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  • Written by Davina Jackson, Honorary Academic, School of Architecture, University of Kent

Bali’s Green School recently celebrated its first decade of educating toddlers through teenagers (and their digital nomad parents) about eco-ethical design and cooperative living. Set in a village near Ubud, this tropical jungle campus of quirky bamboo pavilions has become a globally influential exhibition of one of this century’s significant architectural trends.

There is a major renaissance in correctly growing, cutting, treating, drying and laminating bamboo so it can be used with confidence for substantial and near-permanent structures. Much of the inspiration for this has come from Green School founders John and Cynthia Hardy and their daughter Elora. Their TED talks and YouTube videos have been widely watched.

John Hardy talks about his Green School dream.

Read more: Bamboo could turn the world's construction trade on its head

Bamboo always has been a basic construction material in tropical latitudes. But generally it has been used for inexpensive shacks, stalls, fences, scaffolding and sunscreens. If not treated, bamboo is highly susceptible to fire and naturally degrades within two or three years, because insects and fungi rapidly devour the sugar-and-starch-rich sap inside the canes.

In Bali during the 1990s, Irish-Australian designer Linda Garland pioneered contemporary uses of bamboo. She worked with University of Hamburg scientist Walter Liese to treat bamboo against the ravages of powderpost beetles and turn it into a commercially viable building material.

One essential preparation technique is to drill through the centres of the canes with long steel rods, then apply repellent and fire-resistant chemicals. Often this involves a soaking solution that includes borax salt powder. The bamboo is then dried out for several days to weeks.

Bamboo architecture: Bali's Green School inspires a global renaissance Once the problems of fire and pests are solved, bamboo becomes a durable and versatile construction material. Courtesy of Green School Bali, Author provided

Technology helps transform practices

Ancient practices in China and Japan remain the gold standard for durable bamboo buildings.

Traditional Japanese rectilinear designs had gable roofs and rooms matching the dimensions of tatami mats.

Some Chinese bridges date back as far as the 10th century AD. Floating villages (bamboo platforms with clusters of huts) supported dozens of families as recently as the 17th century.

Bamboo architecture: Bali's Green School inspires a global renaissance The bamboo bridge at the Green School has an ancient inspiration. Davina Jackson, Author provided

In Ecuador, archaeologists found a bamboo funeral chamber carbon-dated to 7500 BC. Ecuadorian bamboo, known as caña de Guayaquil (or Guaya), is exported to Peru, Colombia and other Latin American countries. Here bamboo buildings tend to be weatherproofed by thick coatings of mud. (David Witte has written a thesis on historical and contemporary bamboo buildings in South America.)

Today, Bali’s Green School and several associated enterprises, are prominent in a third millennium movement to build geometrically irregular, often sinuous, structures.

Bamboo architecture: Bali's Green School inspires a global renaissance The irregular, sinuous structures of the Green School seen from above. John Singleton, courtesy of Green School Bali, Author provided (No reuse)

These outré styles obviously have been influenced by the trans-millennial technology revolution in digital modelling and manufacturing. Extremely asymmetrical architecture can now be fabricated precisely with metal, glass and masonry components.

However, the Hardys and their international team of bamboo building experts craft small-scale physical models of their designs. The artisans then copy these models on site at full scale. This manual system need not stop designers from sketching initial concepts on their screens.

Elora Hardy talks about the potential of bamboo, as both a sustainable resource and inspiration for innovative buildings.

Read more: Cheap, tough and green: why aren't more buildings made of rammed earth?

What happens at the school?

The Green School educates more than 500 students from pre-kindergarten to Year 12. It complements standard curriculum subjects with various practical tasks and projects that build healthy and ecological skills and habits. Teachers, and parents co-opted as project leaders and mentors, encourage pupils to design and build specific structures that provide useful amenities for the campus.

Bamboo architecture: Bali's Green School inspires a global renaissance Bamboo is used throughout the school. Davina Jackson, Author provided

One recent middle-school project produced a series of tiny shelters as quiet retreats. Each one is to be occupied by only one child at a time. A campus guide notes that Sir Richard Branson recently climbed into one of these cubby houses, a tiny netted bamboo platform hanging from a tree branch, without upsetting the apparently fragile enclosure.

Elora Hardy’s team at architecture, interior and landscape design company Ibuku designed and made most of the school’s buildings. They also have created yoga and cooking school pavilions, hotels, houses, restaurant interiors and permaculture gardens around Bali and in some Asian cities.

Bamboo architecture: Bali's Green School inspires a global renaissance Elora Hardy’s team designed and made most of the school’s buildings. Davina Jackson, Author provided Bamboo architecture: Bali's Green School inspires a global renaissance Students make biosoap in the Kul Kul Connection program. Courtesy of Green School Bali, Author provided

An affiliated venture also operates Green Camp residential courses for children and their parents visiting for one to 11 days. Their meals are cooked with vegetables grown at the Hardys’ Kul Kul permaculture farm.

Another family venture, Bamboo U, led by Orin Hardy, provides hands-on training for potential builders. The courses cover bamboo selection (different uses of seven preferred Balinese species), treatment, building design, modelling and on-site fabrication, including professionals from Ibuku as teachers.

A global embracing of bamboo

During the Green School’s first decade, a new generation of studios led by young Asian architects gained prominence and international awards for their creativity with bamboo. They include: Vo Trong Nghia (VTNA) and H&P Architects in Vietnam; Nattapon Klinsuwan (NKWD), Chiangmai Life Architects and Bambooroo in Thailand; Abin Design Studio and Mansaram Architects in India; Bambu Art in Bali; Atelier Sacha Cotture in the Philippines; HWCD, Penda (Chris Precht) and Li Xiaodong in China; and William Lim (CL3) in Hong Kong.

And some long-established, internationally renowned architecture firms have completed projects with significant uses of bamboo. They include Japanese architects Kengo Kuma, Arata Isozaki and Shigeru Ban, London-based Foster + Partners and Italy’s Renzo Piano.

Bamboo architecture: Bali's Green School inspires a global renaissance Bamboo inspires its own architectural forms. Courtesy of Green School Bali, Author provided

Read more: Surviving climate change means transforming both economics and design

Many bamboo buildings today include timber or concrete slab floors because these can be laid consistently flat. But researchers at Empa, the Swiss materials research academy, have developed highly durable and temperature-inert floor and deck boards made with a composite of bamboo fibres and resin. These prototype boards are being tested in one of the Vision Wood student apartment modules slotted into Empa’s NEST testing facility at Dübendorf.

Meanwhile, the Green School is expanding from Bali. An associate campus opens next year on the west coast of New Zealand’s North Island – where bamboo is not naturally grown or legally used as an architectural material. Instead the Taranaki school will build aerial classrooms – pods on poles – using various local species of pine.

Authors: Davina Jackson, Honorary Academic, School of Architecture, University of Kent

Read more http://theconversation.com/bamboo-architecture-balis-green-school-inspires-a-global-renaissance-121248

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