1. Copyright  2007 4D Checker: Analyzing Renovation Schedules for Requirements Compliance CIFE TAC 2007 1 4D Checker: Analyzing Renovation Schedules for Requirements Compliance Martin Fischer Peggy Ho

2. Copyright  2007 4D Checker: Analyzing Renovation Schedules for Requirements Compliance CIFE TAC 2007 2 The Big Idea: 4D Requirements Checking 3D Design: 4D Phasing Schedules: Big Idea Problems Intuition POD 4D Checker Tasks Goals

3. Copyright  2007 4D Checker: Analyzing Renovation Schedules for Requirements Compliance CIFE TAC 2007 3 Definitions Phasing Schedule: –Developed during design –Show high-level construction activities (e.g., “Build-out Level 9) –Show how occupants move (e.g., “Move Tenant A to Level 9”) Swing space –Temporary space for occupants –Both inside and outside of building Big Idea Problems Intuition POD 4D Checker Tasks Goals

4. Copyright  2007 4D Checker: Analyzing Renovation Schedules for Requirements Compliance CIFE TAC 2007 4 Observed Problem: Three challenges in the renovation planning process Develop Schedule Check Schedule Change (Req, Scope, Design) Challenge 1 Challenge 2 Challenge 3 Challenge 1. Difficult to keep track of: –Multiple Stakeholders –Multiple Requirements Challenge 2. Difficult to evaluate a schedule –What are the metrics? Challenge 3. Difficult to evaluate impact of changes –What parts of the schedule can be re-used? Big Idea Problems Intuition POD 4D Checker Tasks Goals

5. Copyright  2007 4D Checker: Analyzing Renovation Schedules for Requirements Compliance CIFE TAC 2007 5 Project A. Oops, NOT everyone fits in the building! Big Idea Problems Intuition POD 4D Checker Tasks Goals Pictures Removed. Please contact Peggy (peggyhho@stanford.edu) directly for more information.peggyhho@stanford.edu

6. Copyright  2007 4D Checker: Analyzing Renovation Schedules for Requirements Compliance CIFE TAC 2007 6 How to compare renovation schedules? Big Idea Problems Intuition POD 4D Checker Tasks Goals Schedule using a flow chart Schedule using Microsoft Excel Schedule using Microsoft Word Note: Schedules were removed to maintain anonymity of project

7. Copyright  2007 4D Checker: Analyzing Renovation Schedules for Requirements Compliance CIFE TAC 2007 7 Project B. What parts of this schedule can the project manager reuse? ? Big Idea Problems Intuition POD 4D Checker Tasks Goals How does a change in façade design affect the schedule? Façade design 1 Façade design 2

8. Copyright  2007 4D Checker: Analyzing Renovation Schedules for Requirements Compliance CIFE TAC 2007 8 Metrics User-Entered Information Reasoning methods to “check” schedule Requirements (Occupant & Construction) Building Configuration Phasing Schedule Big Idea: Our “4D Checker” will help to solve these problems Satisfaction Of Requirements Cost Duration Efficiency Big Idea Problems Intuition POD 4D Checker Tasks Goals

9. Copyright  2007 4D Checker: Analyzing Renovation Schedules for Requirements Compliance CIFE TAC 2007 9 Intuition: Building configuration, requirements, and schedule are fundamental to renovation planning Court and Non-court occupants need building space Project A User-Entered Information Requirements (Occupant & Construction) Building Configuration Phasing Schedule Big Idea Problems Intuition POD 4D Checker Tasks Goals Pictures Removed. Please contact Peggy (peggyhho@stanford.edu) directly for more information.peggyhho@stanford.edu

10. Copyright  2007 4D Checker: Analyzing Renovation Schedules for Requirements Compliance CIFE TAC 2007 10 Intuition: Planners check by looking at the building configuration over time Project A Project B Project C Reasoning methods to “check” schedule Big Idea Problems Intuition POD 4D Checker Tasks Goals Automate this process! Pictures Removed. Please contact Peggy (peggyhho@stanford.edu) directly for more information.peggyhho@stanford.edu

11. Copyright  2007 4D Checker: Analyzing Renovation Schedules for Requirements Compliance CIFE TAC 2007 11 Intuition: Planners need to evaluate the schedule from many perspectives Project C Project A Metrics Satisfaction Of Requirements Cost Duration Efficiency Big Idea Problems Intuition POD 4D Checker Tasks Goals

12. Copyright  2007 4D Checker: Analyzing Renovation Schedules for Requirements Compliance CIFE TAC 2007 12 Limitations of current practice Where are the occupants moving to? Track number of courtrooms? Requirements Schedule Schedule impact if a requirement changes? Occupant Move Big Idea Problems Intuition POD 4D Checker Tasks Goals

