BIM Standards: A Complete Guide to Understanding and Applying Them
Discover the BIM standards (ISO 19650, ISO 23386...), their role in France and Europe, and how to apply them to ensure collaboration and quality.
BIM standards are the foundation of the digital transformation in construction. They define a common language to structure data, harmonize working methods and guarantee interoperability between software and trades.
Without standards, each stakeholder would work according to their own rules, multiplying the risks of errors and misinterpretation. With them, projects gain in clarity, consistency and efficiency.
In this article, we will look at the main BIM standards, how they apply to projects, and what benefits they bring to industry professionals.
What are BIM standards?
BIM standards are international reference frameworks that govern information management in construction projects. Their objective is to allow all stakeholders (architects, engineers, project owners, contractors) to work on a common base, regardless of the software used.
Definition and role of standards in BIM
A BIM standard is not just a technical document. It is a reference framework that defines how to create, organize, exchange and preserve the data of a project. It ensures that each stakeholder speaks the same digital language and that the information transmitted is reliable and lasting.
In practice, BIM standards cover topics as varied as file structuring, object coding, process documentation or the management of the digital model lifecycle.
Why standards are essential to information management
BIM relies on a collaborative digital model where each discipline brings its data. Without standards, compatibility between models would be almost impossible.
BIM standards make it possible in particular to:
- avoid errors related to format conversions,
- ensure interoperability between different software and trades,
- guarantee traceability and data quality throughout the project,
- preserve information beyond construction, all the way to the operation of the building.
The main BIM standards to know
BIM is governed by several international standards that set the rules for information management and data structuring. Some are unavoidable and apply to all projects, others concern more specific aspects such as object libraries or exchanges between platforms.
ISO 19650 (information management)
The ISO 19650 standard is the global reference for information management in BIM projects. It defines a framework for organizing, storing, sharing and updating data throughout the lifecycle of a building or infrastructure.
Concretely, it specifies:
- the structure of files and digital models,
- the roles and responsibilities of the various stakeholders,
- the procedures for validating and updating data.
This standard is used from the design phase through to the operation of the building, guaranteeing continuity and consistency in the handling of information.
ISO 23386 (BIM object libraries and properties)
The ISO 23386 standard specifically concerns BIM object libraries. It defines how the properties of objects must be created, validated and shared.
The objective is to allow each stakeholder to find reliable, homogeneous and understandable information on the objects integrated into a digital model. Thanks to this standard, a BIM object (for example a window, a wall or a piece of technical equipment) contains standardized properties that all software can interpret.
This makes interoperability easier and avoids compatibility problems between libraries developed by different vendors.
Other international and European standards related to BIM
Besides ISO 19650 and ISO 23386, several other standards complement the BIM regulatory framework:
- ISO 29481 (Information Delivery Manual) describes how to document BIM processes,
- EN 17412-1 defines the information levels required (LOIN) for each phase of a project,
- national or European standards (such as the French NF EN ISO derivatives) adapt the international standards to local practice.
These standards form a coherent set that structures BIM use and makes large-scale collaboration easier.
BIM standards in France and Europe
While BIM standards are defined on an international scale, their application varies from country to country. In France as in Europe, several bodies ensure the derivation and dissemination of these standards so that they can be used concretely by construction stakeholders.
The French derivatives of ISO standards
In France, the ISO standards relating to BIM are taken up and translated under the name NF EN ISO. For example, the ISO 19650 standard is published as NF EN ISO 19650. This adaptation makes it possible to guarantee that the international rules are legally recognized and integrated into the French regulatory framework.
The application of these standards is encouraged by public procurement and major clients. More and more specifications require that BIM deliverables comply with the standardized reference frameworks, in order to make the operation and maintenance of structures easier.
The role of AFNOR and CEN in BIM standardization
AFNOR (Association Française de Normalisation) is the body in charge of standardization in France. It actively participates in European and international work to make BIM standards evolve and to ensure their consistency with French practice.
At the European level, the CEN (European Committee for Standardization) coordinates the translation and harmonization of ISO standards so that they are applied homogeneously in all member countries. This approach aims to create a common foundation that makes cross-border cooperation easier and avoids divergences between countries.
Thanks to this standardization work, French professionals have recognized, adapted standards that ensure continuity with European and global standards.
How to apply BIM standards in a project?
Complying with BIM standards is not limited to knowing them: you have to integrate them into the project methodology. This requires putting in place procedures, contractual documents and suitable tools to guarantee compliance throughout the lifecycle of the structure.
