wonders created by CIVIL ENGINEERS

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Tuesday, August 31, 2010

Empire State Building

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The Empire State Building is a 102-story landmark Art Deco skyscraper in New York City at the intersection of Fifth Avenue and West 34th Street. Its name is derived from the nickname for the state of New York, The Empire State. It stood as the world's tallest building for more than forty years, from its completion in 1931 until construction of the World Trade Center's North Tower was completed in 1972. Following the destruction of the World Trade Center in 2001, the Empire State Building once again became the tallest building in New York City and New York State.

The Empire State Building has been named by the American Society of Civil Engineers as one of the Seven Wonders of the Modern World. The building and its street floor interior are designated landmarks of the New York City Landmarks Preservation Commission, and confirmed by the New York City Board of Estimate. It was designated as a National Historic Landmark in 1986. In 2007, it was ranked number one on the List of America's Favorite Architecture according to the AIA. The building is owned and managed by W&H Properties.

The Empire State Building is the third tallest skyscraper in the Americas (after the Willis Tower and Trump International Hotel and Tower both in Chicago), and the 15th tallest in the world. It is also the fourth tallest freestanding structure in the Americas. The Empire State building is currently undergoing a $550 million renovation, with $120 million to be utilized in an effort to transform the building into a more energy efficient and eco-friendly structure.

Design and construction

The Empire State Building was designed by William F. Lamb from the architectural firm Shreve, Lamb and Harmon, which produced the building drawings in just two weeks, using its earlier designs for the Reynolds Building in Winston-Salem, North Carolina, and the Carew Tower in Cincinnati, Ohio (designed by the architectural firm W.W. Ahlschlager & Associates) as a basis.[citation needed] Every year the staff of the Empire State Building sends a Father's Day card to the staff at the Reynolds Building in Winston-Salem to pay homage to its role as predecessor to the Empire State Building. The building was designed from the top down. The general contractors were The Starrett Brothers and Eken, and the project was financed primarily by John J. Raskob and Pierre S. du Pont. The construction company was chaired by Alfred E. Smith, a former Governor of New York and James Farley's General Builders Supply Corporation supplied the building materials. John W. Bowser was project construction superintendent.

Excavation of the site began on January 22, 1930, and construction on the building itself started symbolically on March 17—St.Patrick's Day—per Al Smith's influence as Empire State, Inc. president. The project involved 3,400 workers, mostly immigrants from Europe, along with hundreds of Mohawk iron workers, many from the Kahnawake reserve near Montreal. According to official accounts, five workers died during the construction. Governor Smith's grandchildren cut the ribbon on May 1, 1931. Lewis Wickes Hine's photography of the construction provides not only invaluable documentation of the construction, but also a glimpse into common day life of workers in that era. In particular the photo of a worker climbing a stay cable is talismanic of the era and the building itself.

The construction was part of an intense competition in New York for the title of "world's tallest building". Two other projects fighting for the title, 40 Wall Street and the Chrysler Building, were still under construction when work began on the Empire State Building. Each held the title for less than a year, as the Empire State Building surpassed them upon its completion, just 410 days after construction commenced. The building was officially opened

on May 1, 1931 in dramatic fashion, when United States President Herbert Hoover turned on the building's lights with the push of a button from Washington, D.C. Ironically, the first use of tower lights atop the Empire State Building, the following year, was for the purpose of signalling the victory of Franklin D. Roosevelt over Hoover in the presidential election of November 1932.

Height records and comparisons

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. With the destruction of the World Trade Center in the September 11, 2001 attacks, the Empire State Building again became the tallest building in New York City, and the second-tallest building in the Americas, currently surpassed only by the Willis Tower in Chicago. When measured by pinnacle height, the Empire State Building is currently the third-tallest building in the Americas, surpassed only by the Willis Tower and the Trump International Hotel and Tower.

One World Trade Center, currently under construction in New York City, is expected to exceed the height of the Empire State Building upon completion. It will be 1,776 feet (541 m) tall, becoming the tallest building in the city, the country and the Americas.

Architecture

The Empire State Building rises to 1,250 ft (381 m) at the 102nd floor, and including the 203 ft (62 m) pinnacle, its full height reaches 1,453 ft–89⁄16 in (443.09 m). The building has 85 stories of commercial and office space representing 2,158,000 sq ft (200,500 m2). It has an indoor and outdoor observation deck on the 86th floor. The remaining 16 stories represent the Art Deco tower, which is capped by a 102nd-floor observatory. Atop the tower is the 203 ft (62 m) pinnacle, much of which is covered by broadcast antennas, with a lightning rod at the very top.

The Empire State Building was the first building to have more than 100 floors. It has 6,500 windows and 73 elevators, and there are 1,860 steps from street level to the 103rd floor. It has a total floor area of 2,768,591 sq ft (257,211 m2); the base of the Empire State Building is about 2 acres (8,094 m2). The building houses 1,000 businesses, and has its own zip code, 10118. As of 2007, approximately 21,000 employees work in the building each day, making the Empire State Building the second-largest single office complex in America, after the Pentagon. The building was completed in one year and 45 days. Its original 64 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 70 mi (113 km) of pipe, 2,500,000 ft (760,000 m) of electrical wire,[44] and about 9,000 faucets.[citation needed] It is heated by low-pressure steam; despite its height, the building only requires between 2 and 3 psi (14 and 21 kPa) of steam pressure for heating. It weighs approximately 370,000 short tons (340,000 t). The exterior of the building was built using Indiana limestone panels.
The Empire State Building cost $40,948,900 to build.

