Engineering & MachinesCivil Engineering
Why Concrete Needs Steel
Concrete is strong under squeezing and weak under stretching
Concrete holds up skyscrapers. Yet a plain concrete beam across a gap can crack under far less weight. What's missing?
You'll find out
- How much weaker concrete is pulled
- Which side of a beam cracks first
- How a Roman dome stands with no steel
Why it matters
Bridges, parking garages and high-rises all rely on this partnership. Once you see it, you'll spot it all over town.
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