What Makes Bridges So Strong?

The video explains how bridges are designed to be strong using both materials and smart engineering. It starts with a question from a viewer about bridge strength and discusses the materials like iron and steel used in bridge construction. The video then explores different types of bridges, such as beam bridges and their limitations, and how triangles are used in bridge design for added strength. It also covers suspension bridges, explaining how they use tension to distribute weight and maintain stability. Overall, the video highlights the importance of both materials and design in building strong bridges.

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