PARISUTHAM INSTITUTE OF TECHNOLOGY AND
SCIENCE
QUIZ-1
Department of Civil Engineering
IV Year VII Semester
CE2401-DESIGN OF RC AND BRICK
MASONRY STRUCTURES
1. M10 grade of concrete approximates
a)
b)
c)
d)
1:3:6
1:1:2
1:2:4
1:1.5:3
2. M25 grade of concrete approximates
a)
b)
c)
d)
1:3:6
1:1:2
1:2:4
1:1.5:3
3. The normal grades of concrete used in
reinforced concrete buildings are
a)
b)
c)
d)
M15,M20,M25
M7.5,M10,M15
M20,M25,M30
M5,M7.5,M10
4. Deflection can be controlled by using
appropriate
a. Aspect ratio
b. Modular ratio
c. span/depth ratio
d. water/cement ratio
5. The maximum diameter of the reinforcement
bars in RCC beams is limited to
a)
b)
c)
d)
28mm
40mm
One-eighth of the least dimension of the beams
One-tenth of the depth of beams.
6. The effective width of flange in RCC T-beam
should be restricted to
a)
b)
c)
d)
Lo/6+bw+6df
Lo/12+bw+3df
Lo/3
c/c distance of the beams
7. the tension reinforcement in a RCC beam can
be cut off at a point when it is no longer
needed if
a) enough bond length is available
b) the shear at the cutoff point does not exceed
two third
c) bending moment is zero
d) all the above
8.the maximum horizontal distance between
parallel main reinforcement bars in solid slabs is
a) 5times the effective depth or 450mm whichever is
smaller
b) 3times the effective depth or 450mm whichever is
smaller
c) 200mmtimes the effective depth or 450mm
whichever is smaller
d) 7times the effective depth or 450mm whichever is
smaller
9.The minimum cover to the main reinforcement
in RCC beam must be
a)
b)
c)
d)
15mm or diameter of the bar
25mm or diameter of the bar
40mm or diameter of the bar
25mm or size of course aggregate
10. The minimum cover to the main
reinforcement in RCC slab must be
a)
b)
c)
d)
15mm or diameter of the bar
25mm or diameter of the bar
40mm or diameter of the bar
25mm or size of course aggregate
11. Working stress design assumes
a)
b)
c)
d)
Elastic stress strain relation
Linear stress strain relation
Elastic and linear stress strain relation
Isotropic material
12.The stress caused by different loads can be
superimposed in
a)
b)
c)
d)
Working stress design
Ultimate strength design
Limit state design
Plastic design
13.In the limit state method partial factor of
safety for concrete is taken as
a)
b)
c)
d)
3
2
1.15
1.5
14. In the limit state method partial factor of
safety for steel is taken as
a)
b)
c)
d)
3
2
1.15
1.5
15.A partition wall is designed to carry
a)
b)
c)
d)
Live load
Imposed load
Vertical loads
No external loads
16. A shear wall is designed to carry
a)
b)
c)
d)
Axial shear and bending forces
Shear force
Shear and bending
Axial and bending
17. The maximum strain in the tension
reinforcement in the section
a)
b)
c)
d)
1.15Es/Fy+0.002
Fy/1.15Es+0.002
1.15ES/Fy
None of the above
18. In the limit state method the over reinforced
section
a)
b)
c)
d)
Are not permitted
Are permitted
Are permitted only in extreme cases
None of the above
19. The distance to the neutral axis from the top
compression fiber of a singly reinforced
rectangular section is given by
a)
b)
c)
d)
Xu=0.36fckb/0.87fyAst
Xu=0.36fyAst/0.87fckast
Xu=0.36FYb/0.87fckast
Xu=0.87fyast /0.36fckb
20. High increase in temperature ……the
strength of concrete
a)
b)
c)
d)
Increase
Has no effect
Decrease
None of the above
21. which of the following test gives the
workability of concrete
a)
b)
c)
d)
compression test
bending test
slump test
none of the above
22. as per IS code full strength of concrete is
attained….days after casting
a)
b)
c)
d)
7
14
21
28
23. The entrained air in concrete
a)
b)
c)
d)
increase workability
decrease workability
increase strength
none of these
24.The approximate value of the ratio between
direct tensile and flexureal strength is
a)
b)
c)
d)
0.33
0.5
0.75
1.0
25.The factor of safety for
a)
b)
c)
d)
Steel and concrete are same
Steel is lower than that for concrete
Steel is higher than that for concrete
None of the above
26.If a beam fails in bond, then its bond strength
can be increased most economically by
a)
b)
c)
d)
Increasing the depth of beam
Using thinner bars but more in number
Using thicker bars but less in number
Providing vertical stirrups
27.If the permissible stress in steel in tension is
