Moreover, the levels must be easily and equally accessible via reliable elevators. Like any tall building, key pillars in the design and construction of skyscrapers are creating safe, functional and comfortable spaces in a high rise building. The Abraj Al Bait Towers, 2012, Mecca, Saudi Arabia Supertall skyscrapers denote buildings that are higher than 300 metres/984 feet and Megatall skyscrapers refer to buildings exceeding 600 metres/1969 feet. During the 20 th century alongside advancements in construction technology the definition was refined to include only buildings that were more than 40 floors and taller than 150 metres/492 feet.

In the late 19 th century the term skyscraper was applied to buildings of 10 storeys or more. The Mexican architect and historian Francisco Mujica, (1899-unknown) saw the Home Insurance Building by William Le Baron Jenney (1885) in Chicago as the first skyscraper while the American art historian James Carson Webster (1905-1989) gave the title to the Masonic Temple Building by Daniel Burnham (1892, demolished 1939) in Chicago. Henry-Russell Hitchcock (1903-1987) was an American architectural historian who supported this view. Post (1875, demolished 1914) in Manhattan and the Tribune Building by Richard Morris Hunt (1875) also in Manhattan as the first skyscrapers built. He saw both the Western Union Building by George B. Montgomery Schuyler (1843-1914) was aВ highly influential critic, journalist and writer who wrote across art, literature, music and architecture. This view is supported by the online Arts Encyclopaedia. There are a few different buildings in the period between 18 that vie for the title of the first skyscraper.Д¬arl Condit (1914вЂ“1997)В was an American historian of urban and architectural history and attributed the title of the first skyscraper to the Equitable Life Assurance Building (1870, demolished 1912) by Arthur Gilman and Edward H.

Skyscraper construction