Hiried Concrete Technology and Design of Concrete Structures Multiple choice Questions and Answers pdf

101.   The  depth  of footing  for  an isolated column is governed by
i)    maximum bending moment
ii)   shear force
iii) punching shear The correct answer is
a) only (i)
b) (i)and(ii)
c) (i) and (iii)
d) (i), (ii) and (iii)
Ans: d

102. If the foundations of all the columns of a structure are designed on the total live and dead load basis, then
a) there will be no settlement of columns
b) there will be no differential settlement
c) the  settlement of exterior columns will be more than interior columns
d) the settlement of interior columns will be more than exterior columns
Ans:c

103. To minimise the effect of differential settlement, the area of a footing should be designed for
a) dead load only
b) dead load + live load
c) dead load + fraction of live load
d) live load + fraction of dead load
Ans: c

104. The critical section for finding maximum bending moment for footing under masonry wall is located
a) at the middle of the wall
b) at the edge of the wall
c) halfway between the middle and edge of the wall
d) at a distance equal to effective depth of footing from the edge of the wall
Ans: c

105. In a pile of length /, the points of suspen¬sion from ends for lifting it are located at
a) 0.207 1
b) 0.25 /
c) 0.293 /
d) 0.333 /
Ans: a

106. During erection, the pile of length / is supported by a crane at a distance of
a) 0.207 /
b) 0.293 /
c) 0.7071
d) 0.793 /
from the driving end of pile which rests on the ground
Ans: c

107. While designing the pile as a column, the end conditions are nearly
a) both ends hinged
b) both ends fixed
c) one end fixed and other end hinged
d) one end fixed and other end free
Ans: c

108. The recommended value of modular ratio for reinforced brick work is
a) 18
b) 30
c) 40
d) 58
Ans: c

109. According to ISI recommendations, the maximum depth of stress block for balanced section of a beam of effective depth d is
a) 0.43 d
b) 0.55 d
c) 0.68 d
d) 0.85 d
Ans: a

110. Assertion A : The load factor for live load is greater than that for dead load.
Reason  R  :  The  live  loads are more uncertain than dead loads.
Select your answer based on the coding system given below :
a) Both A and R are true and R is the correct explanation of A.
b) Both A and R are true but R is not the correct explanation of A.
c) A is true but R is false.
d) A is false but R is true.
Ans: a

111. The centroid of compressive force, from the extreme compression fibre, in limit state design lies at a distance of
a) 0.367 xu
b) 0.416 xu
c) 0.446 xu
d) 0.573 xu
where xu is the depth of neutral axis at the limit state of collapse
Ans: b

112. The design yield stress of steel according to IS: 456-1978 is
a) 0.37 fy
b) 0.57 fy
c) 0.67 fy
d) 0.87 fy
where fy is the characteristic yield strength of steel
Ans: d

113. According to Whitney's theory, ultimate strain of concrete is assumed to be
a) 0.03%
b) 0.1%
c) 0.3%
d) 3%
Ans: c

114. According to Whitney's theory, depth of stress block for a balanced section of a concrete beam is limited to
a) 0.43 d
b) 0.537 d
c) 0.68 d
d) 0.85 d
where d is effective depth of beam[ES 2k]
Ans: b

115. The load factors for live load and dead load are taken respectively as
a) 1.5 and 2.2
b) 2.2 and 1.5
c) 1.5 and 1.5
d) 2.2 and 2.2
Ans:b

116. As per Whitney's theory, the maximum moment of resistance of the balanced section of a beam of width b and effective depth d is given by
a) ^acybd2
b) ^acybd2
c) 0.185acybd2
d) 0.43acybd2
where  acy  is the  cylinder compressive strength of concrete
Ans: b

117.   The effect of creep on modular ratio is
a) to decrease it
b) to increase it
c) either to decrease or to increase it
d) to keep it unchanged
Ans: b

118.    Shrinkage of concrete depends upon
i)    humidity of atmosphere
ii)   passage of time
iii) stress The correct answer is
a) (i) and (ii)
b) (ii) and (iii)
c) only (iii)
d) All (i), (ii) and (iii)
Ans: a

119. Due to shrinkage stresses, a simply supported beam having reinforcement only at bottom tends to
a) deflect downward
b) deflect upward
c) deflect downward or upward
d) none of the above
Ans: a

120. In symmetrically reinforced sections, shrinkage stresses in concrete and steel are respectively
a) compressive and tensile
b) tensile and compressive
c) both compressive
d) both tensile
Ans: b

Read More Questions:
Concrete Technology and Design MCQs Part1
Concrete Technology and Design MCQs Part2
Concrete Technology and Design MCQs Part3
Concrete Technology and Design MCQs Part4
Concrete Technology and Design MCQs Part5
Concrete Technology and Design MCQs Part6
Concrete Technology and Design MCQs Part7
Concrete Technology and Design MCQs Part8

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