Question

In steel design as per IS 800, following are included in the limit state of serviceability except
1. Fire
2. Corrosion
3. Crack due to fatigue
4. Vibrations in the structure
5. Snow load

Answer 1

Correct Answer - Option 5 : Snow load

Explanation:

Limit state of design:

• In the limit state of design of structures, all conditions are taken into account that makes the structure unfit for use.
• This limit states of the method of design consider all the relevant conditions pertaining to limit states of strength and serviceability.
• The strength limit states are based on the load-carrying capacity of the structure which includes buckling, fatigue, fracture, excessive deformation, etc. Serviceability limit states are based on the performance of the structure under the actual application of service loads and include deflection, vibration, corrosion, ponding, repairable damage, crack due to damage etc.
• The loads at working conditions are factored by the use of partial safety factors for loads resulting in factored loads/design loads.