The U.S. is the birthplace of many iconic figures, movies, and buildings. The Statue of Liberty is one such work of art which stands as a symbol of freedom and independence. The Empire State building is another architectural icon in the center of New York, a city which in and of itself represents the U.S. Although these monuments appear majestic on the exterior, it is their interior composition that has kept them standing tall all these years. These and other international iconic structures embody the limitless ways steel builds culture around the globe.

The Statue of Liberty

A Gift from the French

An early sketch of the Statue of Liberty (Image courtesy of Copper Development Association Inc.)

More than a hundred years ago, the French sent a giant gift to celebrate America’s independence and to honor their friendship. The Statue of Liberty was first assembled in France, taken apart, shipped to the U.S. and then erected once more. It still stands tall, but even stronger today thanks to some important improvements made along the way.

As the Leaning Tower of Pisa is to Italy and the Eiffel Tower is to France, the Statue of Liberty embodies and represents America’s values of freedom and independence. Although Lady Liberty looks as smooth and stunning as her first debut, her journey was nothing short of rocky.

The statue was assembled in the U.S. in 1886. The iron and copper figure stood the test of time for almost 100 years. However, from 1982 to 1986, the statue underwent major reparations to so that Lady Liberty could make it to her centennial anniversary in 1986. It was a costly effort, and interestingly, marked one of the earliest joint efforts between the private and public sectors to fund a public project.  

What was wrong with Lady Liberty?

In short, the Statue of Liberty can be broken down into three main parts: the copper exterior (a sheet of copper that covers the entire statue), the internal skeleton or pylon made of puddled iron, and the Armature (a frame that connects the copper exterior to the internal skeleton).

The armature is made up of iron bars, 1300 of them, weighing 20 pounds each. Due to concerns about corrosion, layers of protective materials were applied to the bars, such as coal tar, aluminum, and lead. The coating itself weathered over the years and began to trap moisture. Thus, the iron started to rust.

Engineers decided to replace the entire armature, but with what?

Four prospective materials underwent extensive testing:

1. Aluminum bronze
2. Cupro-nickel
3. Ferralium
4. Stainless steel

The obvious choice was stainless steel as it would not rust, but also gift builders with its elasticity, light-weight, strength, and ductility.

Ten years after the repairs, in 1996, inspectors deemed the armature corrosion-resistant and it has remained so ever since. It would have been wiser and less costly to start with steel in the first place, as the engineers of the Empire State Building did, but it seems even steel could use… even more steel.

A Steel on Steel Testament

The Empire State Building Stands tall in the middle of New York City

In the Big Apple, The 86-year-old Empire State Building also recently underwent enhancements. Engineers added 39 tons of steel plates onto the building’s existing steel mast (the pointy part at the top, also known as the tower) to improve its carrying capacity.  

The planning for this project alone took over two years. Steelworkers, engineers, and builders had to take into account the bustling city below. High winds were another factor to consider. In the end, engineers came up with a cocoon-like encasing to be placed around the tower at the top of the building during construction to keep falling pieces in and strong winds out.  

Once set inside the cocoon, workers began wielding 39 tons worth of steel bars and plates onto the tower. The process was tedious as steel parts could only be transported into the cocoon in small pieces.  

In the end, the sturdier mast with a greater carrying capacity was worth the struggle.

The Empire State Building was built in 1931 and was the tallest building in the world at the time. Due to its unique design, the American Society of Civil Engineers named it one of the Seven Wonders of the Modern World. It is also a significant part of American culture, as the Empire State Building has been featured in more than 90 movies, including “King Kong” in 1933.  

Every year, the Empire State Building generates more than $100 million in revenue. About 20% of the revenue comes from the antennas attached to the 200-ft-tall steel broadcast tower. The remaining 80% is generated by the flocks of tourists that visit from all over the world, confirming the Empire State Building as an international landmark.  

However, it is not the only building receiving international attention and recognition.

The Leaning Tower of Abu Dhabi

The Capital Gate Building in Abu Dhabi, UAE leans westward in the Abu Dhabi National Exhibition Centre complex (Image courtesy of Abu Dhabi National Exhibition Center)

Abu Dhabi is another country where steel lays the foundation for iconic buildings. The Capital Gate Building may not have a long history, but it is an architectural wonder. It is often compared to Italy’s Leaning Tower of Pisa, but it has four times leaner The Capital Gate leans to the west a whopping 18 degrees.

