BIM


Heathrow Terminal 2B has become a beacon for design


engineers eager to use BIM in their projects. Adrian Timmins


and Frank Connolly


explain how they used it to their advantage


during the design and construction process


40 CIBSE Journal June 2013 A


TAKES OFF


t more than half a kilometre long, including a baggage handling area in the basement with enough capacity to fi ll 250


Olympic swimming pools, Heathrow Terminal 2B (T2B) is the largest fully airside project to be constructed under Heathrow’s masterplan. T2B was engineered and built using experience gained from the construction of Terminal 5, with both the client, Heathrow Airport Limited (HAL) – formerly BAA – and the complex-build integrator, Balfour Beatty Group, working closely throughout. This collaborative stakeholder and delivery team agreed that 3D CAD coordination and, ultimately, an enhanced data model, was


required for the design and construction of the terminal. This meant that the construction team


used early building information modelling (BIM) to identify potential mechanical, electrical and plumbing (MEP) elements that could be designed for prefabrication or Designed for Manufacture and Assembly offsite (DfMA).


Phases of construction The construction of the terminal pier was split into two phases; design of phase one – one third of the pier (excluding the basement) – started in 2005 and became operational in 2009. Grimshaw carried out the architectural


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