LEAPCON

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LEAPCON

• Lean Apartment Construction
• Workshop

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Apartment Construction
Design Changes
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Simulation setup
Material Store
Building floors and apartments
Crane

Client Rep
Quality Control
Project Manager
Design Changes
Client Changes Rep
Client
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Production Plan(Gantt Chart)
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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)
Conventional
Lean (4) (2) (5)
Lean
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Discussion between roundsDifficulties 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?

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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?

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LEAPCON typical results
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LEAPCON - Cash Flows
LEAPCON Simulation www.technion.ac.il/cvsacks/tec
h-leap.htm
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LEAPCON Users around the world
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Background Reading

• The Goal Eli Goldratt
• www.leanconstruction.org
• Lean Thinking Womack and Jones
• www.iglc.net
• 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. 529-539.