This document provides a summary of an XXL workshop on parametric design. The workshop covered topics including data lists, parametric design of grandstands, tessellations for freeform surfaces, and scripting. The schedule included introductions and exercises for each topic. Examples were provided for applying parametric design principles to structures like trusses and exploring grandstand design alternatives based on regulations. Methods for customized tessellations involving variables for shape, structure, cladding and point distribution/attractors were demonstrated. C# and VB.net scripting components in Grasshopper were introduced along with examples.

1. XXL WORKSHOP
AR0025
Michela Turrin GH WORKSHOP – Turrin, Nourian, Chatzikonstantinou
15-2-2012
Delft
University of
Technology
Challenge the future

2. Workshop program
9.00 M. Turrin – Workshop Introduction
9.30 Y. Chatzikonstantinou - Data Lists (Introduction and Exercises)
10.50 Break
11.00 M. Turrin – Parametric Design of GrandStands: Introduction
P. Nourian, Y. Chatzikonstantinou - Parametric Design of GrandStands: Exercises
13.00 Lunch Break
13.45 M. Turrin - Parametric Design for Free From Surfaces Tessellations: Introduction and Exercises
15.15 Break
15.30 M. Turrin – Introduction to Scripting
Y. Chatzikonstantinou – Scripting: exercise – C#
M. Turrin – Scripting: Tessellation via Scripting C#
P. Nourian – Scripting: exercise – VB
17.30 Closing
XXL WORKSHOP 2

3. Parametric (associative) design
Object-oriented
Also called features, components, assemblies, parts, etc.
An object can have properties, relationships and behavior
e.g. A line has a length, a wall can be connected to the roof, a building
can be opened by opening the door
Parametric
The object has properties which the user can edit.
Associative
The object has relationships which the user can define and edit.
XXL WORKSHOP 3

4. Parametric modelling
Input:
Geometric output:
Values for independent
Different instances
parameters
of the model
XXL WORKSHOP 4

5. Parametric modelling
Grasshopper
www.grasshopper3d.com
http://wiki.bk.tudelft.nl/toi-pedia/Grasshopper
Generative Components
http://www.bentley.com/en-US/Products/GenerativeComponents/
http://generativecomponents.wikispaces.com/Tutorials
XXL WORKSHOP 5

6. Rhino and GH Tutorials
http://web.mac.com/rhino3dtv/GH/GH.html
XXL WORKSHOP 6

7. Rhino and GH Tutorials
www.liftarchitects.com/downloads
http://www.liftarchitects.com/storage/research/Grasshopper%20Prim
er_Second%20Edition_090323.pdf
ToiPedia
http://wiki.bk.tudelft.nl/toi-pedia/Grasshopper
XXL WORKSHOP 7

8. Rhino and GH Tutorials in ToiPedia
XXL WORKSHOP 8

9. Rhino and GH Tutorials in ToiPedia
XXL WORKSHOP 9

10. DATA LISTS
15-2-2012
Delft
University of
Technology
Challenge the future

11. Example of application - Truss
XXL WORKSHOP 11

12. Basics for some of the possible ways to
parametrically explore trusses and
space structures
Picture courtesy of Prof.Majowiecki
XXL WORKSHOP 12

13. GRAND STAND DESIGN
15-2-2012
Delft
University of
Technology
Challenge the future

14. Exploration of design alternatives
DEFINITION OF CONSTRAINTS BASED ON GRANDSTAND REGULATIONS AND RECOMMENDATIONS
XXL WORKSHOP 14

15. Grand Stand Design
See presentation by Robert Fransen
XXL WORKSHOP 15

16. Grand Stand Design
See presentation by Robert Fransen
XXL WORKSHOP 16

17. Grand Stand Design
See presentation by Robert Fransen
XXL WORKSHOP 17

18. Grand Stand Design
See presentation by Robert Fransen
XXL WORKSHOP 18

19. Grand Stand Design
See presentation by Robert Fransen
XXL WORKSHOP 19

20. TESSELLATION
15-2-2012
Delft
University of
Technology
Challenge the future

21. Roof for Court Visconti – Louvre
Arch. Bellini and Riciotti; M.Majowiecki
15-2-2012
Can be used for example for preliminary
investigations for single and double
layer space structures
Images courtesy of Prof.Majowiecki
Delft
University of
Technology
Challenge the future

22. Examples of Parametric tessellations
http://www.co-de-it.com/wordpress/code/grasshopper-code
15-2-2012
Delft
University of
Technology
Challenge the future

23. Customized Parametric tessellations
15-2-2012
Delft
University of
Technology
Challenge the future

24. XXL WORKSHOP 24

25. SET OF VARIBALES
OVERALL SHAPE
STRUCTURAL
MORPHOLOGY
XXL WORKSHOP 25

26. XXL WORKSHOP 26

27. XXL WORKSHOP 27

28. CLADDING
• The cladding system has to limit the roof’s solar heat transmission by allowing sun light transmission
XXL WORKSHOP 28

29. PARAMETRIC CLADDING
XXL WORKSHOP 29

30. Density of the tessellation:
SUBDIVISION
XXL WORKSHOP 30

31. Bart van den Ende Generative grid optimization of blob surfaces
Stand Up Architecture
XXL WORKSHOP 31

32. XXL WORKSHOP 32

33. XXL WORKSHOP 33

34. XXL WORKSHOP 34

35. XXL WORKSHOP 35

36. Tim Castelijn Self-supporting sandwich element for freeform building envelopes
supporting sandwich element for freeform building envelopes
master thesis - computation and performance design
XXL WORKSHOP 36

37. Density of the tessellation
XXL WORKSHOP 37

38. Density of the tessellation :
DISTRIBUTION OF POINTS:
1 - RELAXATION
XXL WORKSHOP 38

39. British Museum, Queen Elizabeth II Great Court - London, GB, 2000 - Foster and Partners
XXL WORKSHOP 39

40. Example of relaxation - Chris Williams
XXL WORKSHOP 40

41. Density of the tessellation :
DISTRIBUTION OF POINTS:
2 – USE OF ATTRACTORS
XXL WORKSHOP 41

42. Example of concentration of nodes by using attractors – Michael Winklaar
XXL WORKSHOP 42

43. PROPAGATION OF COMPONENTS
XXL WORKSHOP 43

44. Exercise – Propagation of a component
Can be used for example for preliminary
investigations for modular structures
and/or claddings
XXL WORKSHOP 44

45. Scripting
XXL WORKSHOP 45

46. C# and VB.net components
• Grasshopper contains a VB.net and C# component.
• These components allow you to run your own custom code within Grasshopper.
XXL WORKSHOP 46

47. C# and VB.net components
GH Tutorials about coding and scripting:
http://www.grasshopper3d.com/page/scripting-and-code-tutorials
One of the good references for C#:
http://www.programmersheaven.com/ebooks/csharp_ebook.pdf
One of the good references for VB:
http://www.programmersheaven.com/2/VB-NET-School
XXL WORKSHOP 47

48. C# and VB.net components
Image from Grasshopper Primer
XXL WORKSHOP 48

49. C# and VB.net components
Image from Grasshopper Primer
XXL WORKSHOP 49

50. C# examples
XXL WORKSHOP 50

51. VB example - For Loop
XXL WORKSHOP 51

52. Michela Turrin - M.Turrin@tudelft.nl
Pirouz Nourian – P.Nourian@tudelft.nl
Ioannis Chatzikonstantinou - I.Chatzikonstantinou@tudelft.nl
XXL WORKSHOP 52