How is this possible?

Engineers used a technique called pre-cambered core. Basically, they offset the core to counter the gravitational force created by the leaning mass of the building. The core or base of the building is a 7-foot mass of steel mesh and concrete locked down to almost 500 piles, which are drilled 100 feet into the ground. The external skeleton called a diagrid is also made of steel. These features, as well as some extensive math equations, allow the building to stand tall, at an angle.

The landmark leans in the center of the Abu Dhabi National Exhibition Centre complex and the Capital Centre master development. It captured international attention when The Guinness Book of World Records confirmed the Capital Gate Building as the “World’s furthest leaning man-made tower” in 2010.  

The list of iconic steel structures is endless…

Although the ones we discussed are just three iconic structures, it’s easy to see why steel makes up so many other buildings, statues, and memorials all over the world.  In the U.S. alone, iconic structures such as the Brooklyn Bridge, the Gateway Arch in St. Louis and the Willis (Formerly Sears) Tower are all made of steel.

Steel is cheaper, more sustainable and more durable than other materials such as iron and wood.

In addition, emerging technology will only further enhance the compatibility of steel for architecture and construction. One promising area of innovation is 3D printing for buildings.

The Mesh Mould 3D Printer developing a steel frame (Image courtesy of Gramazio Kohler Research)

Printing Steel in 3D

The typical concrete construction process consists of:

1. Setting up a steel/metal frame (rods) for the building
2. Pouring concrete over the rods
3. Formwork- using a wooden “shell” to hold the concrete in place as it dries

The problem with this process is the formwork. Because custom-made formwork is extremely expensive and non-reusable, builders opt for standardized, block-shaped formwork. This limits design creativity on top of the economic and environmental inconvenience.

Mesh Mould is a digital 3D printer in the works by researchers at the ETH Zürich research institute. The printer would produce steel frameworks that are both fine and dense, so that poured concrete would not seep out before it solidifies. The developers of Mesh Mould also created a special concrete mix to accompany the steel frames. Mesh Mould would eliminate formwork completely. Not only will this make the whole construction process more sustainable, it will lower material expenses and also save time. Others have taken notice as well. Mesh Mould received the 2016 Swiss Technology Award.

Statues, building, and monuments can be made of numerous different materials. However, when exploring iconic buildings and monuments that have stood the test of time and breached scientific barriers, steel proves to be the perfect fit.

“Second Avenue Subway Project Causes 50% Rise in Prices” – New York Times, September 2, 1929

The idea for a Second Avenue line was first brought up in 1920 when NYC’s public transit was at maximum capacity moving around 1.3 billion riders per year having doubled since the pre-war years. When an official plan was introduced in September 1929, home prices increased 50% almost overnight. However, because of the Great Depression, WWII, and then the Korean War; the city did not break ground until 1972. But then in 1975 the project was abruptly stopped when the city ran out of money. Revived again in the mid-nineties, construction on the current line started in 2007.

Proposed Second Avenue line in June 1950. (Courtesy of New York Transit Museum)

“But it is highly improbable that the Second Avenue subway… will ever materialize.” – New York Times, January 17, 1957

Aside from the financial and political reasons that delayed the train for a century, the fact is that it is much more difficult to construct a new subway line in today’s New York than it was in the 1920s. When New York’s first subway line opened in 1904 there were less people, less buildings, and less regulations. At that time, crews would use the “cut and cover” method where they would close the road, dig up the street, and then cover it back up when finished – a feat that would be nearly impossible in today’s bustling Manhattan.

“Ground was broken yesterday for the Second Avenue subway.” – New York Times, October 28, 1972

In today’s New York, the city must use explosions (video) to help make way for the huge boring machines, reinforced with high-strength steel, that are able to cut underneath the foundation while cars and people are left undisturbed on the surface. Running 24 hours per day, these tunnel boring machines can dig around 50-60 feet per day leaving a huge underground path for the trains.

