RCC STRUCTURES DESIGN QUIZ

The maximum ratio of span to depth of a slab simply supported and spanning in two directions, is

40

25

35

30

TRUE ANSWER : ?
YOUR ANSWER : ?

If T and R are tread and rise respectively of a stair, then

2R + T = 60

2R + T = 30

R + 2T = 60

R + 2T= 30

TRUE ANSWER : ?
YOUR ANSWER : ?

For normal cases, stiffness of a simply supported beam is satisfied if the ratio of its span to its overall depth does not exceed

20

10

25

15

TRUE ANSWER : ?
YOUR ANSWER : ?

[A + (m - 1)ASC] known as equivalent concrete area of R.C.C. is given by

None of these

Load factor method

Ultimate load method

Modular ratio method

TRUE ANSWER : ?
YOUR ANSWER : ?

If the permissible compressive and tensile stresses in a singly reinforced beam are 50 kg/cm² and 1400 kg/cm² respectively and the modular ratio is 18, the percentage area At of the steel required for an economic section, is

0.596 %

0.496 %

0.696 %

0.796 %

TRUE ANSWER : ?
YOUR ANSWER : ?

If the ratio of long and short spans of a two way slab with corners held down is r, the actual reduction of B.M. is given by

(5/6) (r/1 + r²) M

(5/6) (r²/1 + r³) M

(5/6) (r²/1 + r⁴) M

(5/6) (r²/1 + r²) M

TRUE ANSWER : ?
YOUR ANSWER : ?

Spacing of stirrups in a rectangular beam, is

Decreased towards the centre of the beam

Increased at the ends

Kept constant throughout the length

Increased at the centre of the beam

TRUE ANSWER : ?
YOUR ANSWER : ?

The length of the lap in a compression member is kept greater than bar diameter x (Permissible stress in bar / Five times the bond stress) or

24 bar diameters

30 bar diameters

12 bar diameters

18 bar diameters

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YOUR ANSWER : ?

An R.C.C. beam not provided with shear reinforcement may develop cracks in its bottom inclined roughly to the horizontal at

45°

55°

25°

35°

TRUE ANSWER : ?
YOUR ANSWER : ?

The allowable tensile stress in mild steel stirrups, reinforced cement concrete, is

190 kg/cm²

1400 kg/cm²

230 kg/cm²

260 kg/cm²

TRUE ANSWER : ?
YOUR ANSWER : ?

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