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Assoc. Prof. Rafael Sacks Civil and Environmental Engineering Technion - Israel Institute of Technology.

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Presentation on theme: "Assoc. Prof. Rafael Sacks Civil and Environmental Engineering Technion - Israel Institute of Technology."— Presentation transcript:

1 Assoc. Prof. Rafael Sacks Civil and Environmental Engineering Technion - Israel Institute of Technology LEAPCON Lean Apartment Construction Workshop

2 Assoc. Prof. Rafael Sacks Civil and Environmental Engineering Technion - Israel Institute of Technology Apartment Construction Flooring Drywall HVAC Ceilings Design Changes

3 Assoc. Prof. Rafael Sacks Civil and Environmental Engineering Technion - Israel Institute of Technology Simulation setup Quality Control Client Project Manager Material Store Client Rep Ceiling team HVAC team Drywall team Flooring team Client Changes Rep Crane Design Changes Building floors and apartments

4 Assoc. Prof. Rafael Sacks Civil and Environmental Engineering Technion - Israel Institute of Technology Production Plan (Gantt Chart)

5 Assoc. Prof. Rafael Sacks Civil and Environmental Engineering Technion - Israel Institute of Technology Results for 2 groups Round Completed (units) Defective apartments (units) Time to first apartment with changes (min.) W.I.P. (units) Throughput (units/min.) Cash flow ($) Cycle time (min.) Conventional (1)(2)(3) Lean (4)(2)(5)

6 Assoc. Prof. Rafael Sacks Civil and Environmental Engineering Technion - Israel Institute of Technology Discussion between rounds: Difficulties with the system Management Team: What did you feel during the game? Were you busy? Did you manage to implement your plan? Were you in control? Drywall team: Were you busy? HVAC team Were you busy? Bottleneck, Cycle time, WIP, Push What is the meaning of cycle time for apartment construction in real projects? How would you improve the process?

7 Assoc. Prof. Rafael Sacks Civil and Environmental Engineering Technion - Israel Institute of Technology Discussion after the second round Management Team: What did you feel during the game? Were you busy? Did you manage to implement your plan? Were you in control? Drywall team: Were you busy? Was your productivity improved? HVAC team Were you busy? Was your productivity improved? Bottleneck, Cycle time, WIP, Push What is the meaning of cycle time for apartment construction in real projects? How would you improve the process?

8 Assoc. Prof. Rafael Sacks Civil and Environmental Engineering Technion - Israel Institute of Technology LEAPCON – typical results

9 Assoc. Prof. Rafael Sacks Civil and Environmental Engineering Technion - Israel Institute of Technology LEAPCON - Cash Flows 9 07:06 $(20,000) $(15,000) $(10,000) $(5,000) $0 $5,000 $10,000 $15,000 $20, Simulation Time (min.sec) Cash Flow F': Lean, no customization F: Lean A': Conventional, no customization A: Conventional LEAPCON Simulation

10 Assoc. Prof. Rafael Sacks Civil and Environmental Engineering Technion - Israel Institute of Technology LEAPCON Users around the world 10 07:06

11 Assoc. Prof. Rafael Sacks Civil and Environmental Engineering Technion - Israel Institute of Technology Background Reading The Goal Eli Goldratt Lean Thinking Womack and Jones The Critical Chain Eli Goldratt Factory Physics Hopp and Spearman Sacks, R., Esquenazi, A., and Goldin, M., (2007). LEAPCON: Simulation of Lean Construction of High-rise Apartment Buildings, Journal of Construction Engineering and Management, Vol. 133 No. 7 pp LEAPCON: Simulation of Lean Construction of High-rise Apartment Buildings 11 07:06


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