Second Avenue subway tunnel, May 21, 2015. (Photo courtesy of MTA)

While it is obvious that steel would be used in these projects, the sheer amount is astounding. From the tunnel boring machine to the steel wheels that ride on the steel tracks to the stainless steel subway cars — steel is everywhere. In fact, it was the advances made in steel technology in the 1880s that made New York’s first subway a reality. After the great blizzard of 1888 shut down city streets and brought down the electric power grid, the city started to make efforts to put things underground. In addition, the same advances in steel provided for taller and taller buildings that brought more and more people; so, the city needed a new form of transportation that could move everyone from their homes to their jobs. The NYC subway system started in 1904 with just 28 stations – it now has 468 stations running a total distance of 1,055 km (656 mi).

From the steel beams to the steel tracks to the escalators carrying passengers – steel is everywhere. (Photo courtesy of MTA)

Subways have redefined urban life in the modern era. This feat of engineering, like so many other urban wonders, is only possible because of the steel used to dig, build, and operate the subways. Watch the short film below (11:31) to see how the Second Avenue line began – and how it ended 97 years later.

*Cover photo courtesy of MTA

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Both individuals and corporations must become more environmentally responsible, being mindful of the levels of waste water, trash and emissions produced both at home and in the office. Considering these factors in the architectural designs of the future, we can ensure a healthy and sustainable planet. Yet, a number of buildings are a step ahead and have already incorporated sustainability into their own designs, setting the precedent for future architectural endeavors. On this World Environment Day, let’s take a look at a few of them.

Northeast Asia Trade Tower (NEATT)

Standing 68 stories tall, the Northeast Asia Trade Tower in Songdo International Business District, Incheon, is the tallest structure in South Korea. It is also the crown jewel of POSCO’s leading innovative technology, utilizing revolutionary features such as a 3D exterior design, a seismic force resisting system and high level security and anti-disaster measures.

Yet, NEATT, which is a mix of office spaces, a luxury hotel, serviced residences and retail stores, also serves as a model of sustainable design strategies, carefully balancing energy conservation, increased indoor environmental quality and occupant comfort. Its range of passive design strategies, which include daylighting, natural ventilation and energy efficient HVAC systems, as well as its eco-friendly, non-toxic construction materials, have ensured that the skyscraper is not only friendly to the environment, but to its human inhabitants, too.

Monte Rosa Hut

Perched above the skiing mecca of Zermatt, Switzerland, the Monte Rosa Hut is a lodging space used by hikers in route to the summit of the same name on icy glacier treks. The five-story crystal-shaped building was constructed on stainless-steel foundations with a wooden spiral interior covered by a silver aluminum shell. During its construction, materials and workers were transported by train to Zermatt, requiring 3,000 helicopter trips.

The hut uses solar power for about 90 percent of its energy and heat requirements. Excess energy is stored in valve-regulated lead-acid accumulators, which ensure power in all kinds of weather. Large windows allow the sun to heat air inside the building, and melting glaciers in the area provide the lodge’s water supply, which is collected and stored in a nearby reservoir. (Image from http://bit.ly/1AJVsUa)

Meera Sky Garden

Perhaps no other building on this list is as one with nature as the Meera Sky Garden in Sentosa, Singapore. This eye-catching, eco-friendly home was designed by Guz Architects, and it overlooks the island’s harbor.

Divided into four distinctive floors, each of which is covered with a grass roof, the home appears as if it is four separate houses, yet is still seamlessly connected by a natural element. Not only are these garden-like spaces visually pleasing, but the grassy roofs help to keep the interior temperatures at a minimum, saving energy. (Image from http://bit.ly/1ddeBTx)

Pixel

While Pixel’s chaotic, colorful exterior is the first thing one might notice about the small office building in Melbourne, Australia, its sustainable design is what really makes it noteworthy. Some of its design innovations include a panel shade system that allows natural light into the office, while at the same time, reducing glare and heat. More impressively, Pixel utilizes wind turbines to generate its own electricity.

As Australia’s first carbon neutral office building, Pixel was also the first building to ever be granted a perfect score on the country’s Green Star sustainability rating system. (Image from http://bit.ly/1JoxIpS)

Bank of America

When the Bank of America building was erected in Manhattan, New York in 2009, it set the standard for all environmentally responsible buildings to come. Its base-to-roof insulating glass external structure enhances heat insulation while creating a large source of natural light, while the building’s extensive solar panels produce energy for the building.

