Strong, light and cheaper than steel poles, bamboo is ubiquitous across Asia as scaffolding.
So much so that in recognition of the material’s versatility, the Indonesian island of Bali has made it an emblem of sustainable construction, replacing buildings of concrete and steel with far greener alternatives.
An entire school, luxury villas and even a chocolate factory are the latest structures to rise from bamboo skeletons as the plant’s green credentials and strength are hailed.
The factory, which opened last year and produces organic drinking chocolate and cocoa butter, is the latest in a string of buildings on the island, including homes and businesses, to be built of bamboo.
Erected in the village of Sibang Kaja between the resort island’s smoggy capital Denpasar and the forests of Ubud, the factory is the initiative of specialty food firm Big Tree Farms, which claims the 2,550-square-meter (27,500-square-foot) facility is the biggest commercial bamboo building in the world.
“Bamboo is unmatched as a sustainable building material. What it can do is remarkable,” Big Tree Farms co-founder Ben Ripple, 37, told AFP.
“It grows far more quickly than timber and doesn’t destroy the land it’s grown on,” said Ripple, an American from Connecticut. “Our factory can be packed up and moved in days, so if we decided to shut it down one day, we’re not going to damage the rice paddies we sit on.”
The 100 hectares (247 acres) of paddies sit inside a so-called “bamboo triangle,” with the factory, school and villas standing at each of the three points.
Such ambitious bamboo projects in Bali are mostly driven by eco-conscious foreigners.
With studies showing construction to be one of the world’s least sustainable industries — eating up around half of the globe’s non-renewable resources — sustainable construction is slowly taking root around the world.
It is among the key topics for discussion at the Rio+20 United Nations Conference on Sustainable Development, which opens June 20 in Rio de Janeiro.
In Sibang, the tawny brown bamboo buildings with their grass thatched roofs appear to be rising from the earth.
The three-story chocolate factory is pieced together using a complex system of scissor trusses and bolts, thanks to clever architecture.
It resembles the traditional longhouses found on Borneo island and was made with more than 18,000 meters (59,000 feet) of bamboo from Bali and Java.
At Sibang’s nearby Green School, the 240 students — most of them children of expatriates — learn in semi-outdoor classrooms decked with bamboo furniture.
The school, which opened in 2008 and was the magnet for the other two projects, has 25 bamboo buildings, the main one being a stilt-structure constructed with 2,500 bamboo poles, or culms.
“In Hong Kong and China, they make new skyscrapers of concrete and glass using bamboo scaffolding. But here, the workmen stood on steel scaffolding to build this bamboo building. That’s always seemed funny to me,” said Green School admissions head Ben Macrory, from New York.
“In most parts of Asia, bamboo is seen as the poor man’s timber.”
Not, however, in Sibang, where the bamboo villas that nestle between the palm trees are worth $350,000 to $700,000 each.
Like decadent treehouses for adults, they have semi-outdoor areas and include innovative bamboo flooring that resembles smooth timber and jellybean-shaped coffee tables made from thin bamboo slats.
Bamboo — technically a grass — has been used in building for centuries because of its impressive strength-to-weight ratio.
Jules Janssen, an authority on bamboo in the Netherlands, says that the weight of a 5,000-kilogram (11,000-pound) elephant can be supported by a short bamboo stub with a surface area of just 10 square centimeters (1.5 square inches).
One reason bamboo is so environmentally-friendly is the speed at which it grows, according to Terry Sunderland, a scientist at the Center for International Forestry Research in Indonesia.
“In China, eucalyptus can grow at three to four meters (10-13 feet) a year, which is very impressive for timber. But building-quality bamboo will grow between six and 10 meters (20-33 feet) in that time,” he said.
And unlike trees that rarely grow back once felled, bamboo will continue to produce new shoots even after cutting.
(Excerpt of article by of The Jakarta Globe. NOT AFFILIATED WITH LAMBOO)
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