During lab last week I was able to see the knex bridges made by other groups test their sustainability against about 35 lbs of weight. Most of the bridges were designed sturdy and were able to withhold the weight. I believe that the steel spanning 20' will be a lot similar to the WPBD, but still have the geometric shape of the knex. Making a real bridge out of steel can be altered in many different angles unlike the limitations you have on the knex pieces. Besides the angles, the patterns and shape of the bridge may still be similar to the knex designs as long as there is durability in the structure. Steel is a lot more durable than the plastic knex pieces, but determining how much weight the bridge holds depends on the weight being tested on the bridge.
In lab last week we were asked to keep working with the Knex pieces and as a group decide on one design to be our final design. We thought that the best way to determine this was to create our own and choose one. Since we are able to test our bridge under the weight, this will make our job easier to see which bridge was able to sustain the most weight.
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