@structional: Why are bridges full of triangles and not squares? A square of pinned bars folds with one push. Add one diagonal and it locks, because to fold, that diagonal would have to stretch, and steel barely stretches. That's why every truss bridge is built from triangles. Structural engineering, visualized. #structuralengineering #engineering #civilengineering #bridges #fyp

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Saturday 10 October 2026 14:42:11 GMT