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Concrete Technology and Design of Concrete Structures

Concrete Technology and Design of Concrete Structures
The maximum value of hoop compression in a dome is given by (where, w = load per unit area of surface of dome R = radius of curvature d = thickness of dome)

wR / 4d
2wR/d
wR/2d
wR/d

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Concrete Technology and Design of Concrete Structures
A continuous beam is deemed to be a deep beam when the ratio of effective span to overall depth (1/D) is less than

2.5
3.5
5.5
4.5

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Concrete Technology and Design of Concrete Structures
Maximum quantity of water needed per 50 kg of cement for M 15 grade of concrete is

34 liters
28 liters
30 liters
32 liters

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Concrete Technology and Design of Concrete Structures
The approximate value of the ratio between direct tensile strength and flexural strength is

0.33
0.75
0.5
1

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Concrete Technology and Design of Concrete Structures
For a reinforced concrete section, the shape of shear stress diagram is

wholly parabolic
wholly rectangular
rectangular above neutral axis and parabolic below neutral axis
parabolic above neutral axis and rectangular below neutral axis

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Concrete Technology and Design of Concrete Structures
Sinking of an intermediate support of a continuous beami) reduces the negative moment at supportii) increases the negative moment at supportiii) reduces the positive moment at center of spaniv) increases the positive moment at center of span The correct answer is

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

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