And the Bank of America knows how to save water. Its greywater system collects and recycles waste from sinks and water fountains into the refrigeration system, while its catchment systems collect and save around 45 inches of rain that fall on the site each year. Such sustainable features landed the skyscraper the LEED Platinum Award, the highest level of the internationally recognized green building rating system.

The Change Initiative

In a city that is seemingly ever under construction, The Change Initiative (TCI), an eco-lifestyle shop that stocks everything from environmentally-conscious detergent to greywater recycling tools, sets itself apart from other buildings in Dubai.

Often noted as one of the most sustainable commercial buildings in the world, the majority of the materials used to create TCI are recyclable. The roof is coated with heat-reflective paint and is embellished with solar panels that generate about 40 percent of the building’s energy, while the building’s outer structure has three times the insulation of the average building. (Image from Gundeep Singh) 

For more information about current worldwide green initiatives and for ways that you can “consume with care,” check out the World Environment Day website.

Thanks to its strong tensile properties, steel is a very practical material, as it can be reused again and again, from one product to the next, while consistently maintaining its inherent qualities. In fact, according to the most recent data compiled by the Steel Recycling Institute (SRI), approximately 80% of steel used today has been previously recycled.

Eco-friendly and Economical Benefits

But durability isn’t the only thing that makes recycling steel so valuable. It’s eco-friendly and cost efficient, too. So much so that it takes 74% less energy to recycle steel than it does to make it from raw materials – enough to power almost a sixth of America’s homes for a year!

It’s also cheaper to reprocess steel than to mine iron ore, or to create new steel, which is an added bonus in today’s budget-conscious society.

How It Works

Typically, when a manufacturing product is no longer considered valuable to its owner, or the metal of a structure meets the end stages of its life, its steel components are picked apart as scraps. The scraps are then melted in high-temperature furnaces, which in turn liquefies the steel and burns off any remaining impurities. Once pure, the liquid metal is molded into new products, such as tools or engines.

Recently, however, some very clever minds have taken the way we use recycled steel to a whole new level.

Subway Cars Turned Underwater Reefs

Along the eastern seaboard, retired New York subway cars have found a new home on the floors of the ocean. And while it may seem that dumping these mammoth vehicles into the sea would be anything but helpful to the ecosystem, the trains that once transported New Yorkers across the Big Apple are transforming into habitats of millions of fish.

The project, which aimed to help the environment, was launched about 10 years ago by New York’s Metropolitan Transportation Authority (MTA).

After being decommissioned, cleaned and stripped of all removable items, some 25,000 cars were transported by barges and dumped off the coast. Although the campaign is no longer in operation, the cars have since been transformed into artificial reefs.

These unlikely habitats continue to provide plenty of space for invertebrates to live, and act as a hideaway for fish seeking protection from predators. The reef also functions as a source of food, offering more viable conditions than the sand bottom for the growth of various nutrients and organisms.

Old Bridge Gets New Life

While the steel which was once used on land is now being repurposed in water on the East Coast, the reverse is happening on the opposite end of the country.

After 77 years of linking San Francisco to Oakland, California’s Bay Bridge remains to be an icon of the region. Its structure, however, was deemed “earthquake unsafe” after a 1989 quake destroyed part of it. In 2013, its replacement opened to traffic and plans to deconstruct the defective bridge were set.

When scraps of the 58,000-ton steel structure were sold and distributed around the country and abroad after its first of three deconstruction phases, members of the community spoke up, demanding that parts be set aside to be reused in the area.

The Oakland Museum, in coordination with the Bay Area Transportation Authority (BATA), began to accept proposals for how the steel should be refurbished. Thus far, proposals have included everything from bus stops to rainwater catchment systems to sculptures that will retain the visual essence of the original bridge.

In a time when recycling is more important than ever, reprocessed steel is being reincarnated into structures of both function and form. Whether it be through urban sculptures or underwater habitats, recycled steel will continue to transform the way we see, use and better the world.

A historian, an Emmy award-winning British author and a BBC television producer, Deborah Cadbury has written a book called Dreams of Iron and Steel. The book’s main characters are those who ‘overcame the fear for a failure and did not give up on challenging’. Though the book’s time setting is distant from the ‘industrial revolution’, the story does not come across as irrelevant, because the details of each structure’s building process reflect ourselves who are also facing ‘new challenges’ today.

