Realising the advantages of B.I.M.

Transcription

1 Realising the advantages of B.I.M. Presented by: Philip J Calvert 23 rd April 2013

2 Introduction The A.G Coombs Group - Privately owned group of companies with 65 years operation permanent staff across Victoria, NSW and Queensland. - Whole of Life capability, incorporating Advisory, Small Projects, Major Construction, ICA, Service & Maintenance, and Technical Facility Management. Philip Calvert BIM Coordination Leader - UQ Oral Health Centre Project Project Manager - Technical Building Services Specialist Management of high profile, cutting edge & technically biased projects incorporating BIM, Trigeneration, Natural Ventilation, Green Star, Health Services, Data Centres and Critical Infrastructure Automation in Australia and the UK.

3 The start of a journey... A successful journey is as much about the map as it is the mode of transport... = +

4 Overview BIM a process, not a product Where are the advantages? Proven BIM methods that improve on-site efficiency. Key steps to maximising a project s BIM advantages. Conclusions

5 So what is BIM? BIM is a process utilising 3D modelling software and databases to continuously and accurately develop, communicate and record a facility s data throughout the phases of its lifecycle. The BIM process is a direct evolution of traditional construction processes through the application of technology.

6 The advantages of BIM BIM offers industry participants and client s benefits including: Reduced Project Cost True accuracy of design Efficient collaboration Improved install methods Reduced on-site rework Improved scope clarity + Advanced data retention & retrieval capability

7 Where does BIM add most value? TYPICAL PORTION OF OVERALL PROJECT BUDGET Concept 0.9%* Design 8.1%* Construction 91% Structure 57%*, Services 34%* Concept Basic Design Detailed Design DESIGN DOCUMENTED (2D) Services Coordination Shop Drawing PHYSICAL BUILD Review & Revise Verify Traditional (Design Then Build) Potential Cost Improvement : ~ 5% -10% Concept Basic Design Detailed Design R & R SIMULATED BUILD (3D) Services Coordinatio n Shop Drawing PHYSICAL ASSEMBLY Verify BIM (Simulate Then Assemble) In $ terms: - Typical Example: Brisbane 14 storey, 5 star, comm high rise (28,200m2 GFA) - Traditional cost estimate = $100m (+ fit-out) - Potential BIM Efficiency Gain = 5 to 10 % of $92m = $4.6m to $9.2m (est) * Percentage Spilt of Typical Project Costs - RLB Data 2009

8 Examples of Site Benefits Clash Prevention & Resolution A major benefit of BIM during construction is reduction in abortive works. Regardless of the origin of a clash, its negative impact on all stakeholders in terms of : -on-site review time -re-design costs -meeting time - abortive works...cannot be stressed highly enough.

9 Improving On-site Efficiency Pre-casting Fixings Pre-Fabricated Assemblies UQ Oral Health Centre, 3,100 precast hangers AG Coombs 2012 Peter Doherty Institute Prefabricated Multiservice Riser 18 x Self-Supporting Steel Sections Site Installation Time: 4 days AG Coombs 2012

10 Improving On-site Efficiency BIM to Field Applying Tablet based technologies for model reviews, measurements, and installation records AG Coombs 2013

11 Where does BIM add most value? TYPICAL PORTION OF OVERALL PROJECT BUDGET Concept 0.9%* Design 8.1%* Construction 91% Structure 57%*, Services 34%* Concept Basic Design Detailed Design DESIGN DOCUMENTED (2D) Services Coordination Shop Drawing PHYSICAL BUILD Review & Revise Verify Traditional (Design Then Build) Potential Cost Improvement : ~ 5% -10% Current Improvement : < 1% Concept Basic Design Detailed Design R & R SIMULATED BUILD (3D) Services Coordinatio n Shop Drawing PHYSICAL ASSEMBLY Verify BIM (Simulate Then Assemble) In $ terms: Less than $900k of the $9m on offer - Typical Example: Brisbane 14 storey, 5 star, comm high rise (28,200m2 GFA) - Traditional cost estimate = $100m (+ fit-out) - Potential BIM Efficiency Gain = 5 to 10 % of $92m = $4.6m to $9.2m (est) * Percentage Spilt of Typical Project Costs - RLB Data 2009

12 Getting our processes right

13 Focusing on fundamentals 1. Definition of Services Zones during the initial design phase is still a fundamental requirement. 2. If traditional services zones can t be accommodated, areas need to be precoordinated during the initial design phase to ensure that spatial allowances are sufficient. 3. Riser positioning and sizing is fundamental to any workable design. 3D modelling assists a project team to identify and rectify significant spatial issues before they become a co-ordination issue.

14 Quality is Everything 1. Reference models and co-ordinated layouts (RCPs) must be accurate and maintained. 2. Operational System designs must be complete and should include basic performance data as a minimum. 3. Any amended elements must be updated in 3D by the responsible party. Supplementary 2D documentation is unusable for 3D co-ordination. Responsibility for the accuracy and quality of any individual model must contractually rest with the current editing party.

15 Adding value with maximised efficiency 1. The project must have a common agreed platform (IFC or alternative) that allows stakeholders to easily share model data between design tools. 2. The intention is that each stakeholder adds only the appropriate amount of additional value to the model in each phase. No more, no less. 3. Application of common standards (such as BIM-MEP AUS ) are critical to allow the efficient and constant development of data by subsequent stakeholders. Most importantly, a project s contractual scope must clearly identify the obligations, deliverables and handover points for each team member with direct relation to the project s defined BIM process.

16 Conclusions As an industry, BIM allows us to pass on true benefits to our clients. These advantages can only be achieved if we: Maintain adherence to fundamental design principles. Ensure the quality of data is maintained at all stages. Maximise the efficient transfer of data throughout the entire BIM process.

17 BIM How good is your map? + = + X =

18 The A.G. Coombs Group Together we achieve the extraordinary! A.G. Coombs Pty Ltd (Qld) 54 Berwick St Fortitude Valley, QLD 4006 P: For more information, please go to: