APPLYING LEAN PRINCIPLES TO REDUCE COST OF ROOF TRUSS INSTALLATION
Keywords:
LEAN, Cost Reduction, Wastes, Roof Truss Installation, Roof Truss StructureAbstract
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
Chansawang, S. (2020). “Truss Construction”, Bangkok. Retrieved June 15, 2022, from http://mypageblog.com/showsearch.php?userid=17&social= Tepprasit&word=%CB.
Cotco Metal Works Limited. (2020). Knitted frame in steel structure architecture. Retrieved January 11, 2020, from http://www.wazzadu.com/article/4230/
Engineering control. (2020A). Data shows the actual cost of roofing frame installation (The information report of the installation of the roof frame). Bangkok: Thai Takennaka International Co., Ltd.
Engineering control. (2020B). Data shows the early predictions of roof mounting work (The information report of the installation of the roof frame). Bangkok: Thai Takennaka International Co., Ltd.
Lean system. (2020). eliminates 7 wastes in production to reduce costs. Retrieved June 16, 2022, from http//www.proindsolutions.com
Sornsamran, S. & Amsakul, K. (2019). Economic and Business Research Center article: PreThai industry year. Report the findings. Bangkok: Economic and Business Research Center Siam Commercial Bank.
Thanditsuwan, T. et al. (2019). Business/Industry Trends: Construction Business. Report the findings. Bangkok: Krungsri Research.
Tumwongsa, N. (2019). Business/Industry Trends: Construction Business. Report the findings. Bangkok: Krungsri Research.
Vattanapooripakorn, W. (2012). “Factors Affecting Achievement in cost Management: A Case Study of Tall Building Projects”. In Business Engineering Management strategic cost management. Rajamangala University of Technology Thanyaburi.
Yomnak, T. (2020). “VE (Value Engineering) thinking process to creatively reduce Construction costs”. Retrieved June 16, 2022, from https://www. intaniamagazine.com/tortrakul-yomnak/
Yoshchaisarn, P. (2019). “Regression Model Development for Preliminary Calculate Cost for a Large Building in Roi Et Province”. In Faculty of Engineering Sustainable Industrial Management Engineering. Rajamangala University of Technology Phranakhon.
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