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B.Tech. DEGREE EXAMINATION, MAY - 2013

(Examination at the end of Second Year)

Civil Engineering

(Paper - II) : BUILDING MATERIALS AND CONSTRUCTION

Time : 03 Hours Maximum Marks : 75

Answer Question No. 1 compulsory. (15 � 1 = 15) Answer ONE question from Each Unit. (4 � 15 = 60)

Q1) a) What are the qualities of good building stone?b) What are the characteristics of good bricks?c) Define Calcination.d) Mention reasons for decay of timber.e) Define Ingot.f) Differentiate between painting and varnishing.g) What is sound insulation?h) What is the difference between superstructure and substructure of a building?i) What is efflorescence?j) Define quarry sap.k) Give the classification of load bearing walls.l) What are the causes of dampness?m) Define underpinning.n) Draw the neat sketch of collar beam roof.o) Define floor space index.

UNIT - I

Q2) a) Explain process of blasting.b) Explain properties of fat lime and hydraulic lime.

ORc) What are the qualities of good bricks.d) Explain the tests for bricks.

UNIT - II

Q3) a) What are the common uses of timber in building industry?b) Enumerate the characteristics of good timber.

OR

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c) Write properties of mild steel and hard steel.d) What are the factors to be considered in acoustics of building.

UNIT - III

Q4) a) Write types of foundation and explain.b) What are the type of bonds in brick work and explain.

ORc) Define stone masonry and explain its classification.d) Write a note on types of walls.

UNIT - IV

Q5) a) How do you present dampness.b) What are the types of ground floors and how to repair of floors.

ORc) Explain classification of roofs.d) What are the methods of underpinning & explain in detail.

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B.Tech. DEGREE EXAMINATION, MAY - 2013(Examination at the end of Second Year)

CIVIL ENGINEERING(Paper - III) : Surveying - I


Answer Question No. 1 compulsory. (15 � 1 = 15)Answer ONE question from each unit. (4 � 15 = 60)

All questions carry equal marks.

Q1) a) What are the objectives of surveying?b) Enumerate the uses of surveying.c) Write any two sources of errors.d) What is meant by accuracy and precision?e) List out any two instruments used for setting right angles.f) Define the term true meridian.g) Define the term Azimutus.h) What is the purpose of using the optical square in chain surveying?i) What is meant by compass surveying?j) Define the term Dipangle.k) What do you understand by local attraction?l) What are the different methods of orientation?m) Define the term line of Collimation.n) Write any two uses of contours.o) Write any two important permanent adjustments of a dumpy level.

UNIT - IQ2) a) Distinguish between plane and geodetic surveying.

b) Explain the concept of weight and its use in surveying. What is the most probablevalue of a quantity.

OR

Q3) a) What is hypotenusal allowance? Derive a formula for calculating it when the slope isgiven in degrees and in terms of the gradient.

b) A 20mts tape was 0.6% too short. What is the correction per tape length? If the lengthand breadth of a rectangular plot measured with the tape were 100 mts and 40 mts,find the correct area of the plot.

UNIT - II

Q4) a) Describe the different methods of setting out a right angle at a point on a chain lineusing a chain/tape only.

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b) What is the limiting length of the offset if it is measured to a linear precision of 1in 100and is plotted to a scale of 1:5000? Assume that the displacement on paper does notexceed 1/4 mm.

ORQ5) The following magnetic bearings were taken in a traverse. Find the true bearings of the

survey lines if the magnetic declination was 9 30 E′�

Line Fore bearing Back bearingAB 65º 15' 229º 00'BC 120º 45' 314º 00'CD 210º 30' 40º 30'DA 306º 45' 126º 45'

UNIT - III

Q6) a) Describe briefly the method of conducting the survey of an area, explaining the stepsinvolved.

b) Describe briefly the different types of variations in declination.OR

Q7) a) Explain the advantages and disadvantages of the different methods of plane tablesurveying.

b) Enumerate the various methods of plane tabling? Discuss the methods of radiationand intersection in detail.

UNIT - IV

Q8) a) Explain the height of collimation method of reduction of levels.b) Explain the operational errors possible inlevelling and the precautions that should be

taken to prevent them.

