CONCRETE TECHNOLOGY AND DESIGN OF CONCRETE STRUCTURES QUIZ

The minimum cover to the ties or spirals should not be less than

20 mm

25 mm

50mm

15 mm

TRUE ANSWER : ?
YOUR ANSWER : ?

Select the incorrect statement for ...

Bleeding can be minimized by adding pozzuolana finer aggregate.

Lean mixes bleed more as compared to rich ones.

Bleeding can be increased by addition of calcium chloride.

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

According to IS : 456- 1978, minimum slenderness ratio for a short column is

more than 24

less than 18

between 18 and 24

less than 12

TRUE ANSWER : ?
YOUR ANSWER : ?

Select the correct statement for

High tensile steel is cheaper than mild steel

Elastic modulus of high tensile steel is more than that of mild steel

Elastic modulus of high tensile steel is nearly the same as that of mild steel

Carbon percentage in high carbon steel is less than that in mild steel

TRUE ANSWER : ?
YOUR ANSWER : ?

A T-shaped retaining wall mainly conssits of

one cantilever

three cantilevers

four cantilevers

two cantilevers

TRUE ANSWER : ?
YOUR ANSWER : ?

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

(i) and (iii)

(i) and (iv)

(ii) and (iii)

(ii) and (iv)

TRUE ANSWER : ?
YOUR ANSWER : ?

If nominal shear stress tv exceeds the design shear strength of concrete xc, the nominal shear reinforcement as per IS : 456-1978 shall be provided for carrying a shear stress equal to

xc

Tv + Tc

xv

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Dead load only

Dead load + live load

Live load + fraction of dead load

Dead load + fraction of live load

TRUE ANSWER : ?
YOUR ANSWER : ?

When shear stress exceeds the permissible limit in a slab, then it is reduced by

Increasing the depth

Providing shear reinforcement

Using thinner bars but more in number

Using high strength steel

TRUE ANSWER : ?
YOUR ANSWER : ?

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

tensile and compressive

both tensile

compressive and tensile

both compressive

TRUE ANSWER : ?
YOUR ANSWER : ?