 1.8 (d) 2.2 and 2.2

[SSE–JE : 2009]12. The partial safety factor for concrete is

(a) 1.15 (b) 1.5 (c) 1.95 (d) 2.0[SSE–JE : 2009]

13. The minimum grade of reinforced concretein sea water as per IS 456: 2000 is:(a) M 15 (b) M 20(c) M 30 (d) M 40

[SSE–JE : 2010]14. The value of ultimate creep coefficient for

concrete(a) increases with age of loading(b) decreases with age of loading(c) remains constant(d) is taken as 0.0003

[SSE–JE : 2010]15. Partial factors for concrete and steel

respectively may be taken as:(a) 1.5 and 1.15 (b) 1.5 and 1.78(c) 3 and 1.78 (d) 3 and 1.2

[SSE–JE : 2010]16. The characteristic strength of concrete is

defined as that strength below which notmore than ___ of the test results areexpected to fall.(a) 10 percent (b) 5 percent(c) 15 percent (d) 20 percent

[SSE–JE : 2010]



17. Additional cover thickness in reinforcedcement concrete members totallyimmersed in sea water is:(a) 25 mm (b) 30 mm(c) 35 mm (d) 40 mm

[SSE–JE : 2010]18. The characteristic strength of concrete in

the actual structure is taken as:(a) ckf (b) ck0.85f

(c) ck0.67 f (d) ck0.447 f

[SSE–JE : 2010]19. In limit state of collapse against flexure,

the maximum strain in tensionreinforcement at failure shall not be lessthan

(a) 0.002 (b) y

s

f0.002

E

(c) y

s

f0.002

0.87E (d) y

s

f0.002

1.15E[SSE–JE : 2011]

20. According to IS 456:2000, the maximumdepth of stress block for balanced sectionof beam of effective depth d using steelwith yf 250, is given by

(a) 0.43 d (d) 0.53 d(c) 0.68 d (d) 0.73 d

[SSE–JE : 2011]21. The characteristic strength of concrete is

defined as that compressive strength belowwhich NOT more than(a) 2% of results fall(b) 10% of results fall(c) 5% of results fall(d) none of these

[SSE–JE : 2011]22. The modulus of elasticity of concrete

2(in N/mm ) can be assumed as follows

where ckf is the characteristic cube

compressive strength of concrete2(in N/mm )

(a) ck4000 f (b) ck5000 f

(c) ck2000 f (d) ck3000 f

[SSE–JE : 2012]23. The horizontal distance between parallel

main reinforcement in RC slab shall not bemore than

(a) 4 times effective depth of slab(b) 5 times effective depth of slab(c) 3times effective depth of slab(d) 2times effective depth of slab

[SSE–JE : 2012]24. Critical section for calculating bending

moment for a spread concrete footing ofeffective depth ‘d’ is given by the plane at(a) (d/2) from column face(b) d form column face(c) column face(d) 75 mm from face

[SSE–JE : 2012]25. If L is the effective length of a column and

B is the least lateral dimension, then thecolumn will be treated as short, column ifthe ratio of L/B is equal to or less than(a) 14 (b) 12 (c) 18 (d) 16

[SSE–JE : 2012]26. The factored loads at the limit state of

collapse for DL + LL, DL + WL and DL +WL combinations, according to IS: 456 –2000 are respectively.(a) 1.2 DL+1.2 LL, 1.5 DL+1.5WL,

1.5 DL+1.5LL+1.5WL(b) 1.2DL+1.5LL,(0.9or1.5)DL+1.5

WL,1.2DL+1.2LL+1.2 WL(c) 1.5 DL+1.5LL, 1.2DL+1.2WL,

1.5 DL+1.5Ll+1.5WL(d) (0.9 or 1.5)DL+1.5LL,

1.5DL+1.5WL, 1.2DL+1.2LL+1.2WL [SSE–JE : 2012]

27. A compression member is termed ascolumn or strut if the ratio of its effectivelength to the least lateral dimension ismore than(a) 3 (b) 5 (c) 1 (d) 2

[SSE–JE : 2012]28. If the modular ratio is ‘m’ stress ratio in

steel and concrete is ‘r’ then the criticalneutral axis constant ‘k’ is given by(a) m(m–r) (b) m(m+r)

(c) (m+r)m (d) 2m /r[SSE–JE : 2013]

29. As per IS 456, splitting tensile strength( crf ) of concrete may be estimated from

compressive strength as

(a) cr ckf 0.65 f (b) cr ckf 0.7 f

(c) cr ckf 0.75 f (d) cr ckf 0.8 f



[SSE–JE : 2013]30. In a singly reinforced beam, if the

permissible stress in concrete reachesearlier than the permissible stress in steel,the beam section is called(a) Under reinforced section(b) Over reinforced section(c) Balanced section(d) Economic section

[SSE–JE : 2014]31. If the area of tension reinforcement

provided is less than that required for abalanced section, then the RCC beamsection is called(a) over reinforced(b) neutral reinforced(c) under reinforced(d) bottom reinforced

[SSE–JE : 2014]32. In limit of collapse for direct compression,

the maximum axial compressive strain inconcrete is(a) 0.002 (b) 0.003(c) 0.0035 (d) 0.004

[SSE–JE : 2014]33. In limit state method of design, for bars in

compression the values of bond stress shallbe(a) Decreased by 25%(b) Increased by 20%(c) Decreased by 20%(d) Increased by 25%

[SSE–JE : 2014]34. Generally concrete cube test measure

concrete’s(a) Compressive strength(b) Tensile strength(c) Twisting strength(d) None of the above

[SSE–JE : 2014]35. As per IS 456-2000, in the absence of test

data, the approximate value of the totalshrinkage strain for design may be takenas:(a) 0.004 (b) 0.001(c) 0.002 (d) 0.0003

[SSE–JE : 2014]36. Mild steel used in RCC structures

conforms to(a) IS : 432 (b) IS : 1566

(c) IS : 1786 (d) IS : 2062[SSE–JE : 2014]

37. The bearing stress at bends for limit statemethod compared to working stressmethod of design is(a) 1.5 times more(b) 2.5 times more(c) 2.5 times less(d) 1.5 times less

[SSE–JE : 2015]38. Percentage of steel for balanced design of a

singly reinforced rectangular section bylimit state method depends on(A) Characteristic strength of concrete(B) yield strength of steel(C)Modulus of elasticity of steel(D) Geometry of the section(a) Only (B)(b)(A), (B) and (D)(c) (B), (C) and (D)(d) (A), (B), and (C)

[SSE–JE : 2017]39. From limiting deflection point view, use of

high strength steel in RC beam results in(a) Reduction in depth(b) No change in depth(c) Increases in depth(d) Increases in width

[SSE–JE : 2017]40. The permissible stress to which a structural

member can be subjected to, is known as(a) bearing stress(b) working stress(c) tensile stress(d) compressive stress

[SSE–JE : 2017]41. The assumption that the plane sections

normal before bending remains normalafter bending is used(a) only in the working stress method ofdesign(b) only in the limit-state method ofdesign(c) in both working stress and limitstate methods of design(d) only in the ultimate load method ofdesign

[SSE–JE : 2017]

42. Partial safety for concrete and steel are 1.5and 1.15 respectively, because

2. RCC Design (Solutions) SSC-JE Civil Engineering [114]

61 Kalu Sarai, HauzKhas, New Delhi-110016. Ph. 011-26514888. www.engineersinstitute.com, www.sscje.com© 2018 ENGINEERS INSTITUTE OF INDIA® .All Rights Reserved SSC-JE/AE: Classroom, POSTAL, All India TEST Series

CHAPTER-2 RCC Design (Solutions)

1. Introduction to W.S.M & L.S.M (Answer Key)1 2 3 4 5 6 7 8 9 10d b b d c d d b c c11 12 13 14 15 16 17 18 19 20d b c b a b d c d b21 22 23 24 25 26 27 28 29 30c b c c b d a b b b

31 32 33 34 35 36 37 38 39 40c a d a d b c d c b

41 42 43 44 45 46 47 48 49 50c b d b b c c d c a

51 52 53 54 55 56 57 58 59 60a d c c c c b a d a61 62 63 64 65 66 67 68 69 70a c d b b a d a c b71b

2. Shear Bond Anchorage, Torsion, Beams, Stair Case, Retaining Walls And WaterTanks-(Answer Key)

1 2 3 4 5 6 7 8 9 10c a a a c d a c b a

11 12 13 14 15 16 17 18 19 20b a b d c a d d d a21 22 23 24 25 26 27 28 29 30a

3. Footing, Columns, Beams, Slabs, Prestressed Concrete (Answer Key)1 2 3 4 5 6 7 8 9 10d a b b b a b c a -11 12 13 14 15 16 17 18 19 20d b b d A,b d a c b -21 22 23 24 25 26 27 28 29 30- a c d d a a d d c

31 32 33 34 35 36 37 38 39 40a c b b a b b c a c41 42 43 44 45 46 47 48 49 50c c c d c d c d d b

51 52 53 54 55 56 57 58 59 60b c c c c c b c c b61 62 63 64 65 66 67 68 69 70c b c d c a c c c b

71 72 73 74 75 76 77 78 79 80c d c d c d d d a d

81 82 83 84 85 86 87 88 89 90d b d b d c a d d c91 92 93 94 95 96 97 98 99 100d c d c - a a d a c

101 102 103 104 105 106 107 108 109 110d a b a a a c c a d

111 112 113 114 115 116 117 118 119c d c c b a b c a

2. RCC Design (Solutions) SSC-JE Civil Engineering [115]

61 Kalu Sarai, HauzKhas, New Delhi-110016. Ph. 011-26514888. www.engineersinstitute.com, www.sscje.com© 2018 ENGINEERS INSTITUTE OF INDIA® .All Rights Reserved SSC-JE/AE: Classroom, POSTAL, All India TEST Series

SOLUTIONS

1. INTRODUCTION TO W.S.M & L.S.M-SOLUTION1. (d)

As per IS – 456 : 2000 Maximum tension reinforcement for Beams

stA = 4% of bD A = bD Total cross-sectional area

Maximum reinforcement for Beams

scA = 4% Total Cross - Sectional area

scA = 4% (bD) Minimum tension reinforcement for Beams

st

y

A 0.85

Bd f

Where, fy yielding strength of steel.2. (b)

As per IS – 456 : 2000 (cl.6.2.1)Characteristic strength of concrete is measured at 28 days.

3. (b)Limiting depth in Limit State Method is given by

limux kd

Where,700

1100 0.87

y

kf

d effective depth of beam

For different fy, limux will be different

Fylimux

250 0.53 d415 0.48 d500 0.46 d550 0.44 d

4. (d)Indian Standard Code has specified the full strength of concrete at 28 days.

5. (c)M20 ‘M’ means Mix

20 means compressive strength after 28 days in 2

N

mm

So, compressive strength of M20 is 220 Nmm

or 2200 Kgcm

6. (d)As per IS – 456 : 2000 (Table -2) Ordinary Grade = M10 - M20 Standard Grade = M25 - M55 High Strength Concrete = M60 - M80

3. Steel Design SSC-JE Civil Engineering [143]


CHAPTER-3 STEEL DESIGN1. Structural Connections

(Riveted, Bolted and Welded)

1. The type of welding used to connect twoplates at a lap joint is called(a) But weld (b) Slot weld(c) Plug weld (d) fillet weld

[SSC-JE : 2007]

2. A riveted joint can fail in(a) Tearing of plate only(b) Shearing of rivet only(c) Bearing of plate of rivet only(d) Any of the above

[SSC-JE : 2007]3. The gross diameter of a 14 mm nominal

diameter rivet is(a) 15.5 mm (b) 16 mm(c) 16.5 mm (d) None of the above

[SSC-JE : 2007]4. The effective length of a fillet weld of

length l is (where s = the size of theweld)

(a) 4sl (b)2

3l

(c) 2sl (d)4

5

[SSC-JE : 2007]5. The strength of field rivets as compared

to shop rivets is(a) Same (b) 90 %(c) 80 % (d) 75 %

[SSC-JE : 2007]

6. The maximum centre to centre distancebetween rivets in a tension member ofthickness 10 mm is(a) 200 mm (b) 160 mm(c) 120 mm (d) 100 mm

[SSC-JE : 2007]7. Which of the following does not describe

a weld type?(a) Butt weld (b) Plug weld(c) Zig-zag weld (d) Lap weld

[SSC-JE : 2007]

8. A beam is defined as a structural membersubjected to(a) Axial loading(b) Transverse loading(c) Axial and traverse loading(d) None of these

[SSC-JE : 2008]9. To the calculated area of cover plates of a

built up beam, an allowance for rivetholes to be added is(a) 10 % (b) 13 %(c) 15 % (d) 18 %

[SSC-JE : 2008]10. Minimum pitch of the rivets shall not be

less than(a) 1.5 d (b) 2.5 d(c) 2.0 d (d) 3.0 dWhere d is the gross diameter of therivets.

