Exam Details
| Subject | civil engineering | |
| Paper | paper 1 | |
| Exam / Course | ||
| Department | public health | |
| Organization | Haryana Public Service Commission | |
| Position | assistant engineer | |
| Exam Date | 2010 | |
| City, State | haryana, |
Question Paper
DO NOT BREAK THE SEAL UNTIL YOU GO THROUGH THE FOLLOWING INSTRUCTIONS
QUESTION BOOKLET
Name of Post -ASSISTANT ENGINEER (PUBLIC HEALTIl) " Name of Subject -CIVIL ENGINEERING -PAPER
Roll No.. Booklet Series A
IJ
(Enter your Roll number in the above space) Time Allowed: 2 Hour Max. Marks: -200 INSTRUCTIONS:
1.
Use only BLUE/BLACK Ball Point Pen.
2.
All questions are COMPULSORY.
3.
All questions carry equal marks. Each question carries two marks. There will be no negative marking.
4.
Check the BOOKLET thoroughly.
IN CASE OF ANY DEFECT -MISPRINT, MISSING QUESTION/S, GET TIlE BOOKLET s CHANGED. NO COJvlPLAINT SHALL BE ENTERTAINED AFTER THE TEST.
5.
Before you mark the answer, read the instruction on the back page of the OMR sheet (answer sheet) as well as on the question booklet before attempting the questions and fill the particulars in the ANSWER SI-IEET carefully and correctly. Incomplete Incorrect particulars may result in your answer sheet not being evaluated by the Computer.
6.
There arc FIVE options to each question.
7.
After completing the test, handover the ANSWER SHEET to the Invigilator.
8.
For Rough Work, Blank Sheet is provided at the end of the question booklet
9.
Write the BOOKLET SERIES given at the TOP RIGHT HAND SIDE of the question booklet in the space provide in the answer sheet, by darkening the corresponding circles.
C/2010/03 Series P.T.G.
1. If a system of forces Band C are in equilibrium, then magnitude of their resultant is equal to
A2-1-B2
Zero
None of the above
2. The maximum number of unknown forces that can be determined in a concurrent force system under equilibrium is
Zero 2
None of the above
3. The principle of superposition states that the total deflection of a structure under different sets of oads is equal to the sum of deflections under each set ofloads acting separately on the structure if the loads are within,
Elastic limit Limit State
Propoliionality limit without buckling Elastic limit including buckling
None ofthe above
4. The curvature at any point along the curve representing the defolmed shape of a beam is given by
1
R
1
"'.....
None of the above
5. Ifa cantilever beam of span L and flexural rigidity EI carries a moment M concentrated at the free end, the deflection at the end will be,
{fL
6El
None ofthe above
6. IF a cantilever beam of length L and flexural rigidity EI is carrying a concentrated load P at the free end, the total strain energy will be,
None ofthe above
7. A uniform simply suppOlied beam is subjected to a clock-vise moment M at the left end. The moment required at the right end of the beam so that the rotation of the right end is zero is equal to
M/2 (drM/3
None ofthe above
Cj2010j03 1 Series
8.
9.
10.
11.
12.
13.
14.
15.
The fixed end moment MFAB for the beam shown below is
A MB
L/2 U2
Zero MI2
M/4
None ofthe above
The moment required to rotate the near end of a prismatic beam through unit angle, without translation, the far
end being fixed is
EVL 2EI/L
3EI/L
None of the above
The flexibility coefficient for shaft oflength L and torsional rigidity GJ under torsion at mid-point 15
e/6GJ L/2GJ
L/3GJ L/GJ
None of the above
Generally the actions in a grid member are,
Axial force, twisting moment and bending moment Shear force, twisting moment and bending moment
Axial force, shear force and bending moment Shear force and bi-axial bending moment
None of the above
The number of unknowns to be determined in the stiffness method is equal to
Static indeterminacy Kinematic indeterminacy
Sum of static and kinematic indeterminac Maximum ofstatic indeterminacy and kinematic indeterminacy
None ofthe above
The force required to produce a unit translation displacement (without rotation) of one-third point of a fixed beam of span L and of uniform J1cxural rigidity E1 is
729EIl2e 729EIIe
724EIre 724E1l3e
None of the above
The assumption that plane section remains plane under pure bending which is valid for linear elastic material is not exactly true for plastic bending
True False
True ifthe material is nonlinear elastic True if the deformations are continuous
None ofthe above
Which of the following sections will have the maximum shape factor
Square Circular
Diamond Triangle
None oftlle above
Cj2010j03 2 Series
16. The moment capacity of a section at plastic hinge is
Zero Yield moment
Twice of yield moment Fully plastic moment
None of the above
