Building a bridge

Task 1:   Show me your bridge designs.

Task 2:  Build a model suspension bridge

Task 3:  Take a look at different types of bridge designs and create a summary poster.

Task 4:  Minimize the cost on your bridge.

Task 5:  Build a truss bridge model using filing paper and bamboo skewers.  This must be done IN CLASS

Due Date:  Wednesday (sometime) we'll be testing the bridges.

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Bridge Reflection

Reflection on Bridge Building

Test your bridge, and measure the mass in kg that it holds.

Send a picture or video to marciarpowellATgmailDOTcom  List your group members.

Watch the video

Answer the following

1. How much did your bridge hold?
2. How much did it cost, and how did you minimize your costs?
3. What is the mass of your bridge (using a scale)?  Convert to kg.
4. Calculate the force weight of the bridge, and the force weight of the load applied.
5. Calulate a ratio to show me the strength of the bridge (load/bridge)
6. Using the member data sheet, which bridge member held the greatest load? How do you know?
7. Can a member experience both compression and tension? Explain.
8. IS your bridge model a good fit for the bridge you made in the program? Why or why not?
9. Draw a force diagram for your bridge when the truck is on the left-hand side of the structure.
10. How does friction matter in this project?
11. Explain why a truss bridge is more common than a cable-stayed bridge over small creeks.
12. What have you reinforced in this project about statics, force diagrams, angles, and vectors.

This entire sheet should be 1-2 pages long, hand-written or typed