Skyscrapers

Skyscapers are tall continuously inhabited buildings made of reinforced concrete, steel, and glass. Skyscrapers are usually buisiness buildings for large companys. The building is contructed in stories and adapted to the needs of each story. The basic outline for constructing a skyscraper is a steel skeleton with concrete acting as the muscles, tendons, and ligamments. The skin to the building is the glass. Glass is usually he majority of the exterior of the building which is somewhat ironic because glass is usually associated with weakness, but is a major component in the strongest structures in the world. Technological advances like air conditioning, elevators, and water pumps allow the buildings to be practical in their function. Until the 19th century, buildings of six stories or more was rare. Skyscrapers are extravigant feats of architectural engineering and have essentially maximized the number of employees in a building that takes up a small amount of area. Skyscrapers have advanced the output of production for businesses and have, in turn, advanced business and the economy.

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