[SSC-JE : 2009]11. It p and d are pitch and gross diameter of

rivet; the efficiency of the riveted joint,is given by

(a) = p/(p–d) (b) = (p–d)/p

(c) = p/(p+d) (d) = (p +d)/p[SSC-JE : 2009]

12. The permissible bending stress in steel is(a) 1500 kg/cm2 (b) 1890 kg/cm2

(c) 1900 kg/cm2 (d)1300 kg/cm2

[SSC-JE : 2009]13. Minimum pitch of rivets should not be

less than how many of gross diameter ofrivet?(a) 2 times (b) 2.5 times(c) 3 times (d) 4 time

[SSC-JE : 2010]

14. Effective throat thickness (t) and size ofweld (s) are connected as;

(a) 2t k s (b) 3t k s

(c) t k s (d) t k s[SSC-JE : 2010]

3. Steel Design SSC-JE Civil Engineering [144]


15. Bolts are most suitable to carry(a) Shear(b) bending(c) axial tension(d) shear and bending

[SSC-JE : 2010]16. For a rivet of 36 mm diameter, the

diameter of hole shall be taken as;(a) 37.5 mm (b) 36.0 mm(c) 38.0 mm (d) 38.5 mm

[SSC-JE : 2010]

17. What should be multiplied withpermissible bearing stress to find outstrength of rivet in bearing?(a) (p–d) t (b) V

(c) 2d2

(d) 2d. t

[SSC-JE : 2010]18. Pick the wrongly written assumption

taken in analysis of riveted joints(a) Friction in plates in negligible(b) Uniform stress distribution in plates

is not considered(c) Bending moment is not taken into

consideration(d) Total load on the joint is equally

shared by all rivets [SSC-JE : 2010]19. A riveted joint can fail in :

(a) Tearing of plate only(b) Shearing of rivet only(c) Bearing of plate or rivet only(d) Any of the above [SSC-JE : 2010]

20. The type of weld used to connect twoplates at a lap joint is called:(a) Butt weld (b) slot weld(c) Plug weld (d) Fillet weld

[SSC-JE : 2010]

21. According to Unwin’s formula, therelation between diameter of rivet hold(d) in mm, and thickness of plate (t) inmm is given by

(a) D = t (b) d 6.01 t

(c) d = 2t (d) d 2.6 t[SSC-JE : 2011]

22. The distance between two rivetsmeasured perpendicular to the directionof applied force is known as(a) pitch (b) gauge(c) staggered pitch (d) edge distance

[SSC-JE : 2013]23. Maximum size of the fillet weld for a

plate of square edge is(a) 1.5 mm less than the thickness of the

plate(b) One-half of the thickness of the plate(c) Thickness of the plate itself(d) 1.5 mm more than the thickness of

the plate [SSC-JE : 2013]

24. The minimum edge and end distancefrom the centre of any hole to the nearestflame-cut edge shall not be less than(a) 1.5 times hole dia(b) 1.7 times hole dia(c) 2 times hole dia(d) 1.5 times bolt/rivet dia

[SSC-JE : 2013]25. The throat in a fillet weld is

(a) Large side of the triangle of the fillet(b) Hypotenuse of the triangle of the

fillet(c) Smaller side of the triangle of the

fillet(d) Perpendicular distance from the root

to the hypotenuse [SSC-JE : 2014]

26. The size of a rivet is identified by(a) Diameter of shank(b) Diameter of head(c) Length of shank(d) Shape of head [SSC-JE : 2014]

27. The maximum permissible stress forpower driven field rivet in bearing onrivet is(a) 100 N/mm2 (b) 250 N/mm2

(c) 270 N/mm2 (d) 300 N/mm2

[SSC-JE : 2014]

28. The maximum permissible stress forhand driven rivet in axial tension is:(a) 250 N/mm2 (b) 80 N/mm2

3. Steel Design (Solutions) SSC-JE Civil Engineering [153]


CHAPTER-3 STEEL DESIGN (Solutions)

1. Structural Connections (Riveted, Bolted and Welded): (Answer Key)

1 2 3 4 5 6 7 8 9 10d d a c b a c b a b11 12 13 14 15 16 17 18 19 20b b b c c c - b d d21 22 23 24 25 26 27 28 29 30b b a a d a c b b d31 32 33 34 35 36 37 38 39 40b a c a b b c a c c41 42 43 44 45 46 47 48 49 50b b b c b b d a b d51 52 53 54 55 56c c d c d d

2. Tension, Compression and Flexural Member: (Answer Key)

1 2 3 4 5 6 7 8 9 10d d d d b b b d b a11 12 13 14 15 16 17 18 19 20c c d d a a b b a b

21 22 23 24 25 26 27 28 29 30a d c c a d b b c b31 32 33 34 35a d d a c

3. Plate Girders, Industrial Roofs And miscellaneous (Answer Key)

1 2 3 4 5 6 7 8 9 10c a c b b c d b a a

11 12 13 14 15 16 17 18 19 20b d a a d a c d d c21 22 23 24 25 26 27 28 29 30c b - a c c d b - d

31 32a c



SOLUTIONS

1. Structural Connections (Riveted, Bolted and Welded)1. (d)

Butt weld : Butt weld are better in highly strained structure where smooth flow of stress is a necessity if butt joint has the same characteristics as that of parent metal and has complete penetration

with no unweld zones then butt joint approaches the condition of no joint at all and for mostcommon type of parent metals

Butt joint may have impact and fatigue resistance equal to or better than that of the parent metal.

Fillet weld : Fillet weld is provided when two metal surface to be joined are in different planes. Fillet welds are more common that butt welds. Fillet welds are easy to make, require less material preparation and are easier to fit than the butt

welds.

Plug and slot weld Slot and plug welds are used to supplement reinforce the fillet welds when the required of the

fillet weld cannot be provided Penetration of these welds are difficult

2. (d)Failure of riveted joint(1) Shear failure of bolts : shear stresses are generated when the plates slip due to applied forces.

Shear failure of bolt(2) Bearing failure of bolts : The bolt is crushed around half circumference.



The pate may be strong in bearing and the heaviest stressed plate may press the bolt shank. Bearing failure of bolts generally does of high strength practice except when plates are made of

high strength steel and the bolts are of very low grade steel.

(3) Tension failure of bolts : Bolt subjected to tension may fail at the steel area. In case if any of the connecting plates is sufficiently flexible additional prying forces induced in

the bolts.(4) Tension or tearing failure of plates : Tearing failure occurs when the bolts are strong than the plates. Tension on bolts the gross area (yielding) and net effective area (rupture) must be considered

3. (a)As per IS 800 : 1983 , Cl .8.9.3Area of rivet and bolt hole

For diameter ≤ 25mm: Rivet hole shall be taken as the nominal diameter of a rivet plus 1.5mmFor rivet diameter >25mm Rivet hole shall be taken as the nominal diameter of a rivet plus 2 mm The diameter of the bolt hole shall be taken as nominal diameter of the bolt plus 1.5 mm.

So, given 14mmCross diameter of rivet = 14 + 1.5 = 15.5 mm

4. (c)As per IS 800 : 2009 (Cl. 10.5.4.1) Effective length of fillet weld = actual length – 2

Where, S → size of weld Deduction of 2S is made to give due allowance the formation of caters at the ends of the welded

length.

4. Estimating, Costing and Valuation SSC-JE Civil Engineering [188]


CHAPTER-4 Estimating, Costing and Valuation

1. Estimates1. The measurement is NOT made in square

metres in case of(a) Damp proof course(b) Form works(c) Concrete Jaffries(d) R.C. Chhajja

[SSC-JE : 2012]2. If d is the constant distance between the

sections, then the correct prismoidalformula for volume is

(a.)d

[first area last area34 even area 2 odd areas]

(b.)d


(c.)d [first area last area

even area 2 odd areas]

(d.)d


[SSC-JE:2012]

3. The cross-section of the strip footing isshown below:

All the dimensions are in mm.The quantity of 150 thick PCC (1 : 3 : 6)per metre is(a) 0.094 sq. m (b) 0.094 cu.m(c) 0.0625 sq. m (d)0.0625cu.m

[SSC-JE:2012]

4. For one sq.m. single brick flat soling(conventional size), the number of bricksrequired is(a) 54 (b) 62(c) 32 (d) 44

[SSC-JE : 2012]

5. The number of bricks (conventional size)required for one square metre of brick onedge soling is(a) 54 (b) 64(c) 34 (d) 44

[SSC-JE : 2012]

6. For 1 sq. m. of 7.5 cm thick limeterracing in roof with brick khoa, Surkhi,lime (2 : 2 : 7) including finishing, thequantity of Surkhi required is(a) 0.023 cu.m (b) 0.025 cu.m(c) 0.019 cu.m (d) 0.022 cu.m

[SSC-JE : 2012]

7. In straight line method, the annualdepreciation of the property is

(a)Original cost Annual sinking fund

Life (in years)

(b)Life (in years)

Original cost + Scrap value

(c)Original cost Scrap value

Life (in years)

(d)Original cost Scrap value

Life (in years)

[SSC-JE : 2012]

8. For 15 mm thick cement plastering1 : 6 on 100 sq. m new brick work, thequantity of cement required is

(a) 30.200 m (b) 30.247 m

(c) 30.274 m (d) 30.343m[SSC-JE : 2012]

9. Number of modular bricks required forone cubic metre of brick masonary are(a) 400 (b) 450(c) 550 (d) 500

[SSC-JE : 2013]

10.

The above figure represents plan andsection of an excavation layout. Thevolume of earthwork in excavation offoundation trench is

4. Estimating, Costing and Valuation SSC-JE Civil Engineering [189]


(a) 6.528 cu. m (b) 8.064 cu. m(c) 8.832 cu. m (d) 9.600cu. m

[SSC-JE : 2013]11. If d be the diameter of MS or tor steel

bar in mm, the standard weight (in kg)per metre of the bar is

(a) 20.00618d (b) 0.00618 d

(c) 20.00816d (d) 0.00816 d[SSC-JE:2013]

12. Most accurate method of estimation isbased on(a) Building cost index estimate(b) Plinth area estimate(c) Detailed estimate(d) Cube rate estimate

[SSC-JE : 2014]13. The plan of a building is in the form of a

rectangle with centre line dimensions ofthe outer walls as 10.3 m 15.3 m. Thethickness of the walls in superstructure is0.3 m. Then its carpet area is(a) 150 m2 (b) 157.59 m2

(c) 165.36 m2 (d) 170 m2

[SSC-JE : 2014]

14. Pick up the item of work not included inthe plinth area estimate.(a) Wall thickness(b) Room area(c) Verandah area(d) Courtyard area

[SSC-JE : 2014]15. One brick thickness of wall is roughly

equal to(a) 10 cm (b) 15 cm(c) 20 cm (d) 30 cm

[SSC-JE : 2014]

16. The damp proof course (D.P.C) ofuniform thickness in a building havingwalls of different widths is measured in(a) m4 (b) m3

(c) m2 (d) m[SSC-JE : 2014]

17. volume by Trapezoidal Formula Methodis determined by the formula

(a) 0 n2 4 6 n 1

A AD A A A .....A

2

(b) 1 n0 1 3 n 1

A AD A A A .....A

2

(c) 0 11 3 5 n 1

A AD A A A .....A

2

(d) 0 n1 2 3 n 1

A AD A A A .....A

2

[SSC-JE : 2014]

