CONCRETE TECHNOLOGY AND DESIGN OF CONCRETE STRUCTURES QUIZ

If the storey height is equal to length of RCC wall, the percentage increase in strength is

30

10

20

TRUE ANSWER : ?
YOUR ANSWER : ?

Strength of concrete increases with

increase in water-cement ratio

decrease in curing time

decrease in size of aggregate

increase in fineness of cement

TRUE ANSWER : ?
YOUR ANSWER : ?

Minimum grade of concrete to be used in reinforced concrete as per IS:456-1978 is

M20

M10

M25

M15

TRUE ANSWER : ?
YOUR ANSWER : ?

In a ring beam subjected to uniformly distributed load<br/>i) shear force at mid span is zero<br/>ii) shear force at mid span is maximum<br/>iii) torsion at mid span is zero<br/>iv) torsion at mid span is maximum<br/>The correct answer is

(i) and (iv)

(ii) and (iii)

(i) and (iii)

(ii) and (iv)

TRUE ANSWER : ?
YOUR ANSWER : ?

In the design of a front counterfort in a counterfort retaining wall, the main reinforcement is provided oni) bottom face near counterfortii) top face near counterfortiii) bottom face near centre of spaniv) top face near centre of span The correct answer is

only (ii)

both (ii) and (iii)

only (i)

both (i) and (iv)

TRUE ANSWER : ?
YOUR ANSWER : ?

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

is always less than 1

can be less than 1

can be more than 1

is always greater than 1

TRUE ANSWER : ?
YOUR ANSWER : ?

Critical section for shear in case of flat slabs is at a distance of

at the periphery of column

d/2 from periphery of column/capital/ drop panel

at the drop panel of slab

effective depth of slab from periphery of column/drop panel

TRUE ANSWER : ?
YOUR ANSWER : ?

In symmetrically reinforced sections, shrinkage stresses in concrete and steel are respectively

both compressive

both tensile

tensile and compressive

compressive and tensile

TRUE ANSWER : ?
YOUR ANSWER : ?

Ultimate strength of cold drawn high steel wires

increases with increase in diameter of bar

does not depend on diameter of bar

decreases with increase in diameter of bar

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Approximate value of shrinkage strain in concrete, is

0.0003

3.0E-5

0.03

0.003

TRUE ANSWER : ?
YOUR ANSWER : ?

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