Guide to Using the RIBA Plan of Work 2013 - Other - Page 74
Guide to Using the RIBA Plan of Work 2013
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Level 1 BIM acknowledges the increased use of 2D and 3D information. For
architects, 3D has increasingly been used as a conceptual design tool for analysis
and development of more complex geometries and for visualisation of the finished
project. This form of BIM, where only one party utilises the benefits of the model,
is frequently referred to as ‘lonely BIM’. With L1, the use of 3D models by trade
contractors also became more commonplace, with, for example, mechanical and
electrical (M&E) contractors embracing BIM to enhance their design processes
and to assist in the resolution of coordination issues during the design phase
rather than waiting for the design to be realised on site. In terms of processes, L1
embraced the need for Common Standards to sit alongside design processes,
including BS 1192:2007, Collaborative production of architectural, engineering and
construction information – Code of practice.
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Level 1 (L1)
Level 2 (L2)
Level 2 BIM requires the production of 3D information models by all key members
of the collaborative project team. However, these models need not co-exist in a
single model. By understanding and utilising BS 1192:2007, designers can ensure
that each designer’s model progresses in a logical manner before it is used by
another designer or a designing subcontractor within the federated model (which
combines the individual design team members' models). It is not anticipated
that the legal, contractual or insurance issues will change for L2 but it is fair to
say that L2 BIM does expose some of the deficiencies of current contractual
documentation. For example, the project roles need greater consideration and the
allocation of design responsibilities between the various designers and contracting
parties has to be clearer. The outputs, or Information Exchanges, at each stage
will also require greater definition. L2 BIM requires better integration of the design
team and the designing subcontractors, with collaborative project teams adopting
Common Standards under new forms of procurement that employ ‘plug and play’
working methods.
Level 3 (L3)
With L2 acting as the boundary between analogue and digital processes, it is
likely that there will be an evolution to L3 BIM rather than a leap. The boundary
between L2 and L3 will see the development of:
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