Mostrando postagens com marcador Arquitetura. Mostrar todas as postagens
Mostrando postagens com marcador Arquitetura. Mostrar todas as postagens

6 de maio de 2008

Eco House URCA - RJ

In the Urca neighborhood near the base of Rio de Janeiro’s Sugarloaf mountain, architect Alexandra Lichtenberg tackled a remodeling project that demonstrates that being green isn't the exclusive domain of high-cost, luxury residences and backwoods off-grid dwellings. A good green remodel is within reach of the average well-intentioned homeowner in the average urban neighborhood anywhere in the world, and the EcoHouse proves it.

before the project

after the project


Green roofs and facades
Green roofs enhance passive cooling capacities, absorb rainwater, and offer another usable outdoor space for residents—a perfect spot for cultivating a garden. The EcoHouse's old ceramic tile roof was replaced by green roofs, using mostly grass and cooking herbs. All northwest-facing façades were fitted with an aluminum trellis to protect the outside walls from sun exposure. A vigorous vine will climb the trellis and create a shield to absorb most of the direct radiation that would hit the walls.


Sewage recycling
Even the most hardcore environmentalists sometimes shy away from dealing with gray water and sewage. However, there are a number of well-designed compact sewage treatment systems that make residential water reuse easy and clean. A Brazilian company called Mizumo provided a test system for the Ecohouse Urca Project. Intended for small urban lots, it measures 1.20m x 2.60m x 2.10m. The system is meant to provide water for the same non-potable uses as the rainwater system. Before being pumped to the water tank on the green roof, the water undergoes sand and UV light filtration to eliminate any remaining impurities.


Sistema de captação e fluxo de água

Natural ventilation
Natural ventilation is another component that is often best installed during the initial building process of the home, when operable skylights and windows can be designed into the building. For the EcoHouse remodel, the architect did a reconfiguration of the internal layout to allow for natural ventilation. Air circulation is vitally important, not only to reduce heating and cooling costs, but for the health of the inhabitants. Keeping a good inflow of fresh air enhances the interior atmosphere so that it never feels stuffy or stagnant.



Ventilação nas paredes com jardins verticais

Renewable energy
Two solar systems heat all the hot water in the house, both working in a passive thermosiphon system, which takes advantage of gravity and eliminates the need to pump liquids around the house. Normally, solar panels mounted on the roof heat water in a tank several floors below, which means that the liquid needs to be pumped to the roof for heating. In a thermosiphon system, the tank is on the roof, placed above the solar collector.

As the temperature of the heat-transfer fluid increases, its density decreases. The fluid rises, causing natural convection, which permits passive circulation in the pipes. In the EcoHouse, one of the two solar systems has an electrical backup source. The other functions completely on solar.


Passive Cooling
The best means of achieving passive heating and cooling is through well-planned orientation of a house on its site. With existing buildings, though, there are other ways to make use of passive technologies, such as strategic placement of shade trees, extension of eaves and overhanging roofing, and window glazing. Keeping the walls, windows and roof of the house cool by deflecting or avoiding direct sunlight, the inside stays cooler, as well, without A/C or other high-energy systems.

Fonte: Inhabitat
Apresentação da casa em português no site oficial da Eco House Urca.


More about Green Roofs:

26 de abril de 2008

Zaha Hadid e as críticas

Toda arte é construída por pessoas. Muitos são seguidores de tudo aquilo já observado e registrado. Outros seres humanos não, possuem um dom genial em alguma determinada área, são os mestres. É comum o Revirando a Teoria mencionar a importância e os feitos dos mestres. Entretanto, uma investigação mais cuidadosa sobre o mundo da arquitetura pode nos revelar uma faceta estranha, ou até mesmo vulgar, daqueles que constituem esse universo - os arquitetos.

Não é raro encontrar críticas ferrenhas até mesmo aos mais criativos no assunto, como a conhecida iraquiana Zaha Hadid. E olha que esse blog adora criticar tudo, mas criticar essa mulher é o mesmo que um escritor falar mal do Guimarães Rosa, ou um pintor criticar o Salvador Dali, ou um violonista criticar o Yamandú. Pegou?

Sendo assim, o
Revirando a Teoria resolveu postar mais três projetos recentes da mulher. Em suma, "See for yourself!!"

1) Performing Arts Centre in Abu Dhabi

The Performing Arts Center will be part of a multi-billion dollar cultural district with other buildings by Frank Gehry, Jean Nouvel, and Tadao Ando. In her own words, Zaha Hadid describes the structure as a “biological analogy” whose primary components (branches, stems, fruits, and leaves) are then “transformed from these abstract diagrams into architectonic design.” We can only hope that such poetic biomimicry will be translated into green functions, materials, and technologies as well.