18. The quantity of wood for the shutters ofdoors and windows is calculated in(a) m3 (b) lump-sum(c) m (d) m2

[SSC-JE : 2014]

19. The plan of a building is in the form ofsquare with centerline dimensions ofouter walls as 14.7 m 14.7 m. If thethickness of the wall in superstructure is0.30 m, then its plinth area is;(a) 234 m2 (b) 150 m2

(c) 216 m2 (d) 225 m2

[SSC-JE : 2014]

20. Thickness of plastering is usually(a) 40 mm (b) 6 mm(c) 12 mm (d) 25 mm

[SSC-JE : 2014]

21. An estimate is(a) Cost of the structure using thumb

rules(b) Random guess of cost of structure(c) Probable cost arrived at before

construction(d) Actual cost of construction

[SSC-JE : 2015]

22. Estimate for electrical wiring is preparedon the basis of(a) Voltage(b) Power(c) Number of appliances(d) Number of points

[SSC-JE : 2015]

23. Indicating works left in excavatedtrenches to facilitate the measurement ofborrow pits are known as(a) Jambs (b) posts(c) tell-tale (d) None of these

[SSC-JE : 2017]

24. In case of steel rolling shutters, for theestimation of painted area, the plain areais multiplied by

4. Estimating, Costing and Valuation (Solutions) SSC-JE Civil Engineering [196]


CHAPTER-4 Estimating, Costing and Valuation (Solutions)

1. Estimates1 2 3 4 5 6 7 8 9 10d a a c a d c a d b11 12 13 14 15 16 17 18 19 20a c a d c c d d d c21 22 23 24 25 26 27 28 29 30c d c c b a c d b c

31 32 33 34 35 36 37 38 39 40d a a,c d d b b a d c41 42 43 44 45 46 47 48 49 50d c d d a d d c d d51 52 53 54 55 56 57 58 59 60a c - b a d d d d a61 62 63 64 65 66d d b d b c

2. Rate analysis, Valuation and Miscellaneous1 2 3 4 5 6 7a d c c b c c

3. Valuation1 2 3 4 5 6 7 8 9 10

d b a a d d a a b d

4. Miscellaneous1 2 3 4 5 6 7 8d d a c c a c c

4. Estimating, Costing and Valuation (Solutions) SSC-JE Civil Engineering [197]


SOLUTIONS

1. Estimates (Solutions)

1. (d)The measurement is not made in square meters in case of R. C. Chhajja because thickness of it isnot negligible.

2. (a) Prismoidal Formula This method is also called as Simpson’s rule. To apply this formula, it is essential to have odd number of cross-sections This method is not suitable for rock excavation and concrete work. Prismoidal formula gives less volume than trapezoid formula.

dV = (first area + last area) + 4( even area) + 2( odd area

33. (a)

Quantity of 150 mm thick P.C.C. per meter will be= (0.625) × (0.150)= 0.093750 Sq.m 0.094 Sq.m

4. (c)Conventional size of brick is 22 11.4 7.6cm cm cm So number of bricks for one sq. meter single brick flat soling

41 1 1039.87 39

22 11.4 7.6

bricks

5. (a) Number of bricks (conventional size) required for one square meter of brick on edge

soling4

1 159.808 59

22 7.6 10

6. (d) Quantity of surkhi including finishing required 60% moreSo,

2 60 20.075 1 (0.075 1)

11 100 110.0214 . 0.022 .cu m cu m

7. (c) Straight line method is used to gradually reduce the carrying amount of a fixed asset over its

useful life. The method is designed to reflect the consumption pattern of the underlying asset and is used

when there is no particular pattern to the manner in which the asset is to be used over time.

Annual depreciation of the property is given byoriginal cost - scrap value

=life (in years)

8. (a) Quantity of cement 3115 10 100

7 0.21 cubic meter

9. (d) Dimension of modular brick is 20 cm 10 cm 10cm

So, Number of bricks in one cubic meter61 10

50020 10 10

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Senior Section Engineer (Indian Railways) Water Supply & Sanitation,

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5. Building Materials SSC-JE Civil Engineering [208]


CHAPTER-5 BUILDING MATERIALS

1. Stones

1. Chemically, marble is known as(a) Metamorphic rock(b) Argillaceous rock(c) Calcareous rock(d) Siliceous rock

[SSC-JE : 2008]2. Stone is rejected if it absorbs water more

than(a) 5% (b) 10%(c) 20% (d) 25%

[SSC-JE : 2009]

3. Sand stone is(a) Sedimentary rock(b) Metamorphic rock(c) Igneous rock(d)Volcanic rock [SSC-JE : 2010]

4. Crushing strength of good building stoneshould be more than:(a) 2500 kg/cm (b) 21000 kg/cm

(c) 21400 kg/cm (d) 22000 kg/cm[SSC-JE: 2010]

5. Rocks having alumina or clay as their majorconstituent are called:(a) Silicious rocks(b) Argillaceous rocks(c) Sedimentary rocks(d) None of the above

[SSC-JE : 2010]

6. Crushing strength of a good building stoneshould be more than(a) 50 MPa (b) 100 MPa(c) 150 MPa (d) 200 MPa

[SSC-JE: 2011]

7. The most suitable stone for building piers is(a) Granite (b) Limestone(c) Marble (d) Sandstone

[SSC-JE: 2013]

8. Under heat and pressure, granite cantransform into(a) Quartzite (b) Marble(c) Slate (d) Gneiss

[SSC-JE :2014]

9. Quartzite and marble are by nature(a) volcanic (b) plutonic(c) sedimentary (d) metamorphic

[SSC-JE : 2014]

10. Granite is a rock that is by nature(a) metamorphic (b) volcanic(c) plutonic (d) sedimentary

[SSC-JE :2014]11. Basalt stone is by nature :

(a) metamorphic (b) volcanic(c) plutonic (d) sedimentary

[SSC-JE : 2014]

12. The process of providing smooth face andregular face to stones is known as(a) quarrying (b) seasoning(c) pitching (d) dressing

[SSC-JE: 2015]13. The natural bedding plane of stones and the

direction of pressure in stone masonry is(a) Normal (b) Parallel(c) At 30° (d) At 45°

[SSC-JE: 2015]

14. Following stone is suitable for damp-proofing(a) Slate (b) Marble(c) Laterite (d) Granite

[SSC-JE: 2015]

15. Identify the process responsible for theformation of sedimentary rocks.(a) solidification of molten mass of silicates

below or at the surface of the earth(b) changes in texture or mineral

composition or both of igneous andsedimentary rocks due to hightemperature and heavy pressure

(c) deposited layers of sand and siltsubjected to enormous overburdenpressures over geological times

(d) None of the options[SSC-JE :2017]

16. Pegmatite is an example of(a) Sedimentary rock(b) Extrusive igneous rock(c) Intrusive igneous rock(d) Metamorphic rock

[SSC-JE :2017]

5. Building Materials SSC-JE Civil Engineering [209]


17. The sub-classification of sedimentary rocks(a) Volcanic and plutonic(b) Mechanical, chemical, organic(c) Intrusive, extrusive(d) Stratified, un-stratified

[SSC-JE :2017]

18. Most of the stones possess the specificgravity in the range of(a) 1 to 1.5 (b) 1.5 to 2.0(c) 2.4 to 2.8 (d) 3 to 4

[SSC-JE :2017]

19. In stone masonry, the stones are placed inposition such that the natural bedding planeis(a) Normal to the direction of pressure they

carry(b) Parallel to the direction of pressure

they carry(c) At 45° to the direction of pressure they

carry(d) At 60° to the direction of pressure they

carry[SSC-JE :2017]

20. Slate and marble stone belong to(a) igneous rocks(b) metamorphic rocks(c) sedimentary rocks(d) foliated rocks

[SSC-JE :2017]

21. If the rocks are formed due to alteration oforiginal structure under heat and excessivepressure, then they are known as(a) igneous (b) sedimentary(c) volcanic (d) metamorphic

[SSC-JE :2017]

22. Quartzite is a.(a) Sandy rock (b) Siliceous rock(c) Organic rock (d) Calcareous rock

[SSC-JE :2017]

23. Which of the following is the reason for thedecrease in the use of stones as buildingmaterial?(a) Steel and R.C.C. are less bulky and

more durable(b) Strength of stones cannot be rationally

analyzed

(c) Stones are not conveniently available inplains

(d) All options are correct[SSC-JE :2017]

24. The argillaceous rocks have their principalconstituents as(a) lime (b) clay(c) sand (d) None of these

[SSC-JE :2017]

25. Shingle is(a) water bound pebbles(b) disintegrated laterite(c) crushed granite(d) None of these

[SSC-JE :2017]26. The solidification of molten magma when it

reaches the surface of earth results in theformation of(a) sedimentary rocks(b) metamorphic rocks(c) basalts and traps(d) granite

[SSC-JE :2017]

27. Which of the following is the maincomposition of granite?(a) Quartz, feldspar and mica(b) Quartz and lime(c) Quartz and silica(d) Silica, lime and alumina

[SSC-JE :2017]

28. Marble is an example of(a) Aqueous rock(b) Metamorphic rock(c) Sedimentary rock(d) Igneous rock

[SSC-JE :2017]

29. On which of the following factors thecrushing strength of stone does, not depend?(a) Texture(b) Workability(c) Specific gravity(d) Both the texture and specific gravity

[SSC-JE :2017]

30. In stone masonry, stones are straddled sothat the plane of the bed is(a) right angles (b) 45°(c) 60° (d) parallel

[SSC-JE :2017]

5. Building Materials (Solutions) SSC-JE Civil Engineering [235]


CHAPTER-5 BUILDING MATERIALS (Solutions)

1. STONES (Answer Key)1 2 3 4 5 6 7 8 9 10c b a b b b a d d c

11 12 13 14 15 16 17 18 19 20b a a a c c b c a b21 22 23 24 25 26 27 28 29 30d a d b a c a b b a31 32 33c c a

2. LIME (Answer Key)1 2 3 4 5 6 7 8 9 10c c b b d d b c b d

11 12 13 14 15a b d d d

3. CEMENT (Answer Key)1 2 3 4 5 6 7 8 9 10d a b a b d c a c c11 12 13 14 15 16 17 18 19 20a b c d c a a c c d21 22 23 24 25 26 27 28 29 30d b c d c d d c d b31 32 33 34 35 36 37 38 39 40d a b b c b c b b c41 42 43 44 45 46 47 48 49 50a a b a a a c a c a51 52 53 54 55 56 57 58 59 60d a a d c a d c d b61 62 63 64 65 66 67 68 69 70b a b d a c d b a a71 72 73 74 75 76 77 78 79 80a b d d d d - c c c81 82 83 84 85 86 87 88 89 90b a d b a,b a a,c d a,c a91 92 93 94a c d a

4. BRICKS (Answer Key)1 2 3 4 5 6 7 8 9 10b b c a d b c a c b11 12 13 14 15 16 17 18 19 20c a b c a a b a c b

21 22 23 24 25 26 27 28 29 30c d b c c d d a b b

31 32 33 34 35a b a c a



5. TIMBERS (Answer Key)1 2 3 4 5 6 7 8 9 10b b a b b d b c c c11 12 13 14 15 16 17 18 19 20d b c b d a d a d c21 22 23 24 25 26 27 28 29 30

6. PAINT AND MISCELLANEOUS (Answer Key)1 2 3 4 5 6 7 8 9 10c d b c a c c b d c

11 12 13 14 15 16 17 18 19 20a c b a b d - d c -21 22 23 24 25 26 27 28 29 30d c a b c c d c c d31 32 33 34 35 36 37 38 39 40d a d c b c c d d d41 42d b

7. CONCRETE TECHNOLOGY (Answer Key)1 2 3 4 5 6 7 8 9 10c a c d d a c b d b

11 12 13 14 15 16 17 18 19 20d c d c c b d b c d21 22 23 24 25 26 27 28 29 30b a b d c a b - a a31 32 33 34 35 36 37 38 39 40c b a a c a a b c d

41 42 43 44 45 46 47 48 49 50c c b c d a b c b b

51 52 53 54 55 56 57 58 59 60b a b b d d b c d c61 62 63 64 65 66 67 68 69 70c c a d a a b d d c

71 72 73 74 75 76 77 78 79 80d d d d b c a d a b81 82 83 84 85 86 87 88 89 90b a d b b a d a c b91 92 93 94 95 96 97 98 99 100b c b b d d d a c d

101 102 103 104 105 106 107 108 109 110a d c d c b b d b b

111 112 113 114 115 116 117 118 119 120d b b d a a c d a a

121 122 123 124 125 126 127 128 129 130d a d d c d b d d d

131 132 133 134 135 136 137 138 139 140c a a c d d a c c a

141 142 143 144 145 146 147 148 149 150d d a d - d - a d d

151 152 153 154 155 156 157 158 159 160a d b d c b a c c d

161d



SOLUTIONS

1. (c) Chemically, marble is known as calcareous rock and geologically, it is known as metamorphic

rock. In calcareous rocks – calcium carbonate is the main constituent in these rocks. Metamorphic rock – these are formed by the change in character of the pre-existing rocks

when subjected to great heat and pressure. The process of their transformation is calledmetamorphism.

