Building T
here are many definitions of Building Information Modelling (BIM) but in simple terms it means a
collaborative understanding of a building through the use of a digital model. Modelling an asset in digital form enables those that interact with the building to optimise their actions resulting in greater whole life value of the asset. Through BIM, the UK construction
industry is undergoing its very own digital revolution. BIM is a way of working; it is information modelling and information management in a team environment. BIM creates value from the combined efforts of people, process and technology. The UK Government has identified BIM as being central to the future efficiency of the construction industry. Their Construction Strategy 2011 is a framework for a range of workstreams, all of which have the ultimate aim of reducing the cost of government construction projects by 15-20%. This framework forms the basis of the government’s BIM hypothesis: “Government as a client can
derive significant improvements in cost, value and carbon performance through the use of open sharable asset information.” The objective of the Construction Strategy 2011 is to accelerate adoption of BIM throughout the UK construction supply chain to achieve this hypothesis. The BIM requirements require a fully
Information Modelling
Modelling an asset in digital form allows for greater understanding of the building’s use, says Ian Chapman, Director of the National BIM Library.
collaborative 3D BIM (with all project and asset information, documentation and data being digital) as a minimum by 2016 for all centrally procured Government projects.
Changing the construction
industry This strategy is ambitious but it mobilised the UK construction industry to change. By 2012 a network of regional BIM hubs was established to act as the first point of contact for BIM advice to industry; the BIM Task Group website was set up to provide precise and comprehensive BIM guidance; a draft standard for the information management of construction projects was released for public consultation; technology alliances were established to foster collaborative development, BIM enabled plans of work were prepared by the professional institutions such as RIBA, and
IAN CHAPMAN
l Ian Chapman is Director of The National BIM Library at NBS and also a Director of buildingSMART UK&I. He can be contacted via Email:
ian.chapman@
thenbs.com Twitter: @ianchapmannbs Linkedin:
http://uk.linkedin.com/in/ ianchapmannbs/
120 GLOBAL OPPORTUNITY 2014 | ISSUE 01
importantly an information exchange format was defined. This exchange format is Construction Operations Building information exchange (COBie). COBie was selected as the container for non-graphical information and the reasons for its selection were pragmatic. It is cheap to implement with tools readily available and has forward compatibility with international open standards such as ISO 16739. The selection of COBie for the asset information was a key turning point as it gave focus to the all-important “I” in BIM. The information in BIM is the most valuable aspect of a digital model. By collecting information about an asset in a consistent form it can be combined with similar data from other assets and analysed. This analysis provides insight into what works well and what can be improved, which in turn leads to improvements in the value derived from the asset. The provision of COBie data
and its accompanying 3D model throughout the construction phase generate savings through greater predictability, reduced risk and better outcomes. Early BIM adoption projects have already achieved savings of around 20% during the construction phase, with some on course to make greater savings over the life of the building; future projects are targeting even greater savings.
Since 2011, BIM adoption in
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ARCHITECTURE & DESIGN
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BIM
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