Details about long column and short column

Column contains the following characteristics :-

1. Columns will undergo only axial vertical compressive loads
2. Columns are generally vertical members in structures
3. Column has length with regard to strut
4. Both ends of column are fixed firmly
5. Generally, columns bear heavy vertical axial compressive loads
6. Normally, cross-sectional dimensions of columns are very large
7. The columns are mostly found in concrete and steel buildings

Types of columns: The columns are generally classified in two groups based on the length and lateral dimensions of columns.

Long column: Long column usually stands for the column in which the ratio of effective length of the column to the minimum lateral dimension of the column is in excess of 12.

1. Some vital features of long column
2. Long columns collapse due to buckling or bending.
3. Euler’s theory is applied for long column.
4. For long column, lateral dimensions are quite small with regards to the length of the column.
5. For long column, slenderness ratio should be in excess 45.
6. For long column, proportion of effective length of the column to the minimum lateral dimension of the column should be in excess of 12.
7. For long column, load bearing strength is decreased when the length of the column is raised.

Short column: Short column fundamentally belongs to the column in which the ratio of effective length of the column to the minimum lateral dimension of the column is under 12.

1. Some vital features of short column
2. Short columns will collapse due to crushing or direct compression.
3. For short column, Rankine’s theory is applied.
4. For short column, lateral dimensions should be quite large with reference to the length of the column.

5. For short column, Slenderness ratio should be under 45.
6. For short column, ratio of effective length of the column to the minimum lateral dimension of the column should be under 12.
7. For short column, load bearing strength will be increased when the length of the column is reduced.

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