Setting up a BIM protocol that complies with the standards
A BIM project generally begins with the drafting of a BIM protocol. This contractual document specifies the objectives, responsibilities and rules to be respected regarding information management. To be effective, it must rely on the applicable standards (in particular ISO 19650) in order to ensure consistency in data organization.
The protocol defines, for example:
- the nomenclature of files and objects,
- the exchange formats accepted (including IFC),
- the deadlines for updating and delivering data,
- the validation and quality control procedures.
The importance of the BIM Execution Plan (BEP) and documented processes
The BIM Execution Plan (BEP) is a key document for applying standards on the ground. It details how the project will be carried out, by setting the rules of collaboration, the tools used and the expected deliverables.
A well-built BEP makes it possible to:
- ensure that all stakeholders share the same vision of the project,
- verify the compliance of deliverables with BIM standards,
- anticipate roadblocks and reduce the risk of errors.
It thus becomes an essential steering tool for the project owner and BIM coordinators.
Tools and methods to ensure compliance
Beyond documents, the application of BIM standards relies on tracking and control tools. Collaborative platforms (CDE: Common Data Environment) are essential to centralize information and guarantee its traceability.
In addition, specialized software makes it possible to automatically verify the compliance of digital models with the defined standards. They check the IFC structure, the completeness of object properties or compliance with naming conventions.
Combining clear organization (protocol + BEP) and suitable tools is the key to turning BIM standards into operational reality on a construction site.
The benefits of complying with BIM standards
Applying BIM standards is not just a technical or regulatory requirement. It brings true operational and strategic benefits to construction stakeholders. By structuring information and harmonizing methods, standards contribute to improving the quality, collaboration and profitability of projects.
Improvement of collaboration and interoperability
BIM is above all collaborative work. The standards offer a common language that allows the various trades to communicate effectively. Thanks to them, a file produced by an architect can be read, understood and enriched by an engineer or an operator, with no information loss.
This interoperability:
- smooths exchanges between software,
- reduces the risk of duplicates or misunderstandings,
- encourages better coordination between project stakeholders.
Reduction of errors and cost optimization
One of the major benefits of BIM standards is the reduction of errors. By requiring clear data structuring, they make it possible to detect inconsistencies and conflicts more quickly (for example, a duct crossing a load-bearing wall).
These early detections avoid costly corrections in the construction phase and contribute to optimizing the overall budget. Several studies show that compliance with BIM standards can significantly reduce the cost overruns related to rework and improve team productivity.
Durability and quality of project data
BIM standards also guarantee the durability of information. Unlike proprietary formats that evolve according to vendors, a standardized model remains readable and usable over the long term.
This is a decisive advantage for project owners and managers, who must exploit the data well after the building’s delivery. Thanks to reliable, standardized information, maintenance, energy management and future renovations become simpler and better documented.
Limits and challenges of BIM standards
While BIM standards bring many benefits, their rollout is not always simple. Professionals come up against technical, organizational and sometimes economic constraints that slow their adoption. Understanding these challenges makes it possible to anticipate difficulties and to put suitable solutions in place.
Complexity of rollout and need for training
Applying BIM standards requires advanced technical mastery. Reading normative documents can be complex and translating them into the concrete processes of the project requires specific expertise.
In addition, not all project stakeholders have the same level of BIM maturity. It is frequent that some teams are trained and others are not, which creates an imbalance in collaboration. Investment in continuous training is therefore essential to guarantee a homogeneous application of the standards.
Differences in application between countries and software
Another challenge lies in the variability of practices. Although BIM standards are international, each country can have its own adaptations, which complicates cooperation on cross-border projects.
Likewise, BIM software does not always interpret the standards identically. For example, the export or import of an IFC file can vary from one tool to another, leading to data loss or display differences.
These disparities require increased vigilance on the part of BIM coordinators and systematic validation of files before their distribution.
BIM standards FAQ
Which BIM standard is mandatory in France?
There is no BIM standard that is mandatory for all projects. However, the NF EN ISO 19650 has become the reference standard and often appears in the requirements of public procurement.
What is the difference between ISO 19650 and ISO 23386?
- ISO 19650: standard on information management and the organization of BIM processes.
- ISO 23386: standard dedicated to the properties and structuring of BIM objects.
Do BIM standards only apply to large projects?
No. They are useful both for large projects and for smaller operations, because they guarantee the quality, readability and durability of data.
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