2. (b) A good building stone shall not absorb water by more than 0.60% (of weight) in 24 hours. Stone is rejected if it absorb water more than 10%

3. (a)Sand stone is sedimentary rock.Sedimentary rocks are formed by the consolidation of the products of weathering obtained fromthe pre-existing rocks ex – sand stone, limestone, gypsum, gravel etc.

4. (b)

Crushing strength of a good building stones should not be less than 100 N/mm2

5. (b)Argillaceous rocks have alumina or clay as their major constituent. There rocks may be dense andcompact or may be soft.

6. (b)Crushing strength of good building stone should be more than 100 N/mm2.

7. (a) Granite is used for pier and abutments Marble is used for ornamental work Lime stone is used for architectural work in walls etc. Sand stone is used for ashlar masonry and architectural work

8. (d)Gneiss is a high grade metamorphic rock, meaning that it has been subjected to higher temperaturesand pressures. Gneiss displays distinct foliation, representing alternating layers composed ofdifferent minerals.

9. (d)

Quartzite and marble are by nature metamorphic rocks, however, they were metamorphosed fromdifferent sedimentary rocks. Quartzite was metamorphosed form sandstone formed in the land riverenvironment while sand come from lime stone that was formed in the ocean environment.

10. (c)

Granite is a light coloured plutonic rock mostly found in mountainous areas.



11. (b)

Basalt is volcanic (sedimentary) rock formed by rapid cooling of basaltic lava.

12. (d)The stones are to be cut into suitable sizes and with suitable surface. The process is known as thedressing of stones and it is carried out for the following purpose. To get the desired appearance from stone work. To make the transport from quarry easy economical To suit to the requirements of stone masonry

13. (a)The natural bedding plane of stones and the direction of pressure in stone masonry is normal.

14. (a)Slate is suitable for damp-proofing among the given options because it is less permeable(negligible)

15. (c)These rocks are formed by consolidation of the products of weathering obtained from the pre-existing rocks. Ex – gravel, sandstone, limestone, gypsum etc.

16. (c)

Pegmatite is a holocrystalline, intrusive igneous rock composed of interlocking phaneritic crystalsusually large than 2.5 cm in size. Such rocks are referred to as pegmatite.

17. (b) Sedimentary rocks are formed by the accumulation of sediments.

there are three basic types of sedimentary rocks. Elastic sedimentary rocks such as breccias, conglomerate , sandstone, siltstone and shale are

formed from mechanical weathering debris. Chemical sedimentary rocks such as rock salt, iron ire, chert, flint, some dolomites and some

lime stones, form when dissolved material precipitate from solution. Organic sedimentary rocks such as cool, some dolomites and some lime stones, form from the

accumulation of plant or animal debris.18. (c)

Stones are inorganic material Specific gravity of inorganic material varies from 2.4 to 2.8

19. (a)In stone masonry, the stones are placed in position such than the natural bedding plane is normal tothe direction of pressure they carry.

20. (b) Slate and marble stone belong to metamorphic rock. Metamorphic rocks are formed by the change in character of the pre-existing rocks when

subjected to great heat and pressure. The process of their transformation is called metamorphic

6. Environmental Engineering SSC-JE Civil Engineering [279]


CHAPTER-6 Environmental Engineering

1. Water Demand and PopulationForecasting

1. The total water requirement of a citygenerally assessed on the basis of(a) Maximum hourly demand(b) Maximum daily demand + fire

demand(c) Average daily demand + fire demand(d) Greater of (a) and (b)

[SSC-JE: 2007]2. Pick up the incorrect statement

(a) Sluice valves are provided to allowflow of water only in one direction,preventing back flow

(b) Air valves are provided at summitsalong a pipeline to admit/release air

(c) Scour valves are provided at lowpoints to empty a pipeline

(d) Gate valves are provided to regulateflow of water through the pipelines

[SSC-JE : 2007](e)

(f)

3. Water supply includes(a) Collection, transportation and

treatment of water(b) Distribution of water to consumers(c) Provision of hydrants for fire lighting(d) All the above [SSC-JE: 2008]

4. The total water demand may be taken as(a) 135 lpcd (b) 160 lpcd(c) 210 lpcd (d) 270 lpcd

[SSC-JE : 2009]5. The distribution system in water supplies

is designed on the basis of:(a) Average daily demand(b) Peak hourly demand(c) Coincident of draft(d) Greater of (b) and (c)

[SSC-JE : 2010]6. The population of a town as per census

records were 2,00,000 , 2,10,000 and2,30,000 for the years 1981, 1991 and2001 respectively. Find the population ofthe town in the year 2011 usingarithmetic mean method.(a) 250000 (b) 255000(c) 240000 (d) 245000

[SSC-JE : 2012]

7. The population of a town as per censusrecords were 2,00,000 , 2,10,000 and2,30,000 for the years 1981, 1991 and2001 respectively. The population of thetown as per geometric mean method inthe year 2011 is(a) 244872 (b) 245872(c) 246820 (d) None of these

[SSC-JE : 2013]

8. Population potential of domestic sewagegenerated in a town and its industrialsewage can be compared with referenceto(a) Their BOD value(b) Population equivalent(c) Their volume(d) The relative density

[SSC-JE : 2015]

9. As per Indian Standard Specifications,the peak discharge for domestic purposesper capita per minute, is taken(a) 1.80 litres for 5 to 10 uses(b) 1.20 litres for 15 uses(c) 1.35 litres for 20 uses(d) All options are correct

[SSC-JE :2017]

10. Pick up the correct statement in case ofwater supplyA. Pipes laid in trenches and pipes fixed

to walls are measured separatelyB. Cutting through walls and floors are

included with the itemC. Pipes are classified according to their

sizes and qualityD. In laying pipes, the method of

jointing and fixing is specificallyspecified(a) A only (b) B only(c) C only (d) A, B, C and D

[SSC-JE :2017]

11. In case of laying gullies, siphons,intercepting traps, the cost includes(a) Setting and laying(b) Bed concerting(c) Connection to drains(d) All options are correct

[SSC-JE :2017]

6. Environmental Engineering SSC-JE Civil Engineering [280]


12. For construction use at a village site, thelocal pond `water must be(a) Sieved(b) Boiled and filtered(c) Mixed with jiggery(d) Treated with chlorine

[SSC-JE : 2007]

2. Quality and Control of WaterSupply, Water Purification

1. The total solids in water are due to presenceof

(a) Colloidal and settleable solids(b) Suspended and floating solids(c) Suspended and dissolved solids(d) Colloidal and bacterial load

[SSC-JE : 2007]

2. At lower pH, the contact period requiredfor chlorination is(a) Lower (b) Higher(c) Same (d) None of these

[SSC-JE : 2007]

3. Disinfection of drinking water is done toremove(a) turbidity (b) odour(c) colour (d) bacteria

[SSC-JE : 2008]4. Permanent hardness of water can be

removed by(a) adding alum(b) adding lime(c) adding chlorine(d) zeolite process

[SSC-JE : 2008]

5. The % of chlorine in fresh bleachingpowder is about(a) 10 to 20 (b) 20 to 25(c) 30 to 35 (d) 40 to 50

[SSC-JE : 2009]

6. The maximum permissible limit forfluoride in drinking water is;(a) 0.1 mg/l (b) 1.5 mg/l(c) 5 mg/l (d) 10 mg/l

[SSC-JE : 2010]

7. Air valves in a distribution system areprovided at:

(a) Dead ends in the water distributionsystem

(b) Junction of main and branch pipes(c) Summit points on water mains(d) Places where the pressure is

minimum[SSC-JE : 2010]

8. Nitrates more than 45 mg/l in water leadto disease called:(a) Gastroenteritis(b) Mottled teeth(c) Polio(d) None of the above

[SSC-JE : 2010]

9. Hardness of water is caused by thepresence of the following in water:(a) Chlorides and sulphate(b) Calcium and magnesium(c) Nitrites and nitrates(d) Sodium and potassium

[SSC-JE : 2011]

10. The product of H+ ions and OH– ions in astrong alkali at 25ºC is(a) 0 (b) 1(c) 10–1 (d) 10–14

[SSC-JE : 2011]11. The permissible limit of arsenic in

drinking water as per the guidelines ofWHO is(a) 0.01 ppm (b) 0.05 ppm(c) 001 ppm (d) 0.005 ppm

[SSC-JE : 2013]

12. Which one of the following sequences isthe most suitable for treating raw surfacewater to make it suitable for drinkingpurpose?(a) Screening filtration

sedimentation disinfection(b) Screening disinfection

sedimentation filtration(c) Screening sedimentation

disinfection filtration(d) Screening sedimentation

filtration disinfection[SSC-JE : 2013]

13. The valve which protects the water meterfrom the damages of water hammer(a) Pressure relief valve(b) Stop cock

6. Environmental Engineering (Solutions) SSC-JE Civil Engineering [285]


CHAPTER-6 Environmental Engineering (Solutions)

1. Water Demand and Population Forecasting (Answer Key)

1 2 3 4 5 6 7 8 9 10d a d d d d b b d d11 12d d

2. Quality and Control Of Water Supply, Water Purification (Answer Key)

1 2 3 4 5 6 7 8 9 10c a d d c b c d b d

11 12 13 14a d a c

3. Sewage Characteristics and Design of Sewer and Appurtenaner (Answer Key)1 2 3 4 5 6 7 8 9 10a b b d d a b d b c11 12 13 14 15 16 17 18 19c d b c d d b c c

4. Treatment and Disposing of Sewage (Answer Key)

1 2 3 4 5 6 7 8 9 10a d b d b d a c d c11 12 13 14 15 16 17 18 19b c c d d b b - a

5. Air and Noise Pollution (Answer Key)

1 2 3 4 5 6 7

c b b a c c a

6. Environmental Engineering (Solutions) SSC-JE Civil Engineering [286]


SOLUTIONS

1. Water Demand And Population Forecasting (Solutions)

1. (d) The total water requirement of a city is generally taken as the maximum of minimum hourly

demand and maximum daily demand plus fire demand. Coincident draft is defined as the maximum of minimum hourly demand or aggregate of

maximum daily demand and fire demand

mh

md D

Qcoincident draft = maximum of

Q F

2. (a) Sluice valve or gate valve are used to regulate the flow of water in pipe network by dividing it

into number of sections. These values are placed at the summit points in the pipe as pressure tobe resisted by these values at this point is minimum requiring lower strength of the material thatintern reduces the cost of these values.

Air valves are used to ensure the safety of the pipe against failure. These valves are also placedat the summit point on either side of the gate valve where air inlet valve is provided on the D/Sand air relief valve is provided on U/S of the gate valve.

Scour valves/ drain valve / blow of valves are provided to drain the water and the scour of thesettled suspended impurities out from the pipe network.These valves are placed at the lower most points in the pipe network in order to ensure thegravity drain from either side of the gate value.

Check valve / reflux valves / non return valves are provided to check the flow of water only inone direction avoiding the flow of water in opposite direction.

These valves are placed on either side of the pump to check the flow of the water in single direct

3. (d)Water supply includes Collection, transportation and treatment of water Distribution of water to consumers Provision of hydrant for fire fighting

4. (d)Total water demand may be taken as 270lpcd. Domestic water demand may be taken as 135 to 225 lpcd. Industrial water demand may be taken as 50 to 450 lpcd Institutional water demand may be taken as 20 to 50 lpcd. Water for public use is in the range of 10 to 20 lpcd.

