The grade 7 and 8 classes are building bridges to learn about how structures can be strong and support many times their weight. 
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 The design of a strong bridge requires it to be able to hold a large load, but still be reasonably light. Triangular sections provide good support. |
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So what will they look like when they're done? Which bridge will be the strongest? Have a look below. Testing was done during the week of February 7-11. |
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This bridge was unbreakable! Notice the triangular supports, and the well-braced undersurface. |
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Another strongly built bridge. This one broke, but only under a very full load. Relative strengths of the bridges was measured by counting the number of books needed to collapse the structure. |
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Some of the bridges had complicated designs that attempted to prevent a downward force from cracking the bridge deck. |
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Again, notice the triangular cross-bracing. Some very simple designs proved to be very strong when tested. |
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Other designs were far more complicated, but seemed to do the job when tested.
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Most bridges collapsed in a spectacular fashion. Meanwhile, other students were busy grading each bridge.
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Design by Bill Willis 2000 Wunderland Website Design |