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Behaviour and Design of Steel Structures

Behaviour and Design of Steel Structures. Lecture 3 Conceptual design. Engineer. Ingenio (Latin) I create, devise, design Ingenious Ingenuity, creativity, engineering. History. Military Engineers First engineers Designed and constructed Siege Devices Engines – Latin derivative

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Behaviour and Design of Steel Structures

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  1. Behaviour and Design of Steel Structures Lecture 3 Conceptual design

  2. Engineer • Ingenio (Latin) I create, devise, design Ingenious Ingenuity, creativity, engineering

  3. History • Military Engineers First engineers • Designed and constructed Siege Devices • Engines – Latin derivative • Civil Engineers – Thomas Telford • Steam Engines • Denigration of word Engineer

  4. Creativity • Total experience • From conception, through design to completion of construction. • Includes analysis, computers, drawing, etc., as tools to complete the design.

  5. The Team • Client • Project manager • Architect • Structural Engineer • Services engineer • Geotechnical engineer • Environmental engineer • Transport engineer • Quantity Surveyor • Contractor

  6. Vital • Understand and be confident of what you are doing • Need to be sure that your answer is correct and be able to justify your opinion • Start with Paper and Pencil • WL2/8 • Back of an envelope • Proceed with initial thoughts on Design development

  7. Client’s Brief • Use • Economy • Site / Location • Space • Access • Parking • Facilities

  8. Considerations • Client’s brief • Architect • Structural Engineer • Services engineer • Topography • Ground conditions • Access • Material availability • Economics • Environment

  9. Fees • Scale Fees – old way • %age of final Contract Sum • Contract total is £5m • Fee at 4% is £200k • Average Cost = £30/hour • Hours = 6666 or 175 man weeks • Conception • Report • Design • Detail • Tender Documents • Construction Administration

  10. Fees (Cont) • Fixed Lump Sum • About 2% • Target Fee • %age of Profit • Term Appointment • Agree with Client for say 5 years • Fees by negotiation built around previously agreed rates.

  11. Requirements • Topographical survey • Ground investigation • Services survey • Environment survey • Sources survey • Contractor’s survey

  12. Designer’s Report • Sketch proposals • Considerations • Frame • Materials • Suitability • Integration with Team • Response from Team

  13. Exercise • Prepare sketch proposals for a steel framed building for the space defined. The room has to be capable of being partitioned into 3 rooms. • Allow 2.0 m space in the roof for Services. • Show dimensions and draw beam depths and column widths. • Use the following as a basis • Simple Beams : span to depth 1 – 10 to 1 – 15 • Continuous Beams : 1 – 20 to 1 - 25

  14. Behaviour and Design of Steel Structures Lecture 4 Simple Beam Design

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