1. Bridge Project Presentation Group #2 Alex Odle Matt Simon Salim Hamed Micael Thiodet

2. Outline of Presentation Introduction –Group Members –Goals and Constrictions –Group Goal Prototype Testing –Design Process Final Design –Changes Made To Final Project Conclusion Final Thoughts and Suggestions

3. Introduction Group Members: –Salim Hamed –Alex Odle –Matt Simon –Micael Thiodet

4. Goals and Constrictions Goal: –Build an efficient bridge Constrictions: –Limited Materials –Limited dimensions –Limited Time

5. Group Goal Our group initially decided that we were going to focus on efficiency rather than overall weight the bridge can support. For these reasons both the prototype bridge and the final bridge was created using fishing line as substantial material.

6. Prototype Testing Types of Considered Bridges: Cable Stay Bridge Suspension Bridge

7. Our Choice… Cable-Stay Bridge Reasons why we picked a cable-stay: –The supported weight will be forced down to the sides of the jig –Less materials because we will utilize the fishing line –Aesthetically pleasing a.k.a. “ sexy ”

8. The Completed Prototype Before the Test After the Test FAILURE POINT

9. Results of the Prototype Test Weight: 0.685 lbs Max. Load: 70 lbs Efficiency: 102 The prototype bridge failed because the fishing line was not under tension. Therefore all the weight was being supported by the deck, which was not designed to support all the weight on its own.

10. Final Design Changes made to the final design: –Complete redesign of the bridge –Final bridge will have a string based structure Reasons for the changes: –More efficient than prototype –Less complicated than prototype –And still “ sexy ”

11. The Final Bridge Carlos Santana (named for obvious reasons)

12. Results of the Final Test Weight: 0.04 lbs Max. Load: 75 lbs Efficiency: 1875 The results of the final test were very pleasing. The bridge didn’t actually fail, instead as the string flexed the metal plate that was resting on the string interfered with the jig. As a result we had to stop the test. Our improvement worked just as we had planned. The bridge was very efficient as seen by the efficiency rating.

13. Irony?... I think not

14. In Conclusion… Carlos Santana

15. Final Thoughts and Suggestions Final Thoughts: We would have used a different size metal platform so Carlos Santana could have tested until failure Suggestions: Have good group communication Budget materials wisely Spend plenty of time at the drawing board designing the bridge When gluing, don’t use too much glue and clamp the wood while it is drying

16. THANK YOU Very Much… Are there any questions? Good! Because I want to go check and see if my hair still looks as good as it does in this picture