Unlike most of today's skyscrapers, the Empire State Building features an art deco design, typical of pre-World War II architecture in New York. 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.

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 previous generations. This is particularly evident in the over-design of the building's electrical system.


Monday, August 30, 2010

Hydropolis Underwater Hotel, Dubai, United Arab Emirates

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Currently under construction in Dubai, Hydropolis will be the world's first luxury underwater hotel. It will include three elements: the land station, where guests will be welcomed, the connecting tunnel, which will transport people by train to the main area of the hotel, and the 220 suites within the submarine leisure complex. It is one of the largest contemporary construction projects in the world, covering an area of 260 hectares, about the size of London's Hyde Park.

"Hydropolis is not a project; it's a passion," enthuses Joachim Hauser, the developer and designer of the hotel. His futuristic vision is about to take shape 20m below the surface of the Persian Gulf, just off the Jumeirah Beach coastline in Dubai.
There are only a few locations in the world where such a grandiose dream could be realised. A high proportion of today's architectural marvels are materialising like fanciful mirages from the desert sands. We have come to expect extravagant enterprises to be mounted in the Middle East, and especially in Dubai. "This venture could only be born here in Dubai," says Hauser. "It [has] a very open-minded, international community - and that's what makes it so special."

The land on which Hydropolis is being built belongs to His Highness General Sheikh Mohammed Bin Rashid Al Maktoum, Crown Prince of Dubai. It was his last free beach property on this stretch of coast. The project is a fantastic one, yet Sheikh Mohammed's success record with comparable schemes instils confidence that science fiction can become fact. With his support, several companies have been formed to kick-start this phenomenal project, and around 150 firms are currently involved.

"There have been many visions of colonising the sea – Jules Verne, Jean Gusto and several Japanese architects – but no one has ever managed to realise this dream," says Hauser. "That was the most challenging factor, and that's what makes it so fascinating. Despite being a dream of mankind for centuries, nobody has ever been able to make living underwater possible."

UNDERWATER HOTEL DESIGN

The original idea for Hydropolis developed out of Hauser's passion for water and the sea, and goes much deeper than just building a hotel underwater. More than just curiosity, it is a commitment to a more far-reaching philosophy. "Once you start digging deeper and deeper into the subject, you can't help being fascinated and you start caring about all the associated issues," he explains. "Humans consist of 80% water, the earth consists of 80% water; without water there is no life."

Hydropolis reproduces the human organism in an architectural design. There is a direct analogy between the physiology of man and the architecture. The geometrical element is a figure eight lying on its side and inscribed in a circle. The spaces created in the basin will contain function areas, such as restaurants, bars, meeting rooms and theme suites. These can be compared to the components of the human organism: the motor functions and the nervous and cardiovascular systems, with the central sinus knot representing the pulse of all life.

The ballroom, located at this nerve centre, will have asymmetrical pathways connecting the different storeys along ramps. A large, petal-like retracting roof will enable the staging of open-sky events. Staircases, lifts and ramps will provide access to the ballroom, while flanking catering areas will supply banquets and receptions.

HYDROPOLIS LAND STATION

In order to enter this surreal space, visitors will begin at the land station. This 120m woven, semicircular cylinder will arch over a multi-storey building. On the lowest level passengers board a noiseless train propelled by fully automated cable along a modular, self-supporting steel guideway to Hydropolis. A just-in-time and on-demand logistical system will facilitate efficient supply of goods to the hotel.

"The £300m, 220-suite hotel is scheduled to open in 2009."

The upper storeys of the land station house a variety of facilities, including a cosmetic surgery clinic, a marine biological research laboratory and conference facilities. On the lower levels are the staff rooms, goods storage and loading areas, and hotel and parking areas.

The land station also includes a restaurant and high-tech cinema screening the evolution of life in the ocean and the history of underwater architecture. As a finale, the screen will open to reveal the real-life Hydropolis. A viewing platform at the front opening of the spanning roof will allow views of the architecture as well as the light shows of Hydropolis.

MARINE ARCHITECTURE

This structure promises to be a conceptual as well as a physical landmark. While human beings accept the existence of water, we have only a superficial appreciation of its significance. "We waste it, go swimming in it and generally take it for granted," says Hauser. "Humans could actually live self-sufficiently underwater, generating energy, nurturing food supplies and so on. This is why we are starting a foundation to demonstrate something of the importance of water in our lives.

"My general plan was to create a living space in the sea. My initial proposal was a deep-sea project, which looked very different. I had to adjust to the local reality of the natural surroundings and change to a shallow-water construction.

"We want to create the first ever faculty for marine architecture because I believe that the future lies in the sea, including the future of city planning. I am certain that one day a whole city will be built in the sea. Our aim is to lay the first mosaic by colonising the sea."

Hauser plans to incorporate many different elements associated with the sea. The cosmetics will be ocean-based, the cinemas will screen films that focus on aquatic themes and a children's seaworld will educate as well as entertain.

He views his creation as a place where those who do not dive – or do not even swim – can experience the tranquillity and inspiration of the underwater world. "We are expecting around 3,000 visitors a day in addition to the hotel guests. The aim is to inspire people to develop a new awareness of the sea."

As well as emphasising the positive aspects of water, Hauser also believes we are systematically destroying marine life, and thus wishes to draw attention to various dangers and problems, such as the loss of algae and the destruction of the coral reefs.

 

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