140N/mm2, then the depth of neutral axis for
a singly reinforced rectangular balanced
section will be
a) 0.35d
b) 0.40d
c) 0.45d
d) Dependent on grade of concrete also
28. Modulus of elasticity of steel as per IS code
shall be taken as
a)
b)
c)
d)
20kN/cm2
200kN/cm2
20kN/mm2
2 x 105N/mm2
29. If the depth of actual neutral axis in a beam
is more than the depth of critical neutral axis
then the beam is called
a)
b)
c)
d)
Balanced beam
Under reinforced beam
Over reinforced beam
None of the above
30. According to is code the flexural strength of
concrete is
a) Directly proportional to compressive strength
b) Inversely proportional to compressive strength
c) Directly proportional to square root of
compressive strength
d) Inversely proportional to square root of
compressive strength
31.The ratio of the diameter of reinforcing bars
and slab thickness is
a) 1/4
b) 1/5
c) 1/6
d) 1/8
32. The percentage of reinforcement in case of
slabs when HYSD are used is not less than
a)
b)
c)
d)
0.15
0.12
0.30
1.00
33. The slab id designed as one way if the ratio
of long span to short span is
a)
b)
c)
d)
Less than 1
Between 1 and 1.5
Between 1.5 and 2
Greater than 2
34. The main reason for providing number of
reinforcing bars at a support in a simply
supported beam is to resist in that zone
a)
b)
c)
d)
Compressive stress
Shear stress
Bond stress
Tensile stress
35. When the shear stress exceeds the
permissible limit in a slab then it is reduced by
a)
b)
c)
d)
Increasing the depth
Providing shear reinforcement
Using high strength steel
Using thinner bars but more in numbers
36. According to IS code the maximum
compressive stress in concrete for design
purpose is taken as
a)
b)
c)
d)
0.370fck
0.416fck
0.446fck
0.670fck
37. The creep strain are
a)
b)
c)
d)
Caused due to dead load only
Caused due to live load only
Caused due to both dead and live load
Independent of load
38. A beam curved in plan is designed for
a)
b)
c)
d)
Bending moment and shear
Bending moment and torsion
Shear and torsion
Bending moment, shear and torsion
39. Stress strain curve of high tensile steel
a) Has a definite yield point
b) Does not show definite yield point but yield
point is defined by 0.2% proof stress
c) Does not show definite yield point but yield
point is defined by 0.1% proof stress
d) Does not show definite yield point but yield
point is defined by 2% proof stress
40. The bond strength between steel and
concrete is due to
a)
b)
c)
d)
Friction
Adhesion
Both friction and adhesion
None of the above
41.For reinforced concrete exposed to sulphate
attack minimum grade required
a)
b)
c)
d)
M10
M15
M20
M25
42.in the limit state design of concrete for
flexure the area of stress block is taken as
a)
b)
c)
d)
0.36 fck Xu
0.42 fck Xu
0.446 fck Xu
0.53 fck Xu
43. In limit state design the limiting value of
depth of neutral axis is
a)
b)
c)
d)
0.53d
0.48d
0.45d
0.43d
44.Design strength of concrete for limit state of
collapse is taken as
a)
b)
c)
d)
Fck
0.67fck/FOS
0.67fck
FOS fck
45.In the LSM design of concrete structure the
strain distribution is assumed to be
a)
b)
c)
d)
Linear
Non linear
Parabolic
Parabolic and rectangular
46. Mulim of a singly reinforced balanced RC
rectangular beam section is
a)
b)
c)
d)
0.115fck bd2
0.138 fck bd2
0.185 fck bd2
0.225 fck bd2
47. For a given grade of steel the limiting
reinforcement index for a singly reinforced
beam is proportional to
a)
b)
c)
d)
Fck
Fy
Fy/fck
Fck/Fy
48. In case of two slab the limiting deflection of
the slab is
a)
b)
c)
d)
Primarily a function of the long span
Primarily a function of the short span
Independent of long or short span
Dependent on both long and short spans
49. A doubly reinforced beam is considered less
economical than a singly reinforced beam
because
a) Tensile steel required is more than that for a
balanced section
b) Shear reinforcement is more
c) Concrete is not stressed to its full value
d) Compressive steel is under stressed
50. Torsion resisting capacity of a given RC
section
a) Decrease with decrease in stirrups spacing
b) Decreases with increase in longitudinal bars
c) Does not depend upon stirrups and longitudinal
steels
d) Increase with the increase in stirrup and
longitudinal steels