Using the Building Big website, investigate the basic structures used by engineers in their designs:
http://to.pbs.org/1hDKL4Q. Note the
purposes that each structure serves and why they are useful.
After you've learned about basic engineering structures, try out the interactive
labs on the
Building Big website: http://to.pbs.org/1hlikxx.
You just learned about the techniques engineers use to build structures that hold up under all sorts of conditions. Now it's your turn to build a sturdy structure of your own.
Do the Challenge: Read the passage below to learn how engineers build superstrong bridges. Then follow the instructions to construct your own bridge that won't buckle under pressure.