In addition, the subject of ‘steel’ overlaps with the history of POSCO, which started from nothing in the desolate Yeongil Bay in 1968. Both subjects are similar in the way that both had a person with a dream that comes to a reality and the world has changed from it. 

As a BBC television producer, Deborah Cadbury, produced a docudrama series known as ‘Seven Wonders of the Industrial World’ (2003) and started her writing for Dreams of Iron and Steel (2005) at the same time.

The Brooklyn Bridge (1883) 

John Roebling, a U.S immigrant from Germany, won the contract to build the largest bridge that stretches across the East River separating Manhattan and Brooklyn. According to Roebling’s blueprint, it was clear that the structure would develop as a 2km-long masterpiece that possesses both durability and symmetrical delicacy. The foundations were to sink 21m below the water level and the two main 84m-high towers would overlook a panorama of New York City.

However, while seeking for the right spot for the towers, John Roebling was faced with imminent death from a terrible accident. Thus, his son, Washington Roebling continued his father’s legacy as a ‘Man of Steel’ and 14 years of construction finally came to an end in May 24^th, 1883. Transforming the cityscape of New York, the Brooklyn Bridge has become a symbol of Roebling family’s great human spirit.

The Hoover Dam (1936) 

In the late 19^th century, the desert regions of Arizona and Nevada were considered as a hostile environment. Arthur Powell Davis, the Director of U.S. Bureau of Reclamation, realized that even the desert regions can flourish by making some improvements. Accordingly, he planned a project to drill through snow-covered highlands and valleys, and to use the 2,253 km-long Colorado River as a source of hydropower. He also intended to stabilize the river, which experiences severe floods and droughts. Started in 1931 and finished by 1936, the Hoover Dam was soon to break all world records with its height equivalent to 60 stories and a volume bigger than the Great Pyramids at Giza.​

At the height of the Great Depression, poverty-stricken workers had to face explosions, carbon monoxide poisoning and sunstrokes, only to earn a few dollars a day. But the construction had to go on. The chief engineer, Frank Crowe, nevertheless, managed to complete ahead of schedule and under budget with his own know-how in structural management. Remaining as another masterpiece that represents an extraordinary ability of humankind, the dam epitomizes a clear evidence of overcoming a limitation through revolutionary structural improvements.

The ‘Great Eastern’ Ship (1858) 

(Photo from Wikipedia http://bit.ly/13zlY2w)

The ‘Great Eastern’, also known as the ‘crystal palace of the sea’, is distinctive in many ways other than being the largest ship in the world when it first launched on the River Thames in London. For instance, the design incorporated a double hull on the side and the bottom part of the ship which improved the draft line. However, the scale of the ship was too out of the ordinary for its time. Intriguingly, a distinguished mechanical and civil engineer, Isambard Kingdom Brunel dreamt of ‘creating a floating city made of iron and transporting 4,000 people to Australia, the opposite side of the earth’. Finishing his blueprints in 1852, Brunel initiated the construction on the River Thames in 1857. Living on the ship for two years, he poured his passion into this project. Unfortunately, in September 1959, just before the Great Eastern’s maiden voyage, Brunel died of a terrible stroke. Despite the failure in commercial use, Brunel’s name remains in the shipbuilding history for his colossal-scale ship and shipbuilding techniques.

The Bell Rock Lighthouse (1811)

(Photo from Wikipedia http://bit.ly/1t5eBfA) 

A creator of the Bell Rock Lighthouse, Robert Stevenson is the grandfather of Robert Louis Stevenson, an author of Treasure Island. The lighthouse was built on a 400m-wide reef 17km out to sea.  Numerous ships went down by crashing into the large reef that was submerged for most of the day. Although everyone believed it to be impossible, the construction of a lighthouse lasted for three years from March 1807 to October 1810. During the process, many workers were sacrificed and the structure collapsed a few times. Battling against the difficulties, Stevenson finally completed the lighthouse in February 1811. To this day, the lighthouse shines out across the North Sea forever.

