<P> The development of the elevator was also essential to the emergence of the early skyscrapers, as office buildings taller than around six stories would have been impractical without them . Powered elevators were first installed in England during the 1830s and spread to U.S. factories and hotels by the 1840s . Elevators using hoist ropes, however, could only function effectively in low - rise buildings, and this limitation encouraged the introduction of the hydraulic elevator in 1870, even though early models contained dangerous design flaws . By 1876 these problems had been resolved, providing a solution for servicing the early skyscrapers . </P> <P> New environmental technologies in heating, lighting, ventilation and sanitation were also critical to creating taller buildings that were attractive to work in . Central heating could not be easily extended to serve larger buildings; in the 1850s, a system using low - pressure steam and steam - operated fans became adopted in the construction of the later skyscrapers . Many U.S. buildings were lit by gas, but this carried safety risks and was difficult to install in taller buildings . As an alternative, electric lights were installed from 1878 onwards, powered by basement generators . Ventilation was also a challenge, as smoke drifting into offices from the streets and the fumes from the gas lighting made air quality a major health issue . A steam - driven, forced - draft ventilation system was invented in 1860 and became widely used in taller buildings by the 1870s, overcoming much of the problem . Improvements in iron piping permitted running hot and cold water and sanitation facilities to be installed throughout taller buildings for the first time . </P> <P> There is academic disagreement over which building should be considered the first skyscraper . The term was first used in the 1780s to describe a particularly tall horse, before later being applied to the sail at the top of a ship's mast, tall hats and bonnets, tall men, and a ball that was hit high into the air . In the 1880s it began to be applied to buildings, first in 1883 to describe large public monuments and then in 1889 as a label for tall office blocks, coming into widespread use over the next decade . Identifying the first "true skyscraper" is not straightforward, and various candidates exist depending on the criteria applied . George Post's New York Equitable Life Building of 1870, for example, was the first tall office building to use the elevator, while his Produce Exchange building of 1884 made substantial structural advances in metal frame design . The Home Insurance Building in Chicago, opened in 1885, is, however, most often labelled the first skyscraper because of its innovative use of structural steel in a metal frame design . </P> <P> The Home Insurance Building was a 138 - foot (42 m) tall, 10 - story skyscraper designed by William Le Baron Jenney, who had been trained as an engineer in France and was a leading architect in Chicago . Jenney's design was unusual in that it incorporated structural steel into the building's internal metal frame alongside the traditional wrought iron . This frame took the weight of the floors of the building and helped to support the weight of the external walls as well, proving an important step towards creating the genuine non-structural curtain walls that became a feature of later skyscrapers . The design was not perfect--some of the weight was still carried by masonry walls, and the metal frame was bolted, rather than riveted, together--but it was clearly a significant advance in tall building construction . </P>

When was the first skyscraper built in new york city