short column and long column
What is a Column, Short Column, Long Column
Column:
A column is a vertical compression member. A column is subjected to axial compressive loads.
When the ratio of effective length to the least lateral dimensions of the column is less than 12, then it is called a short column.
(or)
When the ratio of effective length to the least radius of gyration is less than 45, then it is called a short column.
Long Column:
When the ratio of effective length to the least radius of gyration is greater than 45, then it is called a long column.
A long column is subjected to bending moment in addition to direct compressive stress.
The load carrying capacity of a long column is less than a short column.
The load carrying capacity of a long column depends upon slenderness ratio (slenderness ratio increases then the capacity of the column decreases).