17. The variation of influence line for the stress function in a statically determinate structure is
Linear Parabolic
Circular Rectangular
None of the above
18. The area of the influence line diagram for the fixed end moment of a fixed beam of span L is
e/8 ell2
e/16 L2/24
None of the above
19. A three-hinged parabolic arch is subjected to a uniform load w per unit horizontal length, the maximum bending moment is (al we/4
wL2/12 Zero
None ofthe abovc
=0. The maximum design stress and the area ofthe concrete stress block at Ultimate Limit State of flexure in a singly reinforced rectangular section are
0.447 fck and 0.362 fck and
0.67 fck and 0.87 fck and 0.362fckbxu
None of the above
The concept of locating neutral axis as a centroidal axis (in a reinforced concrete section under flexure) is
True for WSM and not LSM True for both linear and nonlinear material behaviors
True for both elastic and plastic materials True for elastic materials only
None of the above
The minimum flexural reinforcement of Fe 250 steel in the slabs according to IS 456: 2000 is
0.0012 times gross area of concrete 0.85/fy times the gross area of concrete
0.4/(0.87fy) times the gross area of concrete 0.6% of the gross area of concrete
None of the above
The maximum pefll1lssible shear stress III a steel structural member as per IS 800-1984 is
0.6 0.66
0.45 0.75 fy
None ofthe above
The effective length of the compression flange of cantilever beam which is built-in at the support and free at the
end is
L 0.85L
O.5L 2L
None of the above
Cj2010j03 3 Series
25. The maximum slendemess ratio of a member of a steel structure, subjected to compressive forces resulting from
wind/earthquake forces is
180
300
None of the above
26. Granite is an
Igneous rock
Sedimentary rock
None of the above
27. Refractory bricks resist
High temperature
dampness
None of the above
28. Seasoning of timber is done for
Increasing moisture content
Increasingstrength oftimber
None of the above
29. Cast iron is used for
Structural works in beams
Colunms and struts
None of the above
30. Rapid hardening cement contains
Tri-calcium silicate
Tetra-calcium alumll10 ferrite
None of the above
250
350
Metamorphic rock
All the above
Chemical action
all the above
Decreasing moisture content
Decreasing strength of timber
Small sized water pipes
a c
Tri-calcium aluminate
Di-calcium silicate
31. Black cotton soil is unsuitable for foundations because
Its bearing capacity is low
Its Permeability is uncertain
Its Particles are cohesive
It undergoes volumetric changes due to changes in moisture content
None of the above
32. A cavity wall is generally provided for
Heat insulation Sound insulation
Prevention of dampness All the above
None of the above
33. Veep holes are provided in retaining walls and breast walls
To drain ofIthe vater fj"om the filling To ventilate the stone masomy
To reduce the weight of the earth retained To increase the compaction of the earth retained
None of the above
Cj201Oj03 4 Series
34. If all the dimensions of a bar are increased in the proportion 1 the proportion with which the maximum stress produced in the prismatic bar by its own weight, will increase in the ratio
Ln 1
1
None of the above
35. If Z and I are the section modulus and moment of inertia ofthe section, the shear force F and the bending
moment M at a section are related by
F
F =ctM F JM d.t:
.L
rLet'
None ofthe above
36. Simple bending equation is
f ! Y
.... F
"
)·f
None of the above
37. The shear stress at any section ofa shaft is maximum
At the center of the section At a distance r/2 from the center
At the top of the surface At a distance r from the center
None of the above
38. If a solid shaft is subjected to a torque T at its end such that the maximum shear stress does not exceed fs the diameter of the shaft will be
l$T
97
None of the above
39. In a tension test, the yield stress is 30 N/mnl the octahedral shear stress at the point is
N/mnl N/mm2
N/nml N/mm2
None ofthe above
bet
For a channel section the shear center lies at a distance of
II
None of the above
band t are the total depth of the section, width ofthe flange and conunon thickness of flange and web respectively)
Cj2010j03 5 Series
41. For a given material Young's modulus is 200 GN/m2 and modulus of rigidity is 80 GN/m2 The value of Poisson's ratio is
0.15 0.20
0.35 0040
None ofthe above
42. A rectangular log of wood is floating in water with a load of 100 N at its centre. The maximum shear force in the wooden log is
50 N at each end 50 N at the centre
100 N at the centre Zero
None ofthe above
43. The width ofa beam of uniform strength/having a constant depth d and length simply supported at the ends with a central load W is
3fL....
