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Concrete Technology and Design of Concrete Structures

Concrete Technology and Design of Concrete Structures
The effect of creep on modular ratio is

to increase it
either to decrease or to increase it
to decrease it
to keep it unchanged

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Concrete Technology and Design of Concrete Structures
In a ring beam subjected to uniformly distributed load
i) shear force at mid span is zero
ii) shear force at mid span is maximum
iii) torsion at mid span is zero
iv) torsion at mid span is maximum
The correct answer is

(ii) and (iii)
(i) and (iii)
(ii) and (iv)
(i) and (iv)

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Concrete Technology and Design of Concrete Structures
The recommended value of modular ratio for reinforced brick work is

40
88
99
35

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Concrete Technology and Design of Concrete Structures
The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (where xu is the depth of neutral axis at the limit state of collapse)

0.416 xu
0.446 xu
0.367 xu
0.573 xu

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Concrete Technology and Design of Concrete Structures
In a spherical dome subjected to concentrated load at crown or uniformly distributed load, the meridional force is always

compressive
tensile or compressive
zero
tensile

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Concrete Technology and Design of Concrete Structures
Admixtures which cause early setting, and hardening of concrete are called

air entraining agents
retarders
accelerators
workability admixtures

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