1 The degree of grinding of cement is
called
A A fineness
B soundness
C impact
value
D bulking
2 Vicat’s apparatus is used to perform
C A fines test
B soundness
test
C consistence test
D compressive strength test
3 The knowledge of standard consistence of
cement is essential to perform
D A setting
time test
B soundness test
C compressive strength
test
D all of these
4 A sample of cement is said to be sound
when it does not contain free
A A lime
B silica
c alumina
d iron oxide
5 In OPC magnesia is restricted to
A A 5
%
B 2.5 %
c 1.5 %
d 1.0 %
6 For OPC the maximum expansion of le
chatelier’s apparatus should not exceed
C A 5
mm
B 7.5
mm
C 10 mm
D 12 mm
7 Cylinder strength of concrete as compared
with cube is
B A 70%
B 80
%
C 90 %
D 100 %
8 Concrete samples in the labortary are
cured at a temperature of
C A 10oC
B 15oC
C 20oC
D 25oC
9 The approximate strength of concrete at
28 days as a percentage of strength at one year is
C A 98
B 90
C 80
D 75
10 Ratio of tensile strength of concrete to
its compressive strength is
A A 1/10
B 1/20
C 1/25
D 1/33
11 For ordinary concrete work the method of
concrete mix design
A A arbitrary
B minimum
voids
C maximum density
D fineness
modulus
12 Maximum density method is also called
B A minimum
voids
B trail method
C fineness modulus
D none
of above
13 The continuous strain which the concrete
undergoes due to application of external loads is called
D A workability
B bleeding
C segregation
D creep
14 For high degree of workability the
compaction factor is
D A 0.65
B 0.75
C 0.85
D 0.95
15 The workability of concrete by slump test
is expressed as
D A minutes
B mm/h
C mm2/h
D mm
16 Grading of aggregates in a concrete mix is
necessary to achive
C A workability
B higher density
C reduction of voids
D better
durability
17 The reasonable slump for mass concrete
should be
D A 90
– 180 mm
B 10 – 30 mm
C 50 – 75 mm
D 20
– 50 mm
18 For mass concrete works the degree of
workability should be
A A low
B average
C high
D very high
19 Portland cement is heavier than water by
about
C A 1.15
times
B 2.30 times
C 3.15 times
D 3.85 times
20 For an RCC slab slump of concrete should be
C A 25 – 50 mm
B 25 – 100 mm
C 50 – 125 mm
D 100
– 150 mm
21 Slump of concrete to be transported by
pumping should be
B A more
than 100 mm
B between 75 – 100 mm
C between 25 – 50 mm
D more than 25 mm
22 The slump test of concrete is used to
measure
A A consistency
B mobility
C homogeneity
D all of these
23 If the slump of concrete mix is 70 mm its
workability is considered to be
C A very low
B low
C medium
D high
24 A compacting factor of 0.88 indicates that
the workability of concrete mix is
C A very
low
B low
C medium
D high
25 To prevent segregation the concrete should
not be thrown from the hight of more than
B A 50 cm
B 100 cm
C 150 cm
D 200 cm
26 In the slump test each layer of concrete is
compacted by a steel road for
C A 15
time
B 20 time
C 25 time
D 50 time
27 The cement becomes useless if its absorbed
moisture exceeds
D A 1 %
B 2 %
C 3%
D 5 %
28 Maximum water/cement ratio required for a
workable concrete is
B A 0.30
B 0.40
C 0.50
D 0.60
29 Shrinkage of concrete is due to change in
D A length
B volume
C surface area
D cross
sectional area
30 Concrete shrinkage is more in
A A rich
mix
B lean mix
C normal mix
D very lean mix
31 Time dependent phenomenon in concrete is
D A gain
of strength
B creep
C shrinkage
D all
of above
32 Shrinkage strain in concrete is
approximately
A A 0.0035
B 0.0003
C 0.0350
D 0.3500
33 The approximate value of thermal
coefficient of expansion of concrete
B A 9
x 10-5 per oC
B 10 x 10-6 per oC
C 9 x 10-7 per oC
D 8 x 10-6 per oC
34 Rate of shrinkage of concrete in earlier
stages
