Question

For the conjugate beam method to be applicable, which of the following rules is not followed 
1. The original beam must be statically determinate
2. The conjugate beam and original beam must be made the same length
3. The conjugate beam must be static equilibrium
4. No other loading should be applied to the conjugate beam other than the elastic weight
5. The maximum indeterminacy can be upto 5 degree

Answer 1

Correct Answer - Option 5 : The maximum indeterminacy can be upto 5 degree

Explanation:

Properties of conjugate beam method:

• The length of a conjugate beam is always equal to the length of the actual beam.
• The load on the conjugate beam is the M/EI diagram of the loads on the actual beam.
• A simple support for the real beam remains simple support for the conjugate beam.
• A fixed end for the real beam becomes free end for the conjugate beam.
• The point of zero shear force for the conjugate beam corresponds to a point of zero slope for the real beam.
• The point of maximum moment for the conjugate beam corresponds to a point of maximum deflection for the real beam.
• The conjugate beam must be satisfied static equilibrium condition.
• No other loading should be applied to the conjugate beam other than the elastic weight.
• The original beam (Real beam) must be statically determinate.