Correct option is C
The
Strong-column Weak-beam concept is a fundamental principle in structural design, especially in seismic design. The idea is that the columns should be stronger than the beams in a building structure. This approach ensures that in the event of extreme loading, such as during an earthquake, the beams will yield before the columns, allowing the structure to absorb energy and deform safely while preventing a collapse.
If the beams fail (yield) before the columns, the structure has a better chance of redistributing loads and maintaining overall stability. On the other hand, if the columns were weaker than the beams, the failure of columns could lead to a progressive collapse, which is far more dangerous.
Explanation of other options:
Partial Weak column-beam: This is not a recognized design concept and would not provide sufficient safety.
Equally Strong column-beam: While this could provide some balance, the preferred approach is for columns to be stronger than beams to prevent catastrophic failure.
Weak-column Strong-beam: This design philosophy would lead to a higher risk of column failure, resulting in structural collapse.
Thus, the correct answer is
(c) Strong-column Weak-beam.