None of the above
44. Beams of uniform strength are prefened to those of uniform section because these are economical for
Large spans Heavy weights
Light weights Short spans
None ofthe above
45. The ratio of the flexural strengths of tviO square beams one placed with its two sides horizontal and the other placed with one diagonal vertical is
-J3
None ofthe above
46. A bar L meter long and having its area of cross section is subjected to a I=,rradually applied tensile load V. The strain energy stored in the bar is
cAZ
None of the above
47. III case ofprincipal axes of a section
Sum of moment ofineliia is zero Difference of moment of inertia is zero
Product of moment of inertia is zero All the above
None of the above
48. The ratio ofmaximum shear stress to average shear stress on a rectangular section is
1 1.25
1.5 2
None of the above
49. The ratio of the maximum deflections of a simply supported beam with central load Wand of a cantilever of same length and vith a load W at its free end, is
1/8 1/10
1/12 1/16
None of the above
50. The equivalent length of a column of length L having one end fixed and the other end free, is
2L L
L/2 L1'h
None of the above
51. Expansion joints are provided if the length of concrete structure exceeds
10m 15 m
(c)35m (d)4Sm
None of the above
52. The aggregate impact value of aggregate used in
Building concrete is less than 45 Road pavement concrete is less than 30
RUllvay concrete is less than 30 All the above
None of the above
53. Workability of concrete may be improved by adding
Fly ash Hydrated lime
Calcium chloride All the above
None of the above
54. Tn a singly reinforced beam, the effective depth is measured from its extreme compression edge to
Tensile edge Tensile reinforcement
Neutral axis ofthe beam Longitudinal central axis
None of the above
55. The anchorage value ofa hook is assumed 16 times the diameter of the bar if the angle of the bend is
30Lj 40J
45 All the above
None of the above
56. The stresses developed in concrete and steel in reinforced concrete beam of 250 mm width and 700 mm effective depth, are 6.25 Ml)a and 25 MPa respectively. Ifm=15, the depth of it neutralaxis is
200 mm 250 mm
300 11m1 400 Illll1
None of the above
57. A column is regarded as a long column ifthe ratio of its effective length and lateral dimension, exceeds
10 12
20 30
None of the above
58. The ratio ofthe diameter ofreintorcing bars and the slab thickness is
Y4 liS
1/6 1/8
None of the above
59. Diagonal tension in beam
Is maximum at neutral axis
Decreases below neutral axis and increases above the neutral axis
Increases below the neutral axis and decreases above the neutral axis
Remains same
None of the above
60. High carbon content in steel causes
Decrease in tensile strength but increase in ductility
Increase in tensile strength but decrease in ductility
Decrease in both tensile strength and ductility
Increase in both tensile strength and ductility
None of the above
61. Prestressing losses in post-tensioned and pre-tensioned beams are respectively
15% and 20% 20% and 15%
15% and 15% 20% and 20%
None of the above
62. At limit state of collapse in shear in case of web-shear cracks, it is assumed that the concrete cracks when the maximum principal tensile stress exceeds a value offt equal to
None of the above
63. Deep beams are designed for
Shear force only Bending moment 0111y
Both shear force and bending moment Bearing
None of the above
64. Design of one-way RC slabs for concentrated load is done by
Using Pigeaud's moment coefficients
Taking slab strip of unit width containing the load
Taking slab strip ofvvidth effective in resisting the load
Taking orthogonal slab strips of unit vidth containing the load
None of the above
65. The final deflection due to all loads including the effects of temperature, creep and shrinkage and measured from the as-cast level of supports, roofs and all other horizontal members should not exceed
Span/350 Span/300
Span/250 Span/200
None of the above
66, The assumption that the plane sections normal before bending remain nom1al after bending is used
Only in working stress method of design
Only in limit state method of design
In both working stress and limit state methods of design
Only in ultimate load method of design
None of the above
C/2010j03 8 Series
67. The state of the two dimensional stresses acting on a concrete lamina consists of a direct tensile stress, U 1.5
x
N/mm2, and shear stress T 1.20N/nun2, whichcauses cracking ofconcrete. Then thetensilestrength ofconcrete in N/mm2, is
1.50 (b)2.08
2.17 2.29
None of the above
68. The following two statements are made with reference to a simply supported under-reinforced RCC beam:
I. Failure takes place by crushing of concrete before the steel has yielded
II. The neutral axis moves up as the load is increased beyond yielding ofsteel
With reference to the above statements, which ofthe following applies?
Both the statements are false 15t is true but 2nd is false
Both the statements are true 1st is false but 2nd is true
None of the above
69. A simply supported prestressed concrete beam is 6 m long and 300 mm wide. Its gross depth is 600 mm. It is prestressed by horizontal cable tendons at a uniform eccentricity of 100 mm. The prestressing tensile force in the cable tendons is 1000 kN. Neglect the self-weight of the beam. The maximum normal compressive stress in the beam at transfer is
Zero 5.55 N/mm2
(c)ll.1l N/nun2 l5.68N/n11ll2
of the above
-0. Which of the following deformations are important in case of deep beams when compared to flexure alone
Shear Axial
Torsional Bearing
None of the above
The losses in prestress in pre-tensioning system are due to
1. Elastic deformation of concrete
Friction
3. Shrinkage and creep of concrete
Select the correct answer llsing the codes, given below:
(a)1,2and3 and3
1 alone 1 and 3
None of the above
The critical section for two-way shear of footing is at the
Face of the colunm Distance d from the column face
Distance tlI2 from the column face Distance 2d from the coluum face
None of the above
(where d is the effective depth of the footing)
.J. A reinforced concrete beam is to be post-tensioned in such a way that no tensile stress develops at the time of
post-tensioning. The distance of the tendon from the nearest face must be:
Between diS and d/4 <d16
Between d/4 and d/3 d/3
None of the above
(where d is the depth ofthe beam)
74. An RC short column with 300 mm x 300 mm square cross section is made ofM20 concrete and has 4 number of 20 mm diameter longitudinal bars ofFe 415 steel. It is under the action of a concentric axial compressive load. Ignoring the reduction in the area of concrete due to steel bars, the ultimate axial load carrying capacity ofthe column is
1659 kN 1548 kN
1198 kN 1069 kN
None of the above
75. For avoiding the limit state of collapse, the safety of RC structures is checked for appropriate load combinations of dead load imposed load or live load wind load and earthquake load Which ofthe following load combinations is NOT considered?
