Abell & Cleland House is a prestigious new residential development in the heart of Westminster. In September 2012 Cadnet was appointed to build a Stage D MEP model for the project by URS Scott Wilson. In early 2013 a second appointment was received to complete the Stage E model including additional details in line with the design progression.
The project required the modelling of approximately 300 apartments and centralised plant areas to Stage D and E in less than six months. This included the generation of the MEP drawing sheets from each of the apartment models.
The Stage D and E models contained more than 100 separate models that were merged to form the final composite design. The project required a methodical and granular approach, as the architectural and structural models alone amounted to a size that the software was unable to handle.
To provide manageable file sizes, Cadnet carved the envelope and structural models into individual files aligned with corresponding works packages. The MEP data was then developed within these files from the redline mark-ups supplied by the client.
A standard library was created to ensure commonality across the modelling teams for primary plant and equipment, fixtures, fittings and systems.
To aid the MEP coordination Cadnet then issued a “Guide for Developing BIM data” to the client which defined the information delivery sequence in line with the MEP modelling process.
Data received from the client was validated before modelling began. The completed service models were collated in Naviswork enabling potential clashes to be reviewed and resolved. 2D instillation drawings were generated from the approved models and annotated with the client’s requirements. These were supplied to URS Scott Wilson’s engineers for issue.
While the project did not have a specific FM deliverable, Cadnet included a basic data structure for all modelled elements should the requirement arise for a structured data drop at any stage.
Delivery of this large MEP model in less than six months proved that complex projects can be delivered in BIM when carefully planned, using a comprehensive coordination programme, common information standards and the application of competent capable resources.