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Concrete Technology and Design of Concrete Structures

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

200 mm
150 mm
250 mm
100 mm

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Concrete Technology and Design of Concrete Structures
The slab is designed as one way if the ratio of long span to short span is

greater than 2
less than 1
between 1 and 1.5
between 1.5 and 2

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Concrete Technology and Design of Concrete Structures
The property of the ingredients to separate from each other while placing the concrete is called

segregation
bulking
shrinkage
compaction

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Concrete Technology and Design of Concrete Structures
The average permissible stress in bond for plain bars in tension is

increased by 25% for bars in compression
decreased by 25% for bars in compression
increased by 10% for bars in compression
decreased by 10% for bars in compression

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

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

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Concrete Technology and Design of Concrete Structures
Finer grinding of cement

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

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