OR

Q9) In running fly levels from a benchmark of RL150.600; the following readings were obtained.Back sight 1.530, 2.610, 1.415, 2.910. Fore sight 0.625, 1.140 , 0.510. From the last positionof the instrument; six pegs at 30m intervals are to be set out on a uniform rising gradient of1 in 60. The first peg must have a reduced level of 135.000. Workout the staff readingsrequired to set the tops of the pegs on the given gradient.

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CIVIL ENGINEERING(Paper - IV) : Strength of Materials - I



Q1) a) What do you mean by stress and strain?b) What do you mean by principle of super position?c) State Hooke’s law.d) How do you find the thermal stress in bars of varying section?e) How do you find the maximum bending moment in a beam?f) Define effective span of the beam.g) When hogging bending moment occurs in case of beams.h) Write the relation between SF and BM at any section of a beam.i) What is the difference between bending stress and direct stress?j) What is flitched beam?k) Define shear centre.l) Write the relation to find out the shear stress at any section.m) Define the term pure torsion.n) Write the basic torsional equation.o) Define helical spring.

UNIT - I

Q2) a) Deduce a formula for the elongation of a prismatical bar under the action of its ownweight. (5)

b) Three equal vertical rods 45mm diameter each jointly supported a load of 1600 kN.The middle rod is made of steel and the end rods are made of copper. Each rod is 3mlong and the rods are such spaced that each rod shares equal amount of load. Now anadditional load of 1600 kN is attached to the rods through a plat form attached at thebottom of the rods.

Determine the final stress set up in each rod. Take E for steel as 200 kN/mm2 and E forcopper as 100 kN/mm2. (10)

OR

Q3) A steel bolt 12mm in diameter passes through a copper tube of 20 mm internal diameter, 250mm long and 2.5 mm thick. The bolt is fightened by a nut at 10ºC so as to exert a compressiveforce of 15kN on the tube. Calculate the stress in bolt and tube

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a) at 10ºC and

b) when the temperature of the tube and bolt is raised to 60ºC. Take Es = 200 kN/mm2,

Ecu

= 120 kN/mm2, -6 os �� / , -6 o

cu �� / .

UNIT - II

Q4) A simply supported beam AB of span 10m carries a VDL of 25 N per metre over 3 metresfrom left hand support and also over 4 m from the right hand support. It has also two isolatedloads of 25N and 65N at 3 m and 8m respectively from the left hand support. Draw the B.Mand S.F diagrams and calculate the B.M at significant points.

ORQ5) A simply supported beam carries distributed load varying uniformly from 180 N/m at one

end to 290 N/m at the other. Draw the SF and BM diagrams and determine the maximumB.M.

UNIT - III

Q6) A timber beam 300 mm wide and 260 mm deep is strengthened by a steel plate 15 mm thickand 150 mm wide at the top and bottom placed symmetrically. Calculate the M.R. of thebeam if allowable stress in timber and steel 7N/mm2 and 105 N/mm2. Take E

s = 20 E

t.

ORQ7) A steel box section 400 mm x 300 mm having thickness 10mm on all sides is loaded with a

point load of 60 kN at the centre of the span of 6 mts. Find the maximum bending stress andshear stress developed in the section.

UNIT - IV

Q8) A specimen 35mm in diameter and 280mm in length was subjected to tensile and torsiontest. It was found that a tensile load 100 kN produced an elongation of 0.60mm and a torqueof 185kN-mm produced a twist of 1.5. Determine.a) Young’s modulusb) Rigidity modulus.c) Poisson’s ratio.d) Bulk modulus.

OR

Q9) A weight of 350N is dropped through a height of 800 mm on to a closely coiled compressionspring which is instantaneously compressed by 200 mm under the impact. If the diameter ofthe rod with which the spring is made is 25 mm and the mean coil radius of the spring is100 mm, find the maximum instantaneous stress produced by the impact and the number ofcoils in the spring. Take G = 80 x 106 N/mm2.

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CIVIL ENGINEERING(Paper - VI) : Engineering Geology



Q1) a) Define geology.b) What are the advances in geology?c) What are geological agents?d) Define crystal.e) Define the term Rock.f) What is the difference between Concordant and discordant?g) How the sedimentary rocks are formed?h) What is meant by poly metamorphism?i) Define strike and dip.j) When folds occurs in geological structure?k) Define hypocentre in case of earthquake.l) How we can view landslides?m) List out the branches of geophysics.n) Write any two principal uses of dams.o) Write any two purposes of tunnelling.

