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Civil Engineering Questions and Answers Part 4

Q1 The split tensile strength of M 15 grade concrete when expressed percentage of its compressive strength is 
option 
1) 10 to 20 % 
2)15 to 20 % 
3) 20 to 25 % 
4) 25 to 30 %

Q2 The approximate ratio between the strength of cement concrete at 7 days and at 28 days is 
option
1)3/4
2)2/3
3)1/2
4)1/3

Q3 Modulus of elasticity of M25 concrete as determined by formula of IS :456 is 
option
1) 124500 MPa
2) 90125 MPa
3) 28500 MPa 
4) 16667 MPa 

Q4 General shrinkage in cement concrete is caused by 
option
1)carbonation 
2) stressed due to external load 
3)drying with starting with a stiff  consistency 
4) drying with starting with a wetter consistency 

Q5 The optimum number of revolution over which concrete is to be mixed in a mixer machine is 
option 
1)10
2)20
3)50
4)100

Q6 As per IS code of practice ,concrete should be cured at 
option 
1)5 ℃
2)10 
3) 27 
4) 40 

Q7 The ratio of direct tensile strength to that of modulus of rupture of concrete is 
option
1) .25
2).5
3).75
4)1.0

Q8 Which one of the following aggregate gives maximum strength in concrete ?
option
1)Rounded aggregate 
2) Elongated aggregate 
3) Flakey aggregate 
4) Cubical 

Q9 Which of the following types concrete is most suitable in extreme cold climates 
option
1)Air- entrained concrete 
2) Ready mix concrete 
3) vacuum concrete 
4) coarse concrete 

Q10 What is the range of fineness modulus of sand which is least suitable for making a good concrete 
option 
1) 3.5- 4.5
2) 2.9 - 3.2
3) 2.6 -2.9
4) 2.2 -2.6



answer
1)15 to 20 % 
2)2/3
3)28500 MPa 
4)drying with starting with a wetter consistency 
5)20
6) 27 
7).5
8)Cubical 
9)Air- entrained concrete 
10) 3.5- 4.5

Civil Engineering Interview Questions

Q1 . What is civil engineering ? 

Q2  What is work of a civil engineer ? 

Q3  Define various authorities on a construction site ?

Q4  What is least cover provide for different Rcc members?

Q5  What is function of column in a building ?

Q6  What is cement sand and aggregate ratio in various concrete mix?

Q7  What do mean by honeycomb in concrete ?

Q8  Will water damage concrete  ?

Q9  What is initial and final setting time of ideal mix concrete ?

Q10 What are the common method  of curing ?

Q11 Write the formula for the weight of steel ?

Q12 What do you know about TMT ? 

Q13 What is difference between working stress method and limit state method ?

Q14 Name the field test required for quality check of cement ? 

Q15 Name the types of foundation used in construction ?

Q16 Name the various types of cement 

Q 17 What do you understand by guniting ?

Q18 What are the various test for bricks ?

Q19 what do you under stand by void ratio ?

Q20 what is workabiity how to test it ? 

Civil Engineering Questions and Answers Part 3

Q1 . If 'p' is the standard consistency of cement ,the amount of the water used in conducting the initial setting time test on cement is :
option 
1) .65 p
2) .85p
3) .6p
4).8p 

Q2 . Gypsum is used as an admixture in cement grouts for 
option
1)accelerating the setting time 
2)retarding the setting time 
3)increasing the plasticity
4)reducing the grout shrinkage

Q3.Before testing setting time of cement one should test for 
option 
1) soundness
2)strength
3)fineness
4)consistency

Q4 The fineness of cement is tested by 
option 
1) air-content method 
2) air-permeability  method  
3) Le -chatelier apparatus
4)Vicat's apparatus

Q5 For marine works ,the best suited cement is 
option
1)low heat portland cement 
2)rapid hardening cement 
3)ordinary portland cement 
4)blast furnace slag cement

Q6 Ultimate strength of cement is influenced by which one of the following ?
option
1)Tricalcium silicate 
2)Dicalcium silicate 
3)Tricalcium aluminate 
4)Tetracalcium alumino-ferrite

Q7 The specific gravity of commonly available ordinary portland cement is 
option 
1)4.92
2)3.15
3)2.05
4)1.83

