TECHNICAL | BUILDING INFORMATION MODELLING
Above: Depiction of a construction of an additional SEM connection (in green) relative to the construction site layout for the UK Vauxhall Station Upgrade project
CONCEIVING OF BIM AND ITS BENEFITS
The infrastructure sector is enormous, the assets it creates are many in type and scale, and vast supply chains facilitate their planning, design, construction, operation and maintenance. Different perspectives across the industry and among its players lead to a diverging understanding of what BIM is, and therefore answering what is BIM is important. This is not helped by the fact that BIM, i.e., Building
Information Modelling, has differing definitions depending on where one looks. The tunnelling sector commonly uses definitions
from the International Organization for Standardization’s (ISO) 19650 series, ‘Organization and digitization of information about buildings and civil engineering works, including building information modelling (BIM): Information management using building information modelling’. In these standards, ISO defines BIM to be:
“The use of a shared digital representation of a built
asset to facilitate design, construction and operation processes to form a reliable basis for decisions.” In contrast, the German Tunnelling Committee
(DAUB), in its more tunnelling-focused document ‘BIM in Tunnelling’, defines BIM as the following: “[A] collaborative method based on digital models for
the design, implementation and operation of facilities over their entire life cycle.” While these definitions are similar, they are not the
same. Moreover, description of BIM as a “use of a shared digital representation …” or as a “collaborative method” can further obscure things. These broadly worded definitions make it difficult for non-BIM professionals to immediately understand what BIM is and, in particular, what it is when utilised within a particular sector, such as developing underground space and undertaking tunnel design and construction.
Above: Planned Hudson River Tunnel alignment relative to existing buildings in New Jersey 16 | June 2023
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