SM- Day 23- Columns and Strut

A strut is a structural member carrying

• Tension

• Shear

• Compression

• None

Slenderness ratio is the ratio of

• Length of column to radius of gyration

• Effective length of column to least radius of gyration

• Effective length of column to least moment of inertia

• Length of column to least radius of gyration

Failing of a very long column is essentially by

• A.Crushing

• B.Buckling

• Both (A) and (B)

• None

A column is said to have failed when it reaches

• Unstable equilibrium

• Stable equilibrium

• Neutral equilibrium

• Plastic equilibrium

Buckling load of a long column given by Euler's formula does not depend on

• Elastic property of material

• Strength of column material

• Cross sectional properties

• The end conditions

Effective length of column is basically

• A.the distance between the inflation points

• B. Distance between hinges, if any

• Both A and B

• None of the above

If the length of a column is doubled, the critical load becomes

• 1/2 of the original value

• 1/4 of the original value

• 1/8 of the original value

• 1/16 of the original value

Ratio of buckling load of a column fixed at both ends to that of a column fixed at one end and free at other end is

• 2

• 4

• 8

• 16

Short columns fail by

• Buckling

• Bending

• Crushing

• Crippling

Eulers formula is not valid for mild steel columns when slenderness ratio is

• More than 100

• Less than 100

• Less than 80

• More than 80