5. (d)The distribution system in water supplies is designed on the basis ofMaximum of (i) and (ii)

(i) Peak hourly demand phQ and

(ii) Maximum daily demand and fire demand mo DQ + F

It is called as coincident draft

7. Hydraulics SSC-JE Civil Engineering [297]


CHAPTER-7 HYDRAULICS

1. Fluid Properties, HydrostaticForces, Buoyancy and Floatation

1. For a fluid, the shear stress was found to bedirectly proportional to the rate of angulardeformation. The fluid is classified as(a) non-Newtonian fluid(b) Ideal fluid(c) Newtonian fluid(d) Thixotropic fluid

[SSC - JE : 2007]2. A U-tube manometer measures

(a) Local atmosphere pressure(b) Difference in pressure between two points(c) Difference in total energy between two

points(d) Absolute pressure at a point

[SSC - JE : 2007]3. The difference in pressure head, measured by a

mercury water differential manometer for a 20cm difference of mercury level will be(a) 2.72 m (b) 2.52 m(c) 2.0 m (d) 0.2 m

[SSC - JE : 2008]4. Poise is the unit of

(a) mass density(b) kinematic viscosity(c) viscosity(d) velocity gradient

[SSC - JE : 2008]5. Gauge pressure at a point is equal to

(a) absolute pressure plus atmosphericpressure

(b) absolute pressure minus atmosphericpressure

(c) vacuum pressure plus absolute pressure(d) None of the above

[SSC - JE : 2008]

6. Manometer is used to determine(a) water content and voids ratio(b) specific gravity and dry density(c) water content and specific gravity(d) None of the above

[SSC - JE : 2009]7. Pascal's law states that pressure at any point a

fluid at rest has(a) different magnitude in all directions(b) same magnitude, in all directions(c) zero magnitude in all directions

(d) None of the above[SSC - JE : 2009]

8. The magnitude of the buoyant force can bedetermined by:(a) Newton's law of viscosity(b) Archimede's principle(c) Principles of moments(d) none of the above

[SSC - JE : 2010]

9. Flow of fluid takes place due to its :(a) Viscosity(b) compressibility(c) Surface tension(d) Deformation under shear force

[SSC - JE : 2010]

10. The pressure intensity in kg/cm2 at any pointin a liquid is(a) w (b) w/h(c) h/w (d) whwhere w is unit weight of liquid in kg/cm3, thedepth of the point from liquid surface.

[SSC : JE : 2011]

11. The characteristic of an ideal fluid is(a) one which satisfies continuity equation(b) one which flows with least friction(c) one which obeys Newton's law of

Viscosity(d) frictionless and incompressible

[SSC - JE : 2012]

12. A rectangular plate 1.25 m 2.4 m isimmersed in a liquid of relative density 0.85with its 1.25 m side horizontal and just at thewater surface. If the plane of the plate makesan angle of 60° with the horizontal, thepressure force on one side of the plate of(a) 30.6 kN (b) 26.0 kN(c) 15.0kN (d) 30.0 kN

[SSC - JE :2012]13. The ratio of specific weight of a liquid to the

specific weight of pure water at a standardtemperature is called(a) Compressibility of liquid(b) Surface tension of liquid(c) Density of liquid(d) Specific gravity of liquid

[SSC - JE : 2012]

7. Hydraulics SSC-JE Civil Engineering [298]


14. Bulk modulus of fluid is the ratio of(a) shear stress to shear strain(b) increase in volume to the viscosityof fluid(c) increase in pressure to the volumetric

strain(d) critical velocity to the velocity of fluid

[SSC : JE : 2013]

15. The buoyancy depends upon the(a) Pressure with which the liquid is displaced(b) Weight of the liquid displaced(c) Viscosity of the liquid(d) Compressibility of the liquid

[SSC : JE : 2013]16. Manometer is a device used for measuring

(a) Velocity (b) Pressure(c) Density (d) Discharge

[SSC - JE : 2014]

17. Capillarity is due toI. surface tensionII. cohesionIII. viscosityIV. weight density of liquid(a) II, III (b) III(c) I (d) II, III, V

[SSC - JE : 2014]18. Pressure in terms of metres of oil (specific

gravity = 0.9) equivalent to 4.5 m of water is(a) 4.05 (b) 5.0(c) 3.6 (d) 0.298

[SSC - JE : 2014]19. Capillary rise is a phenomenon that is

attributed to the following properly of fluid(a) vapour pressure (b) viscosity(c) density (d) surface tension

[SSC - JE : 2014]20. Specific gravity has a unit:

(a)g/cc (b) 3kg/m

(c) 3N/m(d)No unit i.e., dimensionless

[SSC - JE : 2014]

21. The total energy line lies above the hydraulicgradient line by an amount equal to :(a) Sum of pressure, velocity and datum

heads

(b) Pressure head,P

γ

(c) Velocity head,2V

2g(d) Datum head, z

[SSC - JE : 2014]

22. A fluid, which is incompressible and is havingno viscosity is(a) Ideal fluid(b) Real fluid(c) Newtonian fluid(d) Non Newtonian fluid

[SSC - JE : 2014]

23. The relationship between atmospheric pressure

atmP gauge pressure gaugeP and absolute

pressure absP is given by:

(a) atm abs gaugeP P – P

(b) abs atm gaugeP P P

(c) abs atm gaugeP P – P

(d) atm abs gaugeP P P [SSC - JE : 2014]

24. With increase in temperature the viscosity ofair and water varies as(a) viscosity of air increases and viscosity of

water decreases(b) viscosity of air increases and viscosity of

water increases(c) viscosity of air decreases and viscosity of

water decreases(d) viscosity of air decreases and viscosity of

water increases[SSC - JE : 2015]

25. For stability of floating bodies, the meta centreshould be(a) Above the centre of gravity(b) Below the centre of gravity(c) Above the centre of buoyancy(d) Below the centre of buoyancy

[SSC - JE : 2015]

26. A vessel containing water of depth h is

accelerated upward with an acceleration ofg

2.The pressure at the bottom of the vessel is

(a) γh (b)γh2

(c) 2γh (d)3 γh2

[SSC - JE : 2015]

27. The point in the immersed body through whichthe resultant pressure of the liquid may betaken to act is known as(a) Metacentre

7. Hydraulics (Solutions) SSC-JE Civil Engineering [309]


CHAPTER-7 HYDRAULICS (Solutions)

1. Fluid properties, hydrostatic forces, buoyancy and floatation (Answer Key)

1 2 3 4 5 6 7 8 9 10a b c a c d b b d d11 12 13 14 15 16 17 18 19 20d c d c b b c b d d21 22 23 24 25 26 27 28 29 30c a b a a a b a b a

31 32 33 34 35 36 37 38 39 40b c b a b d c d b d41 42 43 44 45 46 47 48 49 50c a d a a c a b d b

51 52 53 54 55 56 57 58 59 60b - a d b b d a b c61 62 63 64 65c b c d d

2. Fluid Kinematics and Dynamics & Flow Measurements (Answer Key)

1 2 3 4 5 6 7 8 9 10- d c b b d b a d c

11 12 13 14 15 16 17 18 19 20c d a c b c A,c a c b

21 22 23 24 25 26 27 28 29 30c b b d d c a A,b,c b -

3. Flow through pipes and Dimensional analysis (Answer Key)

1 2 3 4 5 6 7 8 9 10b b a b a c a b b d11 12 13 14 15 16 17 18 19 20c a c d a a a b c c

21 22 23 24 25 26 27 28 29 30c c b a d c c d a d

31 32 33c c c

4. Open channel flow (Answer Key)

1 2 3 4 5 6 7 8 9 10d d b b a c c c c a11 12 13 14 15b a d - b

5. Hydraulic Machinery (Answer Key)

1 2 3 4 5 6 7 8 9 10a b a a b - c b d d11 12 13 14 15 16 17 18 19 20b c c c d c d a a a



SOLUTIONS

1. Fluid properties, hydrostatic forces, buoyancy and floatation

1. (c)As per the Newton’s law of viscosity shear stress (on a layer at a distance y) is directly proportional torate of angular deformation.

θτ d

dt

du

dy

τ μ du

dy

Where, shear stress Coefficient of viscosity or absolute viscosity or dynamic viscosity.

Ex. Air, H2O (Water), kerosene etc. Newtonian fluid obeys Newton’s law of viscosity Non-Newtonian fluid don’t obey Newton’s law of viscosity Ideal fluid is frictionless, incompressible and no surface tension

2. (b)U-tube manometer is used to measure law, medium and high positive and negative gauge pressure of liquidand gases.It consist of a glass tube bent in U-shape one end of which is connected to a point at which pressureis to be measured and the other end remains open to atmosphere.

3. (a)Given that mh 20 cm

hw = ?P for water differential manometer = rhP for mercury __________________ = 13.6 r hm

So, (P)water = (P)mercury

h = 13.6 r/ hm

h = 13.6 0.20

ωh = 2.72m

4. (c)Poise is the unit of dynamic viscosity

-12

N-sec1p 10

m



5. (b)

Atmospheric pressure is the pressure exerted by atmosphere man. Absolute pressure is the total pressure exerted on a system measured with respect to zero pressure level. Gauge pressure is the value of pressure above the atmosphere pressure. Vacuum pressure is the value of presence below the atmospheric pressure.

Gauge pressure = Pabs – Patm

Vacuum pressure = Patm – Pabs

6. (d)Manometer is used to measure the pressure at a point in the fluid.Manometer are classified as:-(a) Simple manometers(b) Differential manometers

7. (b)Pascal’s law:- It states that pressure or intensity of pressure at a point in static fluid is same in alldirections.

8. (b)Archimedes’s principle is the physical law of buoyancy.According to this principle, when a body is immersed in a fluid, an upward force exerted on the body bythe fluid and this upward force is equal to the weight of the fluid displaced by the body. This force iscalled force of buoyancy.

9. (d) Flow of fluid takes place under the applied of tangential or shear force (no matter how small force

may be) Viscosity, compressibility and surface tension are the characteristics of fluid.

10. (d)Pressure intensity (in kg/cm2) at any point in a liquid is given by, p = gh

ωp h

Where, - unit weight of liquid (kg/cm3)h – depth of point from the liquid surface

11. (d)Characteristics of an Ideal fluid are:

Incompressible No viscosity Friction less No surface tension

12. (c)Pressure on the plate is given by, P ρF gAx



Where, sinθx h

3 2.4P 10 9.81 1.25 2.4 sin 60º

2F

FP 30.585kN 30.8kN

13. (d)Specific gravity is defined as the ratio of specific weight of a liquid to the specific weight of pure water at

a standard temperature.ω

γγG .

Surface tension of a liquid is the property of liquid by virtue of which it tries to minimize its surfacearea. Surface tension is given by

F NσL m

Where, F Tensile forceL Length Surface tension

14. (c)Bulk modulus of fluid is defined as the ratio of increase in pressure to the volumetric strain and isgiven by

Δ /p

kV V

Where, k Bulk modulus,P increase in pressure will

15. (b)When a body is immersed is a fluid, an upward force is exerted by the fluid on the body which is equal tothe weight of the fluid displaced by the body and the fluid displaced by the body and this force iscalled the force of buoyancy.

16. (b)Manometer is a device which is used to measure the pressure in a fluid.

17. (c)Capillarity is a phenomena of rise or fall of a big surface in a small tube relative to adjacent levelof liquid when tube is held vertically in the liquid.Its value depends upon Specific weight of the liquid Diameter of the tube Surface tension of the liquid

Capillarity is due to surface tension of the liquid and adhesion of the liquid to the sides of the tube.

18. (b)hw = 4.5mSGoil = 0.8Hoil = ?

