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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

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

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

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Concrete Technology and Design of Concrete Structures
For a continuous slab of 3 m x 3.5 m size, the minimum overall depth of slab to satisfy vertical deflection limits is

50 mm
120 mm
75 mm
100 mm

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Concrete Technology and Design of Concrete Structures
Strength of concrete increases with

increase in water-cement ratio
decrease in size of aggregate
decrease in curing time
increase in fineness of cement

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Concrete Technology and Design of Concrete Structures
The minimum cover to the ties or spirals should not be less than

20 mm
15 mm
50mm
25 mm

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