UNIT - I

Q2) Describe the factors on which rate of rock weather depends. Also discuss the importance ofweathering in civil engineering.

OR

Q3) Describe:

a) Pseudomorphism of minerals and ��

b) Uni axial and biaxial minerals. ��

UNIT - II

Q4) a) Explain in detail the salient features of rocks in terms of their occurrence, formation.��

b) Write a brief note on the importance of petrology for civil engineering point of view.��

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ORQ5) What are igneous rocks? How are they classified? Describe a rock type in each group.

UNIT - III

Q6) Describe with neat sketch the different parts of a normal fault. Write a detail note on therecognition of faults in the field.

ORQ7) What are landslides? Explain with a help of neat sketches the probable causes of land slides.

UNIT - IV

Q8) Explain briefly the classification of geophysical methods with a help of neat sketches.

OR

Q9) What pre cautionary measures are adopted during safe tunneling? Add a note on methanegas problems encountered in tunnels.

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CIVIL ENGINEERING(Paper - I) : Concrete Technology



Q1) a) What is heat of hydration?b) List out any four types of cements.c) How are aggregates classified?d) Give the practical range of fireness modulus values for Coarse and fire aggregates.e) What happens when Carbonates and bi-carbonates of sodium and potassium increases

in cement?f) Why seawater is not advisable for plastering purpose?g) How workability is measured in case of cement motar.h) Define plasticizers.i) Define water cement ratio.j) What is the main principle of mix proportion.k) Define maturity of concrete.l) What is the importance of impact strength of concrete?m) List out the various methods of producing light weight aggregate artificially.n) How creep is measurement in concrete?o) What is No-fines concrete?

UNIT - I

Q2) a) Describe the role played by gypsum in the hydration reaction of cement. 1(7 )2

b) What are the important chemical tests conducted on cement to determine its quality?1(7 )2

OR

Q3) a) What are the effects of the shape and texture of aggregates on the strength and

workability of concrete? 1(7 )2

b) What are the different moisture states in which aggregates exit? 1(7 )2

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UNIT - II

Q4) a) Explain, why do superplasticizers perform better than surface - active agents. 1(7 )2

b) What are the different chemicals used to obtain the desired colours on a concrete

surface. 1(7 )2

OR

Q5) a) Compare the relative merits and demerits of various workability tests. 1(7 )2

b) Discuss the various factor affecting the workability of concrete. 1(7 )2

UNIT - III

Q6) a) State Abram’s w/c ratio law and explain the same. How do feret improved Abram’s

law. 1(7 )2

b) Define the term Gel/Space ratio and explain its relation with strength of concrete.1(7 )2

ORQ7) a) Explain in detail how the flexural strength of concrete is determined with a neat sketch.

1(7 )2

b) Explain how guide of concrete affects the flexural strength of concrete. 1(7 )2

UNIT - IV

Q8) a) Explain durability of concrete and emphasize various specifications suggested by

relevant code. 1(7 )2

b) Explain the ‘permeability’ of concrete and its influence on the strength of concrete.1(7 )2

OR

Q9) a) Discuss is detail about the classification of various natural and artificial light weight

aggregates. 1(7 )2

b) Write about the physical and mechanical characteristics of light weight aggregates.1(7 )2

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Total No. of Questions : 6] [Total No. of Pages : 02



Civil Engineering

(Paper - II) : BUILDING DRAWING


UNIT - I

Q1) a) Explain Grouping, circulation, orientation and privacy.

b) Explain roominess, flexibility, sanitation and ventilation.

OR

Q2) a) Write a note on building regulations.

b) Explain plinth, floor, carpet area and floorspace Index.

UNIT - II

Q3) a) Draw line diagram for residential building with detailed specifications.

b) Draw line diagram of hospital building with specifications.

OR

Q4) a) Draw the conventional signs for

i) Stone masonry

ii) Timber

iii) Rock

iv) Slope in embankment

v) 3-pin socket

b) Give neat and fully dimensioned sketches of elevation, section and plan of a fullypanelled door of 1200 mm × 2000 mm.

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UNIT - IIIQ5) The line diagram of a residential building is shown in fig.