0.9 DL+ 1.5 WL 1.5 DL 1.5 WL
(c)1.5DL+1.5WL+1.5 EL (d)1.2DL 1.2 IL 1.2 WL
None ofthe above
76. If is the width ifplate is the diameter of rivet, then the efficiency of a riveted joint having diamond riveting is given by
D d
b-.ld. b-ld
c,J "
"
None of the above
77. When the effect ofwind or earthquake load is taken into account, the permissible stress as specified in rivets may be increased by
33.33% 50%
10% 25%
None ofthe above
78. A column base is subjected to moment. If the intensity of bearing pressure due to axial load is equal to stress due to moment, then the bearing pressure between the base and the concrete is
UnifoDn compression through out
Zero at one end and compression at other end
Tension at one end and compression at the other end
Uniform tension through out
None of the above
79. If a tension member is subjected to axial load and bending moment, then
1
None of the above
80. Ratio ofplastic section modulus to elastic section modulus for circular section is
14 16
,.. " 1.6
lC)
None ofthe above
Cj2010j03 10 Series
81. The value of the collapse load for a fixed beam ofspan plastic moment 111" subjected to a concentrated load W at the mid-span, will be
L
I.
L
None of the above
82. A cantilever steel beam of 3 m span carries a uniformly distributed load of 20 kN-m (inclusive of self weight). The beam comprises ISLB 200 @198 flange 100 nun x 7.3 mm, web thickness 5.4 mm, Ixx 1696. 6 nm14, Iff 115.4 cm4. Bending and shear stresses in the beam, respectively
530.47N/rnm2 and 55.55 Nlmm2 3899.48 N/rnm2 and 82.19 N/mm2
132.62 N/mm2 and 27.78 N/nm12 1949.74 N/mm2 2nd 41.10 N/mm2
-1.T r
p. ....-F thp h ..... TP
v J ..I. V-l-lv..l..lV .......
83. The problem oflateral buckling can arise only in those steel beams which has
Moment of inertia about the bending axis larger than the other
tvJoment of inel1ia about the bending axis smaller than the other
Fully supported compression flange
Concentric axial force
None of the above
84. For a standard 45° fillet weld, the ratio of fillet to throat thickness IS
1:1 1:12
2:1
None ofthe above
85. For a compression with double angle sectIOn, which of the following section will give larger value ofminimum racllUs of t,ryration?
Equal angles back to back Unequal Jegged angles with long legs back to back
Unequal legged angles with short legs back to back Both or
None of the above
86. Angle of inclination of the lacmg bar with the longitudinal axis ofthe COIUlllil should preferably be between
10° to 30° 30° to 40°
40° to 70° 90°
None of the above
87. Battens provided for a compression member shall be designed to carry a transverse shear equal to
2.5% ofthe axial force in the member ofthe axial force in the member
10% of the axial force in the member of the axial force in the member
None of the above
88. As per IS: 800, for compression flange, the outstand ofi1ange plates should not exceed (a)12t (b)16t
(c)20t (d)25t
None ofthe above
89. The web crippling due to excessive bearing stresses can be avoided by
Increasing the web thickness Providing suitable stiffeners
increasing the length of the bearing plate All the above
none of the above
90. Intermediate veriical stiffeners are provided in plate girders to
eliminate web buckling eliminate local buckling
transfer concentrated loads prevent excessive deflections
None of the above
91. The static theorem of plastic analysis satisfies
Equilibrium and mechanism conditions Equilibrium and plastic moment conditions
Mechanism and plastic moment conditions Equilibrium condition only
None of the above
92. The external wind pressure acting on a roof depends on
Degree-of permeability of roof Slope ofroof
Both and Direction of slope ofroof
None of the above
93. In the design of lacing system for a built-up steel colunm, the maximum allowable slenderness ratio of lacing bar
IS
120 145
180 (d)250
None ofthe above
94. Which of the following loads are to be considered in the design of a gantry girder in an industrial building
1.
Gravity loads
2.
Lateral loads
3.
Longitudinal loads
4. Wind loads
Select the conect answer using the codes given belmv:
1 and 2 (b)1,2and3
1and3 (d)2,3and4
None ofthe above
95. A structure has two degrees of indeterminacy. The number ofplastic hinges that would be fonned at complete collapse
Zero 1
None oftlle above
96. A steel column in a multi-storied building carries an axial load of 125 N. It is built up of 2 ISMC 350 channels lacing. The lacing carries a load of
125 N 12.5 N
3.125 N Zero
None oftlle above
Cj2010j03 12 Series
97. A member is subjected to axial compression. Effective length is 3000 mm. Size of the angle used is 100 x 100 x
10. What is the maximum capacity (iffy 250 MPa)
101.2 kN 81.7 kN
59.2 kN 95. 1 kN
None of the above
98. Figure given below shows a fixed beam of steel. At the point of collapse, the value of the load W will be
L/2
None of the above
L
L
99. A momentM of magnitude 50 kN-m is transmitted to a column flange tlu'ough a bracket by using four 20 mm diameter rivets as shown in the figure. The shear force induced in each rivet is
Brocket
I
100
1
IL+.•
Column
175.8 kN
250 kN
125 kN 88.4 kN
None of the above
The tension member of a roof truss consists of two unequal angles 70 x 45 x 8 with the longer legs connected by 16 mm diameter rivets. If the angles are one on either side of the gusset plate, then the safe tension for the member will be (assuming permissible stress in tension 50 MPa)
2J 5.4 kN
205 kN
320 kN
310.4 kN
None of the above
Series
QUESTION BOOKLET
Name of Post -ASSISTANT ENGINEER (PUBLIC HEALTIl) " Name of Subject -CIVIL ENGINEERING -PAPER
Roll No.. Booklet Series A
IJ
(Enter your Roll number in the above space) Time Allowed: 2 Hour Max. Marks: -200 INSTRUCTIONS:
1.
