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  • PublisherCIBSE
  • Product CodeDE4
  • Number of pages24
  • Publication DateMar 2017
  • ISBN9781906846954

DE4: Common Data Environments

CIBSE Members

PDF Format




PDF Format



DE4: Common Data Environments

DE4, part of CIBSE's Digital Engineering series, is intended for those that specify, commission and use Common Data Environments (CDEs).

It is based on BS 1192:2007+ A2:2016 and PAS 1192-2:2013 and provides guidance to users of CDEs as to how data can be added and retrieved from a CDE and what principles are behind the use of them. It is not intended to be an exhaustive or definitive document and it will be necessary for users of the guidance given to exercise their own professional judgement when deciding whether to abide by or depart from it.

A definition of what a Publicly Available Specification (PAS) is is shown later in the text. The standing of such a document should be considered.

The concept of the CDE is to provide a central repository of information, be that graphical or data based. This information can then be shared in a structured way, with layers of checking and approval to ensure that the information is correct and suitable.

There is no single method of delivering a Common Data Environment. It can be based on the use of folders, use of an Electronic Document Management System (EDMS) or a bespoke cloud-based solution. It will depend on the nature and scale of the project which solution is chosen.

The choice of CDE solution can be made by the employer, their representative or the lead designer. If the employer or their representative choose the CDE solution, then this should be stated in the Employer’s Information Requirements (EIR). If the lead designer chooses, then this should be stated in the BIM Execution Plan (BEP).

It is important for all actors on a project to engage with and use the CDE. It will be the single source of truth that designers, constructors, manufacturers and facility managers require to perform their duties.

Associated publications:
The full set of titles within the Digital Engineering Series, so far published as at July 2017, are listed below. Each is linked to the appropriate page of our website:

We have also provided templates that should help with organise Model Review Meetings, which are available here: 

Model Review Meeting Agenda
Model Review Meeting Minutes


Index of Figures
PAS 1192-2

General Principles
CDE Sections
   Work in Progress
      Model suitability check
      Standard Method and Procedure check
      Technical content check
      COBie completeness check
      Drawing extract checks
      Approval by the task team manager
       Client Shared
       Client Shared
   Extended CDE

Appendix 1 – Further Reading

Index of Figures
Figure 1 - CDE Sections
Figure 2 - Fan Coil Clash
Figure 3 - Fan Coil Clash Resolved
Figure 4 - Revision System

Carl Collins (Author) – Consultant to CIBSE

Other acknowledgements
Martin Howe (SES Engineering), Dwight Wilson (Imtech Engineering Services)