\nMonadnock Building South Facade<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n \n \n- It was the rapid growth in the population that originally promoted the construction of high-rise buildings. In New York from roughly half a million in 1850, the city\u2019s population grew to 1.4 million by 1899.<\/li>\n
- The buildings rose higher and higher with the spread of pioneering construction methods \u2013 such as the steel skeleton or reliable deep foundation methods \u2013 as well as the invention and development of the elevator.<\/li>\n
- More and more skyscrapers rose higher and higher on the solid ground and, New York demonstrated what was meant by \u201curban densification\u201d.<\/li>\n
- The increase in the high buildings came together with technological development.<\/li>\n
- Before these inventions buildings of over six stories were rare because the materials could not support the weight and very impractical for his inhabitants.<\/li>\n
- Later, with the development of the elevator and water pumps the industry of skyscrapers has been seen increasingly high in places.<\/li>\n
- Modern skyscrapers are built with resistant materials such as steel, glass, reinforced concrete, and granite.<\/li>\n
- Many of the techniques and materials which are also used for \u201cnormal\u201d buildings today would never have been invented and would never have become established if high-rise construction had not presented a\u00a0 challenge in terms of technical feasibility.<\/li>\n<\/ul>\n
Gilbert said: A skyscraper is a machine that makes the land pay.<\/p><\/blockquote>\n<\/div>\n<\/div>\n \n The Timeline of Structural Growth<\/h3>\n<\/div>\n\n \u00a0Ancient Rome<\/h4>\n\n \n- Seven-story wooden tenement buildings of timber and masonry construction.<\/li>\n
- After the great fire of Nero, new brick and concrete materials were used in the form of arch and barrel vault structures.<\/li>\n
- Masonry and timber the two leading materials for the next eighteen centuries.<\/li>\n<\/ul>\n<\/div>\n
Chicago<\/h4>\n\n \n- 1891 16-story Monadnock Building reaches the limits of masonry with 2 m thick walls.<\/li>\n
- 1885 11-story Home Insurance Building, the first high-rise totally supported by a metal frame (wrought iron).<\/li>\n
- 1889 9-story Rand-McNally Building, first all steel-frame high-rise.<\/li>\n
- 1891 20-story Masonic Temple, diagonal bracings introduced in the fa\u00e7ade frames to form vertical trusses.<\/li>\n<\/ul>\n
New York<\/h4>\n\n- 1913 60-story Woolworth Building (considered the world\u2019s first \u201cskyscraper\u201d).<\/li>\n
- 1931 102-story Empire State Building (1,250 ft tall).<\/li>\n
- The golden age of American skyscraper construction ended with the depression of the 1930s.<\/li>\n
- It was not until several years after WW II that skyscraper construction recommenced.<\/li>\n
- Instead of increases in height, modern developments brought new structural systems, improved material qualities, and better design and construction techniques.<\/li>\n
- It was not until 1970 that the Empire State Building was eclipsed by the 110-story WTC North Tower (1,353 ft), and then in 1974 by the Sears Tower (1,450 ft).<\/li>\n<\/ul>\n
NEED OF MULTI-STOREYED DEVELOPMENTS<\/h4>\n
|