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Concrete Technology and Design of Concrete Structures

Concrete Technology and Design of Concrete Structures
Bulking of sand is maximum if moisture content is about

4%
5%
6%
7%

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Concrete Technology and Design of Concrete Structures
The minimum cover in a slab should neither be less than the diameter of bar nor less than

10 mm
30 mm
20 mm
15 mm

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Concrete Technology and Design of Concrete Structures
Shrinkage of concrete depends uponi) humidity of atmosphereii) passage of timeiii) stressThe correct answer is

(ii) and (iii)
All (i), (ii) and (iii)
(i) and (ii)
only (iii)

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Concrete Technology and Design of Concrete Structures
The slab is designed as one way if the ratio of long span to short span is

between 1.5 and 2
between 1 and 1.5
less than 1
greater than 2

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Concrete Technology and Design of Concrete Structures
Due to shrinkage stresses, a simply supported beam having reinforcement only at bottom tends to

None of these
Deflect downward
Deflect downward or upward
Deflect upward

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Concrete Technology and Design of Concrete Structures
Approximate value of shrinkage strain in concrete, is

3.0E-5
0.03
0.003
0.0003

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