BIM GlossaryIFC · EXECUTION PLAN · DATA

BIM client advisory services: helping the appointing party define intended uses, draft requirements, assess bids and verify the acceptability of digital deliverables.

• Prestation AMO BIM

Open format for exchanging comments and correction requests. A BCF carries the camera viewpoint, the relevant object reference and the discussion thread without carrying the model itself: it supports project reviews.

Collaborative working methodology based on digital models containing geometry and data. BIM is not software: it is a process that organises the production, exchange and verification of information throughout the building lifecycle.

• Formations BIM

Discipline lead for BIM: implements the BIM execution plan within their team, prepares deliverables, addresses issues arising from reviews and liaises with the BIM Manager.

Person responsible for the BIM framework of a project or organisation: drafting and maintaining the BIM execution plan, structuring the CDE, facilitating reviews, checking deliverables and developing team capabilities.

• Formation BIM Management

Statement of the client's requirements: intended uses, data to be delivered, milestones and acceptance criteria. It precedes the BIM execution plan, which describes how the project team will meet these requirements.

• AMO BIM

Common data environment: a single platform through which deliverables are shared, with statuses, versions and access permissions. It provides the traceability of exchanges required by the BIM execution plan.

Internal organisational document describing standing BIM production rules (folder structure, templates, naming conventions and libraries), independently of any specific project.

Automated identification of clashes and geometric rule violations across disciplines. It produces a list of issues requiring resolution by the relevant design stakeholders.

Coding system for built assets and their components (Uniformat, Omniclass, Uniclass or an internal classification system) that enables stakeholders to sort, cost and use model objects consistently.

Systematic verification of a deliverable: file integrity, classification, completeness of required properties, units, georeferencing, duplicates and incorrectly typed objects. Performed before integration into the CDE.

• Audit IFC

Contractual document that defines the BIM uses, roles, levels of detail and information, formats, naming conventions, exchange schedule and checking procedures for a specific project.

• Prestation BIM Management

As-built documentation delivered in a structured format: models reflecting the completed works and associated operational data (identification, location, characteristics and documents).

Parametric Revit object combining geometry, parameters and behavioural rules. Family quality directly determines the reliability of schedules and IFC exports.

• Formation Revit

Saved tool settings in Archicad (composite structure, layer, dimensioning and materials). When structured and named according to a consistent naming convention, they ensure graphical consistency across an entire team.

Archicad scripting language used to create parametric objects. It enables users to go beyond standard libraries while retaining control over the properties exported to IFC.

• Formation Archicad

Positioning the model within a project coordinate system (base point, survey point, elevation and true north rotation). Failure to use shared georeferencing is the leading cause of misalignment in federated models.

buildingSMART standard for expressing information requirements in a machine-readable form. It enables automated quality checks: requirements set out in the BIM execution plan become verifiable.

Standardised open exchange format (ISO 16739) describing building objects, their properties and their relationships. Versions used in production include IFC2x3, IFC4 and IFC4.3 (infrastructure).

• Audit IFC

Set of IFC export/import settings in Archicad: type conversion, property mapping and element filtering. Using a dedicated translator for each use case avoids arbitrary model exports.

Digital representation of an existing built asset, fed by operational data. It requires reliable digital as-built documentation and an established data governance framework.

Levels of geometric development (LOD) and information development (LOI) expected for an object at a given milestone. Distinguishing between the two avoids detailed modelling of objects for which only the data matters.

Concept introduced by EN 17412-1: the level of information need is defined by the intended use rather than by a catalogue of fixed levels. It is gradually replacing the use of LOD alone.

Assembly of models from multiple disciplines for analysis, without merging the source files. It is used for reviews, consistency checks and clash detection.

Schedule extracted from the model (quantities, areas and characteristics) and, by extension, a naming convention for files and objects. In both cases, reliability depends on the template configuration.

Approach to BIM based on open formats and standards (IFC, BCF, IDS) rather than a vendor's native formats. It ensures that each stakeholder can retain their own tools while exchanging readable data that remains usable over time.

• Formation OpenBIM / IFC

Set of properties attached to an IFC object. Standardised PSet (Pset_WallCommon, etc.) coexist with project-specific custom PSet, which must be declared in the BIM execution plan.

Production of a model from a survey (a point cloud generated by laser scanning or photogrammetry). Modelling tolerance and intended uses must be defined before the survey.

• Modélisation BIM

Tool for editing and preparing IFC models: filtering, enrichment, property restructuring and production of use-specific deliverables, without returning to the authoring software.

• Formation Simplebim

Model quality checking and coordination solution: rule sets, requirements verification, reviews and issue communication via BCF.

• Solibri

Design coordination service that ensures compatibility between the works of all disciplines. BIM is a tool for this process, not a substitute: coordination remains the responsibility of the design consultants.

Preconfigured starting file (styles, scales, schedules, filters, views, exports and classifications) that standardises and streamlines production. A well-designed template eliminates most repetitive compliance tasks.

• Template Archicad
• Template Revit