Bac = p0

w 0h S.G h


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8. Soil Mechanics SSC-JE Civil Engineering [337]


CHAPTER-8 Soil Mechanics

1. Introduction to Soil and itsProperties

1. If void ratio is 0.67 water content = 0.188and specific gravity = 2.68, the degree ofsaturation of soil is(a) 25% (b) 40%(c) 75% (d) 60%

[SSC - JE : 2007]

2. Which of the following statements is false?(a) Clay deposits are more porousthan sand beds(b) Presence of organic matter insolid decreases the bearingcapacity of the soil(c) The change of moisture contentchanges the value of angle ofrepose(d) None of these [SSC - JE : 2007]

3. Uniformity coefficient of well graded sand,is(a) less than 2(b) greater than 2(c) greater than 6(d) None of the above

[SSC - JE : 2008]

4. The moisture content of a soil below whichthe soil volume becomes constant is calledthe(a) liquid limit(d) plastic limit(c) shrinkage limit(d) all of these

[SSC - JE : 2008]

5. A sample of saturated clay-has a porosityof 0.562. The void ratio of the clay is(a) 1.283 (b) 0.438(c) 1.779 (d) 0.360

[SSC - JE : 2008]

6. The ratio of volume of voids to the totalvolume of soil mass is called(a) air content (b) prosoity(c) voids ratios (d) All of the above

[SSC - JE : 2009]7. When the plastic limit of a soil is greater

than the liquid limit then the plastic indexis reported as(a) negative(b) zero

(c) non-plastic(d)None of the above [SSC - JE : 2009]

8. Cohensionless soil is(a) silt (b) sand(c) clay (d) none of the above

[SSC - JE : 2009]

9. The property of a fluid which determinesits resistance to shearing stresses is called(a) viscosity (b) surface tension(c) adhesion (d) none of the above

[SSC - JE : 2009]

10. The ratio of liquid limit to plasticity indexfor a soil mass is called:(a) liquidity index(b) shrinkage ratio(c) consistency index(d) none of the above

[SSC - JE : 2010]

11. The coefficient of curvature for a wellgraded soil must be in the range:(a) 0.5 – 1.0 (b) 3.0 – 4.0(c) 4.0 – 5.0 (d) none of the above

[SSC - JE : 2010]

12. The moisture content of a soil, belowwhich the soil volume becomes constant, iscalled the:(a) liquid limit(b) shrinkage limit(c) plastic limit(d) none of the above [SSC - JE : 2010]

13. Relative density of compacted dense sandis approximately equal to(a) 0.4 (b) 0.6(c) 0.95 (d) 1.20

[SSC - JE : 2010]14. Relationship between dry density d

percentage air voids an water content w and

specific gravity G of any soil is

(a) a wd

(1 n )G

1 wG

(b) a wd

(1 n )G

1 wG

(c) a wd

(1 n )G

1 wG

8. Soil Mechanics SSC-JE Civil Engineering [338]


(d) a wd

(1 n )G

1 wG

[SSC - JE : 2011]

15. If the plasticity of a soil mass is zero, the is(a) Clay (b) Clayed silt(c) Sand (d) Silt

[SSC - JE : 2012]16. Water content soil of soil can

(a) be less than 0%(b) be greater than 100%(c) never be greater than 100%(d) take values o% to 100%

[SSC - JE : 2012]17. If the volume of voids is equal to the

volume of soilids in a soil mass, than thevalues of porosity and voids ratiorespectively(a) 1.0 and 0.0 (b) 0.0 and 1.0(c) 0.5 and 1.0 (d) 1.0 and 0.5

[SSC - JE : 2013]

18. The ratio Liquid limit - Water content

Plasticity Indexfor a soil

mass is called(a) Liquidity(b) Shrinkage ratio(c) Consistency index(d) Toughness index [SSC-JE : 2010]

19. The volume of voids to the total volume ofsoil is known as(a) propsity (b) void ratio(c) air ratio (d) air content

[SSC-JE : 2014]20. The fundament equation of void ratio (e)

specific gravity (G), water content (W) andthe degree of saturation p(S ) is

(a)p

Gwe

S (b)

p

eGW

S

(c)p

ewG

S (d) p

ewS

G

[SSC-JE : 2014]

21. If fineness modulus of a sand is 2.5, it isgraded as(a) very fine sand (b) fine sand(c) medium sand (d) coarse sand

[SSC-JE : 2014]

22. The relationship between void ration ‘e’ itis graded porosity ‘n’ is:

(a)1 e

n1 e

(b) e n(1 e)

(c)e

n1 e

(d)1 n

e1 e

[SSC-JE : 2014]

23. Gravel and sand belongs to the followingcategory of soils(a) alluvial (b) cohesive(c) expanse (d) marine

[SSC-JE : 2014]

24. When the plastic limit of a soil is greaterthan the liquid limit, then the plasticityindex is reported as:(a) 1 (b) Negative(c) Zero (d) Non–plastic(NP)

[SSC-JE : 2014]

25. When the plasticity index of a soil is zero,the soil is(a) Clay (b) Silt(c) Sand (d) Silty sand

[SSC - JE : 2015]26. Which of the following statements is true ?

(a) In a dry soil the voids are filledwith air(b) In a saturated soil all the void arefilled with water(c) In a partially saturated soil voids areoccupied by both air and water(d) All options are correct

[SSC-JE : 2017]

27. The void ratio for saturated soil is equal to_____ of water content and specific gravityof solids.(a) sum (b) product(c) difference (d) ratio

[SSC-JE : 2017]

28. Specific gravity of soil is(a) same for all sands(b) determined by hydrometer(c) less than 2 for most soils(d) more than 2.5 for most soils

[SSC-JE : 2017]

29. Density index for a natual soil is used toexpress(a) percentage voids(b) determined by hydrometer(c) shear strength of clays(d) specific gravity [SSC-JE : 2017]

8. Soil Mechanics (Solutions) SSC-JE Civil Engineering [345]


CHAPTER-8 Soil Mechanics (Solutions)

1 Introduction to Soil and its Properties (Answer Key)

1 2 3 4 5 6 7 8 9 10c a c c a b b b a d

11 12 13 14 15 16 17 18 19 20d c c c c b c c a a21 22 23 24 25 26 27 28 29 30b b a c c d b d b b31 32 33 34 35 36 37 38 39 40c d b d d b d a c d

41 42 43 44d d b a

2. Classification of Soil (Answer Key)

1 2 3 4 5 6 7 8 9 10b a d d a a c b c d11 12 13 14 15 16 17 18 19 20d c d a d a d d c c21c

3. Compaction and Consolidation (Answer Key)

1 2 3 4 5 6 7 8 9 10

d c b b c b a a c c

11 12 13 14

a a d b

4. Earth Pressure Theory, Stability Analysis of Slopes, Soil Stabilization and SoilExploration (Answer Key)

1 2 3 4 5 6 7 8

b b b b c d d a

5. Soil Foundation Engineering (Answer Key)

1 2 3 4 5 6 7 8 9 10c d b - c d a b a d

11 12 13 14 15 16 17c a c a d d c



SOLUTIONS

1 Introduction to Soil and its Properties (Solutions)

1. (c)Given that: e = 0.67

= 0.188S.G = 2.68S = ?

From formula, Se = G0.67 0.188 2.68S

0.752S 75.2%S

2. (a) Sand beds are more porous than clay deposits because sand particles are larger and the pore spaces

between the particles are also larger than clay particles. Presence of organic matter in solid decreases the bearing capacity of the soils because presence of

organic matter decrease the bulk density of soil and increase the moisture content which affect thestrength of soil.

The angle of repose refers to the maximum inclination angle for a pile of granular bulk soil beforeit fails under its own weight. Angle of repose is sometimes referred to as the “internal angle offriction”. Moisture content changes internal friction between soil particle and hence value ofrepose angle get affected.

3. (c)Coefficient of uniformity for well graded sandCu > 6

Coefficient of curvature for well graded soil is in the range of 1 to 3 Coefficient of uniformity for well graded gravel Cu > 4 Coefficient of uniformity for uniformly graded soil Cu 1 or < 2

4. (c)At shrinkage limit, soil volume becomes constant.



At shrinkage limit soil is completely saturated and this limit further reduction in water contentdoes not leads to the reduction is volume of soil because below shrinkage limit replacement ofwater by air is equal volume takes place.

5. (a)Relationship between porosity and void ratio is given by-

1

ne

n

Where, e void ration porosity

0.5621.283

1 0.562e

6. (b)Porosity is the ratio of volume of void to the total volume of soil mass and is given by

V

T

Vn

V

Where, VV = volume of voidVT = total volume of soil mass

7. (b)Plasticity index is given byP.I = WL – WP

Where, P.I = Plasticity indexWL = liquid limitWP = plastic limit

If WP> WL

Then, P.I 0 Plasticity index can never be negative Such soil whose plasticity index (P.I) is zero is known as non-plastic soil.

8. (b)- Cohesionless soil is sand.- Clay is cohesive soil

9. (a)Viscosity is defined as the property of fluid which determines its resistance to shearing stresses.

duτ = μdy

Where, = shear stress = viscosity

velocity gradientdu

dy

10. (d)(1) Liquidity index is given by:

9. Transportation Engineering SSC-JE Civil Engineering [368]


CHAPTER-9 Transportation Engineering

1. Introduction to HighwayDevelopment and Geometric Design

1. For the preparation of highways(a) Longitudinal sections are required(b) Cross-sections, are required(c) (a) and (b) are required(d) None of the above

[SSC-JE : 2007]

2. The camber for hill roads in case ofbituminous surfacing is adopted as(a) 2.0 % (b) 2.5 %(c) 3.0 % (d) 3.5 %

[SSC-JE : 2011]

3. In highway construction on superelevatedcurves, the rolling shall proceed from(a) Sides towards the centre(b) Centre towards the sides(c) Lower edge towards the upper edge(d) Upper edge towards the lower edge

[SSC-JE : 2013]

4. The ruling minimum radius of the curvefor ruling design speed Vm/sec,coefficient of friction f, acceleration dueto gravity g m/sec2 and super-elevation eis given by(a) V2/(e–f)g (b) V2/(f–e)g(c) V2/(e+f)g (d) V2/(e+f)2g

[SSC-JE :2014]

5. Camber in the road is provided for(a) Counteracting the centrifugal force(b) Effective drainage(c) Having proper sight distance(d) Avoiding overturning

[SSC-JE :2014]6. The centrifugal force on a car moving on

a horizontal circular curve is proportionalto :

(a)2Wv

(gR)(b)

Wv

(gR)

(c)2

2

Wv

(gR )(d)

2

Wv

(gR )

[SSC-JE : 2014]

7. In plains the minimum length oftransition curve is(a) V2/R (b) V2/1.5 R(c) 2.7 v2/R (d) V2/24R

[SSC-JE :2017]8. The shift of the transition curve of radius

300 m and length 48 m is _____(a) 0.32 m (b) 0.42 m(c) 0.52 m (d) 0.62 m

[SSC-JE :2017]9. According to the recommendations of

Nagpur Conference the width formationof an ideal National Highway in hardrock cutting is ______(a) 8.9 m (b) 7.9 m(c) 6.9 m (d) 6.5 m

[SSC-JE :2017]

10. The Stopping Sigh Distance’ dependsupon(a) Total reaction time of the driver(b) Speed of the vehicle(c) Efficiency of brakes(d) All of the given options

[SSC-JE :2017]

11. The cross-sections for a highway is takenat __________(a) Right angle to the center line(b) 30 meters apart(c) Intermediate points having abrupt

change in gradient(d) All options are correct

[SSC-JE :2017]

12. Pick up the incorrect statement from thefollowing.The width of the right-of-way is decidedto accommodate(a) Formation width(b) Side slopes(c) Horizontal curve(d) Vertical curve

[SSC-JE :2017]

9. Transportation Engineering SSC-JE Civil Engineering [369]


13. If L is the length of vehicles in meters, Cis the clear distance between twoconsecutive vehicles (stopping sightdistance), V is the speed of vehicles inkm per hour, the maximum number N ofvehicles/hour is

(a)1000V

NL C

(b)L C

N1000 V

(c)1000L

NC V

(d)1000C

NL V

[SSC-JE :2017]

14. The conventional sign shown in thefigure below

(a) Road bridge (b) Railway bridge(c) Canal bridge (d) Aqueduct

[SSC-JE :2017]

