For many decades, companies have used three dimensional (3-D) construction modelling for internal purposes, generally to generate fabrication drawings. The BIM process takes a simple 3-D model to the next level, combining 3-D representations of projects with different layers of information, from building and equipment geometry through to sustainability and facility management information. BIM also expands the ownership of the information, from something that is created by the designer for the use of the constructors to a collaborative project management tool.
All of the teams involved in the construction, fitting and management of a facility can become involved in the design, creation and maintenance using BIM; it even has potential in retrofit and refurbishment projects.