USA HISTORY

Detailed explanation-1: -As steel is stronger and lighter in weight than iron, the use of a steel frame made possible the construction of truly tall buildings. William Le Baron Jenney’s 10-story Home Insurance Company Building (1884–85) in Chicago was the first to use steel-girder construction.

Detailed explanation-2: -Stainless steel plate, coil and strip is used in abundance when constructing a high-rise building, and is used to create lintels, welded to form shelf angles, windposts, masonry supports, wall starters and much more.

Detailed explanation-3: -Modern skyscrapers are built with steel or reinforced concrete frameworks and curtain walls of glass or polished stone. They use mechanical equipment such as water pumps and elevators.

Detailed explanation-4: -The Home Insurance Building in Chicago, opened in 1885, is, however, most often labeled the first skyscraper because of its innovative use of structural steel in a metal frame design.

Detailed explanation-5: -The Rand McNally Building in Chicago was built in 1890 as the first all-steel framed skyscraper. Designed by Burnham and Root, it stood ten stories and cost $1 million to build at the time.