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.

Revolutionary Features of Korea’s New Landmark, Northeast Asia Trade Tower

#1. 3-Dimensional Exterior Design Minimizes the Effect of Wind Load

POSCO Engineering & Construction, the construction arm of Korea’s top steelmaker POSCO, applied its most innovative and cutting-edge technology in the construction of NEAT Tower, the tallest building in Korea. To minimize the effect of wind load on the building, the tower was constructed under a 3-dimensional exterior design which features a trapezoid at the base which gradually transforms into a triangle at the top.

#2. Seismic Force Resisting System Utilizing Belt Truss and Outriggers

NEATT’ s main frame system consists of 27 perimeter columns, six corner mega columns, a core wall, and an outrigger/belt truss, all of which are systemically integrated. The core wall takes about 65% of the total gravity load and 70% of the total overturning moment due to wind load. The outrigger systems are installed on the 34^th and 65^th floors of NEATT and the structural design was performed in such a way that the axial load developed in columns due to the outrigger’s share of the overturning moment could also be resisted safely. The outrigger and belt system takes 30% of the overturning moment.

The core walls and columns of NEATT, an SRC structural building, were constructed with 12,841 tons of POSCO’s globally renowned high-strength reinforced concrete and SD40 reinforcing bars. The corner mega column was, for the first time in the construction of skyscrapers in Korea, built with 7,870 tons of SMC570TMC steel. The glass curtain wall enveloping the exterior was installed using low-emissivity glass. Low-emissivity (low-E) coatings are microscopically thin metal layers that are deposited on a window surface to help keep heat on the same side of the glass from which it originated. Glass with Low-E coatings reflect infrared light while allowing visible light, keeping the movement between interior and exterior heat to a minimum.

* Technical specifications of the Northeast Asia Trade Tower referenced from “NEATT Design of Structural System,” Dong Yang Structural Engineers Co., 2014.

#3. High Level Security and Anti-Disaster Measures

As the landmark building of Korea, Northeast Asia Trade Tower boasts high level security and anti-disaster measures. For example, it deployed global positioning system (GPS) sensors to help ensure the real-time measurement of vibration, displacement or deformation in the building caused by external factors, making it possible to preemptively identify any issues that could compromise the safety or structural integrity of the building. Additionally, the Seismic Force Resisting System can withstand magnitude 7-8 earthquakes.

In addition, the anti-disaster control center located on the first basement floor provides the ability to centrally monitor the power supply, lighting, CCTV system, access control and other utility services. The 30^th and 60^th floors each have a shelter that can accommodate up to 4,000 occupants safely and promptly in the event of an emergency, such as a fire. The building has 29 elevators operating at a speed of 420 meters per minute and capable of carrying users from the ground floor to the observatory on the 65^th floor within one minute.

< The anti-disaster control center located on the first basement floor provides the ability to centrally monitor the power supply, lighting, CCTV system, access control and other utility services. >

Going Green: A Striking Example of Sustainable Design

NEATT serves as a model of sustainable design strategies, carefully balancing energy conservation, increased indoor environmental quality, and occupant comfort. With a range of passive design strategies such as daylighting, natural ventilation and energy-efficient HVAC systems, the tower targets to achieve LEED^® Silver certification.

Like other buildings in New Songdo City, NEATT purchases district hot water from a new, highly efficient cogeneration facility located nearby. Hot water, used for heating and cooling via absorption chillers, is generated from waste heat recovered during the process of producing electricity. The building is estimated to reduce source-energy CO2 emissions by 6,000 tons per year when compared to a “standard” code-compliant office tower with on-site electric chillers and a natural-gas boiler plant.

Furthermore, the paint, carpets and wallpaper used in the construction of the building’s interior were of eco-friendly, non-toxic material in order to prevent the occurrence of Sick Building Syndrome.

* NEATT sustainability design features referenced from articles by ARUP and Built Expressions

<A Night View of the NEAT Tower and Songdo International Business District, Incheon>

The Northeast Asia Trade Tower is expected to boost the regional economy along with an increase in floating population, markets, employment and visitors from overseas once companies move into the building. Moreover, it appears to give momentum to draw more businesses to Songdo International Business District since clients of Daewoo International and other companies engaged in the related fields are expected to move into the building. We hope that NEAT tower will soon become Korea’s most well-known landmark in the days to come!