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Two things led to the feasibility of skyscrapers:

  • the cheaper production of mass iron and then light steel beams, which allowed economic construction of high rise buildings that did not lose most of the lower floors to bulky masonry construction;
  • the design of safety elevators which meant people could access floors over 10 stories more easily.

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14y ago
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Q: What new building technology made skyscrapers possible?
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