According to BSI Group, BIM is a process for creating and managing all of the information on a project through the whole life cycle of a built asset, from initial design to construction, maintaining and finally decommissioning through digital modelling.
BIM is all about collaboration - between engineers, owners, architects and contractors in a three-dimensional virtual construction environment (shared data environment), and it shares information across these disciplines.
BIM allows design and construction teams to communicate about design and coordinate information across different levels that has been unseen before.
This information remains with the project, from before beginning construction, right throughout its lifetime.
It also helps to analyse any potential impacts.
The use of BIM can be in a wide range of projects such as a new building or railway infrastructure.
The use goes beyond the planning and design phase of the project, extending throughout the building life cycle, supporting processes including cost management, construction management, project management and facility operation.