Use only BLUE/BLACK Ball Point Pen.
2.
All questions are COMPULSORY.
3.
All questions carry equal marks. Each question carries two marks. There will be no negative marking.
4.
Check the BOOKLET thoroughly.
IN CASE OF ANY DEFECT -MISPRINT, MISSING QUESTION/S, GET TIlE BOOKLET s CHANGED. NO COJvlPLAINT SHALL BE ENTERTAINED AFTER THE TEST.
5.
Before you mark the answer, read the instruction on the back page of the OMR sheet (answer sheet) as well as on the question booklet before attempting the questions and fill the particulars in the ANSWER SI-IEET carefully and correctly. Incomplete Incorrect particulars may result in your answer sheet not being evaluated by the Computer.
6.
There arc FIVE options to each question.
7.
After completing the test, handover the ANSWER SHEET to the Invigilator.
8.
For Rough Work, Blank Sheet is provided at the end of the question booklet
9.
Write the BOOKLET SERIES given at the TOP RIGHT HAND SIDE of the question booklet in the space provide in the answer sheet, by darkening the corresponding circles.
C/2010/03 Series P.T.G.
1. If a system of forces Band C are in equilibrium, then magnitude of their resultant is equal to
A2-1-B2
Zero
None of the above
2. The maximum number of unknown forces that can be determined in a concurrent force system under equilibrium is
Zero 2
None of the above
3. The principle of superposition states that the total deflection of a structure under different sets of oads is equal to the sum of deflections under each set ofloads acting separately on the structure if the loads are within,
Elastic limit Limit State
Propoliionality limit without buckling Elastic limit including buckling
None ofthe above
4. The curvature at any point along the curve representing the defolmed shape of a beam is given by
1
R
1
"'.....
None of the above
5. Ifa cantilever beam of span L and flexural rigidity EI carries a moment M concentrated at the free end, the deflection at the end will be,
{fL
6El
None ofthe above
6. IF a cantilever beam of length L and flexural rigidity EI is carrying a concentrated load P at the free end, the total strain energy will be,
None ofthe above
7. A uniform simply suppOlied beam is subjected to a clock-vise moment M at the left end. The moment required at the right end of the beam so that the rotation of the right end is zero is equal to
M/2 (drM/3
None ofthe above
Cj2010j03 1 Series
8.
9.
10.
11.
12.
13.
14.
15.
The fixed end moment MFAB for the beam shown below is
A MB
L/2 U2
Zero MI2
M/4
None ofthe above
The moment required to rotate the near end of a prismatic beam through unit angle, without translation, the far
end being fixed is
EVL 2EI/L
3EI/L
None of the above
The flexibility coefficient for shaft oflength L and torsional rigidity GJ under torsion at mid-point 15
e/6GJ L/2GJ
L/3GJ L/GJ
None of the above
Generally the actions in a grid member are,
Axial force, twisting moment and bending moment Shear force, twisting moment and bending moment
Axial force, shear force and bending moment Shear force and bi-axial bending moment
None of the above
The number of unknowns to be determined in the stiffness method is equal to
Static indeterminacy Kinematic indeterminacy
Sum of static and kinematic indeterminac Maximum ofstatic indeterminacy and kinematic indeterminacy
None ofthe above
The force required to produce a unit translation displacement (without rotation) of one-third point of a fixed beam of span L and of uniform J1cxural rigidity E1 is
729EIl2e 729EIIe
724EIre 724E1l3e
None of the above
The assumption that plane section remains plane under pure bending which is valid for linear elastic material is not exactly true for plastic bending
True False
True ifthe material is nonlinear elastic True if the deformations are continuous
None ofthe above
Which of the following sections will have the maximum shape factor
Square Circular
Diamond Triangle
None oftlle above
Cj2010j03 2 Series
16. The moment capacity of a section at plastic hinge is
Zero Yield moment
Twice of yield moment Fully plastic moment
None of the above
17. The variation of influence line for the stress function in a statically determinate structure is
Linear Parabolic
Circular Rectangular
None of the above
18. The area of the influence line diagram for the fixed end moment of a fixed beam of span L is
e/8 ell2
e/16 L2/24
None of the above