Q8 A quick -setting cement has an initial setting time is about 
option 
1) 50 minutes 
2)40 minutes
3)15 minutes
4)5 minutes

Q9 In cements ,generally the increase in strength during a period of 14 days to 28 days is primarily due to
option 
1)C3A
2)C2S
3)C3S
4)C4AF

Q10 Soundness test of cement is carried out of determine its
option
1)alumina content
2)iron oxide content 
3)free lime content 
4) durability under sea water

Answer
1 .85p
retarding the setting time 
consistency
4 air-permeability  method
blast furnace slag cement
Dicalcium silicate 
7 3.15
8 5 minutes
C3S
1o free lime content

Local Attraction

Local attraction is the attraction of magnetic needle to a local magnetic field other than earth's magnetic field.
It is caused by any iron material in the vicinity of compass station .Example Steel vehicle ,iron pipes , Transmission lines ,iron ore, arrow etc.
Under the influence of local magnetic field ,magnetic needle will deviate from magnetic meridian which results in wrong magnetic bearing of Traverse line. 
To determine local attraction it is mandatory to take fore bearing and back bearing of each traverse line . 
If difference between fore bearing and back bearing is not equal to 180▪️ then local attraction can be at ;
Either of the station ( station A or B ) 
Both the station ( station A and B both) 
If difference between Fore Bearing and Back Bearing Exactly differs by 180▪️  then we assume that both the station ,i.e. A and B are Free from Local attraction .

Correction For Local Attraction  
Method 1 :Correction For L.A at each station
In this method L.A.  at each station is found out and then required correction is applied to the observed bearings . 
Steps :
1 . Observe a line whose FB and BB exactly differs by 180▪️  
2. End station of such line are free from L.A.  and  all the bearings observed from such stations are free from L.A.
3. With the help of correct bearing of any line and correction for local attraction correct Fore bearing of next line can be determined .
4.  This methods is suitable for open traverse .
5. This method will fail for closed traverse when instrument errors are present ,i.e. theoretical sum is not matching with actual sum .

Method 2  :By Included angles
This method is suitable for closed traverse to find out correct bearings . As all the bearings taken at a station are affected equally and in same direction ,therefore is no effect of local attraction on included angles
Steps :
Locate a line whose FB and BB differ exactly by 180▪️ 
Determine included Angles.
With the help of correct bearing of any line and included angles, we can determine bearing of all the other lines .




Civil Engineering Questions and Answers Part 2

 Q1 In geodetic surveying, sum of angles (degree) of a spherical triangle should not be greater than Options
 1)  180
2)  270
 3)  360
 4)  540
 Correct Answer:/>540

Q2 Calculate the number of division of the main scale that is equal to the 8 divisions of the extended vernier.  Options:
 1)  7
 2)  9
 3)  15
 4)  16
 Correct Answer: 15

 Q3  An area of a field is 250 square centimetres from a shrunk map having shrunk factor of 0.9. Calculate the original area (square metres) on the field, if the original scale of the map is 1 cm = 50 m.  Options:
1)  309
  2)  625000
 3)  694444
  4)  771450
Correct Answer: 771450

Q4  The length of the chain is equal to _____. Options:
 1)  centre to centre distance between the last end of links
 2)  Sum of reduced level of benchmark and foresight
 3)  Sum of reduced level of benchmark and backsight
 4)  Sum of reduced level of benchmark and intermediate sight
Correct Answer: centre to centre distance between the last end of links

Q5  Calculate the error (mm) in the linear measurement of offset, if the length of the offset is 80 m, then the accuracy in the measurement of the length is 1 cm in 60 m.
Options:
 1)  0.075
2)  1.33
 3)  7.5
  4)  13.3
Correct Answer: 13.3 

 Q6  What should be the height (m) of a lighthouse, so that it can be visible from a distance of 3 km?  Options:
 1)  0.101
 2)  0.605
 3)  0.673
 4)  0.707
  Correct Answer: 0.605 

 Q7 - Calculate the apex distance, if the deflection angle is 60 degree and the degree of curve is 8 degree.
Options:
 1)  33.26
 2)  124.13
  3)  215
4)  262.8
 Correct Answer: 33.26  

Q8 Which of the following contour represents either hills or ponds?
 Options:
 1)  Contour having concentric circles
 2)  Closely placed contour
3)  Distant contour
 4)  Parallel contour
Correct Answer: Contour having concentric circles 

