1. Modeling, Not Drafting, a Post-Tensioned Structure Joy Beers, SE LEED AP Structural Engineer at Leo A Daly Tomas Amor Structural Engineer at HGA Image courtesy of Hobart, Yañez, Ramos, Maguey, and Martínez

2. Joy Beers Licensed SE in California LEED Accredited Professional Structural Engineer at Leo A Daly Penn State University, Bachelor and Master (1999) Using Revit for projects since 2004 Project experience with Arch and MEP models 3 day turn around on proposals Building Families for Structure and Architecture Modeling instead of drafting most elements

3. Tomas Amor Structural Engineer at HGA (4 years) Structural Technician at HGA (6 years) University of Minnesota, Bachelors Chippewa Valley Technical College, Associate Using Revit for projects since 2005 Multidisciplinary project experience in full-service firm Revit management and implementation firm-wide Building families for Revit Structure Provide training for Revit Architecture and Structure

4. Agenda Modeling Philosophy Core PT Tendon Families Development Nested Family Use and Completed Families Modeling Parking Structure and Use of Families Documenting Model and Presentation Downstream Benefits Limitations

5. Modeling Philosophy: Why model PT tendons?  Modeled elements appear in all views  Modeled elements can be tagged  Modeled elements can be seen in other models  Modeled elements can be scheduled  Consistent modeling can reduce project time

6. Modeling Philosophy: Why model PT tendons?

7. Agenda Modeling Philosophy Core PT Tendon Families Development Nested Family Use and Completed Families Modeling Parking Structure and Use of Families Documenting Model and Presentation Downstream Benefits Limitations

8. Core Families: Hand Sketch

9. Core Family: Single Span

10. Core Family: Limitations Category Parabola 10 foot limitation

11. Core Family: End Span

12. Core Family: Straight

13. Core Family: Anchorage

14. Agenda Modeling Philosophy Core PT Tendon Families Development Nested Family Use and Completed Families Modeling Parking Structure and Use of Families Documenting Model and Presentation Downstream Benefits Limitations

15. Nested Family: Multi-Span Slab Tendons

16. Completed Family: Slab Tendons

17. Completed Family: Straight Tendons

18. Completed Family: Beam Tendons

19. Agenda Modeling Philosophy Core PT Tendon Families Development Nested Family Use and Completed Families Modeling Parking Structure and Use of Families Documenting Model and Presentation Downstream Benefits Limitations

20. Use in Project: Parking Garage

21. Use in Project: Modeling the PT

22. Use in Project: Modeling mild Reinforcement

23. Agenda Modeling Philosophy Core PT Tendon Families Development Nested Family Use and Completed Families Modeling Parking Structure and Use of Families Documenting Model and Presentation Downstream Benefits Limitations

24. Use in Project: Documentation  Graphical representation in plan views  Stressing End  Dead End  Tags  Report CGS values at mid-span and supports  Report Stressing force

25. Use in Project: Documentation  Traditional vs. Modern Plans

26. Use in Project: Documentation  Detailing Stressing End Dead End

27. Agenda Modeling Philosophy Core PT Tendon Families Development Nested Family Use and Completed Families Modeling Parking Structure and Use of Families Documenting Model and Presentation Downstream Benefits Limitations

28. Downstream Benefits: Schedules

29. Agenda Modeling Philosophy Core PT Tendon Families Development Nested Family Use and Completed Families Modeling Parking Structure and Use of Families Documenting Model and Presentation Downstream Benefits Limitations

30. Modeling versus Drafting File Size Core Family Reinforcement category Parabola Modeling with Completed family Warped and sloped slabs Can’t do clash detection between PT and rebar Documentation Elevation at CGS

31. Conclusion Modeling Philosophy Modeling Post Tensioning Documentation Benefits

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