19. A three-hinged parabolic arch is subjected to a uniform load w per unit horizontal length, the maximum bending moment is (al we/4
wL2/12 Zero
None ofthe abovc
=0. The maximum design stress and the area ofthe concrete stress block at Ultimate Limit State of flexure in a singly reinforced rectangular section are
0.447 fck and 0.362 fck and
0.67 fck and 0.87 fck and 0.362fckbxu
None of the above
The concept of locating neutral axis as a centroidal axis (in a reinforced concrete section under flexure) is
True for WSM and not LSM True for both linear and nonlinear material behaviors
True for both elastic and plastic materials True for elastic materials only
None of the above
The minimum flexural reinforcement of Fe 250 steel in the slabs according to IS 456: 2000 is
0.0012 times gross area of concrete 0.85/fy times the gross area of concrete
0.4/(0.87fy) times the gross area of concrete 0.6% of the gross area of concrete
None of the above
The maximum pefll1lssible shear stress III a steel structural member as per IS 800-1984 is
0.6 0.66
0.45 0.75 fy
None ofthe above
The effective length of the compression flange of cantilever beam which is built-in at the support and free at the
end is
L 0.85L
O.5L 2L
None of the above
Cj2010j03 3 Series
25. The maximum slendemess ratio of a member of a steel structure, subjected to compressive forces resulting from
wind/earthquake forces is
180
300
None of the above
26. Granite is an
Igneous rock
Sedimentary rock
None of the above
27. Refractory bricks resist
High temperature
dampness
None of the above
28. Seasoning of timber is done for
Increasing moisture content
Increasingstrength oftimber
None of the above
29. Cast iron is used for
Structural works in beams
Colunms and struts
None of the above
30. Rapid hardening cement contains
Tri-calcium silicate
Tetra-calcium alumll10 ferrite
None of the above
250
350
Metamorphic rock
All the above
Chemical action
all the above
Decreasing moisture content
Decreasing strength of timber
Small sized water pipes
a c
Tri-calcium aluminate
Di-calcium silicate
31. Black cotton soil is unsuitable for foundations because
Its bearing capacity is low
Its Permeability is uncertain
Its Particles are cohesive
It undergoes volumetric changes due to changes in moisture content
None of the above
32. A cavity wall is generally provided for
Heat insulation Sound insulation
Prevention of dampness All the above
None of the above
33. Veep holes are provided in retaining walls and breast walls
To drain ofIthe vater fj"om the filling To ventilate the stone masomy
To reduce the weight of the earth retained To increase the compaction of the earth retained
None of the above
Cj201Oj03 4 Series
34. If all the dimensions of a bar are increased in the proportion 1 the proportion with which the maximum stress produced in the prismatic bar by its own weight, will increase in the ratio
Ln 1
1
None of the above
35. If Z and I are the section modulus and moment of inertia ofthe section, the shear force F and the bending
moment M at a section are related by
F
F =ctM F JM d.t:
.L
rLet'
None ofthe above
36. Simple bending equation is
f ! Y
.... F
"
)·f
None of the above
37. The shear stress at any section ofa shaft is maximum
At the center of the section At a distance r/2 from the center
At the top of the surface At a distance r from the center
None of the above
38. If a solid shaft is subjected to a torque T at its end such that the maximum shear stress does not exceed fs the diameter of the shaft will be
l$T
97
None of the above
39. In a tension test, the yield stress is 30 N/mnl the octahedral shear stress at the point is
N/mnl N/mm2
N/nml N/mm2
None ofthe above
bet
For a channel section the shear center lies at a distance of
II
None of the above
band t are the total depth of the section, width ofthe flange and conunon thickness of flange and web respectively)
Cj2010j03 5 Series
41. For a given material Young's modulus is 200 GN/m2 and modulus of rigidity is 80 GN/m2 The value of Poisson's ratio is
0.15 0.20
0.35 0040
None ofthe above
42. A rectangular log of wood is floating in water with a load of 100 N at its centre. The maximum shear force in the wooden log is
50 N at each end 50 N at the centre
100 N at the centre Zero
None ofthe above
43. The width ofa beam of uniform strength/having a constant depth d and length simply supported at the ends with a central load W is
3fL....