15. The conventional sign shown in thefigure below represents a

(a) Bridge carrying railway below theroad

(b) Bridge carrying road below railway(c) Bridge carrying road and railways at

the same level(d) A level crossing

[SSC-JE :2017]

16. On horizontal curve, if the pavement iskept horizontal across the alignment, thenthe pressure on the outer wheels will be(a) More than the pressure, under inner

wheels

(b) Less than pressure under inner wheels(c) Equal to the pressure on inner wheels(d) Zero [SSC-JE : 2015]

17. The absolute minimum radius of curvefor safe operation, for a speed of 110kmph is(a) 110 m (b) 440 m(c) 220 m (d) 577 m

[SSC-JE :2017]

18. What is the psychological widening of apavement on horizontal curve of radius230 m for ruling speed 80 kmph?(a) 0.455 m (b) 0.555 m(c) 0.186 m (d) 0.136 m

[SSC-JE :2017]

2. Traffic Engineering

1. If the stopping distance and averagelength of a vehicle are 18 m and 6 mrespectively, then the theoreticalmaximum capacity (vehicles per hour) ona traffic lane at a speed of 10 m/sec is(a) 1500 (b) 2000(c) 2500 (d) 3000

[SSC-JE : 2013]

2. A flyover segregates traffic with respectto :(a) Direction (b) Grade(c) Speed (d) class of vehicle

[SSC-JE : 2014]3. The shape of the STOP sign according to

IRC : 67-2001 is(a) Circular (b) Rectangular(c) Triangular (d) Octagonal

[SSC-JE : 2015]4. The cumulative speed distribution curve

is usually adopted for geometric designof highway. The percentile speed adoptedfor geometric design is _____(a) 85th percentile speed(b) 90th percentile speed(c) 98th percentile speed(d) 99.9th percentile speed

[SSC-JE :2017]

9. Transportation Engineering (Solutions) SSC-JE Civil Engineering [373]


CHAPTER-9 Transportation Engineering (Solutions)

1. Introduction To Highway Development And Geometric Design

1 2 3 4 5 6 7 8 9 10c b c c b a c a b d11 12 13 14 15 16 17 18d d a a a a b b

2. Traffic Engineering1 2 3 4a b d c

3. Highway Materials, Pavement Design and its Maintenance1 2 3 4 5 6 7 8 9 10d c c - b d c a b a11 12 13 14 15 16 17 18 19b b d d d b - b b

4. Railways and Airport1 2 3 4 5 6 7 8 9a c c b c d b c c

SOLUTIONS

1. Introduction To Highway Development And Geometric Design1. (c)

For the preparation of highway we deals with Cross-section elements Sight distance considerations Horizontal alignment details Vertical alignment details Intersection elements

2. (b)Camber is also called cross-slope, is defined as the transverse slope provided to the road to drain-off surface water from the pavement. Types of camber(a) Straight line camber(b) Parabolic or elliptic camber(c) Combination of straight line and parabolic camber

9. Transportation Engineering (Solutions) SSC-JE Civil Engineering [374]


Camber of a road depends on type of road and rainfall.Type of pavement Rainfall

Heavy Light

Cement concrete or hightype Bituminous

pavement

2% 1.7%

Thin bituminous pavement 2.5% 2%

Water Bond Medium(WBM) Or Gravel Road

3% 2.5%

Earth Road 4% 3%

3. (c) In highway construction, rolling starts from sides and proceed to centre. In highway construction on super elevated curves, rolling is done from lower edge towards the

upper edge.

4. (c)Ruling minimum radius of the curve is given by-

Ruling minimum radius =2v

(e + f)g

Where, V – Ruling design speed (m/sec)e – Rate of super elevation

Value of e is taken as 0.07 (for plane & Rolling road and hill road coveredwith snow)

f – Co-efficient of transverse friction (f = 0.15)g – Acceleration due to gravity (9.8m/sec2)

5. (b)Camber or cross-slope is provided to the road surface because of the following reasons:-(a) To prevent the entry of surface water into the pavement layers and the subgrade soil through

pavement.(b) To prevent the entry of water into the bituminous pavement layers, as continued contact with

water causes stripping of bitumen from the aggregates and results in deterioration of thepavement layer.

To remove the rain water from the pavement surface as quickly as possible and to allow thepavement to get dry soon after the rain because in wet pavement skid resistance decreasesconsiderably.

6. (a)When any vehicle moves in horizontal curve then it is subjected to centrifugal force which acts inoutward direction of the road.


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10. Surveying SSC-JE Civil Engineering [385]


CHAPTER-10 Surveying

1. FUNDAMENTALS OF SURVEYINGAND LINEAR MEASUREMENTS

1. The curvature of the earth's surface is taken intoaccount if the extent of survey is more than(a) 100 km2 (b) 160 km2

(c) 500 km2 (d) 260 km2

[SSC-JE : 2007]2. The limiting length of an offset does not depend

upon(a) accuracy of the work(b) method of setting out perpendiculars

(c) scale of plotting(d) indefinite features to be surveyed

[SSC-JE : 2008]3. The construction of optical squares is based on

the principle of optical(a) Reflection (b) refraction(c) double refraction (d)double reflection

[SSC-JE : 2008]4. The survey in which the curvature of the Earth is

taken into account is called(a) Geodetic survey(b) Plane survey(c) Hydrographical survey(d) Topographical survey

[SSC-JE : 2009]5. In a metric chain, number of links per meter run

can be(a) 2 (b) 5 (c) 8 (d) 0

[SSC-JE : 2009]

6. Cross staff is used for:(a) setting out right angle(b) measuring horizontal angle(c) both (a) and (b)(d) none of the above

[SSC - JE:2011]

7. The fixed point whose elevation is known, iscalled as(a) benchmark (b) change point(c) reduced level (d) station

[SSC-JE :2011]

8. Which of the following scales is the smallestone?(a) 4:200000 (b) 1 cm = 5000 m(c) 1 cm = 50 m (d) RF= 1/50000

[SSC-JE : 2012]

9. When the curvature of earth is taken intoaccount, the surveying is called as(a) Plane surveying(b) Preliminary surveying(c) Geodetic surveying(d) Hydrographic surveying

[SSC-JE : 2012]10. Ranging is defined as

(a) measuring the distance from startingpoint

(b) establishing intermediate points on achain line

(c) the distance between end pointsa point on a chain line

(d) a point on a chain line[SSC-JE :2013]

11. A line joining some fixed points on the mainsurvey lines is called as(a) check line (b) tie line(c) chain line (d) baseline

[SSC-JE : 2013]12. The main principle of field surveying is to work

from(a) higher level to lower level(b) lower level to higher level(c) part to whole(d) whole to part

[SSC-JE :2013]13. offsets “are

(a) lateral measurements from line(b) ties or checks lines which are perpendicular

to chain line(c) sets of minor measurements in chain

surveying(d) Chain lines which go out of alignments

[SSC-JE : 2013]14. The fundamental principal of surveying is to

work from the(a) whole to part(b) part to Whole(c) lower level to higher level(d) higher level to lower level

[SSC-JE : 2014]

15. Which of the following statements in respect of emap A having scale 1: 1000 and another map Bhaving scale 1:5000 is true ?(a) Map A is a large scale map compared to map

B(b) Map B is a large scale map compared to map

A

(c) Map B is a more detailed map compared tomap A

(d) None of the above

10. Surveying SSC-JE Civil Engineering [386]


[SSC-JE : 2014]

16. The correction to be Applied lo each 30 m chainlength for a line measurement along a slope ofis(a) 30(1 – cos) (b) 30(1– sin)(c) 30 (1– tan ) (d) 30(1 – cot)

[SSC-JE :2014]

17. The magnetic declination is the differencebetween(a) True meridian and false meridian(b) False meridian and true meridian(c) True meridian and magnetic meridian(d) Magnetic meridian and false meridian

[SSC-JE : 2014]

18. The type of surveying which requires least officework is (least calculation):

(a) Theodolite surveying

(b) Tacheometry(c) Trignometrical levelling(d) Plane table surveying

[SSC-JE : 2014]19. When 1 cm on a map represents 10m on the

ground, the representative fraction of the scale is

(a)1

10000(b)

1

10

(c)1

100(d)

1

1000[SSC-JE : 2014)]

20. Mean sea level (MBL) adopted by survey ofIndia for reference, in located at(a) Kolkata (b) Mumbai(c) Karachi (d) Delhi

[SSC - JE: 2015]

21. Under which condition highest water cementratio is used(a) Heavy sections such as piers, foundations

etc. exposed to alternate wetting and drying(b) Heavy sections such as piers foundation etc,

protected against and frost(c) Hydraulic structure exposed to rain and snow(d) Light structural member exposed to alternate

wetting drying[SSC - JE:2015]

22. The distance between to brass rings in asurveyor’s chain is(a) 20 cm (b) 40 cm(c) 75 cm (d) 1 m

[SSC-JE :2015]

23. Survey line provided to verify the accuracy of theframework is kwon as(a) tie line (b) base line(c) subsidiary line (d) check line

[SSC-JE :2015]

24. The total number of links provided in Gunter’schain is(a) 132 (b) 100(c) 66 (d) 50

[SSC-JE :2015]25. Geodetic survey is different from plane because

of

(a) Very large area is covered

(b) The curvature of the earth is, considered

(c) Undulations of the topography(d) The large differ once of elevations

[SSC-JE :2017]

26. A scale representing either three units or onlyone unit and its fraction upto second place ofdecimal point is

(a) Diagonal scale (b) Comparative scale

(c) Vernier scale(d) Shrunk scale[SSC-JE :2017]

27. Difference in length of an arc and its subtendedchord on earths surface for a distance of 18.2 kmis(a) 10 mm (b) 15 mm(c) 22 mm (d) 100 mm

[SSC-JE :2017]

28. Chain surveying is most suitable when(a) The ground is fairly levelled and open with

simple details

(b) The area is small in extent

(c) Plans are required on a large scale(d) All options are correct

[SSC-JE :2017]

29. Every 20 m chain should be accurate to within(a) ±2 mm (b) ±5 mm(b) ±8mm (d) None of the above

[SSC-JE :2017]

30. Method used for chaining on sloping ground is(a) By stepping method(b) By hypotenuse allowance method(c) By clinometer method(d) Both stepping method and hypotenuse

method[SSC-JE :2017]

10. Surveying (Solutions) SSC-JE Civil Engineering [397]


CHAPTER-10 Surveying (Solutions)1. Fundamentals of Surveying And Linear Measurements (Answer key)

1 2 3 4 5 6 7 8 9 10d d d a b a a b c b11 12 13 14 15 16 17 18 19 20b d a a a a c d d b21 22 23 24 25 26 27 28 29 30b a d b b a a d b d31 32 33 34 35 36 37 38 39 40a b b d d d d d d -41 42 43 44 45 46 47 48 49 50a a d a a a b c b b51 52 53 54 55 56 57 58 59 60a b d c c a c b b b61 62 63 64 65a a a - c

2. Theodolites, Compass surveying, Transverse Surveying, Plane Table surveyingand Contouring (Answer key)

1 2 3 4 5 6 7 8 9 10b b a b d b d b d b11 12 13 14 15 16 17 18 19 20b c a a a d c d a c21 22 23 24 25 26 27 28 29 30b d a a c c c b a d31 32 33 34 35 36 37 38 39 40c d d b a c b a d d

41 42 43 44 45 46 47 48 49 50b b d b a a c c b a51 52 53 54 55 56 57 58b b b d c d d a

3. Levelling (Answer key)

1 2 3 4 5 6 7 8 9 10a b b - a a b a b b11 12 13 14 15 16 17 18 19 20a b a c d a b d c a21b

4. Tacheometric Surveying, Curves and Miscellaneous-(Answer key)

1 2 3 4 5 6 7 8 9 10a b a a d a - b a b11 12d b



Solutions1. Fundamentals of Surveying and Linear Measurements (Solutions)

1. (d)

Surveying is the art of determining relative position of points on above or beneath the earth bytaking direct and indirect measurement of distance, direction and elevation

Type of survey (based on accuracy desired)(a) Plane survey Curvature of earth is not considered Suitable for small area Used in various engineering projects like construction of dams, highways, railway lines canals

etc.

(b) Geodetic survey Curvature of earth is considered Suitable for large area High degree of precision

Note:-Two plumb lines at two different places on earth surface will be parallel to each in plane survey.However in geodetic survey they will intersect at centre of the earth.-The curvature of the earth’s surface is taken into account if the extent of survey is more than

2195 km .

Classification based on place of survey(a) Land survey Topographical survey: – To know general topography of the area Cadastral survey: – To define property line City survey: – to define services in a city like road network, water supply lines, sewer lines,

telephone lines.(b) Hydrographic survey:

It is done to know features under water

(c) Aerial survey:

It is carried out by taking the aerial photographs with cameras fitted to airplanes, helicoptersetc.

This survey is required for preparing large scale maps of an area.Classification based on instrument used:(a) Chain survey(b) Traverse survey(c) Levelling(d) Tachometry(e) Plane tabling(f) Triangulation



(g) EDM survey(h) Total station survey(i) Satellite survey

2. (d)

Limiting length of the offset is the displacement of the detail on the drawing sheet from itscorrect position.

Displacement should not be more than 0.25mm The limiting length of the offset depends on(a) The scale of the plot

(b) Error in the direction and length of a line

(c) The desired level of accuracy

3. (d)

Optical square is a surveyor’s hand instrument used for laying of sight angles It uses a pentaprism to reflect and refract a beam or sighting angles that are multiple of 90 or

45 It employs two mirrors at 45 angle. It works on the optical phenomenon of double reflection.

4. (a)

Geodetic survey The survey in which the curvature of the earth is not taken into account Suitable for small area Lower degree of accuracy Examples:– various engineering project like construction of dams, highways, railways line,

canal etc.Hydrographical survey This survey is done to know the features under water. Basic purpose of this survey is to establish the shore line. Apart from this, This survey is done

to determine water supply , navigation possibility under water construction etc.Topographical survey This survey is done to know the general topography of the area.

5. (b)

Surveying chains are measuring instrument commonly used for measuring distances It is used when accuracy of measurements is not too high. It is made by connecting the links in series Links are made of galvanized steel bent into loops .Depending upon the length of the chain, these are divided into following types–

1. metric chains

2. steel chains

3. gunter’s chains or surveyor’s chain

11. Irrigation Engineering SSC-JE Civil Engineering [431]


CHAPTER-11 IRRIGATION ENGINEERING

1. Water requirement of Crops1. The discharge capacity required at the outlet

to irrigate 2600 ha of sugarcane having a kordepth of 17 cm and a kor period of 30 days is

(a) 32.3m /s (b) 31.71m /s

(c) 314.7m /s (d) 30.18m /s[SSC-JE : 2011]

2. The water utilizable by planes is available inthe form of(a) Gravity water(b) Hygroscopic water(c) Capillary water(d) Chemical water [SSC-JE : 2013]

3. The ratio of the quantity of water stored in theroot zone of the crops to the quantity of wateractually delivered in the field is known as(a) Water use efficiency(b) Water conveyance efficiency(c) Water application efficiency(d) Water storage efficiency

[SSC-JE :2014]

4. Irrigation efficiency of an irrigation system isratio of(a) Water reaching the farm to water

delivered from the source(b) Crop yield to total amount of water used is

a field(c) Water actually stored in root zone to water

delivered to the farm.(d) Water actually utilized by growing crops

to water delivered from the source[SSC-JE : 2014]

5. On rolling land, the method of applying wateris(a) Check flooding (b) Free flooding(c) Border flooding (d) Furrow flooding

[SSC-JE : 2017]6. Intensity of irrigation is

(a) The percentage of culturable commandedarea proposed to be irrigation annually

(b) Is always more than 100%(c) Is the percentage that could be ideally

irrigated(d) All option are correct

[SSC-JE : 2017]

7. The filed irrigation requirement is computedas(a) Consumptive use + filed application

losses(b) Net irrigation requirement + filed

application losses(c) Net irrigation requirement + conveyance

losses(d) Consumptive use + conveyance losses

[SSC-JE : 2017]

8. The state of the soil when plants fail to extractsufficient water for their requirements is(a) Maximum saturated point(b) Permanent wilting point(c) Ultimate utilization point(d) None of these [SSC-JE : 2017]

9. The filed capacity of a soil is 25%, itspermanent wilting point is 15% and specificdry unit weight is 1.5. if the depth of rootzone of a crop is 80cm. the storage capacityof the soil is

[SSC-JE : 2017 ]

10. A sprinkler irrigation system is suitable when(a) the land gradient is steep and the soil iseasily erodible(b) the soil is having low permeability(c) the water table is low(d) the crops to be grown have deep roots[SSC-JE : 2017]

11. If the irrigation efficiency if 80%, conveyancelosses are 20% and the actual depth ofwatering is 16cm, the depth of water requiredat the canal outlet is(a) 10 cm (b) 15 cm(c) 20 cm (d) 25 cm

[SSC-JE : 2017]

12. The intensity of irrigation means(a) Percentage of culturable commanded area

to be irrigated annually(b) Percentage of gross commanded area to be

irrigated annually(c) Percentage of the mean of culturable

commanded area the gross commandedarea to be irrigated annually

(d) Total depth of water supplied by thenumber of waterings

[SSC-JE : 2017]

11. Irrigation Engineering SSC-JE Civil Engineering [432]


2. Hydraulic structures1. The upper surface of weir over which water

flows is knows as(a) Crest (b) Sill(c) Vein (d) Contracta

[SSC-JE : 2009]

2. A submerged weir is one in which the waterlevel on the down stream side of the weir is(a) Just at the crest level(b) Below the crest level(c) Above crest level(d) At same elevation as water surface on

upstream [SSC-JE : 2010]

3. Lining of irrigation canals(a) Decreases the water logging of an area(b) Increases the water logging of an area(c) Does not change the water logging of an

area(d) Increase evaporation

[SSC-JE :2011]4. The best alignment for canal is when it is

aligned along(a) Valley line (b) Stream line(c) Contour line (d) Ridge line

[SSC-JE : 2012]

5. If D is the depth of scour below original bedthen the width of launching apron is generallytaken as(a) 1.5 D (b) 2.5 D(c) 1.2 D (d) 2.0 D

[SSC-JE : 2012]

6. A river training work is generally requiredwhen the river is(a) Aggrading type(b) Meandering type(c) Degrading type(d) Both (a) and (c)

[SSC-JE : 2013]

7. For unlined canals, the freeboard is measuredfrom the(a) Full supply level to top of the bank(b) Top of the bank to bed of the canal(c) Full supply level to top of the down(d) None of these

[SSC-JE : 2014]

8. For lined canals, the freeboard in measuredform the(a) Full supply level to the top of the lining(b) Full supply level to the top of the bank

(c) Top of the bank to the top of the limit(d) Full supply level to the top of the down

[SSC-JE : 2014]

9. The most desirable alignment of an irrigationcanal is along(a) The contour line(b) The ridge line(c) Normal to contour line(d) The valley line [SSC-JE :2015]

10. A canal, designed to irrigation throughout theyear is(a) Permanent canal(b) Perennial canal(c) Continuous canal(d) Green canal [SSC-JE : 2017]

11. Canal normally used for diversion of floodwater of a river is(a) Feeder canal(b) Inundation canal(c) Ridge canal(d) Contour canal [SSC-JE : 2017]

12. A contour canal is(a) Irrigation only on one side(b) Does not needs bank on higher side(c) Is generally aligned parallel to the contour

of the area(d) All option are correct

[SSC-JE : 2017]13. Why do we need to do the lining of the canal

A. To minimize seepage losses in canalB. To prevent erosion of bed and sides due to

high velocitiesC. To decreases the discharge in the canal

section by increasing the velocity(a) Only A (b) Only A and B(c) Only C (d) All A, B and C

[SSC-JE : 2017]

14. The ‘surcharge storage’ in a dam reservoir isthe volume of water stored between(a) Minimum and maximum reservoir levels(b) Minimum and normal reservoir levels(c) Normal and maximum reservoir levels(d) None of these [SSC-JE : 2017]

15. Pick up the correct sequence of the part of acanal system form the following.(a) Head work – distributary – branch canal –

minor(b) Head works – main canal – branch canal

distributary – minor

11. Irrigation Engineering (Solutions) SSC-JE Civil Engineering [434]


CHAPTER-11 IRRIGATION ENGINEERING (Solutions)

1. Water Requirement of crops (Answer Key)

1 2 3 4 5 6 7 8 9 10b c c d b a b b c a11 12d a

2. Hydraulics structures (Answer Key)

1 2 3 4 5 6 7 8 9 10a c a d a d a a b A,b11 12 13 14 15 16 17 18 19 20b d - * b a a a b a21 22 23d d c

SOLUTIONS

1. Water Requirement of crops (Solutions)1. (b)

Given that, A = 2600 haFor depth (D) = 17 cm = 0.17 mB = 30 days

Relation between duty and delta is given by8.64B (days)

DΔ(m)

28.64B 30 m

D 1524.7050.17 cumec

So,4 3

32600 10 mQ 1.7052 1.71m /sec

1524.705 sec

2. (c)Gravity water: Water which can be removed by the action of gravity is called gravity waterand the remaining water is called field capacity.Capillary water: Water is between hygroscopic and field capacity is held in position due tointermolecular attraction. Out of field capacity entire amount of water cannot be extracted byplants and therefore, the water which is available or removed by plants is called availablemoisture. After extracting the available moisture the water content that is reached is calledwilting point.

If water content falls below the wilting point the plant will not be able to survive and wood wilt upor dry up.Hygroscopic water:

This is the amount of water adsorbed by a soil when an over dry sample is kept in freeatmosphere.

Hygroscopic capacity for different type of soil is as follows;Sand 3% , silt 7% , clay 17%Chemical water:-



It is the water that is present in intermolecular bonds of the soil particles.

3. (c)Water conveyance efficiency:

It is the ratio of amount of water deliver to the field to amount of water diverted from reservoir orriver.

100fc

r

w

w

Water application efficiency:-It is the ratio of amount of water stored in root zone to the amount of water deliver to the field.

100sa

f

w

w

ws = wf – Runoff – Percolation Water application efficiency is also known as farm efficiency.

Water use efficiency (u): It is the ratio of water used beneficially or consumptively to the water deliver to the field

100uu

f

w

w

Water storage efficiency (s) It is the ratio of actual water stored in the root zone to the water needed to be stored to bring the

moisture content upto field capacity.Water actually stored in root zone

100Water which was to be storeds

4. (d)Irrigation efficiency:

Efficient use of irrigation water is an obligation of each user as well as of the planners. Even, under the best neutral irrigation, not all the water applied during an irrigation is stored in the

root zone. Efficiency is the ratio of water output to the water input and is expressed as percentage. The objective of efficiency concepts is to show when improvements can be made which will result

in more efficient irrigation.

5. (b)

Free flooding also called as ordinary flooding or wild flooding because the movement of water isnot restricted.



This method is suitable for rolling land also for closely growing crops.

6. (a)Intensity of irrigation:It is defined as the percentage of culturable commanded area proposed to be irrigated duringeither a crop season or during a year.

7. (b)Field irrigation requirement is the amount of water required to meet ‘net irrigationrequirements’ plus the water lost in percolation in the field water courses, field channels and infield applications of water.

a

NIRFIR

NIR Net irrigation requirementaWater application efficiency

8. (b)Permanent wilting point

It is also known as wilting coefficient It is the water content at which plants can no longer extract sufficient water from the soil for its

growth If the plant does not get sufficient water to meet its needs, it will wilt permanently. The permanent wilting point depends upon the rate of water used by the plant, the depth of the

root zone and the water holding capacity of the soil.

9. (c)Given that,

field capacity (F.C) = 25%Wilting point () = 15%Specific dry unit weight (S.G) = 1.5Depth of root zone (d) = 80 cm

Storage capacity of the soil = ? Storage capacity of the soil given by

' d

w

rd d FC

r

1.5 0.80 0.25 0.15

0.12 m ' 12cmd

10. (a)Sprinkler irrigation system

In this method of irrigation water is supplied through a network of pipes and pumps This method is suitable when topography is irregular or rolling and soil is easily credible. When water table is high When water is not easily available For more permeable as well as less permeable soil


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