Bridge Project By Patrick Hurton, Owen Duggan, SulJonn Myshqeri, and Ian RUSSELL

Our first bridge only held 41 pounds, but our group mastered bridge building after this bridge.

Our group thought that the strongest part of this bridge was the base, and we thought that the weakest part of our bridge was the side and the middle.

The reason why this bridge broke was because the stick that was on the left side of our bridge that rested on the table snapped.

This is the beginning of our second bridge. We stacked two of these on top of eachother to form our bridge. We did this because sticks hold more when they are vertical and not horizontal.

This is our second bridge testing. It dealt with a lot of tension before it collapsed.

Our second bridge held a total of 131 pounds! After seeing other kid's bridges and seeing what designs work and don't work our group decided to go with this design. The new design meant that we would have to forget about our old bridge layout and do a completely different layout. This bridge broke in the middle and had no really weak parts.

This is a photo of our group before testing our second bridge.

Conclusion

Throughout our bridge project, our group learned what makes a good bridge and the different forces that interact with our bridge. For our first bridge we were trying different styles and seeing what worked and what didn't. After we tested our bridge we decided to completely make a new design for our second bridge. We layed the popsticle sticks vertically on our second bridge because it is harder to break compared to horizontally layed sticks. Our first bridge snapped because the popsticle sticks were horizontally placed.

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