2) Guggenheim Hermitage Museum in Vilnius, Lithuania

The museums sculptural volume is designed along Zaha Hadid’s characteristic conceptual terms of fluidity, velocity and lightness. The building appears like a mystical object floating above the extensive artificial landscape strip, seemingly defying gravity by exposing dramatic undercuts towards the surrounding entrance plazas. Large activated green fields flow around the museums sculptural mass, underlining its enigmatic presence with curvilinear lines echoing the elongated contours of the building. Contrasting with the vertical business district skyline it is a manifestation of Vilnius’ new cultural significance.

A glossy metallic building envelope registers the underlying main programmatic units which are articulated as inlays within the compact overall form. The sub volumes are expressed through folds and protrusions in the facades modulation, creating multiple ways of reading the building as a whole that is constituted by its integral parts. These parts reflect the various institutions and bodies that are combined within the museum, such as the Hermitage, the Guggenheim as well as the city of Vilnius. In the interior a canyon like air space allows for architecturally refined communication and circulation spaces mirroring the Fluxus spirit of informality and vivacity surrounding art.


Video do Guggenheim Hermitage Museum na Lituânia:


3) Civil Court in Madrid

The building will become a significant focal point in the masterplan for the city’s Campus de la Justicia area. It is of course the intelligent façade that caught our eye with this design. Made of metallic panels, this double-ventilated envelope is a dynamic, moving component that will respond to the environment by opening and closing. We only have an abstract understanding based on the architect’s website, but it sounds like heating, cooling and ventilation will all be moderated and control through this intelligent façade. On the roof, these metal panels will include integrate photovoltaic cells.

The proposed 74,500 square meter (~800,000 square foot) building features a spiraling semi-circular atrium that overlooks an interior public courtyard. This space is meant to draw visitors and connect the building with the surrounding campus. The atrium also brings natural light down through the building and into court rooms.

The project is slated for completion within two years and, as with all of Hadid's extreme design, we definitely plan to follow the progress and check it out in its final form. Always interesting and thought provoking (both good and bad), there is something about the work of this architect that just keeps her in our sights. It will be interesting to see if her latest design for Madrid takes shape with sustainability in mind.


Video do projeto da Corte Civil de Madrid:

24 de abril de 2008

The Temple of Vedic Planetarium, India

The Temple of Vedic Planetarium, Mayapur, India
…to be the World’s tallest Hindu temple.

The focal point of Indian architecture, like its culture, has always been religious in nature. Just as the Indian economic boom is bringing incredible economic and architectural growth in the secular area, so has Indian religious architecture started once again creating some of the worlds largest, massive, and most intricate religious architecture in world.

Now, plans are underway in Mayapur, West Bengal, located on the banks of the River Ganga near Navadvip, about 130 km north of Kolkata, to build another massive religious work: the tallest Hindu temple in the world, one of the largest religious buildings ever constructed (the largest being the Ankgor Wat Hindu temple in Cambodia), and one of the largest religious complexes to be built in last 200 years. A temple that, at 35 storeys, and will be just shy of the Pyramids in Giza in height, and without major repair is built to last over a thousand years –the Sri Mayapur Vedic Planetarium and Temple.

the temple includes a Planetarium and learning center, and is to be surrounded by a large Vedic Village, a Village Industrial Park, hotels and accomodations, and will house a large Vedic university, the Mayapur Centre of Gaudiya Vaishnavism.

Completion of the project would lead to several things, including spin-off benefits for the local economy, improvement in healthcare and education facilities, availability of micro credit to the people. The idea is to ensure that tourist arrivals in Mayapur goes up by “1,000 per cent by 2020″. With proper infrastructure in place, Mayapur could figure among the top-20 tourist destinations in India.

Material Construction of the Temple:

No steel /will be used in the building of the Temple. The entire structure will be built with bricks fired from Ganga silt. An ancient Bengali palace near Mayapur, built essentially this same way, still stands after nine hundred years without modern technology or restoration. Hence, the brickwork is a viable lasting solution.

The Temple will be built five meters above the highest recorded flood level of the Ganges. The entire structure rests atop a poured concrete slab 2.5 meters thick covering roughly four acres. This slab will act as a raft to literally float the building on the muddy Gangetic delta which makes up Mayapur.




The First Concept:
The Sri Mayapur Vedic Temple and Planetarium is planned to be one of the most striking examples of Vaishnavite architecture, hence it draws heavily from the architecture of Vaishnavite tradition. In the ten or so years, it has undergone a design evolution that is a fascinating story itself.

The Vedic Temple design was created to evoke Vedic architecture, the miniature of the cosmos, and be true to the exceptionally large, intracate and ornimentally detailed architecture depicted in art and scripture. The first design of this Temple was to emulate the architecture of Ayodhya, which was the capital city of Ram. The architecture of Ayodhya has been depicted as reflecting the Himalaya mountains in both color (white marble) and its massive, lofty spires.

