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In the design of pre-stressed concrete structures, which of the following limit states will qualify as limit states will qualify as the limit states of serviceability? 1. Flexural 2. Shear 3. Deflection 4. Cracking 

In the design of pre-stressed concrete structures, which of the following limit states will qualify as limit states will qualify as the limit states of serviceability? 1. Flexural 2. Shear 3. Deflection 4. Cracking  Correct Answer 3 and 4 only 

Limit state of Collapse

Limit State of Serviceability

It considers imaginary behaviour of structure at the time of collapse

It considers actual behaviour of structure under working or service loads.

The various limit state of collapse as per IS 456:2000 are:

1. Flexure

2. Shear

3. Compression

4. Stability

5. Torsion

The various limit state of serviceability as per IS 456:2000 are:

1. Cracking

2. Deflection

3. Corrosion

4. Vibration

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