Different Types of columns are used in the vertical structural member that can carry compressive forces. It is responsible for transferring the loads from slabs to the beam to the foundation. Therefore, the column is an essential structural member of the building; without the queue, you cannot construct an RCC building or structure (Strong). Additional loads from the snow, wind and other horizontal forces can cause the column to bend. Columns can also carry primary axial loads and are designed for compression. Before going into the detail of columns types, lets clear the following concepts first,
Buckling is also known as a failure in the column due to compressive action on the structural member or element.
The sudden significant failure or deformation of the structure due to a slight increase of an existing load under which the design has exhibited little.
According to the RCC column, the columns are classified into different types, according to load, and based on lengths, so let’s jump into the detail.
Types of columns:
We differentiated the RCC column according to the,
Members reinforced with the longitudinal bars and lateral ties.
Member reinforced with the longitudinal bars and the continuous spirals.
Composite compression member reinforced with structural steel shapes, pipe, and with or without longitudinal bars and lateral reinforcements.
The main types are,
1: Tied columns
The column in which the lateral ties are closely spaced throughout the column.
The spacing of ties is limited and close enough to prevent barrelling failures and far enough not to interface the setting of concrete.
According to ACI 7.10.5: The ties’ vertical spacing must be between 16D ofthe longitudinal bar (D is the diameter of the bar) and 48D from the diameter of the link.
If the spacing of the ties is too far, the column then may face a shear failure.
2: Spiral columns
Are those columns in which the winding bar is wrapping around the column longitudinal reinforcements.
The spirals around the column provide support and prevent the column from barreling.