None of the above
44. Beams of uniform strength are prefened to those of uniform section because these are economical for
Large spans Heavy weights
Light weights Short spans
None ofthe above
45. The ratio of the flexural strengths of tviO square beams one placed with its two sides horizontal and the other placed with one diagonal vertical is
-J3
None ofthe above
46. A bar L meter long and having its area of cross section is subjected to a I=,rradually applied tensile load V. The strain energy stored in the bar is
cAZ
None of the above
47. III case ofprincipal axes of a section
Sum of moment ofineliia is zero Difference of moment of inertia is zero
Product of moment of inertia is zero All the above
None of the above
48. The ratio ofmaximum shear stress to average shear stress on a rectangular section is
1 1.25
1.5 2
None of the above
49. The ratio of the maximum deflections of a simply supported beam with central load Wand of a cantilever of same length and vith a load W at its free end, is
1/8 1/10
1/12 1/16
None of the above
50. The equivalent length of a column of length L having one end fixed and the other end free, is
2L L
L/2 L1'h
None of the above
51. Expansion joints are provided if the length of concrete structure exceeds
10m 15 m
(c)35m (d)4Sm
None of the above
52. The aggregate impact value of aggregate used in
Building concrete is less than 45 Road pavement concrete is less than 30
RUllvay concrete is less than 30 All the above
None of the above
53. Workability of concrete may be improved by adding
Fly ash Hydrated lime
Calcium chloride All the above
None of the above
54. Tn a singly reinforced beam, the effective depth is measured from its extreme compression edge to
Tensile edge Tensile reinforcement
Neutral axis ofthe beam Longitudinal central axis
None of the above
55. The anchorage value ofa hook is assumed 16 times the diameter of the bar if the angle of the bend is
30Lj 40J
45 All the above
None of the above
56. The stresses developed in concrete and steel in reinforced concrete beam of 250 mm width and 700 mm effective depth, are 6.25 Ml)a and 25 MPa respectively. Ifm=15, the depth of it neutralaxis is
200 mm 250 mm
300 11m1 400 Illll1
None of the above
57. A column is regarded as a long column ifthe ratio of its effective length and lateral dimension, exceeds
10 12
20 30
None of the above
58. The ratio ofthe diameter ofreintorcing bars and the slab thickness is
Y4 liS
1/6 1/8
None of the above
59. Diagonal tension in beam
Is maximum at neutral axis
Decreases below neutral axis and increases above the neutral axis
Increases below the neutral axis and decreases above the neutral axis
Remains same
None of the above
60. High carbon content in steel causes
Decrease in tensile strength but increase in ductility
Increase in tensile strength but decrease in ductility
Decrease in both tensile strength and ductility
Increase in both tensile strength and ductility
None of the above
61. Prestressing losses in post-tensioned and pre-tensioned beams are respectively
15% and 20% 20% and 15%
15% and 15% 20% and 20%
None of the above
62. At limit state of collapse in shear in case of web-shear cracks, it is assumed that the concrete cracks when the maximum principal tensile stress exceeds a value offt equal to
None of the above
63. Deep beams are designed for
Shear force only Bending moment 0111y
Both shear force and bending moment Bearing
None of the above
64. Design of one-way RC slabs for concentrated load is done by
Using Pigeaud's moment coefficients
Taking slab strip of unit width containing the load
Taking slab strip ofvvidth effective in resisting the load
Taking orthogonal slab strips of unit vidth containing the load
None of the above
65. The final deflection due to all loads including the effects of temperature, creep and shrinkage and measured from the as-cast level of supports, roofs and all other horizontal members should not exceed
Span/350 Span/300
Span/250 Span/200
None of the above
66, The assumption that the plane sections normal before bending remain nom1al after bending is used
Only in working stress method of design
Only in limit state method of design
In both working stress and limit state methods of design
Only in ultimate load method of design
None of the above
C/2010j03 8 Series
67. The state of the two dimensional stresses acting on a concrete lamina consists of a direct tensile stress, U 1.5
x
N/mm2, and shear stress T 1.20N/nun2, whichcauses cracking ofconcrete. Then thetensilestrength ofconcrete in N/mm2, is
1.50 (b)2.08
2.17 2.29
None of the above
68. The following two statements are made with reference to a simply supported under-reinforced RCC beam:
I. Failure takes place by crushing of concrete before the steel has yielded
II. The neutral axis moves up as the load is increased beyond yielding ofsteel
With reference to the above statements, which ofthe following applies?
Both the statements are false 15t is true but 2nd is false
Both the statements are true 1st is false but 2nd is true
None of the above
69. A simply supported prestressed concrete beam is 6 m long and 300 mm wide. Its gross depth is 600 mm. It is prestressed by horizontal cable tendons at a uniform eccentricity of 100 mm. The prestressing tensile force in the cable tendons is 1000 kN. Neglect the self-weight of the beam. The maximum normal compressive stress in the beam at transfer is
Zero 5.55 N/mm2
(c)ll.1l N/nun2 l5.68N/n11ll2
of the above
-0. Which of the following deformations are important in case of deep beams when compared to flexure alone
Shear Axial
Torsional Bearing
None of the above
The losses in prestress in pre-tensioning system are due to
1. Elastic deformation of concrete
Friction
3. Shrinkage and creep of concrete
Select the correct answer llsing the codes, given below:
(a)1,2and3 and3
1 alone 1 and 3
None of the above
The critical section for two-way shear of footing is at the
Face of the colunm Distance d from the column face
Distance tlI2 from the column face Distance 2d from the coluum face
None of the above
(where d is the effective depth of the footing)
.J. A reinforced concrete beam is to be post-tensioned in such a way that no tensile stress develops at the time of
post-tensioning. The distance of the tendon from the nearest face must be:
Between diS and d/4 <d16
Between d/4 and d/3 d/3
None of the above
(where d is the depth ofthe beam)
74. An RC short column with 300 mm x 300 mm square cross section is made ofM20 concrete and has 4 number of 20 mm diameter longitudinal bars ofFe 415 steel. It is under the action of a concentric axial compressive load. Ignoring the reduction in the area of concrete due to steel bars, the ultimate axial load carrying capacity ofthe column is
1659 kN 1548 kN
1198 kN 1069 kN
None of the above
75. For avoiding the limit state of collapse, the safety of RC structures is checked for appropriate load combinations of dead load imposed load or live load wind load and earthquake load Which ofthe following load combinations is NOT considered?
