Design of Structures (3150612) MCQs

MCQs of Limit state design of RC structural Element

Showing 1 to 10 out of 155 Questions
1.

In limit state design, the centroid of compression force from extreme compression fibre lies at distance of

(a)

0.367 Xu

(b)

0.42 Xu

(c)

0.446 Xu

(d)

0.573 Xu

Answer:

Option (b)

2.

In limit state design of concrete for flexure, area of stress block is taken as

(a)

0.36 fck Xu

(b)

0.41 fck Xu

(c)

0.446 fck Xu

(d)

0.53 fck Xu

Answer:

Option (a)

3.

In limit state design of concrete for flexure, the maximum stress at extreme compression fibre is taken as

(a)

0.36 fck 

(b)

0.41 fck 

(c)

0.446 fck 

(d)

0.53 fck 

Answer:

Option (c)

4.

In limit state design, under-reinforced section is one in which

(a)

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

(b)

Maximum tensile stress in steel reaches its permissible value while maximum compressive stress in concrete is less than its permissible value

(c)

Maximum compressive strain in concrete reaches ultimate crushing value while tensile strain in steel is less than its yield value

(d)

Maximum compressive stress in concrete reaches its permissible value while tensile stress in steel is less than its permissible value

Answer:

Option (a)

5.

In limit state design, the limiting value of depth of neutral axis for Fe250 (Mild steel) grade of steel is

(a)

0.53 d

(b)

0.48 d

(c)

0.45 d

(d)

0.43 d

Answer:

Option (a)

6.

The lever arm in limit state design is expressed as

(a)

d-0.446 Xu 

(b)

d-0.87 Xu 

(c)

d-0.36 Xu 

(d)

d-0.42 Xu 

Answer:

Option (d)

7.

The maximum area of tension reinforcement in beams shall not exceed

(a)

0.15%

(b)

1.5%

(c)

4%

(d)

1%

Answer:

Option (c)

8.

Design of R.C.C. simply supported beams carrying U.D.L. is based on the resultant B.M. at

(a)

Supports

(b)

Mid span

(c)

Every section

(d)

Quarter span

Answer:

Option (b)

9.

An Over-reinforced beam fails by

(a)

Crushing of concrete

(b)

Yielding of steel

(c)

Crushing of steel

(d)

None of above

Answer:

Option (a)

10.

Limiting moment of Resistance of R.C. beam for Fe415 grade steel is

(a)

Mulim=0.148 fck bd2

(b)

Mulim=0.138 fck bd2

(c)

Mulim=0.133 fck bd2

(d)

Mulim=0.130 fck bd2

Answer:

Option (b)

Showing 1 to 10 out of 155 Questions