Structural rigidity

Structural rigidity means that a building or object is strong and won't easily move or break. Think of it like a toy block tower you made - if you stack the blocks really tight and add glue, it becomes harder to push over or knock down. The same idea applies to buildings and objects, like a bridge or a car. Engineers and architects design these things to be strong and sturdy, so they don't fall apart or collapse. They use strong materials like steel and concrete, and make sure everything fits together tightly so it doesn't wiggle or shift. Having structural rigidity is important for safety and making sure things last a long time.