Understanding the 4 pillars of BIM

Architects working in their office
Building Information Management (BIM) can be broken down into 4 distinct topics that are known as the 4 pillars of BIM.

Pillar 1: The PAS

Here is an easily understood outline of each pillar, based on Wienerberger’s extensive experience of working with BIM over a number of years.
 
The 4 PAS1192 documents provide distinct and concise guidance as to how BIM operates and cover the main topics and project lifecycle.
  • PAS1192:2 explains the key documents, processes, roles, plain language questions and how BIM works during the CAPEX phase and the delivery of the Project Information Model (PIM)
  • PAS1192:3 outlines the move into operational lifecycle and moves the model into the Asset Information Model (AIM)
  • PAS1192:4 describes COBie (Construction Operation Building Information Exchange) which is a consistent way of sharing structural data
  • PAS1192:5 is currently being written and will outline cyber security guidance notes since BIM exists on a digital platform and has the potential to expose stakeholders to a new threat, cyber crime
Many people break each PAS out as a separate BIM pillar; however since they are all relevant and exist together here at Wienerberger we believe it is useful to combine them to create 1 over-arching pillar.

Pillar 2: Government Soft Landings (GSL)

Government Soft Landings explains the requirement to be able to pass information to clients and Facilities Managers in an easy and structured way to ensure the BIM can remain effective as an operational lifecycle tool. GSL is a Government initiative that defines how this should work.

Pillar 3: Digital Plan of Works (DPoW)

As projects move into becoming digital it is essential that the processes are clearly defined and understood. DPoW’s exist for each stage of a project according to individual roles and professions, i.e. the Architectural DPoW will be different to that of an M&E contractor.
 

Pillar 4: Classification

Considering that we are moving thousands of individual components and materials into one graphical interface, all extracted into datasheets and COBie drops, then a common naming convention is essential  to ensure that all parties fully understand what the item is referring to.
 
For example, if you consider the humble door, then of course we all know what a door actually is, but does the model refer to the frame; does it include the handle, the mechanisms or the hinges? All important questions and the use of a naming convention clarifies exactly what is being seen since each object has a unique code that determines its  existence irrespective of the profession of an interested party. In short, it provides clarity and removes confusion.

 

 
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