1. Complete the worksheet based on the information in this PowerPoint presentation.

2. 3 Types of Bridges

3. 3 Types of Bridges
Beam
__________________

4. 3 Types of Bridges
Suspension
2. __________________

5. 3 Types of Bridges
Arch
3. __________________

6. Beam Bridge – a horizontal beam supported at both ends.

7. Span – the distance that a bridge extends between 2 supports.

8. Load – a force that acts upon a structure.

9. 2 Types of Loads
Dead Load – the weight of the structure. Live Load – the weight of things on the structure. Examples:

10. Take a look at this picture to see how the load is affecting the structure. There are two main forces at work here…

11. Compression - the force that presses down on the top of the bridge
Compression - the force that presses down on the top of the bridge Tension - the force that presses outward on the bottom of the bridge.

12. Click on the picture to explore the PBS Building Big website.

13. Hopefully this information will be useful when designing and constructing your bridge. THE END! 