Which of the following types of failures occur in the beam-column connections?

1. Failure by lateral-torsional buckling

2. Failure by combined instability in both the principal directions

3. Failure by combined twisting and bending on the torsionally weak sections

4. Failure by combined twisting and bending when plane of bending does not contain the shear centre

This question was previously asked in

ESE Civil 2020: Official Paper

Option 2 : 1, 3 and 4 only

CT 3: Building Materials

3014

10 Questions
20 Marks
12 Mins

__Concept:__

A beam column connection can be subjected to either axial load or bending (both uniaxial and biaxial) or torsion or any combination of these. Hence, there exists several failure mechanism of beam column connection. Generally, the following mechanism is likely to be the mode of failure:

**Axial compression and bending about one axis:**Failure by instability in the plane of bending without twisting.**Axial compression and bending about the strong axis**: Failure by lateral-torsional buckling.**Axial compression and biaxial bending (torsionally stiff sections):**Failure by instability in one of the principal directions.**Axial compression and biaxial bending (thin walled sections)**: Failure by combined twisting and bending on these torsionally weak sections.**Axial compression, biaxial bending, and torsion:**Failure by combined twisting and bending when plane of bending does not contain the shear centre.

∴ Statement 2 is wrong.