PAR 1085 – SOUTH SECONDARY IMPROVEMENTS PROJECT A 4D GIANT

1. PAR 1085 – SOUTH SECONDARY IMPROVEMENTS PROJECTA 4D GIANT Eric M. Wetzel Carollo Engineers, Inc. Bentley Be Inspired Awards November 13, 2012

2. Outline • PAR 1085 South Secondary Improvements Project • What is 4D? • Building the 4D Model • 4D Visualization • The Benefits • Summary • Questions South Secondary Improvements Project

3. South Secondary Improvements Project Metro Wastewater Reclamation District Robert W. Hite Treatment Facility (The District)

4. South Secondary Improvements Project • $136 million w/ potential $1.8 million bonus for early completion • Meets new wastewater discharge criteria and adds capacity • Very tight schedule to meet permit compliance

5. Carollo Engineers’ Role • Design Engineer & Owner’s Representative during construction • Review Contractor’s construction schedule to verify compliance with the Contract • Responsible for 3D and 4D models

6. South Secondary Improvements Project What is 4D?

7. What is 4D? • 4D is a tool that links a 3D CAD model with a construction schedule • The resulting 4D model allows visualization of the planned construction sequence 3D Model + Schedule = 4D Visualization

8. South Secondary Improvements Project Building the 4D Model

9. 3D Model • Software Used • Bentley MicrostationV8XM • Bentley Architecture V8XM • Bentley Structural V8XM • PlantSpace Design Series V8XM • InRoads XM • ProjectWise V8i • ProjectWise InterPlot • Navigator V8i • 65 Total Models • Anything above 2” pipe was modeled • 99 Reference Files • Completed during the design phase • Finalist – Be Inspired Awards 2011

10. 3D Model Elements • To achieve a 4D visualization, the 3D model must be designed into constructible elements • Construction Joints • Pipe Joints • 3D model must match the depth of the construction schedule

11. Construction Schedule Structural Drawings vs. Construction Schedule • Software: Primavera P6v7.0 • Extremely detailed consisting of 12,143 activities

12. Linking the Model and Schedule • Import accepted Primavera P6 Schedule into Bentley Navigator V8i • Link activities in Schedule to Item Sets in the Model • Drop and Drag • After Linking is complete: • Close Navigator V8i and Open linked model in Microstation • Use Animation Producer in Microstation to create image frames • Set time frame (May ‘11 – June ‘13) • Set frame duration (daily, weekly, etc.) • Import frames to Camtasia for .AVI development

13. Visualizing the Visualization • While watching the 4D visualization • Every start activity will turn the item set within the model green • Every finish activity will turn it to the model color. Yellow in this example • Example: Concrete – Rebar, Form, Pour, Cure

14. PAR 1085 South Secondary Improvements Project 4D Model – South West Blower Building

15. South Secondary Improvements Project The Benefits How does this help?

16. 4D Benefits • Tool for Risk Mitigation • 4D analysis validated Contractor’s realistic ability to obtain full bonus ($1.8 million) • Detailed review and identification of issues in the schedule

17. Example 1: Concrete Pour Sequence Compliance Schedule Bust: Wall and Slab are poured concurrently. A single bust = Potentially 14 calendar days. Schedule Bust: Wall is being poured prior to Slab

18. Example 2: Missing Activities/Links or Inappropriate Logic “A” – Schedule did not reflect updated CJs. “B” – Threshold of two facilities. Not accounted for in schedule Missing Activities/Links Upon completion of linking the schedule to the model, linked items can be turned off to show only model items not linked to an activity B A

19. Example 3: Visual Assessment of Actual vs. Planned 10/2/2012

20. 4D Benefits – Cont. • An updated 3D model for Owner’s use • Public Outreach • Identification of non-conformance with Contract • Ability to look-ahead and plan for future Work activities

21. South Secondary Improvements Project Summary

22. Summary • 4D tool mitigated significant risk associated with a complex and accelerated schedule • Minimize logic loops, missing activities, non-conformance, etc, to account & save significant time in the schedule. • Estimated at 60 working days to date • A tool to engage stakeholders without a tangible connection to the project • An updated 3D model that can be used for facility maintenance or modifications • Versatile Bentley software was utilized in all facets of 3D and 4D development • No hardware or software costs incurred to produce 4D

23. Questions? Eric M. Wetzel, LEED-AP BD+C Project Controls Carollo Engineers, Inc. 390 Interlocken Crescent, Broomfield, CO 80021 (303) 286-3047