Integration of Lean Con. and Building Information Modelling
understand the relations between the concepts. These are the requirements for how
methodologies/actions/techniques must contribute to the production system goals, involving an
understanding of how actions relate to goals. As the two upper levels involve the notion of concept,
then these must be converted to reality through methods, techniques, functions and etc. (Henrich,
Bertelsen, Koskela, Kraemer, Rooke, and Owen, 2006).
On the most general level, there are three possible actions or functionalities in construction projects:
design of the production system, control of it in order to realize the production intended, and
improvement of the production system (Henrich, Bertelsen, Koskela, Kraemer, Rooke, and Owen,
2006). These functionalities should be understood as a coherent system, where design of the
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