The document discusses the two main types of column failures: compression failure and buckling failure. Compression failure occurs when the axially loaded stress of a column exceeds its allowable stress. Buckling failure happens when a column's slenderness ratio is greater than 30, causing it to buckle under lateral loads. The document is intended to explain why columns fail and describe the types of column failures in terms of their causes and visual appearances.

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2. TYPES OF COLUMN
FAILURES
BY: SYED RAJA

3. WHY COLUMNS FAIL:
 We know, Columns are made up of two major materials
concrete and steel. Architect do calculate total stress caused
by dead load and live load on the entire building to design its
internal components (Beam, Column, Slab etc.). So, if the
applied stress exceeds the allowable stress then the
structure start to fail.

4. TYPES OF COLUMN
FAILURE
 COMPRESSION FAILURE
 BUCKLING FAILURE

5. 1. COMPRESSION
FAILURE:
 when the axially loaded stress of a column exceeds its
allowable stress then column start to fail. This type of
failure is known as Compression failure.
As shown in the picture….

7. 2. BUCKLING FAILURE:
 If the least lateral dimension of a column is grater than 12, and
its slenderness ratio is grater than 30, then in such conditions
columns start to buckling. This type of failure are known as
Buckling failure.
As, shown in the picture…

9. THE END