Columns Flashcards
What is axial loading or concentric loading?
If a load is applied through the centroid of a tension or compression member’s cross section.
What is eccentric loading?
When the load is not applied through the centroid.
What is the eccentricity?
The distance from the neutral axis to the applied to force.
What does an axial member loaded eccentrically experience?
It bends and will experience bending stress in the same manner as a beam.
Why is an axial member loaded eccentrically known as a beam column?
The member experiences both axial stress and bending stress.
In what orientation can a member be a beam column?
In either the vertical or horizontal direction.
In what direction are the axial and bending stresses oriented in a beam column?
Both the axial and bending stresses are normal stresses oriented in the same direction.
Can the axial and bending stresses be added in a beam column?
Yes
Can a column, loaded with an eccentric compressive load experience tension?
Yes
When will the tension exist in a column, loaded with an eccentric compressive load?
When the bending stress is larger than the axial stress.
Why is tension important to monitor in columns?
Columns are usually made out of concrete or materials that do not support tension stresses well.
What would cause the column, loaded with an eccentric compressive load to not experience tension?
If the eccentricity is low enough.
What is the core, or kern or kernel?
The area formed from the middle third of the centroidal axis.
Why is the core, or kern or kernel important?
If a compressive load is kept within this area the column will not experience enough tension for it to fail.
How do short columns usually fail?
By crushing.
