What is the definition of a long column?

October 31, 2019 Off By idswater

What is the definition of a long column?

: a column so slender that it will fail under longitudinal load by bending rather than by crushing and typically having a length of 20 to 30 times the diameter.

How do you determine if a column is short or slender?

A column is considered to be a slender if its cross sectional dimension is small compared to its length. The moment and axial load obtained from first order analysis is sufficient to design short column. The secondary moment/lateral deflection is very low which can be neglected.

What is the criterion for the column to consider as short and long column?

A column may be considered to be short when its effective length does not exceed 12 times the least lateral dimension. If the ratio of effective length to least lateral dimension exceeds 12, the column is considered as long or slender for design purposes.

How long is a column?

In the United States, a common newspaper column measurement is about 11 picas wide —about 1.83 inches (46 mm)—though this measure varies from paper to paper and in other countries.

How do you identify a long column?

If the ratio of effective length to its least lateral dimension is less than or equal to 12 then it is called short column. If the ratio of the effective length of the column to its least lateral dimension is greater than 12 then it is called a long column.

What is the effective length of a column?

Structurally effective length of column is defined as height between the points of contraflexure of the buckled column i.e. between two floors basically.

What is a column give the classification of column?

A column may be classified based on different criteria such as: A column is defined as a compression member, the effective length of which exceeds three times the least lateral dimension. A column forms a very important component of a structure. Columns support beams which in turn support walls and slabs.

How do you classify a column?

Columns are classified based on different criteria such as:

  1. Shape of cross section.
  2. Material of construction.
  3. Type of loading.
  4. Slenderness ratio.
  5. Type of lateral reinforcement.

How do you find a short column?

A short column is the one whose ratio of effective length to its least lateral dimension is less than or equal to 12. Then it is termed as a short column.