1. Informatics 121 Software Design I
Lecture 2 André van der Hoek
Duplication of course material for any commercial purpose without the explicit written permission of the professor is prohibited.
December 26, 2018 – 18:02:10
(c) 2006 University of California, Irvine – André van der Hoek

2. © 2006 University of California, Irvine – André van der Hoek
Today’s Lecture
One design exercise
Reflection
First assignment
December 26, 2018 – 18:02:10
© 2006 University of California, Irvine – André van der Hoek

3. © 2006 University of California, Irvine – André van der Hoek
Five Teams
Team 1
Michelle
Mitch
Jung
Team 3
Gabriela
Kyle
James
Team 5
Sean
Julie
Bryant
Team 2
Sam
Angelo
Jason
Team 4
Chris
Cynthia
Nicholas
Zafar
December 26, 2018 – 18:02:10
© 2006 University of California, Irvine – André van der Hoek

4. Your Third Design Exercise
Build a structure that spans two bases…
…such that the distance between the two bases is maximized…
…out of Play-Doh, wire, paper, and dowels…
…using tools as necessary…
…in 45 minutes
(we will take some pictures)
December 26, 2018 – 18:02:10
© 2006 University of California, Irvine – André van der Hoek

5. Your Third Design Exercise – Constraints
The structure must be able to suspend, above the height of the base and for 15 seconds, one large can of Play-Doh
in the middle of the structure
in one other place on the structure of your choosing
not overlapping with a base
not overlapping with middle of the structure
The paper and dowels must remain in one piece
December 26, 2018 – 18:02:10
© 2006 University of California, Irvine – André van der Hoek

6. Your Third Design Exercise – Some Twists
Each group must submit two estimates of the maximum span they believe they can achieve
after 10 minutes
after 30 minutes
After 50 minutes of design & build, the final structure has to stand
You are allowed to prototype as much as you want
The structure with the largest span between the two bases “wins”
December 26, 2018 – 18:02:10
© 2006 University of California, Irvine – André van der Hoek

7. © 2006 University of California, Irvine – André van der Hoek
Reflection
How many alternatives did you consider?
December 26, 2018 – 18:02:10
© 2006 University of California, Irvine – André van der Hoek

8. © 2006 University of California, Irvine – André van der Hoek
Reflection
Did you ever start over completely?
December 26, 2018 – 18:02:10
© 2006 University of California, Irvine – André van der Hoek

9. © 2006 University of California, Irvine – André van der Hoek
Reflection
How much could you reuse from one alternative to the next?
December 26, 2018 – 18:02:10
© 2006 University of California, Irvine – André van der Hoek

10. © 2006 University of California, Irvine – André van der Hoek
Reflection
What influence did the constraints have?
December 26, 2018 – 18:02:10
© 2006 University of California, Irvine – André van der Hoek

11. © 2006 University of California, Irvine – André van der Hoek
Reflection
How much did you draw upon your existing knowledge of bridges?
December 26, 2018 – 18:02:10
© 2006 University of California, Irvine – André van der Hoek

12. © 2006 University of California, Irvine – André van der Hoek
Reflection
How much did the properties of the available materials influence your design?
December 26, 2018 – 18:02:10
© 2006 University of California, Irvine – André van der Hoek

13. © 2006 University of California, Irvine – André van der Hoek
Reflection
What did you learn from the prototypes?
December 26, 2018 – 18:02:10
© 2006 University of California, Irvine – André van der Hoek

14. © 2006 University of California, Irvine – André van der Hoek
Reflection
Could you use your approach for designing a real bridge?
December 26, 2018 – 18:02:10
© 2006 University of California, Irvine – André van der Hoek

15. © 2006 University of California, Irvine – André van der Hoek
Reflection
How accurate were your estimates?
December 26, 2018 – 18:02:10
© 2006 University of California, Irvine – André van der Hoek

16. © 2006 University of California, Irvine – André van der Hoek
Reflection
Where is your design?
December 26, 2018 – 18:02:10
© 2006 University of California, Irvine – André van der Hoek

17. © 2006 University of California, Irvine – André van der Hoek
Reflection
Which representation(s) did you use?
December 26, 2018 – 18:02:10
© 2006 University of California, Irvine – André van der Hoek

18. © 2006 University of California, Irvine – André van der Hoek
Reflection
How did you know what would / would not work?
December 26, 2018 – 18:02:10
© 2006 University of California, Irvine – André van der Hoek

19. © 2006 University of California, Irvine – André van der Hoek
Reflection
How did your team communicate design ideas?
December 26, 2018 – 18:02:10
© 2006 University of California, Irvine – André van der Hoek

20. © 2006 University of California, Irvine – André van der Hoek
First Assignment
Next lecture, each team should bring a design of a freestanding tower that another team can build in 10 minutes or less
the design team cannot help clarify
The tower must be able to suspend a large can of Play-Doh on top for 15 seconds
The winners will be the designers and implementers of the tallest tower
We will have visitors…
December 26, 2018 – 18:02:10
© 2006 University of California, Irvine – André van der Hoek

21. First Assignment – Available Materials
10 dowels
4 feet of wire
5 large cans of Play-Doh
8 sheets of paper
December 26, 2018 – 18:02:10
© 2006 University of California, Irvine – André van der Hoek