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Literatures re Cost Optimisation

Literatures re Cost Optimisation

Literatures re Cost Optimisation

(OP)
Anyone can help me  please find some existing literatures aboout Cost Optimisation in general and Portal Frames in particular.

Many thanks

RE: Literatures re Cost Optimisation

Hi marblaze

Following is a rough breakdown of the costs for a 25 metre (82 foot) span, 7 metre (23 foot) eave height, portal frame building, from Waston (1996), Costing of Steelwork from Feasibility Through to Completion, Steel Construction, Vol 30 No 2:
  • supply, 72%
    • steel, 20%
    • purlins, 13%
    • sheeting, 39%
  • fabrication, 15%
  • surface treatment, 2%
  • erection, 11%
    • steel, 2%
    • purlins, 4%
    • sheeting, 5%
Having a structural engineering background, the main tips that I can give you are:
  • keep the structure simple, e.g. standardise bay widths
  • give careful consideration to selection of purlins and sheeting
  • rationalise member sizes
  • maximise shop fabrication and minimise field welding
  • keep the connections simple, e.g. minimise number of connection components; minimise use of stiffeners
  • standardise connection geometry and elements, e.g. one bolt size, grade and tightening procedure; one electrode strength grade, weld category and weld size (if possible)
Also, see the following papers from the Structural Steel Education Council (www.steeltips.org/index.php):
  • Cost Considerations for Steel Moment Frame Connections
  • Value Engineering and Steel Economy
  • What Design Engineers Can Do To Reduce Fabrication Costs
  • Designing for Cost Effective Fabrication

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