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Concrete Technology and Design of Concrete Structures

Concrete Technology and Design of Concrete Structures
According to Whitney’s theory, ultimate strain of concrete is assumed to be

0.5%
0.3%
0.4%
0.6%

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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

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

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Concrete Technology and Design of Concrete Structures
A T-shaped retaining wall mainly conssits of

four cantilevers
two cantilevers
one cantilever
three cantilevers

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Concrete Technology and Design of Concrete Structures
For a simply supported beam of span 15m, the minimum effective depth to satisfy the vertical deflection limits should be

600 mm
more than 1 m
750 mm
900 mm

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

retarders
workability admixtures
accelerators
air entraining agents

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

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