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Concrete Technology and Design of Concrete Structures

Concrete Technology and Design of Concrete Structures
Workability of concrete is inversely proportional to

vater-cement ratio
time of transit
size of aggregate
the air in the mix

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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
32 liters
30 liters

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Concrete Technology and Design of Concrete Structures
In reinforced concrete footing on soil, the minimum thickness at edge should not be less than

250 mm
150 mm
200 mm
100 mm

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Concrete Technology and Design of Concrete Structures
In order to obtain the best workability of concrete, the preferred shape of aggregate is

rounded
All of these
elongated
angular

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Concrete Technology and Design of Concrete Structures
For a longitudinal reinforcing bar in a column, the minimum cover shall neither be less than the diameter of bar nor less than

50 mm
60 mm
45mm
40 mm

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Concrete Technology and Design of Concrete Structures
For a slab supported on its four edges with corners held down and loaded uniformly, the Marcus correction factor to the moments obtained by Grashoff Rankine’s theory

can be more than 1
is always greater than 1
is always less than 1
can be less than 1

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