Civil Engineering MCQs

Page No. 252

In counterfort type retaining walls_____________? 1. the vertical slab is designed as a continuous slab 2. the heel slab is designed as a continuous slab 3. the vertical slab is designed as a cantilever 4. the heel slab is designed as a cantilever The correct answer is?


a(1) and (ii)

✓


b (1) and(4)

✖


c (2) and (3)

✖


d(3) and (4)

✖


View Answer (1) and (ii)

Examine the following statements ___________? 0 1. Factor of safety for steel should be based on its yield stress, 2. Factor of safety for steel should be based on its ultimate stress, 3. Factor of safety for concrete should be based on its yield stress, 4. Factor of safety for concrete should be based on its ultimate stress. The correct statements are


a(1) and (3)

✖


b (1) and(4)

✓


c(2) and (3)

✖


d (2) and (4)

✖


View Answer (1) and(4)

The effect of adding calcium chloride in concrete is________________? 0 1. to increase shrinkage 2. to decrease shrinkage 3. to increase setting time 4. to decrease setting time The correct answer is?


a (1) and (3)

✖


b(1)and(4)

✓


c(2)and (3)

✖


d (2)and (4)

✖


View Answer (1)and(4)

In T-shaped R C. retaining walls, the main reinforcement in the stem is provided on______________?


athe front face in one direction

✖


b the front face in both directions

✖


c the inner face in one direction

✓


dthe inner face in both directions

✖



The recommended value of modular ratio for reinforced brick work is______________?


a18

✖


b30

✖


c40

✓


d58

✖


View Answer 40

The effect of creep on modular ratio is__________________?


a to decrease it

✖


bto increase it

✓


ceither to decrease or to increase it

✖


d to keep it unchanged

✖


View Answer to increase it

In symmetrically reinforced sections, shrinkage stresses in concrete and steel are respectively_______________?


acompressive and tensile

✖


btensile and compressive

✓


cboth compressive

✖


dboth tensile

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In a spherical dome subjected to concentrated load at crown or uniformly distributed load, the meridional force is always________________?


azero

✖


btensile

✖


c compressive

✓


d tensile or compressive

✖


View Answer compressive

The maximum value of hoop compression in a dome is given by___________________?


awR / 4d

✖


bwR/2d

✓


c wR/d

✖


d2wR/d

✖


View Answer wR/2d

The purpose of reinforcement in prestressed concrete is________________?


ato provide adequate bond stress

✖


bto resist tensile stresses

✖


cto impart initial compressive stress in concrete

✓


dall of the above

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