the Empire State Building

Features
 
The Empire State Building rises to 1,250 feet (381 m) at the 102nd floor, and its full structural height (including broadcast antenna) reaches 1,453 feet and 8 9/16th inches (443 m). The building has 85 stories of commercial and office space (2,158,000 square feet / 200,465 square meter) and an indoor and outdoor observation deck on the 86th floor. The remaining 16 stories represent the spire, which is capped by a 102nd floor observatory, and atop the spire is an antenna topped off with a lightning rod. The Empire State Building is the first building to have more than 100 floors. The building weighs approximately 370,000 tons (330,000 metric tonnes).

The Empire State Building has 6,500 windows, 73 elevators and there are 1,860 steps from street level to the 102nd floor. It has a total floor area of 2,768,591 square feet (approximately 254,000 square metres).The base of the Empire State Building is about two acres, and the lobby is five stories tall. The building houses 1,000 businesses, and has its own zip code. The building was completed in one year and 45 days. The building’s original sixty-four elevators are located in a central core. Today, the Empire State Building has 73 elevators in all, including service elevators. It takes less than one minute, by elevator, to get to the 86th floor, where an observation deck is located. The building has 6, 500 windows, 70 miles of pipe, and 2, 500 feet of wire. The building weighs approximately 370,000 tons. The Empire State Building cost $40,948,900 to build, and today, it is partly owned by Donald Trump.

Unlike most of today's high-rise buildings, the Empire State Building features a classic façade. The modernistic stainless steel canopies of the entrances on 33rd and 34th Streets lead to two-story-high corridors around the elevator core, crossed by stainless steel and glass-enclosed bridges at the second floor level. The elevator core contains 67 elevators.[3]

The lobby is three stories high and features an aluminum relief of the skyscraper without the antenna, which was not added to the spire until 1952. The north corridor contains eight illuminated panels, created by Roy Sparkia and Renée Nemorov in 1963, depicting the building as the Eighth Wonder of the World alongside the traditional seven.

Long-term forecasting of the life cycle of the structure was implemented at the design phase to ensure that the building's future intended uses were not restricted by the requirements of future generations. This is particularly evident in the over-design of the building's electrical system