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Level of Information Need and Level of Development

2025-06-11

Jim Bedrick (BIMForum) & Tony Rinella (buildingSMART USA Education Committee)

ISO 7817-1 Level of Information Need released a year ago [2024-06] outlines concepts and principles of information requirements, and Level of Development (LOD) supports implementation of the geometric aspects of that standard. They interoperate synergistically to provide a practicable toolset for data management of built environment projects and resulting durable assets.

Learning Objectives:

Describe how Level of Information Need helps formulate Project Information Requirements (PIR)

Explain the difference between Level of Development and Level of Detail

Identify which Level of Information Need requirements are addressed by LOD

Outline how Level of Development supports the use of a model as a contract

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