A vertical structural element, typically containing elevators and stairs, designed to resist lateral forces through shear strength. Shear cores provide stability for tall buildings while housing essential building services in a central location.
From 'shear' (sideways structural force) and 'core' (central element), terminology developed in the 1950s with the rise of high-rise construction. The concept unified structural engineering with building planning principles.
The Willis Tower's bundled tube design uses multiple shear cores that work together like a bundle of drinking straws - each tube supports the others, allowing the building to reach unprecedented heights! Modern supertall buildings often have concrete cores surrounded by steel frames, creating hybrid structural systems.
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