2.1 Acquisition Strategy
The project acquisition strategy will define the BIM model creation, and hence it is imperative that the decision to use Design-Bid-Build (DBB), Design Build (DB), or Integrated Design & Construction (IDC) etc., be determined at the initial stage of the project so that BIM can be properly structured and managed to support the acquisition. The contracts 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, such as the number of BIM Managers (there may be only one BIM Manager throughout the project if IDC or DB is used, and two, a Design and a Construction BIM Manager if DBB is used). Similarly, contractually defined risk will also determine whether there are separate design intent and construction BIM models, or whether they can be combined into one model.
VA is committed to the interoperability of data as a strategic management issue to insure VA's access to building information over the life of the capital asset. Therefore, any software that meets VA interoperability standards is acceptable for use on VA projects, with VA approval. It is also critical that national standards and protocols are used in developing the models, such OmniClass, Uniformat, Masterformat, VA National Standards, National BIM Standards (NBIMS), etc., so that information can be machine read and normalized for VA management purposes. Unique GUIDs, assigned in the BIM tools, shall be maintained to support data in workflows.
BIM authoring tools, data integration, and collaborative team workflow environments shall be used to develop and produce project information and documentation as required for submittals in Program Guide PG 18-15: A/E Submission Instructions for Major New Facilities, Additions & Renovations. BIM use shall be maximized for project reviews, decision support, design analysis, and quality assurance during all phases of the project.
It is the responsibility of all consultants and contractors to have or obtain, at their cost, the trained personnel, hardware, and software needed to successfully use BIM for the project. Equipment used by the subcontractors during the on-site coordination meetings must meet the requirements of the software being implemented so as not to cause delays in modeling and redrawing. All technical disciplines shall be responsible for their data integration and data reliability of their work and coordinated BIMs.
It is important to VA to own, reuse, and properly manage building data throughout the facility lifecycle. Consequently, VA places significant importance on the accurate creation, management, and stewardship of building information during project creation, and expects that data created during planning, refined during the project execution process, will be reused in facility management. BIM Model(s) shall be provided at the end of construction that can be used for this purpose.
The terms Design Team, Construction Team, and Design/Construction Team have been used in this manual to assist in defining which group the guidance applies to. However, because the acquisition strategies can define risk differently, for some projects the responsibility will shift to different either the AE or Contracting entity, or both. The VA Contract should properly define the duties of the parties before BIM modeling begins.
To facilitate BIM development, the VA has provided the Object Element Matrix that defines object and element properties and attributes by Uniformat/OmniClass classification and Level of Development (LoD).
To ensure the life-cycle use of VA building information, VA requires that information supporting common industry deliverables be provided in existing open standards, where available. For those contract deliverables whose open standard formats have not yet been finalized, the deliverable will be provided in a mutually agreed upon format which allows the re-use of building information outside the context of the proprietary BIM software. The formats used will be specified in the BIM Management Plan and shall include, at a minimum, the following standards:
- Current version IFC Model View Definition (MVD) formats:
- Coordination---This format will be required for all deliverables needed to demonstrate the coordination of design disciplines prior to construction or the coordination of construction trades supporting the efficient fabrication, staging, and installation of fabricated building elements. In addition to the Coordination View file(s), where required the designer and contractor shall provide a report highlighting automatically detected (hard and soft) collisions and identifying those collisions that require further work by the design or construction team.
- Facility Management---Portions of this life-cycle oriented data format will be required for a variety of different building information deliverables that will replace paper deliverables. The deliverables for the FM Handover MVD in COBIE format include, but are not limited to:
- Verification of the design solution against the Program For Design
- Scheduled building and medical equipment lists
- Construction submittal register requirements
- Identification of installed equipment and all tagged building products
- Facility handover deliverables
- Portable Document Format: Copies of all approved submittals and other documents normally provided in traditional paper-based formats will be provided in PDF format. Documents authored directly by the project team shall be transformed to PDF to allow selection of text within the document. Documents authored by others, but used by the project team such as manufacturer product data sheets, will be provided the format made available by the manufacturer or scanned as image-based PDF documents.
GUID – Globally Unique Identifier, which is a unique code identifying each object/space. A GUID should not be confused with "code" in "room code," "equipment code," or "space code." The GUID assigned by the BIM authoring tool persists through room name changes and various other modifications, allowing the object/space to be tracked throughout the project execution process.