The exchange of information is fundamental to the successful use of a BIM model during the design, construction and operation of a building. To be useful the BIM model must always be accurate, up-to-date and accessible to those that need the information.
Common Information Structures and Procedures
For the model to be kept up to date the information must be received and easily shared by those who need to use it; which means it must be created, stored and shared using common processes and protocols. These are specified in the widely recognised Information Standards PAS 1192:2, PAS 1192:3 and BS 1192:4.
Asset Information Requirements (AIRs)
The next stage is to define what information is required about any given asset, how it should be structured and how it will be exchanged. This is defined in the Asset Information Requirements and must be appropriate to the building or asset. It also needs to provide useful information in a practical format that informs the facilities management team and enables them to improve the operation and maintenance of their building.
COBie Information Exchange
COBie is the information exchange specified by the UK Government on all mandated projects, however other systems are used such as the IFC (Industry Formation Classes) which was registered with the International Standardisation Organisation in 2013 as ISO16739 ‘Industry Foundation Classes (IFC) for data sharing in the construction and facility management industries.’
Updating Model Information using Field BIM
Field BIM is the process by which the PIM (Project Information Model) is updated as the construction takes place or during routine maintenance work once the building is in operation.
Field BIM facilitates the capture of ‘as constructed’ data which provides a significant contribution to the final information needed to support COBie.
Maintenance teams are also capable of capturing essential information that can help keep the Asset Information Model up to date.