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Economics of on-site vs. off-site fabrication of rebar


  • Gul Polat
  • David Arditi
  • Glenn Ballard
  • Ugur Mungen


Many contractors prefer on-site fabrication of rebar while others find that off-site fabrication is more advantageous. The economics of on-site and off-site fabrication of rebar need to be compared on the basis of several factors that include the project environment, wages, labour considerations, the initial investment for equipment, waste of rebar, the cost of inventory, cycle time, and supply chain management. This study presents an economic comparison of the on-site and off-site fabrication practices of rebar by means of a simulation model that makes use of the factors mentioned earlier. The model is populated with actual data obtained from a trade centre project in Istanbul, Turkey. The article indicates that the off-site fabrication practice would have been more costly than the on-site practice in the project in Istanbul, a finding that was to be expected in circumstances that prevail in most developing countries.

Suggested Citation

  • Gul Polat & David Arditi & Glenn Ballard & Ugur Mungen, 2006. "Economics of on-site vs. off-site fabrication of rebar," Construction Management and Economics, Taylor & Francis Journals, vol. 24(11), pages 1185-1198.
  • Handle: RePEc:taf:conmgt:v:24:y:2006:i:11:p:1185-1198
    DOI: 10.1080/01446190500529432

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    References listed on IDEAS

    1. Low Sui Pheng & Mok Sze Hui, 1999. "The application of JIT philosophy to construction: a case study in site layout," Construction Management and Economics, Taylor & Francis Journals, vol. 17(5), pages 657-668.
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    Cited by:

    1. Joosung Lee & Jaejun Kim, 2017. "BIM-Based 4D Simulation to Improve Module Manufacturing Productivity for Sustainable Building Projects," Sustainability, MDPI, Open Access Journal, vol. 9(3), pages 1-23, March.


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