What’s the logic for CLASSIFYING BIM DATA?

Classifying data means structuring it in an agreed way so that different actors can easily find what they need and understand it. A classification system is like a common language. In BIM, classification lets people, software and machines share and use building information efficiently and accurately.

The importance of classification is growing as teams for building projects get more complex and international, and as projects themselves generate more and more data which is then relied on to automate processes, make better decisions and operate devices.

Different classification systems have been developed for different types of BIM data and actors, and for different geographic areas and situations. Below are some examples.

Uniclass 2015

Uniclass 2015 is a unified classification for the UK industry covering all construction sectors.


The OmniClass Construction Classification System (known as OmniClass™ or OCCS) is a classification system for the construction industry.


MasterFormat®, a publication of CSI and CSC, is a master list of numbers and titles classified by work results.


UniFormat™, a publication of CSI and CSC, is a method of arranging construction information based on functional elements, or parts of a facility characterized by their functions, without regard to the materials and methods used to accomplish them.


CoClass Swedish classification system for the built environment.


CCS Danish classification system for the built environment.

TALO 2000

TALO 2000 Finnish classification System

NS 3451 & TFM

Norwegian classification System

NS 3451TFM

Industry Foundation Classes

Industry Foundation Classes (IFC) are the buildingSMART data model standard.

buildingSMART Data Dictionary

The buildingSMART Data Dictionary (bSDD) is a library of objects and their attributes.



The international standard for uniform classification of technical products.

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