From the Blog

Green roof fad comes to town

by HELEN YOUNG, The Australian, August, 18, 2012

The Small House in Sydeny's Surry Hills. Photo: Trevor Mein Source: Supplied via The Australian

The Small House in Sydeny’s Surry Hills
Photo: Trevor Mein
Source: Supplied via The Australian

Imagine flying over a city where the rooftops below are living green, where plants and even vegetable gardens transform the lost spaces on top of buildings. It’s already happening around the world, and Australia is embracing the trend.

In Sydney’s Pyrmont, we’re standing on the rooftop of a heritage-listed building, surrounded by a vast garden sitting in the sky. M Central is an apartment block whose 2005 resurrection as a hip inner-city residence came a century after its construction as a wool store. Landscape architect Daniel Baffsky of 360 Degrees, who designed the 3000sq m communal garden, says the brief was to surprise rather than “have the ubiquitous pool and huge deck”.

Swaths of native foxtail grass lend an almost rural ambience at one end, their furry plumes swaying with the breeze. Bold succulents give textural contrast, while the centrepiece of a small lawn is a magnificent dragon’s blood tree. On the upper level, vine-covered arbours and wide timber boardwalks, shaded by tall tuckeroo trees, flank a covered events area. The sound of water tinkles gently.

The garden is beautiful, but also a social hub for M Central’s 400 residents, offering opportunities for interaction, from barbecues to dog walking.

“There’s no question about the environmental benefits of green roofs but the social benefits are not yet fully explored. Up on the roof everyone is equal,” Baffsky says.

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The Empire State Building gets a huge green roof!

by BETH BUCZYNSKI, EarthTechling, October 1st, 2013

Green roof on the 21st floor
Photo: Xero Flor
Source: www.earthtechling.com

The Empire State Building, an architectural icon in New York City and beyond, just took a giant step forward in its quest to reduce energy consumption. The ‘World’s Most Famous Office Building’ now boasts four green roof systems, totally nearly 10,000 square feet.

For its green roof upgrade, the Empire State Building chose to install the Xero Flor Green Roof System for four rooftop areas: 21st floor east (3,450 square feet), 21st floor west (3,450 square feet), 25th floor northwest (1,000 square feet) and 30th floor west (1,200 square feet). The green roofs on the 21st floor feature rooftop patios with outdoor furniture for the enjoyment of office tenants.

As we’ve reported in the past, the Empire State Building is on a quest to become the most sustainable office building in America. In 2011, the building’s owners announced that they would purchase 100 percent of its power from renewable sources and then embarked on a massive retrofit plan that would earn the Empire State Building LEED Gold.

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Des étages en plus pour créer des logements

par TANCREDE BONORA, Slate.fr, 3 février 2012

Surélévation d'immeubles Image: Michel Cantal-Dupart Source: www.slate.fr

Surélévation d’immeubles
Image: Michel Cantal-Dupart
Source: www.slate.fr

Paris ne peut pas s’étendre indéfiniment, il doit se réinventer à l’intérieur de ses propres limites. Et si la solution se trouvait sur les toits?

Il faut débloquer le foncier», a asséné Nathalie Kosciusko-Morizet, ministre de l’Ecologie et du Logement, jeudi 2 février, sur les ondes de France Inter, après avoir commenté la mesure annoncée dimanche par Nicolas Sarkozy d’augmenter de 30% le coefficient d’occupation des sols (COS); selon elle, avec cette décision «la constructibilité augmente partout [y compris] les limites de hauteur, les limites de gabarit. (…) Ce n’est pas de l’étalement urbain, c’est tout le contraire».

Avec une des densités les plus élevées au monde (près de 22.000 hab/km contre seulement 13.500 pour Tokyo et près de 11.000 pour New York), Paris suffoque, ceinturé par un périphérique et un habitat de banlieue qui n’attire pas les jeunes urbains.

On crée pour l’instant 40.000 logements par an à Paris et le programme du Grand Paris projette d’en construire 70.000.

L’extension horizontale de la ville n’est plus une solution viable. Mais comment absorber la population parisienne de plus de 2.200.000 habitants tout en préservant la qualité de vie? Comment faire face à la pénurie des sols?