0.9 DL+ 1.5 WL 1.5 DL 1.5 WL
(c)1.5DL+1.5WL+1.5 EL (d)1.2DL 1.2 IL 1.2 WL
None ofthe above
76. If is the width ifplate is the diameter of rivet, then the efficiency of a riveted joint having diamond riveting is given by
D d
b-.ld. b-ld
c,J "
"
None of the above
77. When the effect ofwind or earthquake load is taken into account, the permissible stress as specified in rivets may be increased by
33.33% 50%
10% 25%
None ofthe above
78. A column base is subjected to moment. If the intensity of bearing pressure due to axial load is equal to stress due to moment, then the bearing pressure between the base and the concrete is
UnifoDn compression through out
Zero at one end and compression at other end
Tension at one end and compression at the other end
Uniform tension through out
None of the above
79. If a tension member is subjected to axial load and bending moment, then
1
None of the above
80. Ratio ofplastic section modulus to elastic section modulus for circular section is
14 16
,.. " 1.6
lC)
None ofthe above
Cj2010j03 10 Series
81. The value of the collapse load for a fixed beam ofspan plastic moment 111" subjected to a concentrated load W at the mid-span, will be
L
I.
L
None of the above
82. A cantilever steel beam of 3 m span carries a uniformly distributed load of 20 kN-m (inclusive of self weight). The beam comprises ISLB 200 @198 flange 100 nun x 7.3 mm, web thickness 5.4 mm, Ixx 1696. 6 nm14, Iff 115.4 cm4. Bending and shear stresses in the beam, respectively
530.47N/rnm2 and 55.55 Nlmm2 3899.48 N/rnm2 and 82.19 N/mm2
132.62 N/mm2 and 27.78 N/nm12 1949.74 N/mm2 2nd 41.10 N/mm2
-1.T r
p. ....-F thp h ..... TP
v J ..I. V-l-lv..l..lV .......
83. The problem oflateral buckling can arise only in those steel beams which has
Moment of inertia about the bending axis larger than the other
tvJoment of inel1ia about the bending axis smaller than the other
Fully supported compression flange
Concentric axial force
None of the above
84. For a standard 45° fillet weld, the ratio of fillet to throat thickness IS
1:1 1:12
2:1
None ofthe above
85. For a compression with double angle sectIOn, which of the following section will give larger value ofminimum racllUs of t,ryration?
Equal angles back to back Unequal Jegged angles with long legs back to back
Unequal legged angles with short legs back to back Both or
None of the above
86. Angle of inclination of the lacmg bar with the longitudinal axis ofthe COIUlllil should preferably be between
10° to 30° 30° to 40°
40° to 70° 90°
None of the above
87. Battens provided for a compression member shall be designed to carry a transverse shear equal to
2.5% ofthe axial force in the member ofthe axial force in the member
10% of the axial force in the member of the axial force in the member
None of the above
88. As per IS: 800, for compression flange, the outstand ofi1ange plates should not exceed (a)12t (b)16t
(c)20t (d)25t
None ofthe above
89. The web crippling due to excessive bearing stresses can be avoided by
Increasing the web thickness Providing suitable stiffeners
increasing the length of the bearing plate All the above
none of the above
90. Intermediate veriical stiffeners are provided in plate girders to
eliminate web buckling eliminate local buckling
transfer concentrated loads prevent excessive deflections
None of the above
91. The static theorem of plastic analysis satisfies
Equilibrium and mechanism conditions Equilibrium and plastic moment conditions
Mechanism and plastic moment conditions Equilibrium condition only
None of the above
92. The external wind pressure acting on a roof depends on
Degree-of permeability of roof Slope ofroof
Both and Direction of slope ofroof
None of the above
93. In the design of lacing system for a built-up steel colunm, the maximum allowable slenderness ratio of lacing bar
IS
120 145
180 (d)250
None ofthe above
94. Which of the following loads are to be considered in the design of a gantry girder in an industrial building
1.
Gravity loads
2.
Lateral loads
3.
Longitudinal loads
4. Wind loads
Select the conect answer using the codes given belmv:
1 and 2 (b)1,2and3
1and3 (d)2,3and4
None ofthe above
95. A structure has two degrees of indeterminacy. The number ofplastic hinges that would be fonned at complete collapse
Zero 1
None oftlle above
96. A steel column in a multi-storied building carries an axial load of 125 N. It is built up of 2 ISMC 350 channels lacing. The lacing carries a load of
125 N 12.5 N
3.125 N Zero
None oftlle above
Cj2010j03 12 Series
97. A member is subjected to axial compression. Effective length is 3000 mm. Size of the angle used is 100 x 100 x
10. What is the maximum capacity (iffy 250 MPa)
101.2 kN 81.7 kN
59.2 kN 95. 1 kN
None of the above
98. Figure given below shows a fixed beam of steel. At the point of collapse, the value of the load W will be
L/2
None of the above
L
L
99. A momentM of magnitude 50 kN-m is transmitted to a column flange tlu'ough a bracket by using four 20 mm diameter rivets as shown in the figure. The shear force induced in each rivet is
Brocket
I
100
1
IL+.•
Column
175.8 kN
250 kN
125 kN 88.4 kN
None of the above
The tension member of a roof truss consists of two unequal angles 70 x 45 x 8 with the longer legs connected by 16 mm diameter rivets. If the angles are one on either side of the gusset plate, then the safe tension for the member will be (assuming permissible stress in tension 50 MPa)
2J 5.4 kN
205 kN
320 kN
310.4 kN
None of the above
Series