buildingSMART Data Dictionary

The buildingSMART Data Dictionary (bSDD) is a shared library of objects and their attributes utilizing ISO 12006-3 ontology for the building and construction industry.  It is used to identify objects in the built environment and their specific properties regardless of language. The bSDD is open and international, allowing architects, engineers, consultants, owners and operators on one side and product manufacturers and suppliers on the other from all around the world to share and exchange product information. The bSDD helps reduce costs and improves quality, streamlining mapping between different users and applications through comprehensive modelling of objects and validation of data.

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Are you an end-user?


Ensure the knowledge you wish to be added to the model is interpreted and fully understood by interacting with your preferred software vendor or the bSDD Product Manager.   If you have questions about using the bSDD, contact the buildingSMART Data Dictionary Support Team.

Are you a content creator?

Whether you want to publish employer’s information requirements, your classification system or product data templates, bSDD lets you connect to the world in a unique way.

buildingSMART International certifies agents that will ensure your content gets properly added to the dictionary.  buildingSMART Chapters are neutral agents that know how to use the Information Delivery Manual (IDM) methodology to help establish your content in proper relation to IFC and bSDD, and at the same time give you a well-documented IDM for how to use your content.  Some countries also have established CEN442 compliant national domains, where you might be interested in contributing as experts.  There are also several commercial agents certified by bSI competent in modelling your content properly with IFC and bSDD data model, and ensure compliance with ISO 16354.  To better understand how the process works, contact the bSDD Product Manager.

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Are you a software developer?


bSI can help you explore use cases, understand the API and resources, support development and testing, and how to publish, obtain certification and support end users.  For more information, contact the bSDD Product Manager.