Bazalgette’s London Sewers (1874)

(Photo from Wikipedia http://bit.ly/1CtGfFM) 

In the 1800’s, over 30,000 people died from three epidemics of cholera in London. In the summer of 1858, while the Great Eastern was preparing for her maiden voyage, the ‘Great Stink’ was sweeping through the city. A 37-year-old civil engineer, Joseph Bazalgette proposed a bold scheme for the problem. It only took him 12 weeks to outline his solution for the problem that lasted for hundreds of years. The key to his proposal was ‘simplicity’.

Previous sewage system and pipes all lead to both sides of the river. Bazalgette’s plan was to simply move various pipes and link the sewers to be connected. The plan seemed easy on the surface but the reality required to link 130km of sewage superhighway and 1,600km of street sewers, creating one large network of underground sewer system. It seemed as an implausible challenge at the time but eventually Bazalgette’s design brought the first modern sewer system. It not only saved the city of London and its inhabitants, but also became a standard model of sewer systems worldwide.

The Panama Canal (1914) 

The first person to plan an excavation of the Panama Canal was Charles V, the emperor of Spain in 1529. However, the actual project was discussed only in 1881 by a Frenchman, Vicomte Ferdinand de Lesseps, who completed building the Suez Canal in 1869. Regardless of his age at 74, Ferdinand de Lesseps had a vision to cut a path across continent through Panama connecting the Atlantic Ocean and Pacific Ocean. Although the plan was grandiose, the project execution faced insurmountable difficulties. The workers faced the tropical heat of Panama, impenetrable jungle, devastating mudslides, deathly tropical diseases and other obstacles. The lavish dream had cost lives of many workers and left company to bankrupt in 1889. To top it off, Vicomte Ferdinand de Lesseps also died soon after. The vivid dream eventually came true 25 years under the leadership of civil engineer, Colonel George Washington Goethals.

The Panama Canal is perceived as a miraculous triumph of technology in modern history. Being the longest canal in the history, the 80km-long Panama Canal took 35 years to complete. Moreover, the construction cost approximately 639 million dollars and lives of 25,000 workers. This sacrifice, however, achieved a miracle of shortening a 22,000km-long journey to a 9,500km journey of traveling from New York to San Francisco.

The Transcontinental Railway (1869) 

(Photo from Wikipedia http://bit.ly/1ACtjLw) 

During the American Civil War in 1857, the hero of the Union Army General William T. Sherman said “This will be the work of giants. And, President Lincoln is the only person that I know who can battle through this.” ‘This’ refers to the Transcontinental Railway, reaching across the American continent. Back then, it took about 6 months to travel from New York to California by ship. Under the administration of Abraham Lincoln, the Transcontinental Railway’s construction came to a start in 1860, in the midst of the American Civil War. As a solution to reunite the separated nation, Lincoln decided to initiate the railway construction which was possible due to repeated successes in the steel industry. Two railroad companies, Central Pacific Railroad Company from the west and Union Pacific Railroad Company from the east, started the construction separately from each end of the line. The completed railways were finally opened in 1869. About a decade later, it was possible to make the record of 83 hours and 39 minutes to travel 5,600km across the continent. Consequently, the railways acted as a catalyst for the U.S to develop as a key industrial nation.

As these unique masterpieces suggest, the slow but evolving industrial revolution was accomplished by continuous effort and endless passion of our ancestors. As they were the individuals who struggled to realize their dreams and leave marks on the world, POSCO will inherit their ambitions and continue to pursue further advancements of the overall industry.

(Image: http://en.wikipedia.org/wiki/High_Line)

Following the first edition of the series, we would like to discuss about urban renewal cases of neglected railroads. One of the best known cases, the High Line of New York has a meaning more than just a simple ‘park’, since it is an urban garden built upon the abandoned railway lines of 1930s. The High Line has become one of the top visitor attractions in New York and an emblem of the historical decline from the industrial heyday. Let’s explore further about the High Line and other example of rebirths of former railroads.

‘The High Line Park’ Started With a Simple Interest of an Ordinary Citizen

(Image: http://it.wikipedia.org/wiki/High_Line)

In 1847, life-threatening accidents were frequent in New York City because freight trains, carriages, bicycles and pedestrians kept colliding down on Manhattan’s Far West Side. In order to solve this problem, the City of New York and Metropolitan Transportation Authority planned to construct an elevated railway in 1929. Finally, it was launched in 1934 and enabled cargo to be delivered directly from the railroad to factories and warehouses.