Design and architecture of the Mandir

The temple is a modern interpretation of ancient Nagara (Northern) and Kalinga (Orissan) Hindu temple design. It has a consists of three connected domed structures.
The first, the Exhibition Hall, will include many exhibits, a large planetarium, and a Garuda stambha (a column supporting the carved image of Garuda.) The smallest of the three structures, the Exhibition Hall will be about nine stories high. Construction for the Exhibition hall has already begun.
The second building, the Kirtana Hall, will be approximately eighteen stories tall and features an enormous vyasana for Sri Prabhupada at its center.
The third structure, the Shikar, or main temple, will stand about thirty-five stories tall. This building will house a magnificent Deity chamber and a beautiful glass and marble gopuram.

After much debating, the Temple was once again redesigned to reflect the ancient city of Dvaraka, Krishna’s capital city, which according to legend was so diverse and beautiful in its architecture that it was said to have inspired the various temple traditions of India.

Also added to this design was the conception of the Vedic Village that would surround the Temple, where traditional craft and industry would be promoted, allowing villagers in one of the poorest parts of India educational, economic and cultural opportunities, as well as the concept of using this tributary of the Ganga River as it has traditionally been, a highway used to ferry pilgrims back and forth from the various pilgrimage sites that dot its banks. Hence a harbor and related facilities also was incorporated into the plan.




The fourth and final design change came about around 2000. As the project really started to pick up steam, and as project objectives were better realized, the Temple underwent a radical (especially for temples) design change.

It was to not only be grounded in the traditional architecture of Gura Desham, but it was to be an modern elaboaration on this style that would eschew any architectural norms and notions of beauty proffed by Western, Islamic and Buddhist styles, and would instead attempt to make a futuristic style of Hindu Bengali temple architecture.

This goal of modernizing Bengali architecture is not the first time ISKCON has attempted to revolutionize modern Temple architecture. They are indeed very good at thinking out of the box when it comes to futurizing ancient styles. The Sri Sri Radha Krishna Temple in Bengaluru (Bangalore), Karnataka state is a recently completed temple that is a modern take on traditional Dravidian architecture, incorporating both ancient and modern design and materials.



Temple of the Vedic Planetarium and Vedic Village

The Vedic Temple is just the crowning glory of the project, which also includes the establishment of the Vedic Village. The village is to be designed in three phases, phase one which will be developed concurrent to temple construction.

There are two major roads in the Vedic Village, Chaitanya Avenue, which leads to the main entrance, and Prabhupada Avenue, behind the temple which will lead to the Vedic University and Prabhupada’s Samadhi Mandir. Both roads and the village itself will be extensively landscaped. The village will see extensive dyking and drainage systems carefully integrated into the master plan. This area of Bengal is among the wettest spots on Earth, and has historically been prone to flooding.

An earthen dyke around the perimeter of the property, which will protect the whole township from floods. It will appear as a raised grassy area, reinforced on the outer side with rocks. A strengthened retaining wall on the Ganga side of the property will for flood protection, so that existing buildings can be retained intact.

Heavenly Harmonies
Any temple or sacred structure is traditionally considered as a bridge between heaven and earth. A formula that links the two is found in number, geometry and harmony which is encoded in the cosmology of the fixed stars and the moving planets. The Vedic Temple, like most Indian temples, incorporates this.

Pole Star Alignment

An example of the Temple as a planetarium is its alignment with the Pole Star. The Pole Star is the only stationary point in the sky, and everything else revolves around it, both day and night. The Pole Star sits at 23.5 degrees above the horizon, due North of the Temple. The Temple is designed so that when one stands at the South entrance and visually lines up the top of the gateway with the top of the kailasa upon the central sikhara, one will locate the Pole Star.

Spring and Autumn Equinoxes

March 21 and September 21 are known as the Spring Equinox and the Autumn Equinox respectively. They are singularly important days in the year since the Sun rises exactly opposite the East everywhere on Earth and sets exactly in the West. Also, everywhere on Earth experiences 12 hours of day and 12 hours of night, thus the equinoxes are days of perfect balance and harmony.

The alignment of the Temple to the four directions means that its relationship with the Sun will be strengthened on these two days each year, with the Sunrise occurring directly through the East Gate, falling at the feet of Sri Sri Radha Madhava sanctum sanctorum.

Size of the Mandir

The size that the temple will be is simply immense. A lot of the renderings don’t do justice to the scale of the project. Some comparisons with other major religious landmarks of the world:

Taj Mahal, India (17th Century):

St. Pauls Cathedral, London (16th Century):

St. Peters, Rome (16th Century):

The Great Pyramid of Giza, Egypt (2400B.C.)


The Project is to be completed by 2010-15 timeframe. Preliminary groundwork has begun.

Fonte: Indian Skyscrapers Blog
Veja a matéria completa pelo link.