Foundation : 300 mm thick C.C. 1 : 2 : 4 and 600 wide.Basement : Brickwork in c.m. 1 : 6 300 mm wide and 450 mm above ground level.Super structure : all walls are 300 mm thick are of brick in c.m. 1 : 6.Height of ceiling above floor level is 3000 mm.Roof : 150 mm thick R.C.C. slab.Parapet wall 100 mm thick should be to a height of 1000 mm above the roof.Flooring : 20 mm thick c.m. 1 : 3 over plain cement concrete layer of 1 : 3 : 6, 100 mm thick.

D - PANELLED DOOR - 900 × 1950D1 - PANELLED DOOR - 800 × 1950W - PANELLED WINDOW - 1200 × 1000V - GLAZED VENTILATOR - 800 × 600All dimensions are in mm.Draw (a) dimensioned PLAN

(b) Section along A.A(c) Front - elevation.

ORQ6) Design a residential building for the following data:

i) The site having dimensions of 12 m × 18 m and 9 m wide road is on the northern sideof the plot.

ii) The total plinth area shall not exceed 90 sq.m.iii) The building shall have the following accommodation.

a) Entrance verandahb) Living roomc) Bed room with toiletd) Dining roome) Kitchen with store attached.

Provision for extra bath and W.C. may be included. Out side stair case provision is to beshown for future expansion. Dimensions of rooms and other specifications may be assumed.Give the detailed specifications provided in the building.

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CIVIL ENGINEERING(Paper - V) : Hydraulics & Hydraulic Machines


All questions carry equal marks Answer Question No. 1 and any Four questions (5 � 3 = 15)

Answer ONE question from each unit (4 � 15 = 60)

Q1) a) Give the conditions to be fulfilled by a circular section to get the maximum discharge.b) What is a surge? Give the classification of surges briefly.c) How is back water curve formed?d) Write the functions of draft tube.e) Enumerate the losses which occur when a centrifugal pump operates.

UNIT - 1Q2) a) What do you understand by most economical section? How will you find such a

section for a rectangular section? (8)b) The rate of flow of water through a circular channel of diameter 60 cm is 150 litres/

sec. Find the slope of the bed of the channel for maximum velocity. (7)

ORQ3) a) Explain the energy variation in a short hydraulic jump using the specific energy equation.

(8)b) A uniform flow of 9m3/s occurs at a depth of 1.5m in a long rectangular channel 3m

wide. Compute the minimum height of a flat top hump that can be built on the channelfloor in order to produce a critical depth. (7)

UNIT - 2

Q4) a) Distinguish between a back water curve and a draw down curve. (7)b) A trapezoidal channel having bottom width 8m and side 1:1 carries a discharge of 80

cumecs. Find the depth conjugate to initial depth of 0.75m before the jump. Alsodetermine the loss of energy in the jump. (8)

ORQ5) a) What is a surge? Distinguish between a positive surge and a negative surge. (7)

b) The depth of flow of water at a certain section of a rectangular channel of 2m wide is0.3m. The discharge through a channel is 1.5m3/sec. Determine where a hydraulicjump will occur, if so, find its height and loss of energy per kg of water. (8)

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UNIT - 3

Q6) a) Show that the force exerted by a jet on a moving curved vane is greater than that on amoving flat plate. (8)

b) A metal plate of 10mm thickness and 200mm square is hung so that it can swingfreely about the upper horizontal edge. A horizontal jet of water of 20 mm diameterimpinges with its axis perpendicular and 50 mm below the edge of the hinge, andkeeps it steadily inclined at 30º to the vertical. Find the velocity of the jet if specificweight of the metal is 75.54 kN/m3. (7)

ORQ7) a) What do you understand by governing of hydraulic turbines? Explain with sketches

the working of an oil pressure governor. (8)

b) Determine the efficiency of a Kaplan turbine developing 3000kW under a net head of5m. It is provided with a draft tube with its inlet (diameter 3m) set 1.6 m above the tailrace level. A vacuum gage connected to the draft tube indicates a reading of 5m ofwater. Assume draft tube efficiency as 78%. (7)

UNIT - 4

Q8) a) Obtain an expression for the workdone by the impeller of a centrifugal pump on waterper second per unit weight of water. (8)

b) A single stage centrifugal pump with impeller diameter of 30 cm rotates at 2000 rpmand lifts 3m3 of water per second to a height of 30m with an efficiency of 75%. Findthe number of stages and diameter of each impeller of a similar multi-stage pump to lift5m3 of water per second to a height of 200 meters when rotating at 1500 rpm. (7)

