# Stub Column: Purpose and Applications

A stub column is a type of column whose length is very small and does not connect to the footing directly. So, it does not have a footing or pedestal and relies on a beam or slab to transfer loads. The stub column acts as a point load on a beam on which it rests.

The height of the stub column is very low, which is why buckling failure is rarely observed. It is constructed between different floors, footing and floors to transfer loads and improve the stiffness of the building and create symmetrical load distribution. It is a redundant compression element.

## What are the Applications of Stub Columns?

• A stub column is provided to transfer loads from a beam to footing in case of strap footing.
• It increases the stiffness of a building.
• It creates symmetry in geometry and load distribution in a building. For instance, when a room's span is more or, in the case if the geometry of various floors is not symmetrical.
• It can be used to improve the aesthetic view of a building.
• A stub column may be employed to reduce the deflection of the beam in the case of long-span beams.
• It helps with safe and reliable transfer of loads from one beam to another.

A stub column increases the shear force in a beam on which it is rested, and the beam may fail in shear. So, the beam's cross-section should be increased, which may be uneconomical in certain circumstances.

## FAQs

What is a stub column?

A stub column is a type of column whose length is very small and does not connect to the footing directly. So, it does not have a footing or pedestal, and hence relies on a beam or slab to transfer loads.

How does a stub column act on its support?

The stub column act as a point load on a beam on which it rests.

Why is it difficult for the stub column to fail in buckling?

The height of the stub column is very low, so buckling failure is rarely observed.

What are the common locations of a stub column in a building?

It is constructed between different floors, footing and floors to transfer loads and improve the stiffness of the building and create symmetrical load distribution.

What are the advantages of a stub column?

2. Improves stiffness of a building
3. Creates geometrical symmetry in unsymmetrical floors
4. Improves the aesthetics of a building
5. Reduces deflection

What is the drawback of a stub column?

A stub column increases the shear force in a beam on which it is rested, and the beam may fail in shear. So, the beam's cross-section should be increased, which may be uneconomical in certain circumstances.