Welcome to Stimulating BIM seminar series

Transcription

1 Welcome to Stimulating BIM seminar series April 24th 2013: Managing what BIM does not do. July 10th 2013: A New Meaning for Building Cost September 11th 2013: Inverting the Construction Supply Chain November 20th 2013: Can Interoperability work with People

2 BIM: A New Meaning for Building Cost Professor David Boyd Birmingham School of the Built Environment

3 Seminar 1: Conclusions BIM Opportunity Understand information: Perfect but Partial View Avoid seduction of perfection; Appropriate Organisational strategy to trust data Needs sophisticated and active management

4 MSc Integrated Design and Construction Management Design and Construction Processes Business Management Organisations Organisations And People Supply Chain Integration People A critical and active approach to managing the new developments: IPD and BIM Do Job Technology Design for FM and Performance Strategic Delivery Project Building Information Modelling Management

5 Big questions? What does our costing mean? Is our costing appropriate?

6 QS BIM Cost Dalek

7 The Simple View Geometry Object Attributes IFC API ODBC Excel Computational Software Elements Quantities Design Past projects Quantities Data bases

8 Understand the differences Product model Cost Model Production Model

9 Two Axis of BIM Development Do what is Currently done Automate Engage Do something different

10 Two Axis of BIM Development Do what is Currently done Automate Replace Standardisation Capture rules; Deskilling Control Quick???? Risk: rules limited Assumptions wrong Do something different Engage Tool for improvement Supports skills Collaboration Customised Time limited Risk: human error

11 Two Axis of BIM Development Reality Do what is Currently done Automate Software Rhetoric Engage Government Rhetoric Rhetoric Do something different

12 Two Axis of BIM Development Automate Reality Do what is Currently done Rhetoric Opportunity Service Software Do something different Engage

13 Big Question 1? Can building costing be automated

14 Quantification The case for BIM Measurement Time consuming Done several times Prone to error Data difficult to manage: structure Changes difficult to manage

15 Why is construction so difficult to cost Complexity technical interdependence Organisational interdependence Competitive Market; low entry; little control Uniqueness of products Uniqueness of locations

16 Costing is a Simplification What costing What Future What is important What can be measured What calculation Experience Judgement

17 Why it works? Design Estimate Database Out-turn Learn to work with results Structure and Procedures = Repeatable Cope with Inadequacies Errors Mis-use Simplification vs complexification

18 Big Question Is it better to use a simplification that you understand than to use complexification in ignorance?

19 Understand the differences Product Model Automation = System Applied Rules Quantities Attributes Production Model Cost Model Materials Additions not modelled Groupings Interconnections Which apply Where? Estimator Applied Rules Estimator Checking Labour Rates productivity Additions Plant Site set up Auto Checking?

20 BIM Problem BIM Models simplify problem to model Then complexify with model details and functionality The assumption is the model is right and can be used correctly.

21 Still doing the same thing?

22 Why Cost? What decision Select tenderer Bid for job Control costs of changes payments Accountability: seen to be done

23 Still doing the same thing? Does it help us to do job better?

24 New reasons to cost Change and improvement Target cost driven design Target value driven design Lean production Supply chain development Social value enhancement Cost of operation Building performance

25 Cost methods Activity based costing Transaction costing Supply chain costing Social value accounting Help us to do job better!

26 The Greater Case for BIM integration detail

27 PAS1192 complete view

28 A Territory of Costings finance Asset business remediation Residual Guarantees warranties demolition Social Value Environment disposal maintenance running refurbishment Process improvement land Legal What is the value of operating my building asset?

29 7 Dimension Cost Accountant Drives BIM to deliver results Uses Multiple costing methods Understands assumptions in costing Applies costing to decisions Health check on costings Engages stakeholders in costs Develops new approaches

30 Conclusion BIM challenges: why and way Decision support: Cost to improve Do costing differently and more Costing is a simplification; Automation limited Need cost checking function Better engagement

31 Welcome to Stimulating BIM seminar series April 24th 2013: Managing what BIM does not do. July 10th 2013: A New Meaning for Building Cost September 11th 2013: Inverting the Construction Supply Chain November 20th 2013: Can Interoperability work with People