01. Building Materials
Transcript of 01. Building Materials
Junior Engineer
SSC-JEStaff Selection Commission
www.madeeasypublications.org
Publications
Also useful for RRB-JE Mains as well as various public sector examinations and other competitive examinations
Previous Years’ Solved Papers : 2007-2019
Civil Engineering Topicwise Objective Solved Questions
MADE EASY PUBLICATIONS has taken due care in collecting the data and providing the solutions, before publishing this book. Inspite of this, if any inaccuracy or printing error occurs then MADE EASY PUBLICATIONS owes no responsibility. MADE EASY PUBLICATIONS will be grateful if you could point out any such error. Your suggestions will be appreciated.
© All rights reserved by MADE EASY PUBLICATIONS. No part of this book may be reproduced or utilized in any form without the written permission from the publisher.
MADE EASY Publications
Corporate Office: 44-A/4, Kalu Sarai (Near Hauz Khas Metro Station), New Delhi-110016E-mail: [email protected]: 011-45124660, 08860378007
Visit us at: www.madeeasypublications.org
SSC-JE : Civil Engineering Previous Years’ Solved PapersCopyright © by MADE EASY Publications.All rights are reserved. No part of this publication may be reproduced, stored in or introduced into a retrieval
system, or transmitted in any form or by any means (electronic, mechanical, photo-copying, recording or
otherwise), without the prior written permission of the above mentioned publisher of this book.
First Edition: 2019
Second Edition: 2020
Publications
Staff Selection Commission-Junior Engineer has always been preferred by
Engineers due to job stability. SSC-Junior Engineer examination is conducted
every year. MADE EASY team has deeply analyzed the previous exam papers and
observed that a good percentage of questions are repetitive in nature, therefore
it is advisable to solve previous years papers before a candidate takes the exam.
The SSC JE exam is conducted in two stages as shown in table given below.
Papers Subject Maximum Marks Duration
Stage 1:
Paper-I : Objective type
(i) General Intelligence & Reasoning
(ii) General Awareness
(iii) General Engineering : Civil & Structural
50 Marks
50 Marks
100 Marks
2 hours
Stage 2:
Paper-II : Conventional Type
General Engineering : Civil & Structural 300 Marks 2 hours
Note: In Paper-I, every question carry one mark and there is negative marking of ¼ mark for every wrong answer.
Candidates short-listed in Stage 1 are called for Stage 2. On the basis of combined score in Stage 1 and Stage 2, final
merit list gets prepared.
MADE EASY has taken due care to provide complete solution with accuracy. Apart from Staff Selection Commission-Junior
Engineer, this book is also useful for Public Sector Examinations and other competitive examinations for engineering graduates.
I have true desire to serve student community by providing good source of study and quality guidance. Any suggestion
from the readers for improvement of this book is most welcome.
With Best Wishes
B. Singh
CMD, MADE EASY
Preface
Syllabus of Engineering Subjects (For both Objective and Conventional Type Papers)
Civil EngineeringBuilding 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.
(v)
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.
nnnn
(vi)
(vii)
Chapter 1Building Materials ................................... 1
1. Bricks ........................................................................................... 1
2. Stones ......................................................................................... 5
3. Timbers ...................................................................................... 8
4. Cement & Lime ......................................................................11
5. Concrete Technology ..........................................................26
6. Paints ........................................................................................49
7. Miscellaneous ........................................................................50
Chapter 2Estimating, Costing and Valuation .....140
1. Estimates .............................................................................. 140
2. Rate Analysis, Valuation and Miscellaneous ............ 151
Chapter 3Surveying .............................................185
1. Fundamental Concepts of Surveying ........................ 185
2. Theodolites, Compass and Traverse Surveying ...... 193
3. Levelling and Contouring ............................................... 199
4. Tacheometric, Curve & Hydrographic Surveying ... 205
5. Miscellaneous ..................................................................... 207
Chapter 4Soil Mechanics .....................................243
1. Properties, Classification of Soils & Permeability ... 243
2. Consolidation and Compaction ................................... 251
3. Earth Pressure Theory, Stability Analysis of Slopes,
Soil Stablization and Exploration................................. 253
4. Foundation Engineering ................................................. 256
Chapter 5Hydraulics ............................................279
1. Fluid Properties, Hydrostatic Forces ........................... 279
2. Fluid Kinematics & Dynamics and
Flow Measurements ......................................................... 288
3. Flow Through Pipes and Dimensional Analysis ...... 293
4. Open Channel Flow .......................................................... 298
5. Hydraulic Machinery ........................................................ 300
Chapter 6Irrigation Engineering .........................340
1. Water Requirement of Crops ......................................... 340
2. Hydraulics Structures ....................................................... 343
3. Hydrology and Miscellaneous ...................................... 346
Chapter 7Transportation Engineering ...............362
1. Highway Geometric Design & Planning .................... 362
2. Traffic Engineering ............................................................ 365
3. Highway Materials, Pavement Design & Maintenance .. 366
4. Railways ................................................................................ 369
Contents
Civil EngineeringObjective Solved Papers Paper-I
(viii)
7. Theory of Columns and Shear Centre ........................ 434
8. Miscellaneous ..................................................................... 437
Chapter 10RCC Design ...........................................515
1. Working Stress & Limit State Method ........................ 515
2. Shear, Torsion, Bond, Anchorage and
Development Length ....................................................... 524
3. Footing, Columns, Beams and Slabs........................... 527
4. Miscellaneous ..................................................................... 541
Chapter 11Steel Design .........................................592
1. Structural Fasteners .......................................................... 592
2. Tension, Compression and Flexural Member .......... 597
3. Plate Girders and Industrial Roofs ............................... 604
4. Miscellaneous ..................................................................... 605
Chapter 8Environmental Engineering................384
1. Water Demand and Population Projection .............. 384
2. Quality Control of Water Supply and
Water Treatment ................................................................ 385
3. Design of Sewer, Quality and Characteristics
of Sewage ............................................................................. 388
4. Treatment and Disposing of Sewage ......................... 389
5. Air and Sound Pollution .................................................. 391
Chapter 9Theory of Structures ............................408
1. Properties of Metals, Stress & Strain ........................... 408
2. Shear Force and Bending Moment ............................. 416
3. Principal Stress and Principal Strain ........................... 421
4. Bending and Shear Stresses .......................................... 423
5. Deflection of Beams ......................................................... 428
6. Torsion of Shafts and Pressure Vessels ....................... 431
nnnn