APPLYING LEAN PRINCIPLES TO REDUCE COST OF ROOF TRUSS INSTALLATION

Authors

  • Weerakarj Dokchan Faculty of Engineering Siam University, Bangkok
  • Weerayut Wongdee Siam University
  • Pongtawat Narktrakul Faculty of Engineering Siam University, Bangkok

Keywords:

LEAN, Cost Reduction, Wastes, Roof Truss Installation, Roof Truss Structure

Abstract

This research aims to apply lean principles to reduce the installation cost and to reduce the installation time in roof truss construction. The lean principles applied are 7 rules: 1) losses due to over-production, 2) losses due to inventory storage, 3) loss due to transportation, 4) loss due to movement, 5) loss due to production process, 6) loss due to waiting and 7) losses due to waste production. The research methods were made improvements to the method of lifting by installing roof trusses Instead of lifting separately. Calculate the weight of each truss, assemble the truss in the working area close to the installation point, reducing the process of working on high rick area and increased on ground operation. Used case studies of two industrial construction of similar size. Then compared the installation cost and installation time information before and after renovation. The results concluded of compared the cost per area of Project 1 with Project 2 that cost was reduced the roof truss by 68,780 baht. And compared the cost per area of Project 1 and Project 2 that the Installation cost was reduced by 108.15 baht per square meter, representing 56.47% and installation time in Project 1 took 3,140 minutes, and in project 2 took 2,333 minutes. The installation time was reduced by 807 minutes, or 25.70%.

References

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Published

2022-11-30

How to Cite

Dokchan, W., Wongdee, . W. ., & Narktrakul, P. . (2022). APPLYING LEAN PRINCIPLES TO REDUCE COST OF ROOF TRUSS INSTALLATION. Journal of Buddhist Anthropology, 7(11), 495–509. Retrieved from https://so04.tci-thaijo.org/index.php/JSBA/article/view/262060

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Section

Research Articles