Steel Dome
Most state Capitol buildings in the United States are made of iron or steel. The best thing about building with steel is that you can cast pieces in almost any size and shape, then assemble them like a giant jigsaw puzzle.

There's only one problem. If you build a very tall, solid steel dome, the heavy weight of the structure will push the walls outward, creating a force called tension. This may cause the dome to crack and collapse!

How will you get around this problem?

Tell the governor that it's impossible to build a dome this tall		Build reinforced concrete rings around the dome to keep the walls from spreading		Fool the governor with a double-dome design