Steel Design Sheet 38

1) Question.

Horizontal stiffeners in plate girders are used to
Answer.
- 1
  
  increase the bending strength of web
- 2
  
  increase the shear capacity of the web
- 3
  
  prevent local buckling of the web
- 4
  
  prevent local buckling of the flange
Answer: 3

Explanation:
2) Question.

At least one horizontal stiffener should be placed in the plate girder in which the thickness of the web is less than
Answer.
- 1
  
  d/200
- 2
  
  d/100
- 3
  
  d/60
- 4
  
  d/4
Answer: 1

Explanation:
3) Question.

Intermediate vertical stiffeners in plate girders need to be provided if the depth of the web exceeds

[where, $t_{w}$ = Thickness of the web]
Answer.
- 1
  
  $50 t_{w}$
- 2
  
  $85 t_{w}$
- 3
  
  $125 t_{w}$
- 4
  
  $175 t_{w}$
Answer: 2

Explanation:
4) Question.

Gantry girders are designed to resist
Answer.
- 1
  
  lateral load
- 2
  
  longitudinal loads
- 3
  
  lateral and longitudinal loads
- 4
  
  lateral, longitudinal and vertical loads
Answer: 4

Explanation:
5) Question.

Vertical stiffeners in plate girders are provided
Answer.
- 1
  
  to increase bearing strength of web
- 2
  
  to prevent local buckling of the flange
- 3
  
  to prevent local buckling of the web
- 4
  
  none of these
Answer: 3

Explanation:
6) Question.

The area of cover plates in one flange $(A_{P})$ of a built-up beam is given by

[where, Z= Required section modulus of the rolled beam section, $Z_{1}$ = Section modulus of the rolled beam section, and d= Distance between the centroids of the top and bottom flange plates.]
Answer.
- 1
  
  $A_{P} = \frac{Z + Z_{1}}{d}$
- 2
  
  $A_{P} = \frac{Z - Z_{1}}{d}$
- 3
  
  $A_{P} = \frac{Z \times Z_{1}}{d}$
- 4
  
  $A_{P} = \frac{Z \times d}{Z_{1}}$
Answer: 2

Explanation:
7) Question.

The load on a lintel is considered as uniformly distributed load, if the masonry above the lintel is upto a height of
Answer.
- 1
  
  0.5 times the effective span
- 2
  
  0.75 times the effective span
- 3
  
  1.25 times the effective span
- 4
  
  1.50 times the effective span
Answer: 3

Explanation:
8) Question.

In the riveted built-up beams, an allowance of about.... of the area of cover plates is added to the calculated area.
Answer.
- 1
  
  10%
- 2
  
  15%
- 3
  
  20%
- 4
  
  25%
Answer: 1

Explanation:
9) Question.

Web crippling occurs due to
Answer.
- 1
  
  column action of web
- 2
  
  failure of web under concentrated load
- 3
  
  excessive bending moment
- 4
  
  secondary bending moment
Answer: 2

Explanation:
10) Question.

The slenderness ratio for the portion of web acting as a column, when the top flange is held in position only while the bottom flange is restrained against lateral displacement and rotation, is equal to
Answer.
- 1
  
  $\frac{h}{t_{w}}$
- 2
  
  $\frac{\sqrt{3} h}{t_{w}}$
- 3
  
  $\frac{\sqrt{5} h}{t_{w}}$
- 4
  
  $\frac{\sqrt{6} h}{t_{w}}$
Answer: 4

Explanation:

Question Pallet

Time Left -