CONCRETE TECHNOLOGY AND DESIGN OF CONCRETE STRUCTURES QUIZ

The depth of footing for an isolated column is governed byi) maximum bending momentii) shear forceiii) punching shear The correct answer is

(i), (ii) and (iii)

only (i)

(i) and (ii)

(i) and (iii)

TRUE ANSWER : ?
YOUR ANSWER : ?

Sinking of an intermediate support of a continuous beam<br/>i) reduces the negative moment at support<br/>ii) increases the negative moment at support<br/>iii) reduces the positive moment at center of span<br/>iv) increases the positive moment at center of span<br/>The correct answer is

(i) and (iii)

(ii) and (iii)

(i) and (iv)

(ii) and (iv)

TRUE ANSWER : ?
YOUR ANSWER : ?

Select the incorrect statement for ...

Lean mixes bleed more as compared to rich ones.

Bleeding can be minimized by adding pozzuolana finer aggregate.

None of these

Bleeding can be increased by addition of calcium chloride.

TRUE ANSWER : ?
YOUR ANSWER : ?

As compared to ordinary portland cement, use of pozzuolanic cement

increases shrinkage

increases strength

reduces workability

increases bleeding

TRUE ANSWER : ?
YOUR ANSWER : ?

The ratio of the diameter of reinforcing bars and the slab thickness is

1/6

1/5

1/4

1/8

TRUE ANSWER : ?
YOUR ANSWER : ?

In counterfort type retaining wallsi) the vertical slab is designed as a continuous slabii) the heel slab is designed as a continuous slabiii) the vertical slab is designed as a cantileveriv) the heel slab is designed as a cantileverThe correct answer is

(iii) and (iv)

(i) and (ii)

(ii) and (iii)

(i) and (iv)

TRUE ANSWER : ?
YOUR ANSWER : ?

The approximate value of the ratio between direct tensile strength and flexural strength is

0.33

0.75

1

0.5

TRUE ANSWER : ?
YOUR ANSWER : ?

To minimize the effect of differential settlement, the area of a footing should be designed for

Live load + fraction of dead load

Dead load only

Dead load + fraction of live load

Dead load + live load

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 greater than 1

is always less than 1

can be more than 1

can be less than 1

TRUE ANSWER : ?
YOUR ANSWER : ?

The limits of percentage p of the longitudinal reinforce-ment in a column is given by

0.8% to 8%

0.15% to 2%

0.8% to 6%

0.8% to 4%

TRUE ANSWER : ?
YOUR ANSWER : ?

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