skyscraper 3D print model
The minimum height of a skyscraper building is controversial. In the United States and Europe, skyscrapers are considered to be buildings with a height of at least 150 m (500 ft). Emporis defines a skyscraper as a building above 100 meters, as opposed to just tall buildings (35 to 100 meters), and SkyscraperCity as a building above 200 meters. Skyscrapers above 300 m by definition of the Council on tall buildings and urban environment are called ultra-high , and over 600 m - mega-high(eng. megatall) .
The categorization of high-rise buildings and their ranking has some ambiguity due to the variety of measurement methods. Currently, the generally accepted criteria are those developed by the Council on tall buildings and urban environment.
According to these criteria, a building is a structure designed for use as a residential, office (commercial) or industrial premises. An essential characteristic of the building is the presence of floors. Thus, the described rating obviously does not include television and radio towers.
The Council proposes three criteria for measuring the height of the building (in all cases, measurements are made from the lowest significant entrance to the building):
structural height of the building — the height from the level of the sidewalk to the highest point of the structural elements of the building (including spires and excluding television and radio antennas and flagpoles). This is the main criterion. It is used in ranking the tallest buildings. to the highest available floor — the height of the building to the floor level of the highest available floor of the building. to the tip of the antenna / spire — the height of the building to the highest point of the antenna, spire, etc.