week7-xue bai

Last week in class, we fix our bridge, which we were done during weekend. we redesign some part of the bridge to make it stronger. Fist time we want to test the bridge the bridge was too short. We made a bridge that just about 20 inches, and it is not long enough to put on the holder. So we add up our bridge and test it. It comes out to be good. The problem we do not think about is, out bridge twist to one side. That cost our bridge to fall. Next week we would work on our 30 inches bridge. The 30 inches bridge was harder that the one we made now, but I think we could do it.

When we use the west point bridge design, we get the data of which part is easy to fall apart. How many tension and compression it holds and how many present was been used. It really help to find out what parts hold the most force. Which parts need to be stronger and which part could use fewer pieces. If we knows that data, we would make a more effect bridge. The other data may also could be helpful would be how much the bridge can hold. In the time when we build the bridge we could only made it a strong as possible, but we do not know if one piece of our bridge is remove is that cost the bridge any different. This data we may could get from the test data.