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.Management Sciences
Category: Design of Concrete Structures
Stress strain curve of high tensile steel_______________?
A. has a definite yield point
B. does not show definite yield point but yield point is defined by 0.1% proof stress
C. does not show definite yield point but yield point is defined by 0.2% proof stress
D. does not show definite yield point but yield point is defined by 2% proof stress
In reinforced concrete footing on soil, the minimum thickness at edge should not be less than______________?
A. 100 mm
B. 150 mm
C. 200 mm
D. 250 mm
According to ISI recommendations, the maximum depth of stress block for balanced section of a beam of effective depth d is__________________?
A. 0.43 d
B. 0.55 d
C. 0.68 d
D. 0.85 d
In case of hand mixing of concrete, the extra cement to be added is__________________?
A. 5%
B. 10%
C. 15%
D. 20%
As per Whitney’s theory, the maximum moment of resistance of the balanced section of a beam of width b and effective depth d is given by_______________?
A. ^acybd2
B. ^acybd2
C. 0.185acybd2
D. 0.43acybd2
where acy is the cylinder compressive strength of concrete
In a spherical dome subjected to concentrated load at crown or uniformly distributed load, the meridional force is always________________?
A. zero
B. tensile
C. compressive
D. tensile or compressive
The average permissible stress in bond for plain bars in tension is_______________?
A. increased by 10% for bars in compression
B. increased by 25% for bars in compression
C. decreased by 10% for bars in compression
D. decreased by 25% for bars in compression
Critical section for shear in case of flat slabs is at a distance of_______________?
A. effective depth of slab from periphery of column/drop panel
B. d/2 from periphery of column/capital/ drop panel
C. at the drop panel of slab
D. at the periphery of column
Strength of concrete increases with________________?
A. increase in water-cement ratio
B. increase in fineness of cement
C. decrease in curing time
D. decrease in size of aggregate
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