Q9 Which of the soil possesses zero plasticity index?
Options:
1)  Clay
 2)  Clayey silt
 3)  Sand
4)  Silty
 Correct Answer: Sand 

Q10  Which of the following roller is used to compact the coarse-grained soil?
 Options:
 1)  Drum roller
2)  Pneumatic tyred roller
 3)  Tamping roller
 4)  Vibratory roller
 Correct Answer: Vibratory roller

Q 11  The internal angle of friction of a soil is 30 degree. What is the active earth pressure coefficient for the soil mass?
 Options:
 1)  0.005
 2)  0.025
 3)  0.333
4)  0.555
Correct Answer: 0.333  

Q12  Which of the following is measured in the poise?
Options: 1)  Dynamic viscosity
2)  Kinematic viscosity
 3)  Velocity of flow
 4)  Discharge
 Correct Answer: Dynamic viscosity

Q13  Which of the following is measured with the help of hot wire anemometer?
 Options:
 1)  Velocity coefficient
 2)  Surface tension
 3)  Viscosity
4)  Velocity of fluid
 Correct Answer: Velocity of fluid 

Q14  A sphere of diameter 30 cm is moving with a uniform velocity of 4 m/s. The dynamic viscosity and specific gravity of the liquid is given as 0.8 poises and 0.9 respectively. What is the value of Reynolds number?
 Options:
1)  135
 2)  10000
3)  13500
4)  15000
Correct Answer: 13500  

Q15  The sphere of diameter 0.02 m falls in a fluid of kinematic viscosity of 10 stokes with the terminal velocity of 0.02 m/s. What is the value of the coefficient of drag on the falling sphere?
Options:
1)  40
 2)  60
 3)  80
  4)  100
Correct Answer: 60

 Q16  What is the depth of the flow (m) in a circular channel of diameter 2.0 m for the maximum velocity?
Options:
1)  1
2)  1.62
 3)  2
 4)  2.83
Correct Answer: 1.62 

Q17 The water flows fully through the rectangular channel of lateral dimensions 4 m x 3 m. What is the velocity of flow (m/s) through the channel, if the slope of energy line and Chezy’s constant is given as 0.0006 and 90 respectively?
Options:
 1)  1.5
2)  2.4
3)  4.6
4)  5
Correct Answer: 2.4

Q18  Which of the following is the dimensionless parameter?
Options:
 1)  Linear velocity
 2)  Gravity force
3)  Reynolds number
4)  Viscosity
 Correct Answer: Reynolds number

Q 19  Which ONE is the best method of the reclamation of the acidic soil?
 Options:
1)  Leaching
 2)  Provision of good drainage
 3)  Use gypsum as a soil amendment
4)  Use limestone as a soil amendment
 Correct Answer: Use limestone as a soil amendment 

Q20  Calculate the evaporation (mm) from a pond, if the pan evaporation is 45 mm. The pan coefficient is 0.70.
 Options:
 1)  13.5
 2)  19.28
  3)  31.5
4)  64.28
Correct Answer: 31.5 

 Q21  The ruling design speed on a curve is 100 km/h and the super elevation on the curve is 7%. Calculate the ruling design radius (m) of the curve. Take coefficient of the lateral friction as 0.15
 Options:
 1)  129
 2)  189
  3)  358
 4)  1668
 Correct Answer: 358  

Q22  Which of the following is the CORRECT order for increasing width of a railway gauge?   Options: 1)  Broad gauge < light gauge < narrow gauge < metre gauge
2)  Broad gauge < metre gauge < light gauge < narrow gauge
3)  Light gauge < narrow gauge < metre gauge < broad gauge
4)  Narrow gauge < light gauge < broad gauge < metre gauge
Correct Answer: Light gauge < narrow gauge < metre gauge < broad gauge

Q23 Which of the following method is used to forecast the population of old and very large city?
 Options:
 1)  Arithmetical increase method
2)  Geometric progression method
3)  Graphical method
 4)  Logistic curve method
 Correct Answer: Arithmetical increase method


Q24 The strength of a riveted lap joint is equal to its A. shearing strength B. bearing strength C. tearing strength
 Options:
1)  Only A
 2)  Only B
 3)  Only C
 4)  Least of A, B and C
Correct Answer: Least of A, B and C 

