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The Skyscraper Challenge
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Steel-Reinforced Concrete
Great choice!

Steel-reinforced concrete = Right

Some of the tallest buildings in the world, like the Petronas Towers, are supported by thousands of steel-reinforced concrete columns and beams. Steel is very strong in tension, and concrete is strong in compression, so together, they can be pushed and pulled without breaking or collapsing -- ideal qualities for a tall apartment building in a windy city. But most importantly, concrete is a good insulating material. It protects the steel for a long time from melting in a fire. Good job!

But before you celebrate, you have one more problem to solve!
But before you celebrate,
you have one more problem to solve!

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