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Concrete Technology and Design of Concrete Structures

Concrete Technology and Design of Concrete Structures
The individual variation between test strength of sample should not be more than

±5% of average
± 10% of average
±20% of average
± 15% of average

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Concrete Technology and Design of Concrete Structures
If the storey height is equal to length of RCC wall, the percentage increase in strength is

10
20
30

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Concrete Technology and Design of Concrete Structures
Ultimate strength of cold drawn high steel wires

increases with increase in diameter of bar
decreases with increase in diameter of bar
does not depend on diameter of bar
None of these

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Concrete Technology and Design of Concrete Structures
The percentage of voids in cement is approximately

70%
40%
60%
50%

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Concrete Technology and Design of Concrete Structures
For the design of retaining walls, the minimum factor of safety against overturning is taken as

3
2
1.5
2.5

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Concrete Technology and Design of Concrete Structures
Finer grinding of cement

affects only the ultimate strength
affects only the early development of strength
does not affect the strength
both (a) and (b)

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