week4-BaiXue

Last week in class we are try to make a bridge with the lowest cost. At first we are doing two side bridge, but it end up with a high cost. By effect with the bridge that showed in class, we end up with a bridge that is one side and the price of around 240,000. Next week, we may have a guest speech that is about the bridge. For the end of the next class, I would know better about bridge and how to build the bridge.

We are now using West Point Bridge Designer to designer bridge. When comes the point of when we building the real bridge to build, which we use K’NEX. K’NEX is not a good quality thing to build a bridge. By using K’NEX, we are not able to change the size of the part. There also limited length of the part. It limited the shape that could make. Fuser more the connect part of the K’NEX is very weak and easy to get apart. What the WPBD can do may not happen in the really world. The support point of the bridge is also something to think about. On the WPBD there is no problem with the support point. When we made the real bridge there would be a lot of question come out. The WPBD is more about an idea world. One the real bridge there would be a lot of thing that unexpected happed.