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‘Innovative’ housing with rooftop farms set for southside

by EMILIE RAGUSO, Berkeleyside, October 17, 2013

A photo simulation of what the project’s rooftop farms could look like Image: Stanley Saitowitz / Natoma Architects Source: www.berkeleyside.com

A photo simulation of what the project’s rooftop farms could look like
Image: Stanley Saitowitz / Natoma Architects
Source: www.berkeleyside.com

City zoning board members approved a 77-unit mixed-use housing development near downtown Berkeley late last week, expressing excitement about a “unique” design set to include more than a dozen working rooftop farm plots and a novel approach to parking.

“Garden Village,” at 2201 Dwight Way at Fulton Street, brings with it a number of innovative features, from its composition — it’s made up of 18 distinct but connected “volumes,” or towers, that range in height from 3 to 5 stories and are connected by open-air walkways; its more than 12,000 square feet of rooftop farming plots; and its small garage, which offers just enough space for a fleet of shared vehicles that will be rentable by tenants.

Without the car-sharing idea, the project would have required room for 71 vehicles. Instead, Berkeley-based developer Nautilus Group decided it would purchase a fleet of four to 10 automobiles and contract with a car-sharing operator called Getaround to run the “car-share pod” operation. (The city required Nautilus to pay for a parking demand study to bolster the justification for that approach.)

Zoning board Commissioner Shoshana O’Keefe described the concept as potentially “genius,” adding that the notion of projects that fold effective car-sharing programs into their plans “might be the magic solution” to the hairy issue of meeting parking demand efficiently in a densely-populated community.

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Repairs begin on 32 schools in TDSB solar rooftop plan

by CBS News, September 19, 2013

A plan to install solar panels on the rooftops of Toronto schools will get underway this fall, as crews begin repairs on 32 buildings across the city.

The Toronto District School Board is working in partnership with energy firm Potentia Solar Inc. to install solar panels on 311 school rooftops over the next three years.

Once installed, the panels will generate enough energy to power 4,500 homes each year. Revenue generated from the project will be used to fund much-needed repairs and replacement on school rooftops across the city.

“We’re very proud that our students will be part of the conversation in terms of environmental education, part of the conversation to see how the roofs will be impacted,” said Donna Quan, director of education at the TDSB.

The plan was first announced in 2011. Most of the project costs will come from private solar energy companies with some provincial funding.

It’s one of the largest capital projects of any school board in North America, and the largest in Canada.

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Nantes accueille le gotha mondial de la végétalisation des bâtiments

par JEAN-PHILIPPE DEFAWE, LeMoniteur.fr, 5 septembre 2013

Après Toronto, Mexico et avant Sydney en 2014, le Congrès mondial de la végétalisation du bâtiment (World Green Infrastructure Congress) se tiendra du 9 au 13 septembre à Nantes, capitale verte de l’Europe.

Avec quelque 1,5 millions de m2 de surfaces végétalisées, la France est le second marché mondial. Il était donc logique que ce congrès, où sont attendus quelques 600 experts du monde entier, se tienne en France. Logique encore que la ville d’accueil soit Nantes, première ville française élue « capitale verte de l’Europe » par la Commission européenne. « Par ailleurs, à Nantes, nous sommes sur un terreau propice à la vegétalisation des bâtiments avec, sur le territoire, le pôle de compétitivité du végétal, Vegépolys, et le cluster de l’éco-construction, Novabuild » justifie François Lassalle, directeur R&D de Sopranature (Soprema) et président de l’Association des toitures et des façades végétales (Adivet), organisateur du congrès.

Marché porteur mais à encadrer

Dans un marché du bâtiment plutôt morose, la végétalisation représente une niche porteuse même si, selon François Lassalle, « le rythme n’est plus aussi soutenu depuis deux-trois ans ». Comme tout marché nouveau, il est encore à encadrer. « Historiquement, les étancheurs sont présents sur ce marché et ils sont rejoints par les entreprises du paysage. Ce croisement entre bâtiment et végétal nécessite le respect d’une réglementation spécifique. Aujourd’hui, il existe des Règles professionnelles conjointes qui doivent être appliquées par tous les acteurs » précise François Lassalle.

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