13. Copyright  2007 4D Checker: Analyzing Renovation Schedules for Requirements Compliance CIFE TAC 2007 13 Building on Previous CIFE Research 1.4D Process Representation: Represent construction activities in 4D (Aalami 1998, Darwiche 1989) 2.4D Analysis: Analyze construction activities for space conflicts (Akinci 2002) 3.Requirements Models: Manage requirements in design (Kivineimi 2005) 4.Track occupants over time 5.Track spaces over time 6.Dynamically understand schedule impacts of changing requirements 7.Check project-specific requirements 8.Understand what, how, and when requirements are not satisfied 9.Comprehensively evaluate the schedule Big Idea Problems Intuition POD 4D Checker Tasks Goals

14. Copyright  2007 4D Checker: Analyzing Renovation Schedules for Requirements Compliance CIFE TAC 2007 14 User Entered Requirements The 4D Checking Process Schedule Building Database of building attributes over time Requirements Database of Effective Requirements over time Big Idea Problems Intuition POD 4D Checker Tasks Goals

15. Copyright  2007 4D Checker: Analyzing Renovation Schedules for Requirements Compliance CIFE TAC 2007 15 Impact: Planners can see how and when requirements are not satisfied Big Idea Problems Intuition POD 4D Checker Tasks Goals

16. Copyright  2007 4D Checker: Analyzing Renovation Schedules for Requirements Compliance CIFE TAC 2007 16 Impact: Planners can comprehensively evaluate and compare the schedule, automatically Planners can quickly and comprehensively: Track requirements, occupants, and spaces Evaluate schedules with specific metrics Evaluate impacts of changes Big Idea Problems Intuition POD 4D Checker Tasks Goals

17. Copyright  2007 4D Checker: Analyzing Renovation Schedules for Requirements Compliance CIFE TAC 2007 17 Research Methodology & Tasks Task 1. Conduct retrospective case studies (Prior to seed funding year) Understand the current limitations of using 4D for renovation planning Gather specific metrics and requirements used by planners Deliverable: 3-5 case studies on renovation planning Task 2. Develop representation and reasoning methods (Sept 2007 – Mar 2008) Find best representation for requirements and metrics Find reasoning methods that are able to be implemented Deliverable: A collection of representation and reasoning methods Big Idea Problems Intuition POD 4D Checker Tasks Goals = Opportunity for CIFE Member Involvement

18. Copyright  2007 4D Checker: Analyzing Renovation Schedules for Requirements Compliance CIFE TAC 2007 18 The 4D Checking Process involves several reasoning methods Task 3. Develop prototype system (Primary Use of Funding) (Sept 2007 – June 2008) Use Commonpoint 4D as development platform Enlist CS student to help with actual programming Deliverable: A prototype system developed in Commonpoint 4D Big Idea Problems Intuition POD 4D Checker Tasks Goals Reasoning methods required to: Create building attribute database over time Create requirements database over time Analyze each requirement Analyze each evaluation metric Implement user interface The programmer will: Consult on implementation strategies of reasoning methods  better methods Enable researchers to focus on content, not programming  more powerful data Implement code

19. Copyright  2007 4D Checker: Analyzing Renovation Schedules for Requirements Compliance CIFE TAC 2007 19 Research Methodology & Tasks Task 4. Validate method and prototype system (Jan 2008 – Sept 2008) Test system on actual renovation projects Compare system with traditional renovation planning methods Deliverable: Case studies and comparison data to show the power/generality of 4D-based analysis Task 5. Integrate prototype with other CIFE research (Sept 2008) Explore the potential of integrating VDC-based analysis and management tools Limitations highlight future research areas Deliverable: A report describing the benefits and current limitations of integrating analysis and management tools Big Idea Problems Intuition POD 4D Checker Tasks Goals = Opportunity for CIFE Member Involvement

20. Copyright  2007 4D Checker: Analyzing Renovation Schedules for Requirements Compliance CIFE TAC 2007 20 Leverage existing resources to achieve breakthrough schedule performance Previous CIFE Work 4D Process Representation (Aalami 1998, Darwiche 1989) Requirements Modeling (Kiviniemi 2005) 4D Analysis (Akinci 2002) Vision: Value-based, Breakthrough Schedule Performance 2010 Measurable Goals Integrate construction and occupant processes Automate requirement checking $$$ (GSA, NSF, SGF Funding) Big Idea Problems Intuition POD 4D Checker Tasks Goals

21. Copyright  2007 4D Checker: Analyzing Renovation Schedules for Requirements Compliance CIFE TAC 2007 21 Vision: Value-based, Breakthrough Schedule Performance 2010 Measurable Goals Integrate construction and occupant processes Automate requirement checking Leverage existing resources to achieve breakthrough schedule performance Previous CIFE Work 4D Process Representation (Aalami 1998, Darwiche 1989) Requirements Modeling (Kiviniemi 2005) 4D Analysis (Akinci 2002) $$$ (GSA, NSF, SGF Funding) $ (CIFE SEED FUNDING) More powerful data More CIFE member involvement Better Reas. Methods Big Idea Problems Intuition POD 4D Checker Tasks Goals

22. Copyright  2007 4D Checker: Analyzing Renovation Schedules for Requirements Compliance CIFE TAC 2007 22 4D Checker addresses challenges to enable planners to better manage renovation projects Big Idea Problems Intuition POD 4D Checker Tasks Goals