l01 introduction kaea3218

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Dr. Meldi SuhatrilDepartment of Civil Engineering,

Faculty of Engineering, University of Malaya.

STRUCTURAL STEEL DESIGN (KAEA 3218)

- Introduction-

Steel Structures can be divided into 3 categories:

Framed structures-E.g. Multistory buildingsConsists of beams and columns, either rigidly or with simple connection, With diagonal bracing to provide stability- E.g.Industrial buildingLong span truss, lattice girder, Column-free structure- E.g.BridgesBeams and plate girder or trusses

Introduction

1.0. INTRODUCTION

• Tyoe of Steel Structures

- Frame

- Shell

- Suspension

• Advantages

- Speed of Execusion

- Lightness & Strength

- Adaptibility

- Quality

• Structural Element

Shell-type structures- E.g.water tank, storage bins

Suspension-type structuresTension cables are major supporting elementsE.g. suspension bridge

Introduction

1.0. INTRODUCTION


- Frame

- Shell

- Suspension

• Advantages



- Adaptibility

- Quality


1. Speed of execution

Advantages of Steel

Metal decking ready to be laid by hand

Edge trims are available to level concrete and prevent over-run

The shear studs which provide the

key between beam, deck and concrete can be

placed by a single operative at 1000

per day

1.0. INTRODUCTION


- Frame

- Shell

- Suspension

• Advantages



- Adaptibility

- Quality


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1. Speed of execution

Advantages of Steel

Concrete being placed by pumping Services are easily fixed to the underside of the decking

Prefabricated stairs can be transported by crane and placed in position to give rapid and safe access for construction workers

Cladding units -pre-cast granite faced or curtain walling -can be lifted straight from the lorry and into position to avoid site storage

1.0. INTRODUCTION


- Frame

- Shell

- Suspension

• Advantages



- Adaptibility

- Quality


2. Lightness, Stiffness & Strength

Advantages of Steel

Steel structures are generally lighter than other materials. In almost all casesthis lower weight leads to lower costs for foundations particularly for siteswith poor ground.

Smaller columns increase effective floor utilisation and, where longer spansare required, the cost savings between steel and other forms of constructionincrease considerably. For large column grids in buildings, steel is the onlyfeasible solution.

Long span floor systems for office building

1.0. INTRODUCTION


- Frame

- Shell

- Suspension

• Advantages



- Adaptability

- Quality


3. Adaptability of Usage of Steel Frames for Refurbishment

Advantages of Steel

Structural steel provides maximum adaptability forchanges in building use, because structural alterationscan be accommodated with relative ease. Whereadditional members are required, connections can bemade to the existing frame with minimumdisturbance and cost.

4. Quality

A steel frame is a factory made, precise product,produced by a stable, well-trained workforce.

Only the erection of pre-fabricated members is leftfor the site - a process which is easily controlled.

1.0. INTRODUCTION


- Frame

- Shell

- Suspension

• Advantages



- Adaptability

- Quality


Structural Elements

1.0. INTRODUCTION


- Frame

- Shell

- Suspension

• Advantages



- Adaptability

- Quality


• Beams and girders – members carrying lateral loads in bending and shear

• Ties – members carrying axial loads in tension• Struts, column and stanchions – members carrying axial loads in

compressions. These members are often subjected to bending as well as compression

• Trusses and lattice girders – framed members varying lateral loads. These a re composed of struts and ties

• Purlins – beam members carrying roof sheeting• Sheeting rails – bema members supporting wall cladding• Bracing – diagonal struts and ties that, with columns and roof

trusses, form vertical and horizontal trusses to resist wind loads and stabilize the building

• Joints connect members together such as the joints in trusses, beam-to-beam joints and beam-to-column joints.

• Bases transmit the loads from the columns to the foundations.

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1. Multi-storey frame1.0. INTRODUCTION


- Frame

- Shell

- Suspension

• Advantages



- Adaptability

- Quality


Structural Elements

2.Truss & lattice girder1.0. INTRODUCTION


- Frame

- Shell

- Suspension

• Advantages



- Adaptability

- Quality


Structural Elements

2.Truss & lattice girder1.0. INTRODUCTION


- Frame

- Shell

- Suspension

• Advantages



- Adaptability

- Quality


Structural Elements

3. Connection1.0. INTRODUCTION


- Frame

- Shell

- Suspension

• Advantages



- Adaptability

- Quality


Structural Elements

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- Frame

- Shell

- Suspension

• Advantages



- Adaptability

- Quality


Structural Elements



- Frame

- Shell

- Suspension

• Advantages



- Adaptability

- Quality


Structural Elements



- Frame

- Shell

- Suspension

• Advantages



- Adaptability

- Quality


Structural Elements



- Frame

- Shell

- Suspension

• Advantages



- Adaptability

- Quality


Structural Elements

l01 introduction kaea3218

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