1. STEEL 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.

2. Steel Skeleton Frame Structures

3. 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

4. Advantages of Steel Strength Ratio of Strength to weight Quality Control Appearance Prefabrication Speed of Erection

5. Disadvantages of Steel Weight Cost Durability Performance in Fire

6. STEEL FRAMED FLOORS

7. STEEL 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.

10. Structural Hallow Sections

11. STEELWORK CONNECTIONS METHODS Generaly there are two main types of connection methods: - Bolted Connections - Welded Connections

12. Bolts

13. 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.

14. STEELWORK CONNECTIONS

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

19. Connection of Column to Foundation

21. Connection to Hallow Section Columns

22. Welded Connections