What is BIM ? Building information modelling (BIM) is the process of generating and managing building data during its life cycle A Building Information Model (BIM) is a digital representation of physical and functional characteristics of a building Building information modeling supports the continuous and immediate availability of project design scope, schedule, and cost information that is high quality, reliable, integrated, and fully coordinated.
Construction Operations Building Information Exchange (COBie) MARCH 2012Data Drop 1: REQUIREMENTS and CONSTRAINTSData Drop 2: OUTLINE SOLUTIONData Drop 3: CONSTRUCTION INFORMATIONData Drop 4: OPERATIONS and MAINTENANCE INFORMATIONData Drop 5 (and subsequent drops): POST OCCUPANCY VALIDATIONINFORMATION and ONGOING O&M
BIM is 3d co-ordinated CAD? + Linked Data? + Collaboration?
• BIM is expensive & only for large organisations • A Single license of ArchiCAD or Revit is about £3000 – 4000 but upgrades and cross grades normally reduce the price considerably. • Easier to implement in a small organisation – less change management • Lots of free to use co-ordination tools – eg Tekla BIMsight
• BIM – everybody has to use Revit • Interoperability – IFC format • Free viewing and co-ordination tools
• BIM is only for Consultants and Contractors • Client requirements and design engagement • Project managers and cost consultants • Facilities and building managers • Asset managers • Lifecycle costing
• BIM – its another consultant like CDM• Short term opportunities for co-ordinator role while industry gears up• Very large schemes might need a separate specialist co-ordination role
• BIM – just outsource it as a deliverable• Not quite the point of collaborative working• No benefits, just added cost and duplication• Short termism.
• BIM is only compulsory on large schemes • No minimum project value after 2016 – only a definition on ROI • Definition of public buildings still unclear but err on the side of caution Cabinet Office line is that by 2016 most informed private sector clients will be mandating too.• BIM is only for new build and big buildings • 3d building surveys 10-20% more than traditional • Smaller schemes easier to co-ordinate • Easier to resolve complex existing spaces in 3d • All of the scheduling is just as relevant
• BIM stifles design creativity Used appropriately it is no different that traditional CAD or a drawing board
Missed the BIM Boat ? – don’t worry… yet ! • Only the very big multinational contractors have a handle on BIM during construction phase. • Many consultants are still paying lip service to BIM with pilots at present. • Very few consultants where level 1 and 2 BIM is normal.