Monday, 24 February 2020

Following the ISO 19650 series of standards when publishing specifications

The ISO 19650 international series of standards looks at information management using building information modelling. When developing the publishing features within NBS Chorus, these standards have been used as a guiding framework.

Information quality with respect to classification and codes to indicate the status and revision of each published specification is core to these standards:

  • Classification - NBS content is classified to the recognized national standard in each country. With respect to the UK and Australian NBS content, Uniclass 2015 is one such classification system which is an implementation of the ISO 12006-2 framework.
  • Revision code - The revision code for each published specification should be to an agreed standard
  • Status code - A status code system should be agreed to indicate the permitted use of the published specification.

Furthermore, each published specification should be given a human readable ID which is unique and based upon an agreed and documented convention comprised of fields separated by a delimiter. The Publication details window in NBS Chorus allows this information to be captured based on the agreed standard on a particular project as shown in Figure 1.
Figure 1 - The Publication details window in NBS Chorus
When working to BS EN ISO 19650-2
The BS EN ISO 19650-2 standard includes a National Annex that expands on the basic requirements for those working to UK standards and practices.

The screenshots below show an example of how publication history may develop within NBS Chorus when following the UK BIM Framework guidance.

Figure 2 below shows that by using the Uniclass 2015 classification system, the information within the published specification will be structured to classification system that follows the ISO 12006-2 framework. Consistency in the Suffix codes used (FCS for Floor covering systems for example) can also help with ‘packaging’ similar systems.
Figure 2 - Uniclass 2015 classifications within the specification

Figure 3 below shows how a record of specifications published from NBS Chorus can be viewed in the Publish history tab. In this example, it is worth highlighting some of the fields that have been populated:
  • Number - A unique ID for the published specification that follows the BS EN ISO 19650 standard has been recorded here. The delimiters of the ID LAKR-HAM-43-XX-SP-A-00006 show that this a specification (SP) from the architectural (A) practice Hamil Design (HAM) on the project Lakeside Restaurant (LAKR). When this PDF is then uploaded to the common data environment, this data can be quickly seen by using this naming convention.
  • Status - The status S4, as defined in BS EN ISO 19650, indicates that this particular specification was published for stage approval.
  • Revision - The revision code of P02 shows that this publication is still provisional and it also shows where it is in the sequence of publications.
Figure 3 - A Publish history showing unique ID, Status and Revision codes
Figure 4 shows that when using a consistent coding system, it is then easy to quickly filter a large list of publications to find the information that is needed. For example, this could be all publications of the floor covering systems or all publications that are suitable for stage approval.
Figure 4 - Using the search filter to quickly find published specifications

The UK BIM Framework website has extensive free-to-use guidance to support those working to this series of standards.


When working outside of the UK, there may not be the same guidance available at a national level. There may be great variance between organizations as to how they indicate revision or status codes. It is advised that the project team agree on what these will be and document this in a Project Information Standard so that each team member can consistently publish information which can then be uploaded to the project common data environment.

Doing a quick Google Search - this publication from BrisBIM provides some guidance for working to ISO in Australia from contributors from organizations such as Aecom, Arup, Mott MacDonald, and Woods Bagot.

In Canada, there is a buildingSMART Canada working group developing something similar.

To find out more about NBS Chorus see:

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