INTRODUCTION: COLUMN : Column is a vertica l member which is subjected to Axial compression load. TYPES OF COLUMNS: 1. ACCORDING TO MATERIAL: a) Post : A wooden member which is subjected to axial compressive loads is called a post. b) Stanchion : A built-up structural steel member which is subjected to axial compressive loads is called a Stanchion. c) Boom : The main compressive member in a jib crane is known as Boom. d) Strut : An inclined steel member which is subjected to compressive forces is called as a Strut. 2. ACCORDING TO SLENDERNESS RATIO: a) Long Column : A column whose slenderness ratio is greater then 120, then it is called a Long Column. b) Short Column : A column whose slenderness ratio is less than 32, then it is called a Short Column. c) Intermediate (or) Medium Column : A column whose slenderness ratio is in between 32 & 120, then it is called a Medium Column. 3. ACCORDING TO LOADING CONDITION: a) Axial Column : If the load acting on the column exactly passes thr