A A high
B low
C normal
D uniform
35 Material used in concrete to reduce
bleeding and increasing workability is
A A flyash
B surkhy
C table salt
D gypsum
36 Method of measuring workability
D A slump
test
B compacting
factor test
C vee bee test
D all of these
37 Diameter of rod used in slump test
A A 16
mm
B 20 mm
C 22 mm
D 25 mm
38 No. of concrete layers in slump mould
C A 2
B 3
C 4
D 5
39 _____ Can result due to evaporation of
water from concrete mix
A A shrinkage
B creep
C harshness
D abrasion
40 Afflourance in cement is due to
A A alkali
B lime
C silica
D iron oxide
41 ______ In water used for concrete reduces
setting time
A A calcium carbonate
B sodium carbonate
C sodium chloride
D sodium sulphate
42 Concreting at the temperature below
________ is called cold weather concreting
B A 0oc
B 5 oc
C 10 oc
D 20 oc
43 In cold weather curing of concrete should
be continued for
D A 7
days
B 14 days
C 21 days
D 28 days
44 Tube used for concreting under water
C A scales
B tremie
C filter
D ejector
45 The process of producing compression in a
concrete structural member before use is called
C A pre
tensioning
B post tensioning
C pre stressing
D high
tensioning
46 If steel is stretched before casting of
concrete in prestressing it is called
A A pre tensioning
B post tensioning
C pre casting
D post
casting
47 Pre stressing helps in avoiding the
formation of
A A cracks
B temperature stresses
C shrinkage
D all
of these
48 In concrete if the reinforcement wires are
stretched after the concrete has hardened it is called
A A post
tensioning
B initial tensioning
C high tensioning
D pre tensioning
49 Minimum strength of concrete for the post
tensioned work shall not be less than
B A 20
N/mm2
B 30 N/mm2
C 40 N/mm2
D 50 N/mm2
50 Minimum strength of concrete used in pre
stressing
D A 3000
psi
B 4000 psi
C 5000 psi
D 6000 psi
51 Steel used in pre stressed concrete is
D A mid
steel
B wrought iron
C stainless steel
D high
carbon steel
52 Steel used in ordinary RCC work
B A standard
steel
B mild steel
C high carbon steel
D iron
53 ________Steel is used in prestrssed
concrete
C A stainless
B mild
C high carbon
D wrought iron
54 Amount of carbon present in mild steel
A A 0.05
– 3 %
B 0.5 – 1.0 %
C 1 – 1.5 %
D 1.5 – 2 %
55 The co efficient of thermal expansion of
concrete is nearly equal to
C A copper
B aluminium
C steel
D wood
56 In RCC steel reinforcement takes up
________ stresses
B A shear
B tensil
C compressive
D all of above
57 Hook is not provided in
C A mid
steel bars
B plain bars
C deformed steel bars
D wrought
iron bars
58 Unit weight of RCC is
D A 2000
kg/m3
B 2300 kg/m3
C 2400 kg/m3
D 2500
kg/m3
59 Factor of safety for steel taken in
ordinary design is
A A 2
B 3
C 4
D 5
60 Shear stress is ________ of compressive
stress
A A 1/10
th
B 1/15 th
C 1/20 th
D 1/25 th
61 Factor of safety for concrete in working
stress method is
B A 2
B 3
C 4
D 5
62 __________Is the algebraic sum of vertical
forces at any section of beam
A A shear
force
B shear stress
C bending moment
D bending stresses
63 Stirrups are used in
A A beams
B slab
C column
D footing
64 Stirrups are provided in beams to check
C A tension
B compression
C shear
D all of these
65 Anchor bars are provided to
D A resist
shear
B resist compressio
C resist tension
D support
stirrups
66 If shear stress increases ______ of bending
stress shear reinforcement is required
B A 1/5
B 1/10
C 1/20
D 1/30
67 Diagonal tension caracks are at ________
degrees
B A 30
B 45
C 60
D 90
68 Extra reinforcement is not required for
C A beam
B column
C slab
D T-beam
69 Radius of bar bend to form a hook should
not be less than
A A 2d
B 3d
C 4d
D 5d
70 ________Is the ratio between tensile stress
