Load carrying capacity of helically reinforced column as compared to a tied column:

Introduction:
The load carrying capacity of a column is directly related to its strength and stiffness. Columns can be reinforced in various ways to increase their strength and stiffness. Helical reinforcement is one such method that is used to increase the load carrying capacity of columns.

Helical reinforcement in columns:
Helical reinforcement involves wrapping a helical reinforcement around the column. This reinforcement is made up of a continuous steel bar that is bent into a helix shape. The helix is then wrapped around the column at a certain pitch. The pitch of the helix determines the spacing of the reinforcement.

Tied columns:
A tied column is a type of column that is reinforced with vertical ties. These ties are made up of steel bars that are placed at regular intervals along the length of the column. The ties are tied together at the top and bottom of the column to form a cage-like structure.

Load carrying capacity:
The load carrying capacity of a column depends on its strength and stiffness. Helical reinforcement increases the strength and stiffness of a column by providing a continuous reinforcement around the column. This reinforcement helps to distribute the load evenly across the column and prevent it from buckling.

The load carrying capacity of a helically reinforced column is about 5% more than that of a tied column. This is because helical reinforcement provides a continuous reinforcement around the column, which increases its strength and stiffness. Tied columns, on the other hand, have discrete reinforcement in the form of ties, which may not distribute the load evenly across the column.

Conclusion:
Helical reinforcement is an effective method of increasing the load carrying capacity of columns. It provides a continuous reinforcement around the column, which increases its strength and stiffness. The load carrying capacity of a helically reinforced column is about 5% more than that of a tied column.