Podcast
Questions and Answers
What happens when columns are subjected to a high axial load without any cracking?
What happens when columns are subjected to a high axial load without any cracking?
- Concrete sections are subjected to eccentric compression.
- Normal force is outside the cross section.
- Vertical cracks appear with concrete cover failure. (correct)
- Far side of the section is subjected to compression.
Why are columns designed with a higher safety factor compared to beams?
Why are columns designed with a higher safety factor compared to beams?
- To avoid sudden collapse. (correct)
- To ensure the far side of the section is subjected to tension.
- To prevent brittle failure mode.
- To reduce eccentricity of the load.
What happens when Mu is relatively small compared to Pu in an eccentrically loaded column?
What happens when Mu is relatively small compared to Pu in an eccentrically loaded column?
- The section will be subjected to a big eccentricity.
- The section will be subjected to a small eccentricity. (correct)
- Bending behavior will dominate.
- The near side of the section will be subjected to tension.
What does the interaction diagram of a reinforced concrete cross section represent?
What does the interaction diagram of a reinforced concrete cross section represent?
In a biaxially loaded column, what happens if Mu is large?
In a biaxially loaded column, what happens if Mu is large?
Why are interaction diagrams useful in studying column strengths?
Why are interaction diagrams useful in studying column strengths?
What is the purpose of adding lateral reinforcement or ties to reinforced concrete columns?
What is the purpose of adding lateral reinforcement or ties to reinforced concrete columns?
How are reinforced concrete columns classified based on lateral confinement?
How are reinforced concrete columns classified based on lateral confinement?
What is the key reason for providing a minimum longitudinal reinforcement ratio in reinforced concrete columns?
What is the key reason for providing a minimum longitudinal reinforcement ratio in reinforced concrete columns?
Why do tied columns usually fail with spalling of the concrete cover followed by bar buckling?
Why do tied columns usually fail with spalling of the concrete cover followed by bar buckling?
What is a distinguishing feature between short and long reinforced concrete columns?
What is a distinguishing feature between short and long reinforced concrete columns?
How would you characterize the failure of axially loaded reinforced concrete columns?
How would you characterize the failure of axially loaded reinforced concrete columns?
