Concrete Technology and Design of Concrete Structures
According to IS : 456-1978, the fiexural strength of concrete is

directly proportional to square root of compressive strength
directly proportional to compressive strength
inversely proportional to square root of compressive strength
inversely proportional to compressive strength

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Concrete Technology and Design of Concrete Structures
If the foundations of all the columns of a structure are designed on the total live and dead load basis, then

the settlement of interior columns will be more than exterior columns
there will be no settlement of columns
there will be no differential settlement
the settlement of exterior columns will be more than interior columns

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Concrete Technology and Design of Concrete Structures
Due to circumferential action of the spiral in a spirally reinforced column

Ductility of column reduces
Capacity of column is decreased but ductility of column increases
Both the capacity of column and ductility of column increase
Capacity of column is decreased

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