Rebuilding Nepal with traditional techniques

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Traditional house in Nepal's Central Hills
Traditional house in Nepal's Central Hills. Credit: ABARI

In Dolakha, a Thangmi woman rises early in the morning to mix together a paste of manure and clay. She kneels down on the floor of her broken home and smooths the mixture over the careworn earthen floor in preparation for another day of living in the earthquake’s aftermath. Over the mountains in Sindhupalchowk, a Tamang carpenter has fashioned a sturdy lodge from the stone rubble of his former home.

Serving his guests cups of strong sugary tea, he looks out the carved wooden windows he has built to the terraced fields he can no longer farm. Across the landscape devastated by the earthquake, Nepalis are creating shelters incorporating the architectural and design principles of familiar structures. The vernacular architecture of Nepal’s Central Hills is well adapted to the environment, and to the rhythms of agrarian routines.

An ideal Hill home is one with thick stonewalls, a ground floor kitchen, upper story bedrooms, an attic storage room, a spacious courtyard, veranda, and cozy and clean sheds for livestock.

The design is holistic—suited to the everyday needs of farmers. But, as aftershocks continue to shake Nepal, confidence in traditional building materials—stone, wood, bamboo, earth—and vernacular architecture is eroding due to opinions that identify the architecture of Nepal’s Hills as a reason for the massive loss of life and property following the April 25th earthquake.     

Before homes in the Hills are replaced by pre-fabricated housing or one-story concrete bunkers in the name of “building back better,” we should consider whether the weakness in the structures which fell during earthquakes and aftershocks is due to design and materials or to the techniques used to build them?

 

ABARI’s portable bamboo treatment technology
ABARI’s portable bamboo treatment technology. Credit: ABARI

 

And if so, how techniques can be improved to recreate familiar village-scapes in earthquake-affected areas? Some solutions are held in the local knowledge of carpenters and masons. Prior to wood becoming a scarce commodity in the Hills during the 1970s and 1980s, homes were constructed with alternating layers of stone blocks and wooden beams joined together at the corners to create a “box effect.” The seamless construction allowed for the structure to move as a single entity, a “box,” strengthening the structure and enabling it to withstand the motions of earthquakes.

As the types of wood preferred in home construction became expensive and less available, the wooden bands framing the home (in Nepali, the nas or nerves of the structure) were abandoned. The practice of sur milaune, of making a rhythm for the home through the construction of cornerstones, has also been increasingly left behind in recent construction along with concept of chukul or stitching walls with the wooden bands.

​These techniques, once indispensible to Nepal’s vernacular architecture and which make the buildings earthquake resistant, are known to carpenters and masons in the Hills and can be revived as favored building practices in the reconstruction of homes and villages. 

In last 40 years, due to professional, academic and government neglect, Nepal vernacular architectural traditional was not able to move to modern era.
 
Bamboo roof in modern house in Kathmandu
Bamboo roof in modern house in Kathmandu. Credit: ABARI

In order to fill this gap, 8 years ago we established an organization called ABARI in order to celebrate and promote the indigenous architectural knowledge.  We believe that combining traditional knowledge with modern science, they could make small changes that could have a significant social and environmental impact. For example, we remember the joy in Ful Maya Thami’s face, when we taught her that by adding milk protein and linseed oil on her plaster it became maintenance free. She is now teaching everyone in her community the recipe so they don’t have to spend all morning replastering her mud floor. She recalled “All my life I grew up drinking milk, I did not know by adding simple things like lime to it, we could make our floor shiny and maintenance free.”

Similarly given the high cost of wood, we taught people how to treat bamboo so they can use it for beams and rafter. The treatment system has now become so streamlined that the Government of Bhutan has installed them in community forests across the country.

Small interventions like treating bamboo or adding natural additives to the clay can have significant social and environmental impacts. Bamboo roof or earthen walls, which was only reserved for making cow sheds or rural homes are now being used in high-end hotels and spas.

Nepal has enough local knowledge and technologies to construct homes suited to their livelihoods and appropriate to an earthquake-prone environment. The earthquake can be a great opportunity to enhance skills of the people, so they can build their own homes that are not only hazard resistant but also more comfortable and suited to contemporary context.  
 
Stone and Bamboo School built by Abari and Learning Planet that survived the earthquake in Gorkha
Stone and Bamboo School built by Abari and Learning Planet that survived the earthquake in Gorkha.
Credit: ABARI

Join the Conversation

Ekta
November 03, 2015

Great work. How can we contact the group for consultation? My home is at Sindhupalchowk. All houses over there have collapsed and needs reconstruction.

sjoerd nienhuys
November 05, 2015

I agree with the general idea, and proposed the same during a recent earthquake recovery mission in Nepal, based on my experiences in Ecuador, Peru, Colombia, Mozambique and Indonesia. However, during discussions with the villagers there was stiff opposition, although they were using the bambu for their cattle sheds, which did not collapse, and they used the bambu for their temporary emergency shelters. An identified problem is the image of the meterial and lack of conservation techniques. Also better bambu varieties may be imported and planted that are more insect resistant. One of the proposals was to construct good looking sample buildings in selected villages and train local carpenters in the construction techniques.
What is important is to minimize the adobe and stone content because these materials are to heavy, and to create better thermal insulation methods with bambu and timber constructions. In addition bambu by itself is only useful when applied is a correct way. Like with reinforced concrte the carpenter must know where it has the most effect on strengthening the building.

anirban choudhury
November 03, 2015

an inspiring work and philosophy behind it.

Rajendra Kumar Joshi
December 06, 2015

For roofing bamboo seems quite cost effective, but needs mass production treatment technique and facilities locally. In most of the earthquake affected remote area,easily available common building materials are irregular shaped stone and untreated softwood. For stable wall construction stone need to be cut to make rectangular shape, which is costly. Building materials need to inexpensive.

Dr Pranil Upadhayaya
December 10, 2015

It is inspiring to be updated with the endeavor to harmonize the local resources (e.g. bamboo) based indigenous technology with ‘building back better’ in post-earthquake period. My best wishes to Nripal Adhikary and Abary Team to keep it up...

Dr Pranil Upadhayaya
December 10, 2015

It is inspiring to be updated with the endeavour to harmonize the local resources (e.g. bamboo) based indigenous technology with ‘building back better’ in post-earthquake period. My best wishes to Nripal Adhikary and Abary Team to keep it up...