1. SE4244 Modelling for Integration
Ralph Pullinger
Structural Technical Specialist, Autodesk, AEC Division (Northern Europe)

2. Class Summary
Learn the ins and outs of the new analytical model within Autodesk® Revit® Structure This class covers how to model effectively for bidirectional integration with Robot™ Structural Analysis Professional and any third party analysis application. This class is important for both engineers and modellers and is ideally suited for today’s new breed of engineer.

3. Learning Objectives At the end of this class you will be able to:
Understand the complexities of the Revit® Structure analytical model
Make decisions confidently and assign responsibilities for model generation
Learn to make compromises but know who will ALWAYS win out

4. Who am I? Ralph Pullinger
Structural Technical Specialist, Autodesk, AEC Division (Northern Europe)
Professional Engineer
Autodesk 3 years
Consulting 22 years
Projects small to large, simple to complex – integrated workflows a speciality

5. All is not as it seems…
Spot the difference – all eight. Hands up when you have them.

6. Analytical examples

7. Stepped slab – model

8. Stepped slab - analytical

9. Stepped slab - lessons Walls are good – when used correctly
Beams are better – in certain situations
Projecting the analytical line of slabs needs to be monitored

10. Slab on walls - model

11. Slab on walls - analytical

12. Slab on walls - lessons Default behaviour is not always good
Consistency when attaching walls to floors is important
Walls must be modelled so that the outside IS the outside

13. Column and beams - model

14. Column and beams - analytical

15. Column and beams - lessons
When is a wall not a wall?
Who knows what a rigid link is?
Is this engineering or modelling?
Revit settings still apply

16. Analytical settings Automatic checks Tolerances Member Supports Check
Analytical/Physical Model Consistency

17. Sloping beam - model

18. Sloping beam – analytical

19. Sloping beam - lessons
Analytical control is quite complex, however, it can be quite rewarding
Flexibility is the key

20. Grid systems - model

21. Grid systems - analytical

22. Grid systems - lessons
Sometimes there can be too much flexibility and too much time can be wasted

23. Overall observations
If entered blindly the integration process will fail
The key to integration is communication
It is essential that Engineers understand modelling and that Modellers understand engineering
There is lots of flexibility
If there is an impasse then the model wins as the project must be documented

24. Analytical adjustment
Playback video

25. Extending integration to documentation
Consider adding loads
Locking them to elements
Load flexes with elements
Do engineers need to be modellers?
Do modellers need to be engineers?

26. Documenting loads Create fills based on use Add comments to the loads
Annotate loads to display their comments
Aids internal and external documentation
Very useful check!

27. Robot link interface

28. THERE ARE TWO MODELS: a physical model and an engineering model
Robot link process
First pass – Robot model is created from scratch
Engineer adds loads, combinations, ‘technical’ stuff and design
Robot model returned to Revit for update with new member sizes
Second pass – Robot model is merged with Revit geometry
Engineer does their thing again
Robot model returned etc.
THERE ARE TWO MODELS: a physical model and an engineering model
For this to work when using files keep the same name – let the link do the work!

29. Summary There are two personas Some have split personas
An Engineer
A modeller
Some have split personas
The ‘new breed’ (who are really a modern ‘old breed’)
It is important that the integration process is understood by all
It is vital that information is managed
i.e. who does what, when
It is not rocket science!
Thank you for being here and enjoy the rest of AU!

30. Autodesk, AutoCAD* [*if/when mentioned in the pertinent material, followed by an alphabetical list of all other trademarks mentioned in the material] are registered trademarks or trademarks of Autodesk, Inc., and/or its subsidiaries and/or affiliates in the USA and/or other countries. All other brand names, product names, or trademarks belong to their respective holders. Autodesk reserves the right to alter product and services offerings, and specifications and pricing at any time without notice, and is not responsible for typographical or graphical errors that may appear in this document. © 2011 Autodesk, Inc. All rights reserved.