Last edited 15 Sep 2021

BIM level 2

NB BIM Level 2 was superseded by the UK BIM Framework in 2018.

Building Information Modelling (BIM) is a very broad term that describes the process of creating and managing a digital model of a building or other facility such as a bridge, highway, tunnel and so on.

There are a number of 'levels of maturity' of BIM:

In the UK, the Government Construction Strategy published in May 2011, stated that the '...Government will require fully collaborative 3D BIM (with all project and asset information, documentation and data being electronic) as a minimum by 2016'. This represents a minimum requirement for level 2 BIM on centrally-procured public projects from April 2016.

The processes necessary to achieve level 2 BIM are set out in:

These Publicly-Available Specifications are supported by a number of protocols, standards and tools:

For more information, see BIM resources.

Very broadly, the approach required by PAS 1192-2 ensures that appropriate information is created in a suitable format at the right time so that better decisions can be made throughout the design, construction and operation of built assets. The information is described in the Employer's Information Requirements (EIR).

To ensure projects are properly validated and controlled as they develop, data is extracted from the evolving building information model and submitted to the employer at key milestones. This submission of data is described as a 'data drop' or 'information exchange'.

Generally, data drops are aligned to project stages, and the information required reflects the level of development that the project should have reached by that stage. This might be considered analogous a stage report on a conventional project.

Data drops are likely to include:

The BIM Toolkit can be used by the employer to help define the level of definition required in the model at key data drops and then to verify that the required data is present.

NB: It is thought that in parallel to the roll-out of BIM, the government will require adoption of the Government Soft Landings protocol (GSL) for central government projects. Soft landings is a strategy adopted to ensure the transition from construction to occupation is 'bump-free' and that operational performance is optimised.

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I note the Government Construction Strategy required fully collaborative 3D BIM by 2016.

Does anyone have performance figures in achieving this target?

Were damages recovered from those that did not achieve?

How is the Government Soft Landings protocol being applied to eg Palace of Westminster project?

PS I ticked the box below to verify I am not a robot. Why is that required?

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