Concrete Technology and Design of Concrete Structures
The diameter of ties in a column should be

More than or equal to one fourth of diameter of main bar
More than 5 mm and also more than one-fourth of diameter of main bar
More than or equal to 5 mm
More than 5 mm but less than one-fourth of diameter of main bar

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Concrete Technology and Design of Concrete Structures
The critical section for finding maximum bending moment for footing under masonry wall is located

at the edge of the wall
halfway between the middle and edge of the wall
at a distance equal to effective depth of footing from the edge of the wall
at the middle of the wall

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Concrete Technology and Design of Concrete Structures
Stress strain curve of high tensile steel

has a definite yield point
does not show definite yield point but yield point is defined by 0.2% proof stress
does not show definite yield point but yield point is defined by 2% proof stress,
does not show definite yield point but yield point is defined by 0.1% proof stress

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