Triangles- We believe the strongest part of our bridge is our triangle truss design. The triangles will help distribute the weight and forces evenly throughout the bridge. In addition when creating our first bridge we discovered that triangles were a strong design that would help us to hold as much weight as possible.
Beams- When creating our Bridge one of our main focuses was making sure our sides would be strong. We think that by doubling up on sticks to create strong beams our Bridge will be able to hold a substantial amount of weight. We took extra precautions when making our Bridge by doubling up on popsicle sticks to make sure our sides would be strong.
Base- As you can see from the image our base isn't really supported by much besides the two beams on the side of our bridge. We think that as the test carries on our base will begin to weaken as more weight is put on. We hoped to make up for that by making sure our beams and triangles would be strong enough to help carry some of the weight along with our base.
Our first bridge held an outstanding weight of 131 pounds. Just as we predicted the triangle trusses and sides were extremely strong and were able to hold a substantial amount of weight. In the end the base wasn't able to hold any more weight and the bridge ended up giving away.
Triangles- Like last time we decided to stick with the triangle truss design since it proved to be very effective in the end. This time though we made sure our triangles would be even stronger by making our triangles with two sticks instead of one as shown in the picture. The arrows point to the two popsicle sticks that make up our triangle trusses.
Beams- Last time we made sure that we doubled up on our beams to make them strong. They held together very well, but we believed that if we wanted to hold even more weight we would need to triple up which is what we did. As you can see in the photo the beams are tripled together which Weill allow our bridge to hold a lot of weight and maybe even more than last time.
Base- We think that since the base isn't supported by much we think that's were a potential point of weakness will be. Since we took extra percautuions when building our beams we think that may be able to hold some extra weight as the test goes on. Overall the base is the potential point of weakness in our bridge.
What did we do differently than last time?