STEEL FRAMED STRUCTURESSTEEL FRAMED STRUCTURES

• Steel is a material which has excellent structural properties.

• It has high strength in tension and compression.

• It is the strongest of the commonly used structural materials, being approximately 20 times stronger than timber and 10 times stronger than concrete.

• It is therefore used to make the tallest buildings and the enclosures with the longest spans.

Steel Skeleton Frame Structures

The Factors Which Affect the Decision to Select Steel as a Structural Material

• The aesthetics of steel

• The technical performance of steel as a structural material

Advantages of Steel

• Strength

• Ratio of Strength to weight

• Quality Control

• Appearance

• Prefabrication

• Speed of Erection

Disadvantages of Steel

• Weight

• Cost

• Durability

• Performance in Fire

STEEL FRAMED FLOORS

STEEL SECTIONSSTEEL SECTIONS• The steel sections most used in structural steelwork are

standard hot rolled steel universal beams and columns together with a range of tees, channels and angles.

Structural Hallow Sections

STEELWORK CONNECTIONS METHODS

• Generaly there are two main types of connection methods:

- Bolted Connections

- Welded Connections

Bolts

Welding• The word welding

describes the operation of running molten weld metal into the heated junction of steel plates or members so that when the weld metal has cooled and solidified it strongly binds them together.

STEELWORK CONNECTIONS

Connections between the members of a steel frame which made with angle section seating or shelf cleats

Connection of Column to Foundation

Connection to Hallow Section Columns

Welded Connections