However, the railroad transportation drastically declined as highway construction and cargo truck started to advance in the 1950s. The overhead railway vanished into the history after the last train squealed its way in 1980. It has been discarded for 20 years until Rudolph Giuliani, the former mayor of New York City, agreed to dismantle the overhead railway in 1999.

On the threshold of the demolition, two civic activists formed a non-profit organization called, ‘Friends of the High Line’. They saw the potential that this useless, old heritage can be redeveloped into a unique overpass. The ‘Friends of the High Line’ consisted not only the regional residents but also various other people such as entrepreneurs and fashion designers. Furthermore, the organization proceeded their project by benchmarking Promenade Plantée of France.

Keep it simple, keep it wild, keep it quiet, and keep it slow!
This redesigning project was a collaboration of James Corner of Field Operations, a landscaping firm, Diller Scofidio+Renfro, an architecture studio, and a plant designer named Piet Oudolf. The main design concept of the High Line was to ‘keep it simple, keep it wild, keep it quiet, and keep it slow’. This design principle intended to maintain the traces of the overpass area including the wildflowers and vines grown out during the abandoned periods. The High Line embodies an extraordinary meaning since it is a creation of innovative designers, active citizens, generous men of means, and supportive corporates.

As shown by the cases above, it is quite difficult to preserve a trace of a certain city. It requires the government’s support while having complicated relations with the profit of property owners. Above all, it requires proactive and voluntary efforts of its citizens. As a city harmonizes over time, it asks for continuous efforts and patience of many people living within the city.

Promenade Plantée, the Archetype of a Renovated Urban Garden

(Image: http://en.wikipedia.org/wiki/Promenade_plant%C3%A9e)

The original model of reusing old transportation corridors is the Promenade Plantée in Paris, France. For cargo transportation, Paris had opened up a bridge-type railroad that penetrates the center of Eastern Paris in 1859. However, this railroad was deactivated in 1969 and deteriorated into a crime-prone area.

In the early 1980s, Paris decided to transform this railway, the city’s headache, into the ‘Promenade Plantée’, meaning ‘a walking trail’, by planting green lives around the area. Unlike the citizen-driven project of the High Line, the Promenade Plantée project was organized by the city authorities of Paris. And, the design of the site was developed by a landscaper, Jacques Vergely and an architect, Philippe Mathieux while architects named Patrick Berger and Jamine Galiano designed the pedestrian overpass shopping district.

The abandoned railroad built 10m from the ground level transformed into a floating esplanade, penetrating the city. Especially, the rusty area that was about to be demolished was reborn into the pedestrian overpass shopping district. And, the 70 redbrick-arches under the railroad redeveloped into ‘Viaduc des Arts‘, an art district of handcraft workshops, galleries, furniture exhibition halls, and cafés. Though the pedestrian overpass shopping district was completed only in 2000, it became one of the most popular spots among Parisians along with the Promenade Plantée.

Recreating the City While Maintaining its Previous Identity
A city tends to flow along with the lives of the citizens. As it shown by the case of Paris, the marks that embody the original identity of the city must be preserved as much as possible. The marks could be stunning and valuable or not at all. Nevertheless, it is significant because these traces of the city could contribute as an important historical asset for the future generation, as the traces have evolved a long period together with the citizens. Accordingly, cities develop their unique identities and this cannot simply happen only with a concept for city development but must stem from a sincere echo within our lives.

A city is a place where happy moments are accumulated, but it also encompasses the memories that people would like to forget. Thus, a city cannot simply disappear by eliminating the previous objects and replacing them with the new ones, because every moment has traces of our lives and becomes the history that brought us to today. In fact, when people recall the past and add value to it, the city can bring out its genuine beauty as a place where people strive to continue their lives with each other.

*This story was originally developed by Kim, Mi-na – Participated in Hanoi master plan, Ho Chi Minh Thu Thiem Binh Khanh master plan, and other international urban development projects especially in Da Nang, Tay Ninh, Binh Phuoc and more. Currently, she is executing planning and marketing for global business projects at POSCO A&C. She is interested in the topics related to public-nature of cities and urban renewal.