Types of Columns

Column is a vertical structural member that carry loads mainly in compression. They transfer the loads from slab, beam to the foundation safely.

There are several types of columns which are used in different parts of structures.

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Types of Columns in Building Construction

Columns are categorized based on following conditions

  1. Types of reinforcement
  2. Slenderness ratio
  3. Load Position
  4. Shape
  5. Construction material

1- Based on Types of Reinforcement

a- Tied Column

In this type of column, Longitudinal reinforcement are confined within closely spaced tie reinforcement. This type of column accounts 95% of columns used in building construction.

Column Design

b- Spiral Reinforcement

In this type, longitudinal bars are confined within closely spaced and continuously wound spiral reinforcement. This type of reinforcement provides extra confinement to concrete and delays in column failure.

Column Design

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Based on Slenderness Ratio

a- Short Columns

If the ratio effective length of the column to the least lateral dimension is less than 12, the column is called as the short column. A short column fails by crushing (pure compression failure).

Difference Between Short Column and Long Column | What Is Column ...

b- Long Column

If the ratio effective length of the column to the least lateral dimension exceeds 12, it is called as long column. A long column fails by bending or buckling.

Based on Load Position

a- Axially Loaded Column

These types of columns fails in pure compression at ultimate load. But this is very rare case as it is difficult to apply load exact at center of gravity of column.Interior column of multi-storey buildings with symmetrical loads from floor slabs from all sides is an example of this type of column.

b- Eccentric Load Column

In this type of column, the load acts either on X or Y axis (Uni-axial load column) or neither on any axis (Bi-axial loaded column). Edge column and corner column are best example of it.

How to calculate bricks and cement quantity for brickwork?

How to calculate bricks and cement quantity for brick work?

For rate analysis and cost estimation purposes. calculation of quantity of nos of bricks and cement is generally required as per size of available bricks, ratio of mortar that will be used and workmanship factors.
This video helps you to calculate nos of brick, quantity of mortar, quantity of cement and quantity of sand for one cum of brick work.

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How to Calculate Steel Weight by Formula?

In construction field, steel formulas are commonly used to calculate steel quantity for estimation and also for billing purposes. So, it is important for all civil engineers specially quantity surveyors to know how to calculate steel weight by formulas?

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What is Caisson Foundation?

What is Caisson Foundation?

Caisson are the structures that made up of wood, steel or reinforced concrete built above the ground level and then sunken into the ground.

Caisson foundation is most often used in the construction of bridge piers & other structures that require foundation beneath rivers & other bodies of water. This is because caissons can be floated to the job site and sunk into place.
There are several types of caisson foundation.
* Box Caissons
* Excavated Caissons
* Floating Caissons
* Open Caissons
* Pneumatic Caissons
* Compressed Air Caissons
* Monolithic Caissons
Watch the full video and if you like, please hit like.

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