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3D Technologies (e.g., AMG) and Seamless (?) Data Flows: Impediments and Strategies

3D Technologies (e.g., AMG) and Seamless (?) Data Flows: Impediments and Strategies. TRB AFB80 Summer Committee Meeting Estes Park, CO July, 2009 Alan Vonderohe vonderohe@centurytel.net. Outline. AMG Specification Development. 3D Technologies Implementation Planning.

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3D Technologies (e.g., AMG) and Seamless (?) Data Flows: Impediments and Strategies

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  1. 3D Technologies (e.g., AMG) and Seamless (?) Data Flows: Impediments and Strategies TRB AFB80 Summer Committee Meeting Estes Park, CO July, 2009 Alan Vonderohe vonderohe@centurytel.net

  2. Outline • AMG Specification Development. • 3D Technologies Implementation Planning. • Data Flow Obstacles: Design / Contracting / Construction.

  3. Outline • How AFB80 Can Help. • Educational Aspects. • Technological Aspects. • Institutional Aspects. • Legal Aspects.

  4. AMG Subgrade Specification Development Process (WisDOT/CMSC) 2006 2009 Advisory Group Literature Review and Industry Survey Final Specification Contractor and Region Interviews Specification Framework 2nd Specification 1st Specification 2nd Pilot Projects Stakeholder Workshop 1st Pilot Projects 2008 2007

  5. Subgrade Specification Components • No subgrade stakes required. • Engineer can require reversion to conventional methods. • Contractor’s GPS work plan: • Equipment; staff qualifications; project control; site calibration and checks; equipment calibration; subgrade checks. • 3D model: • Department provides “survey package” of digital data. • 3D model building is contractor’s responsibility; 2D plans are the contract documents; initial model and revisions provided to department.

  6. Subgrade Specification Components • Site calibration: • Greater of 6 control points or 2 per mile; daily checks at independent control to be within ±0.10 ft. horizontally and ±0.05 ft. vertically. • Subgrade checks (against plans, not model): • 20 or more per roadway mile, project, or stage; randomly selected full stations; 4 of any 5 consecutive must be within ±0.10 ft. of plan elevation; engineer observes and uses for approval; engineer can make and / or require additional subgrade checks.

  7. Current and Future Expectations for AMG Specs • Specification is optional special provision replacing subgrade staking as bid item on all 2009 projects that include grading. • Will become component of general specifications for 2010 and beyond. • WisDOT will monitor performance of subgrade spec while embarking on development of spec for base course, then paving. • WisDOT deploying 3D design technology – headed towards delivery of 3D models as design product. • Training provided to 80 project engineers (2008, 2009). More training expected over next 2-3 years.

  8. 3D Technologies Implementation Planning • 2008: WisDOT implementing AMG and 3D design software and processes. • Preliminary study on wider use of 3D models throughout design and construction. • Stakeholder workshop on interim report: AMG and 3D design among larger group of 3D technologies and processes interrelated by dependencies, synergistic benefits, and shared impediments. • Undertook broader effort to develop implementation plan for 3D technologies for design and construction in general.

  9. 3D Technologies Implementation Planning • Plan components: • Vision statement. • Six Initiatives (on-going or proposed) with backgrounds, issues, stakeholders, recommendations, goals, timelines, levels of effort, priorities, benefits, relationships with other initiatives, and responsible parties. • Dependencies among initiatives and goals. • Umbrella management strategy.

  10. 3D Technologies Implementation Planning • Vision statement: “Adoption of 3D methods and seamless data flows throughout initial survey, design, contracting, construction, as-built survey, payment, and other applications included within the infrastructure lifecycle.” • Opens the door beyond design and construction.

  11. Initiatives, Goals, Timelines, Priorities

  12. Initiatives, Goals, Timelines, Priorities

  13. 3D Technologies Implementation Planning • Dependencies among initiatives:

  14. Dependencies among goals.

  15. Management Strategy • Recommendations: • Appoint a 3D Technologies Management Group, chaired by a bureau director: • Coordinates recommended activities. • Provides reporting structure. • Keeps upper-level management informed. • Advocates for overall effort. • Develops outreach mechanisms. • Management Group includes at least one representative from each initiative. • Implementation plan updated at least annually by Management Group.

  16. Seamless Data Flows: Impediments and Strategies • Nationwide study funded by Center for Freight Infrastructure Research and Education (CFIRE) at UW-Madison. Project is mid-stream. • Target is this predicament: Here’s what we do. Here’s what we should do.

  17. Seamless Data Flows: Impediments and Strategies • Approach: • Literature search. • Nationwide survey. • 3-4 case studies. • Earthwork volumes methods comparison (average-end-area vs surface-to-surface). • Design software functionality descriptions. • Guidelines and recommendations.

  18. Web-Based Survey • Being tested by AASHTO Technology Implementation Group on AMG. • Will go to remaining 42 states by mid-August. • Three sections (37 questions): Design, Contracting, Construction. • 30-45 minutes to complete.

  19. Availability of Materials • Project reports, specification, guidance language, implementation plan, and training materials available right here on my thumb drive and all the time at • http://cmsc.engr.wisc.edu/reports.html

  20. How This Committee Can Help • Four areas: • Educational. • Technological. • Institutional. • Legal.

  21. Educational Needs • Principles and practice of: • RTK GNSS positioning. • CORS-based RTK positioning. • Automated machine guidance. • Target audience: • Project engineers and contractors. • Recall that many engineering curricula no longer include courses in even basic surveying. • Web-based delivery for wide access.

  22. Technological Needs • Test and demonstration of CORS support for AMG. • QA/QC procedures for AMG and associated model specs. • Guidelines / framework for state-level development of 3D model content and format standards. • Guidelines for engineering-scale DTM data collection.

  23. Institutional Needs • Benefits of AMG to state DOTs and, ultimately, taxpayers. • Are the productivity gains realized by contractors passed on to DOTs? • Are the benefits to DOTs tangible and quantifiable? • Why should DOTs develop specifications for AMG?

  24. Legal Needs “The downside is that if the model is expressly subordinate to traditional construction documents, the model cannot be relied upon during the pricing and construction process…” Thomson and Miner (2006), in reference to building information modeling (BIM)

  25. Stay Abreast of and Support NCHRP 10-77 (pending): Use of Automated Machine Guidance (AMG) within the Transportation Industry. “The objective of this research is to develop guidelines for use of AMG…guidelines should (1) include technical procurement specifications for AMG technology; (2) provide guidance on use of such technology in construction projects; and (3) address implementation of AMG technology into construction techniques (including provision of electronic files and models to support the AMG process).” TRB Website

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