![]() What are some examples of tall towers throughout the world? How do these towers stay standing without falling over, even though they are very tall and skinny?.It is unlikely that your tower will work perfectly on the first try-it might even collapse! You might need to iterate by testing and tweaking your design multiple times so you can continually improve it. You can also use this project to demonstrate the engineering design process. An I-beam (where the cross section looks like a capital letter I) is a common shape used in many structures. The cross section of a piece of paper rolled into a tube is a circle. This rectangle bends very easily in the thin direction. For example, the cross section of a flat piece of paper is a (very thin) rectangle. This resistance to bending is determined by the beam's cross section. It becomes much harder to bend the paper if you fold it in half multiple times or roll it into a tube. For example, it is very easy to bend a flat piece of paper. The shape of a beam can dramatically affect its strength. ![]() They are anchored to the ground and prevent the tall, skinny towers from falling over. For example, the long cables connected to the top of the radio towers in Figure 2 are called guy wires. These parts can only be in tension (think about what happens if you try to "push" a rope), but they can still be useful.
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