A curtain wall is a non-structural exterior wall system that is typically composed of lightweight materials, allowing for large expanses of glass and minimal framing. This design approach enhances the aesthetic appeal of buildings while providing flexibility in architectural design, especially significant during the rise of the skyscraper in the late 19th and early 20th centuries. The curtain wall system supports its own weight and can be attached to the building's structural framework, allowing for greater innovation in facade treatments and overall building expression.
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