Heijmans BIM ladder

It is possible to achieve up to five stars for each level. These stars make it clear in concrete terms which BIM activity or output should be delivered to match the desired ambition level.

Ambition level A

1st star: Presence of 3D Model of all (or at least four) design disciplines up to and including the DO phase (geometry)
2nd star: Presence of Integral Model of all design disciplines up to UO phase with information according to BIM specifications
3rd star: Presence of at least three production models
4th star: Use of Common Data Environment (CDE)
5th star: Each individual object has an owner

Ambition level B

1st star: Construction site design is part of the Integral Model
2nd star: (Part of) the construction phasing is simulated
3rd star: (Part of) the execution process is simulated
4th star: Information for logistical processes comes from the Integral Model and/or the CDE
5th star: Use of scenario analyses for optimisation of the execution process

Ambition level C

1st star: Quantities are automatically extracted from the Integral Model for calculation and/or purchasing purposes
2nd star: Information from the Integral Model is used for work preparation
3 star: The Integral Model is enriched with information from work preparation
4 stars: The Integral Model contains at least four production models
5th star: Asset information is derived from the Integral Model

Ambition level D

1st star: The Integral Model and extracts (if any) are available on site via Mobile Devices
2nd star: Application of Digital Inspection
3rd star: Execution records As-Built information (geometric and object properties) in the Integral Model
4th star: (Semi-)automatic monitoring by means of e.g. laser scanning/imaging
5th star: Execution information is generated from the Integral Model in a task-oriented way

Ambition level E

1st star: Requirements are verified using the Integral Model
2nd star: Application of design calculations or simulation from the 3D model
3rd star: 3D models have been created parametrically (at least three components)
4th star: At least two external information sources related to the use phase of the system (e.g. a building, tunnel, object, etc.) are linked to objects in the Integral Model
5th star: Digital Twin 2.0; the Integral Model is part of a comprehensive information system that controls information exchange and building controls

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