INTRODUCTION

Generally referred to a vertical

compression member supporting floors

and/or roof in structural frames.

Subjected to axial and bending effects.

Axial Load

Wind

Load

Moment

Square Hollow Section

Circular Hollow Section

Universal

Column

Built-up section

COLUMN FAILURE MODES

PROCEDURES

1 Determine beams and columns.

2 Label the grid line.

3 Draw the load distribution profile.

4

Determine the value of Permanent actions (Gk) and Variable

actions (Qk).

5

Calculate shear force (R) for each beam.

A B C D E

1

2

3

4

4000 mm 4000 mm 4000 mm 4000 mm

2000 mm

5000 mm

2000 mm

BATH BATH BATH BATH

MOTEL

MOTEL

MOTEL

MOTEL

PORCH

PORCH

PORCH

PORCH

Beam 1/A-B

Beam A/1-2

Beam A/1-2

Beam 2/A-B

Beam A/2-3

Beam B/1-2

Beam 2/B-C

Beam 2/A-B

Beam B/2-3

NED = R1 + R2 + R3 + ..

Ncr = 2 E I

Lcr2