1. The Incredible Bridge The Incredible Bridge alice yi - collin larson - jason truong - michael lenning Created by Team Incredible

2. Contents… »Assignment »Materials »Design Ideas »Prototype »Testing/Results »Prototype Analysis »Flaws »Improvements »Final Design »Final Results »Conclusion

3. Assignment… »Build bridge with materials provided that fit the guidelines

4. Materials Used… »6” Senior Tongue Depressors »Carpenter’s Wood Glue »Hot Glue »File »Binder Clips »Ruler/Saw/etc.

5. Design Ideas… »Main goals: »disperse weight to the sides »maximize amount of compression the bridge can withstand »efficiency (compression vs. mass)

6. Prototype… »Design

7. Prototype… »Results: »Weaknesses: A break in the base:A break in the arc:

8. Improvements… »Shortened the height »Added more layers »Focused on strengthening the weak areas from prototype »Increased width of bridge »Added additional inner supports »Added decorations ^.^

9. Final Bridge… »Design

10. Final Bridge… »Results: »Attempt 1 (Horizontal):

11. >> Attempt 2(Vertical)

12. Conclusion… »Better efficiency (weight - compression) »Same weight, stronger bridge »By reducing height, adding strength through layers, we achieved greatness! »First Bridge: 0.61 pounds, held: 371 lbf »Final Bridge: 0.62 pounds, held: 500.1 lbf