Design of Reinforced Concrete structures (3160612) MCQs

MCQs of Building Layout and Design

Showing 31 to 40 out of 106 Questions
31.

The minimum tension reinforcement for 250 mm x 400 mm effective deep beam of Fe500 grade steel is

(a)

150 mm2

(b)

170 mm2

(c)

180 mm2

(d)

120 mm2

Answer:

Option (b)

32.

Why the design of RC over-reinforced section is undesirable?

(a)

It consumes more concrete

(b)

It undergoes high strain

(c)

It fails sudden

(d)

Appearance is not good

Answer:

Option (c)

33.

Under-reinforced concrete beam has a

(a)

Depth of neutral axis is less than limiting depth of neutral axis

(b)

Moment of resistance is less than limiting moment of resistance

(c)

Tensile strain in steel reaches at yield value while maximum compressive strain in concrete is less than its ultimate crushing strain

(d)

All of above

Answer:

Option (d)

34.

An under-reinforced sections are

(a)

Undergo larger deflection at failure

(b)

Fails sudden

(c)

Capable to carry stress reversal

(d)

Less stiffer

Answer:

Option (a)

35.

The limiting moment of resistance of singly reinforced beam of size 200 x 500 mm effective is, consider M20 and Fe 415 material grades

(a)

138 kN-m

(b)

69 kN-m

(c)

90 kN-m

(d)

235.4 kN-m

Answer:

Option (a)

36.

A singly reinforced beam is of width 200 mm. If the factored moment of resistance is 138 kN-m, M20 and Fe415 grade of materials, then effective depth of beam is

(a)

400 mm

(b)

500 mm

(c)

657 mm

(d)

456 mm

Answer:

Option (b)

37.

Doubly R.C beam is considered less economical than singly R.C beam because

(a)

Tensile steel required is more

(b)

Shear reinforcement is more

(c)

Concrete is not stressed to its full value

(d)

Compression steel is under stressed

Answer:

Option (d)

38.

The maximum strain in compression steel of doubly R.C beam is

(a)

0.002 (1 - d',Xu)

(b)

0.0035 (1 - d',Xu)

(c)

0.002

(d)

0.0035

Answer:

Option (b)

39.

The maximum stress in compression steel for mild steel is

(a)

0.87fy

(b)

< 0.87fy

(c)

fy

(d)

0.67fy

Answer:

Option (a)

40.

A doubly reinforced beam is recommended when

(a)

Depth of beam is restricted

(b)

Width of beam is restricted

(c)

Both depth and width are restricted

(d)

Shear is very high

Answer:

Option (a)

Showing 31 to 40 out of 106 Questions