Project delivery method
The project procurement strategy defines the BIM model creation. It’s imperative to determine the procurement methods in the initial stage to ensure that BIM can be properly structured and managed to support the procurement strategy. This includes the use of:
- Design-Bid-Build (DBB) (traditional method)
- Design and Build/Construct (D&C)
- Integrated Project Delivery (IPD)
- Any other procurement method
The contracts often seen as a secondary option in the contract (i.e NEC, FIDEC, JBCC.) will define the integration or separation of risk and responsibilities for the design and construction contracting entities, and therefore, the Level of Development (LOD) and division of responsibilities.
- There may be only one BIM Manager throughout the project if DBB or D&C is used, and potentially two, a Design and a Construction BIM Manager if IPD is used.
Similarly, contractually defined risk also determines whether there are separate design intent and construction BIM models, or whether they can be combined into one model (in a multi-disciplinary design model.)
Where the BIM model(s) is to be used for design/documentation and construction, the BEP should address how the model(s) be migrated between stages effectively and efficiently.
Clients may require the interoperability of data as a strategic management issue to ensure access to building information over the life of the capital asset. Therefore, any software that meets the client’s interoperability standards is acceptable for use on their projects, subject to their approval.
It is also critical that available project standards, object families and protocols are used in developing the models so that information can be machine read and normalised for the client’s management purposes. Unique Global Unique Identifiers (GUIDs) assigned in the BIM tools must be maintained to support data in workflows.