04-01-2013, 10:37 AM
Empire State Building
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The Empire State Building remained the tallest man-made structure in the world for 23 years before it was surpassed by the Griffin Television Tower Oklahoma (KWTV Mast) in 1954. It was also the tallest free-standing structure in the world for 36 years before it was surpassed by the Ostankino Tower in 1967.
The longest world record held by the Empire State Building was for the tallest skyscraper (to structural height), which it held for 42 years until it was surpassed by the North Tower of the World Trade Center in 1973.
About empire state building
The Empire State Building was the highest building in the world for forty Years. It was constructed in New York (USA) an era when American cities such as Chicago and New York competed to have the highest skyscrapers.
With a 102 stories it was the tallest building in the world for forty years. Only when the first tower of the World Trade Centre was completed in 1972 was it deposed as the highest building.
Designers
The architects, Shreve, Lamb and Harmon Associates, were given the brief of creating the tallest building in the world. To achieve this they decided to use a steel frame as the basic construction technique.
New york city climate
Generally summers of New York have a humid continental climate .
Weather in New York is heavily influenced by two continental air masses: a warm, humid one from the southwest and a cold, dry one from the northwest.
the average high July temperature is 83 °F (28 °C.
in the majority of winter seasons, a temperature of −13 °F (−25 °C) or lower can be expected in the northern highlands (Northern Plateau) and 5 °F (−15 °C) or colder in the southwestern and east-central highlands .
Overview information
Address Location: The Empire State Building is located in New York City at 350 Fifth Av. (between 33rd street and 34th Street).
Height: Total height, including the lightning rod, is 1,454 feet and 1,250 feet, not including the lightning rod. The 102nd floor observatory is 1,224 feet above ground and 86th floor observatory is 1,050 feet above ground.
Builders: The construction firm Starrett Bros. & Eken were contracted to build it.
Observation decks
The Empire State Building has one of the most popular outdoor observatories in the world, having been visited by over 110 million people. The 86th-floor observation deck offers impressive 360-degree views of the city. There is a second observation deck on the 102nd floor that is open to the public
THE TECHNOLOGY OF CONSTRUCTION
In its day, the Empire State Building was constructed using up to date technology. A substantial concrete base was laid as a foundation to take the weight of the steel framework of the building. All the steel sections were prefabricated, that is, manufactured in a steel mill and transported to the construction site. The sections were manufactured to exact sizes to within 2mm tolerance and prepared so that they could either be bolted together or joined with rivets. It only took three days for the sections to be manufactured in the steel mill, transported and positioned in the framework as part of the buildings structure.