REBAR Production at Heathrow Expansion Demonstrates Power of Lean Construction
July 25th, 2006 by Hal
Application of Pull and CONWIP in Construction Production Systems
Roberto Arbula (Presented by Glenn Ballard)
"The intent to manage construction projects with detailed schedules long into the future is destined to fail."
Push, pull, and CONWIP1 were described. The concepts were explained using the REBAR Production System for Heathrow Terminal 5 Expansion.
- Operating from a central mind to distributed specialists will be very wasteful.
- High variation and uncertainty makes long term detailed schedules useless for managing work.
- Installers worked with detailers to design the production system.
PPC improved dramatically over the life of the REBAR detailing and production.
The story of lean construction at Heathrow is incredible. The project is way ahead of schedule and saving $ millions.
- CONWIP stands for Constant Work in Process to produce continuous flow. [ ⇑ back ]
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