1. Wind Vs. Trusses

2. News - testing tornado winds
News - testing tornado winds
Reinforcing tornado houses g

3. Trusses
A framework, typically consisting of rafters, posts, and struts, supporting a roof, bridge, or other structure

4. What we DON'T want!

5. Experiment #1 - Manillatag and Fasteners
Square Test
Square & Truss Experiment
Pentagon House & Truss experiment
Before
After

6. Paper strips and Trusses
What did we learn from these experiments?
Paper strips and Trusses
Trusses helped to make squares and pentagons stronger.

7. The cube bent after ____ pennies were put on top of it.
#2 Cube Test
WHAT HAPPENED
The cube bent after ____ pennies were put on top of it.

8. trick to building a cube:
#3 Cube and Trusses Test
DRAWING
WHAT HAPPENED
trick to building a cube:
I had ____ trusses on my cube. It broke after _____ pennies.
Once you have finished the experiment and filling out the worksheet, raise your hand. If the teacher gives it the OK, you can come get more "Truss" pieces and continue testing out your square to see how many pennies you can make it hold by adding more trusses! (and write it on the back of your paper)
"Most Pennies" Score!

9. The Trusses in a cube should make it even stronger!