BuildingSMART Data Dictionary
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buildingSMART Data Dictionary (bSDD) is a service provided by buildingSMART which offers free data dictionaries for the international standardization of construction planning. The structure of bSDD was defined by the Nonprofit organization Buildingsmart and is used to describe objects and their attributes.
Aim
The aim of bSDD is to enable architects and planners to exchange and share building data across different specialists and language boundaries[1] and thus avoid misunderstandings caused by different interpretations of terms. The bSDD standard extends the more general IFC.[2] Software developers can access and use the dictionaries.[3]
In May 2025 around 300 dictionaries are available, including IFC,[4] extensions to it such as Airport Domain IFC extension module[5] or claissification systems like Uniclass.[6]
Structure
The main structural parts of bSDD are:[7]
- Dictionary: A dictionary is a collection of classes:
- Class: A class describes the various object types, such as Bag drop[8] or Baggage conveyor[9] in airport planning. A class contains properties:
- Property: A property describes a part of a class, e.g. color or weight. Related properties are organized in a group:
- GroupOfProperties: A group organizes related properties, e.g. environmental properties or electrical properties.
Creating and managing a directory
Every dictionary in bSDD must be published in the name of a registered organization.[10] As soon as the content is activated, it receives an unchangeable URI. This means that the content remains permanently in bSDD and cannot be deleted - this ensures stable use of the dictionary. It is only possible to change the status to inactive if it is no longer to be used - however, the dictionary remains permanently.[10]
External links
References
- ^ "What is bSDD and what is it for?". www.accasoftware.com. Retrieved 2025-05-25.
- ^ "bSDD (buildingSMART Data Dictionary)". www.accasoftware.com. Retrieved 2025-05-25.
- ^ BauNetz. "bsDD – für eine definierte BIM-Terminologie | Integrales Planen | Standardisierung | Baunetz_Wissen". Baunetz Wissen. Retrieved 2025-05-25.
- ^ "IFC". search.bsdd.buildingsmart.org. Retrieved 2025-05-25.
- ^ "Airport Domain IFC extension module". search.bsdd.buildingsmart.org. Retrieved 2025-05-25.
- ^ "Uniclass". search.bsdd.buildingsmart.org. Retrieved 2025-05-25.
- ^ "Data structure of bSDD". buildingSMART Technical. Retrieved 2025-05-25.
- ^ "Bag drop". search.bsdd.buildingsmart.org. Retrieved 2025-05-25.
- ^ "Baggage conveyor". search.bsdd.buildingsmart.org. Retrieved 2025-05-25.
- ^ a b "Managing the content of bSDD". buildingSMART Technical. Retrieved 2025-05-25.
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Category:Industrial computing
Category:Building information modeling