and compressive stress of concrete
B A lever
arm
B modular ratio
C neutral
axis to depth ratio
D none
of above
71 Tensile strength of concrete as compared to
its compressive strength is
B A 8
%
B 10 %
C 12 %
D 15 %
72 Unit weight of RCC is
A A 150
lb/cft
B 144 lb/cft
C 120 lb/cft
D 62.5 lb/cft
73 Area of two bars of ½ inch diameter is
B A 0.196
in2
B 0.392 in2
C 0.588 in2
D none of these
74 Depth of cantilever beam is assumed as
A A span/10
B span/12
C span/20
D span/30
75 Depth of neutral axis for (750-20000-15)
concrete in elastic theory method
A A 0.36
d1
B 0.43 d1
C 0.40 d1
D 0.39 d1
76 In case of continuous beam steel position
at supports
C A simply
supported
B T-beam
C cantilever
D None
of these
77 Strength of deformed steel is _______more
than plain mild steel
A A 20%
B 30%
C 50%
D 60%
78 If in elastic theory method depth of N.A is
0.39 d1 then la is
B A 0.88
d1
B 0.57 d1
C 0.857 d1
D 0.5 d1
79 The amount of steel in (50-1400-18)
concrete
B A 0.5%
B 0.7 %
C 1.0 %
D 100 %
80 If the thickness of slab is 6 inch than its
self weight is
C A 25
lb
B 50 lb
C 75 lb
D 100 lb
81 Maximum spacing of main bars in slab is
A A 3
d1
B 4 d1
C 5 d1
D 6
d1
82 Width of slab considered for design is
D A 100mm
B 200 mm
C 500 mm
D 1000 mm
83 Minimum reinforcement in slab is ______ of
gross cross sections
B A 0.10%
B 0.15%
C 0.20%
D 0.30%
84 The minimum imposed load in lb/sft for
domestic floor slab is taken as
A A 50
B 40
C 30
D 20
85 Minimum concrete cover outside the main
bars of slab is
B A 0.75”
B 0.5”
C 1”
D 1.5”
86 The weight/sq. m of 15 cm thick RCC slab is
equal to
B A 360
kg
B 375 kg
C 390 kg
D 405 kg
87 The ratio of span to overall depth for one
way slab is
C A 40
B 35
C 30
D 25
88 Anchor bars are provided to
D A resist
shear
B doubly reinforced
C resist
D ELL beam
89 Economical method for design of doubly
reinforced beam
C A steel
beam
B elastic theory
C load factor
D none
of these
90 In steel beam theory lever arm for doubly
reinforced beam is
C A 0.88
d1
B 0.857d1
C d1-d2
D d1-ds/2
91 The thickness of two way should not be less
than
B A 4
cm
B 10 cm
C 15 cm
D 20cm
92 Width of strip of two way slab is
considered for design
D A 10
cm
B 12 cm
C 15 cm
D 100 cm
93 Maximum spacing of bars in case of two way
slab
B A 2
d1
B 3 d1
C 5 d1
D lever arm
94 Width of strip considered for design of two
way slab is
C A 15
cm
B 50 cm
C 100 cm
D 10 cm
95 In case of cantilever slab steel bars are
placed at
A A top
B bottom
C middle
D anywhere
96 The neutral axis in a T beam section falls
B A within
the flange
B outside the flange
C either a or b
D none
of these
97 ________Stresses are resisted by flange of
T beam
C A tensile
B compressive
C bending
D shear
98 For a simply supported T beam the ratio of
the effective span to overall depth of beam should be less than
B A 10
B 20
C 40
D 80
99 When slenderness ratio does not exceed 12
it is termed as
B A long
column
B short column
C vertical column
D none
of these
100 Minimum amount of steel used in column is
B A 0.5%
B 0.8%
C 1%
D 1.5%
101 Over lapping steel in column is
A A 20
db
B 40 db
C 10 db
D 30 db
102 The diameter of lateral tries in no case
shall be less than
A A 6 mm
B 10 mm
C 15 mm
D 20 mm
103 For lateral ties ina column (400 mm x 400 mm
) the clear cover should not be less than
D A 10mm
B 20 mm
C 30 mm
D 40 mm
104 Minimum number of longitudinal bars in a
column with helical reinforcement
B A 4
B 4
C 8
D 10
105 Headroom should not be less than
B A 1.15
m
B 2.15 m
C 3.15 m
D 4.15 m
106 The steps used for changing direction of
stairs
A A winders
B nosing
C risers
D none of above
107 The under surface of a stair slab
C A nosing
B pitch
C soffit
D waist
0 Comments