OR

Q9) a) Using Buckingham’s method obtain the dimensionless parameter from the followingvariables; shear stress at the wall, boundary layer thickness, length of the flat plate,velocity, viscosity and mass density. (8)

b) A geometrically similar model of scale 1:10 is built to study wave motion on a beach.Determine the scale ratios for velocity, time, acceleration and force if mass densities inthe prototype and model are 1030 kg/m3 and 1000 kg/m3. (7)

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Total No. of Questions : 10] [Total No. of Pages : 02



Civil Engineering

(Paper - VI) : FUNDAMENTALS OF ELECTRICAL SCIENCE &MECHANICAL SCIENCE


Answer Question No. 1 compulsory.

Answer ONE question from each unit.

PART - A(Electrical Sciences)

Q1) Answer all the questions :

a) Define voltage and current.

b) State Faroday’s Laws.

c) List the various types of DC motors.

d) What is Mutual Induction?

e) Define the term synchronous speed.

f) Distinguish between a Conductor and Insulator.

g) Give the applications of 1- Induction motor.

UNIT - I

Q2) Draw the circuit diagram of a full-wave rectifier. Explain its working and derive expressionsfor ripple factor and also efficiency.

OR

Q3) Describe the principle of operation of DC generator in detail.

UNIT - II

Q4) Explain about the constructional aspects of an AC Generator.

OR

Q5) Explain the principle of operation of 3- Induction Motor.

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PART - B(Mechanical Sciences)

Q6) Answer all the questions.

a) Define the term creep.

b) What is meant by casting?

c) Give the applications of boilers.

d) Define the ratio of tensions.

e) What is a Gas turbine?

f) Give the applications of a compressor.

g) Define the Carnot’s cycle.

UNIT - III

Q7) Explain the principle of welding and soldering used in the field of manufacturing industry.

OR

Q8) Explain in detail the various aspects of power transmission occuring in a basic mechanicalsystem.

UNIT - IV

Q9) Discuss in detail the principle of operation of a steam turbine.

OR

Q10) Explain the operation of multi-stage reciprocating air compressors.

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Answer Question No : 1 Compulsory

Answer One question from each unit

Q1) Write briefly on

a) Waangari Maathaz

b) Renewable energy sources

c) Ecological Pyramids

d) Salt Water Intrusion

e) Endangered and Endemic species of India

f) In-situ & ex-situ conservation of biodiversor

g) Bhopal gas tragedy

h) Green House Effect

i) Environment protection Act ; 1986

j) e-waste management

k) Methods of disposal of refuse

l) Rain Water harvesting

m) Water borne diseases

n) Vermicomposting

o) Primary air pollutants

Unit-I

Q2) “Technology owes ecology an apology”. Discuss

OR

Q3) a) What are the impacts and control of urbanisation deforestation and desertification?

b) What are the impacts of exploritation of resources with examples.

N-3023

Total No. of Questions : 09] [Total No. of Pages : 02B.Tech. DEGREE EXAMINATION, MAY - 2013

(Examination at the end of Second Year)Civil Engineering

(Paper - VII) : ENVIRONMENTAL SCIENCETime : 03 Hours Maximum Marks : 75

P.T.O.

��Unit-II

Q4) a) Describe how a pond, a marine, a river and an estuarine ecosystem differ with respectto their structure and function?

b) Explain the terms-food chains, food web and energy pyramids with examples andfigures.

Explain their significance in an ecosystem.

OR

Q5) a) What is the significance of biodiversity. How do you protect it?

b) Describe various sustainable life styles are should adopt for a sustainable development.

Unit-III

Q6) Discuss in detail, the sources, effects and methods of control of solid waste, waterpollution, thermal pollution and nuclear pollution.

OR

Q7) What is climate change? Discuss briefly the sources, effects and methods of control of

i) Green House Effect

ii) Ozone Holes

iii) Acid Rains

iv) Heat Island effect

Unit-IV

Q8) Write short notes on

a) Role of Information Technology in Environment and human health

b) HIV prevention and control

OR

Q9) Assuming you have visited an Agency area with mountains, forests and streams or lakes tostudy an Eco-Tourism project as a part of your field work, give a detailed report on yourvisit to the DFO.

��N-3023 -2-

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