Collapsed

Overview

Objectives/Goals My objectives for this experiment was to find out if I change the design of a bridge into a plank, suspension, or truss bridge will it affect how much mass the bridge can hold. Methods/Materials The 12 bridges that I made were made of balsa wood stuck together with hot glue. After I finished the bridges I got two chairs and put the bridge ends on the two chairs leaving an unsupported space. Next I tied a rope in the middle of the bridge and on the other end I tied a bucket. Then I got a few gallons of water and some weights. Then I poured the water in slowly until it broke. Then I weighed the bucket with the water in it and did the same thing this every time. Results After the experiment my prediction was right! I predicted that the truss bridge would hold the most weight the most it held was 118 pounds! Conclusions/Discussion While I was doing the experiment I learn a lot about the different bridge types and real bridges that have collapsed in the past. I have also learned that even if a bridge is much more expensive than othersd we should use the best one so people can be safe from the danger of bridge failure.

Awards (1)

• Honorable Mention

Competition history

• CSEF 2012 Applied Mechanics & Structures · Entry J0323

Resources

• CSEF project summary ↗

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