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Spar2010murphy

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Spar 2010 Presentation

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Spar2010murphy

  1. 1. LiDAR – BIM Exceeding our Clients Needs Tina Murphy, P.E. February 9, 2010
  2. 2. Agenda • Motivation • Adopting BIM • Pilot Project • Future Value of BIM
  3. 3. Motivation Municipal Client’s Problem Demand on Regulatory time line in which to comply Capacity Time Required to complete traditional Design Bid Build process Permitting Engineering Bid Construction and re-engineering
  4. 4. Motivation Municipal Client’s Solution Demand on Regulatory time line in which to comply Capacity Time Required to complete Design Build process 60% Plans break ground Permitting Engineering Construction and re-engineering
  5. 5. Motivation Municipal Client’s Solution Municipalities are looking to Design Build relationships to meet their Regulatory requirements What does Design Build give our client? • Single point accountability • Time Savings Scope • Costs Savings Design Build costs our client in the form of trade-off among scope, schedule, and quality. Schedule Costs
  6. 6. Adopting BIM Our Solution BIM is our foundation for Virtual Design and Construction (VDC) Scope What does VDC give our client? It gives…. • Single point accountability • Increased time Savings • Increased cost Savings Schedule Costs • Minimized the trade-off among scope, schedule, and quality (change orders) • Useable final product
  7. 7. Pilot Project • Pilot project was the rehabilitation of a 32 MGD Water Treatment Plant constructed in 1940s – Most of the structures and equipment are still original – Approximately 80 projects totaling a construction estimate of $70 million • Pilot completed in summer 2009 • Full company roll out end of 2010
  8. 8. Pilot Project - Expectations • Revit MEP = BIM = More Software © • Insert LiDAR into Revit © • Complete virtual model • Easily document the process • Be able to calculate Return on Investment (ROI)
  9. 9. Pilot Project - The Starting Point • The initial design effort began with as-built plans and site investigations – Construction plans from the 1940s – Site photos
  10. 10. Pilot Project - Data Acquisition using LiDAR • LiDAR was employed to capture the intricate network of pipes and mechanical equipment
  11. 11. Pilot Project - 3D Modeling with Revit © • The building structure was modeled in Revit MEP from 1940s construction plans © • The Revit model was used as a base for © the mechanical model being developed from 3D laser scanning effort
  12. 12. Pilot Project - Data Acquisition using LiDAR • The scan data was delivered as TruView © and 3D AutoCAD files ©
  13. 13. Pilot Project -TruView • TruView was used to validate data in CAD Model • Dimension miscellaneous data • Replaced the printed plans • Discovery tool – Modifications occurring during scan – Some of the columns interfered with the proposed construction – Located an access hatch to be used during construction – Penetrations through ceiling for conduit
  14. 14. Pilot Project - TruView Modifications occurring during scan
  15. 15. Pilot Project -TruView Located access hatch
  16. 16. Pilot Project - TruView Penetrations through ceiling for conduit
  17. 17. Pilot Project - The Complete As- Built • The 3D CAD model was then referenced into the Revit model ©
  18. 18. Pilot Project - deliverable • Tying into existing equipment was done with greater confidence • Traditional design deliverables were easily created
  19. 19. Pilot Project - Deliverable • The completed Revit model was used to © print the 3D model
  20. 20. Pilot Project - Challenges • Communication barriers – Engineer misunderstanding – Unrealistic client expectations – Revit expert had no experience with piping – Vendors are confused / not willing to give up information • Revit MEP does not equal BIM ©
  21. 21. Pilot Project - Challenges • LiDAR data does not directly insert into Revit © – Pipe runs had to be re-digitized in Revit – Revit MEP© would kick back error messages when we tried to duplicate existing conditions • There was no easy or obvious way to measure ROI or soft cost savings
  22. 22. Pilot Project - Discoveries • The whole process was more complicated than originally assumed • Support from sub-consultant exceeded expectations • Greater flexibility to work on the project – access to all data in and out of the office. • We are confident in the measurements and not hoping they are right
  23. 23. Pilot Project - Lessons Learned • True and accurate as-builts are not entirely desirable • When communicating to new clients we need to show them not tell them • Standards, details, and project work flow need to be recreated • BIM adoption needs to be done slowly and carefully
  24. 24. Future value of BIM BIM is the foundation of Virtual Design and Construction BIM is our foundation for Virtual Design and Construction (VDC) What does VDC give our client? • Single point accountability • Increased time savings • Increased cost savings • Minimizes the trade-off among scope, schedule, and quality • Useable final product
  25. 25. Future value of BIM 3D model Facilities Cost Management Estimating Virtual Design and Construction Virtual Schedule Mockups Integration Facilities Analysis

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