 Q25  Maximum permissible slenderness ratio of compressive members which carry dead and superimposed load is
Options:
 1)  350
2)  250
3)  180
4)  80
Correct Answer: 180

Q26  When plates are exposed to weather, tacking rivets are provided at a pitch in line not exceeding
 Options:
1)  8 t
2)  16 t
3)  24 t
 4)  32 t
 Correct Answer: 16 t 

 Q28  In double lacing, the thickness 't' of flat lacing is
Options:
1)  t is less than 1/40th length between inner end rivets t
2)  t is less than 1/50th length between inner end rivets t
3)  t is less than 1/60th length between inner end rivets t
4)  t is less than 1/70th length between inner end rivets t
 Correct Answer: t is less than 1/60th length between inner end rivets t 

Q29  Column footing is provided
Options:
1)  to spread the column load over a larger area
2)  to ensure that intensity of bearing pressure between the column footing and soil does not exceed permissible bearing capacity of the soil
3)  to distribute the column load over soil through the column footing
4)  All option are correct
 Correct Answer: All option are correct 

Q30  In a truss girder of a bridge, a diagonal consists of mild steel flat 400 I.S.F. and carries a pull of 80 tones. If the gross diameter of the rivet is 26 mm, the number of rivets required in the splice is
Options:
1)  6
2)  7
3)  8
4)  9
Correct Answer: 8 




civil engineering objective question answer

Which of the following statement is CORRECT about the rocks and mineral
Options:
1) Shale and mica are metamorphic rocks.
2) Quartz is igneous rock.
3) Quartz is metamorphic rock.
4) Quartz and mica are only minerals
Correct Answer: Quartz and mica are only minerals

Which of the following possess more ability to resist fire?
Options:
1) Compact sandstone
2) Quartz
3) Red marble
4) Shale
Correct Answer: Compact sandstone

The strength of any timber is highest in direction of _____
Options:
1) an angle of 60 degree to grains
2) an angle of 0 degree to grains
3) an angle of 90 degree to grains
4) an angle of 120 degree to grains
Correct Answer: an angle of 0 degree to grains

Which of the following represents the average life (years) of the high durable timber?
Options:
1) Less than 3
2) 3 to 6
3) 6 to 10
4) More than 10
Correct Answer: More than 10

Which of the following is the most important characteristic of the alumina in the brick earth
Options:
1) Maintain plasticity
2) Increase strength of bricks
3) To manufacture impermeable bricks
4) Reduce wrapping when heated
Correct Answer: Maintain plasticity

Which of the following property of ordinary Portland cement is improved by the pozzolana?
Options:
1) Bleeding
2) Heat of hydration
3) Permeability
4) Shrinkage
Correct Answer: Permeability

Which of the following quantity is measured using a Planimeter?
Options:
1) Area
2) Bar diameter
3) Volume
4) Weight
Correct Answer: Area

Which ONE is the best method of the reclamation of the acidic soil?
Options:
1) Leaching
2) Provision of good drainage
3) Use gypsum as a soil amendment
4) Use limestone as a soil amendment
Correct Answer: Use limestone as a soil amendment

Which of the following is the CORRECT order for increasing width of a railway gauge?
Options:
1) Broad gauge < light gauge < narrow gauge < metre gauge
2) Broad gauge < metre gauge < light gauge < narrow gauge
3) Light gauge < narrow gauge < metre gauge < broad gauge
4) Narrow gauge < light gauge < broad gauge < metre gauge
Correct Answer: Light gauge < narrow gauge < metre gauge < broad gauge

Boundary Layer Theory

When a real fluid flows over a solid body ,the fluid particles at the surface of the body flow with the same velocity as that of the surface of the body flow with the same velocity as that of the surface to satisfy no slip condition so the relative velocity of the fluid particles at the surface of the body is zero . 
credit cfdsupport.com
Away from the solid body ,transverse direction the velocity of fluid particle increase gradually thus velocity gradient exist in the region close due to boundary due to velocity gradient viscous stress (て=μdu/dy)  exist in this region this narrow region's known as boundary .
As we move away from the surface there is a development of velocity in the traverse direction 
of the flow therefore slowly viscous shear stress are decreasing and the velocity are increasing and after traveling a distance in transverse direction almost viscous shear stress are closed to zero .And the velocity is almost constant .

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