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Showing posts with label Disaster Resistance. Show all posts
Showing posts with label Disaster Resistance. Show all posts

Sunday, 29 April 2012

Gujarat Rehabilitation after the earthquake


Gujarat Rehabilitation after the earthquake

Following the massive earthquake, which devastated huge areas of Gujarat in January 2001, the Auroville Earth Institute was approached by NGOs and a GO to assist the rehabilitation work of the affected areas.
75 Auram presses 3000 with interlocking moulds have been supplied to various NGOs and Building Centres.


BUILDING A HOUSE IN 62 HOURS

Aum house under construction – Lifting channels after 44 h
In July 2001, the Auroville Earth Institute constructed a demonstration house, the Aum House, with the technology developed for earthquake resistance. This house was sponsored by Kutch Nav Nirman Abhiyan.

The house was precast at Auroville in about 3 weeks and it was transported in 3 trucks, over 2500 Km. the house was assembled in 62 hours by our 20-men team. It was the starting point of rehabilitation programmes for the zones affected by the earthquake.


TRAINING COURSE FOR HUDCO
In 2002, HUDCO (Housing and Urban Development Corporation, an Indian Government undertaking) asked for special training course of the project managers of the newly set up building centres of Gujarat. At the occasion of the six-week training course, 30 trainees precast and built a modified AUM house. The first part of the training course was for the production of blocks and the precasting of the house. A time gap of 1 month was kept for curing and the house was assembled with trainees in 13 days.

Production of blocks at Mundra

Precasting ferrocement channels

House completed in 13 days with about 30 trainees

ASSISTANCE TO THE CATHOLIC RELIEF SERVICES
The international charity organisation Catholic Relief Services (CRS) was in charge of setting up rehabilitation programmes in 39 villages of Kutch and in 2002 they asked the Auroville Earth Institute for assistance.

CRS purchased 60 Auram Presses and some of these presses were operating on a continuous double-time-shift basis. The Auroville Earth Institute assisted them regularly in their works for about 6 months:
•    Conducting several training course for block making, in Auroville and in Gujarat
•    Conducting regular evaluation missions for checking the quality of block making
•    Assistance for the design of the model houses
•    Conducting one training course for building a model house
•    Conducting regular evaluation missions to control the quality of construction
•    Reformulation of new specifications

In all 30 engineers, 13 supervisors, 46 masons were trained by the Auroville earth Institute and they were managed by the Catholic Relief Services.

Mehul Savla, an architect who had been previously trained during a year at the Auroville Earth Institute, was the Deputy Programme Manager for the construction project and he played a key role in the technical design aspects and in the implementation of the project. The team of CRS did an excellent work there and Mehul Savla had been a key person for the acceptance and the approval of the technology in Gujarat.

The rehabilitation area which was covered by CRS team was very large and the team faced a lot of problems of management, coordination and quality control. Further their work with the local authorities and the villagers was not easy. Nevertheless they managed very well this programme and the Catholic Relief Services built in a year time 2,698 houses of various types (about 28 m2 each) in 39 villages. They trained, gave a livelihood and employed about 2000 people in 39 villages. The work with CRS was the occasion to improve the strength of the Auram press 3000 and to develop our technology with hollow interlocking blocks.

Production of blocks after a training course
Training course for building a model house
Model house with ferrocement channels

Model house with Mangalore tiles with 4 sides roof

Houses at Paya Village


Model with Mangalore tiles with 2 sides roof

Model with Mangalore tiles

Community centre near Paya

Community centre


GOVERNMENT APPROVAL
The Government of Gujarat was the first one to approve our technology with hollow interlocking blocks for earthquake resistance. Mehul Savla and people from Kutch Nav Nirman Abhiyan prepared the draft of the guidelines for building with stabilised earth. The Auroville Earth Institute redrafted the rehabilitation guidelines and they were finally accepted by Prof. Arya, seismic advisor to the Government of India. The guidelines were published by the Gujarat State Disaster Management Authority (GSDMA) and the hollow interlocking block technology developed by the Auroville Earth Institute had been incorporated in the rehabilitation guidelines.
To download complete Gujarat rehabilitation after the earthquake as PDF file, Click here

Aum house



Aum house


Aum House built in 66 hours at New Delhi in 1999


House precast and built in 4 weeks by trainees, Reconstruction of Orissa after the 1999 super cyclone

The initial idea was to create a disaster resistant and cost effective house, which could be precast anywhere and transported by lorry to the place where the disaster occurred. The technical concept satisfied this requirement. The house was cost effective, even with the provision for disaster resistance, but the transportation cost was more than the house cost. Therefore, such a project was not economically viable.

The prototype of this 23m2 AUM House has been built during the India International Trade Fair 99 at New Delhi. The house was prefabricated at Auroville and transported in a single lorry. The house weighed around 22. 5 tons and the lorry took 5 days to cover 2,900 Km between Auroville, Tamil Nadu, and New Delhi.

The packing of the house was done in such a way that only 8 blocks arrived broken out of 2,280 blocks. Ferrocement pieces had only little hair cracks. The superstructure of the prototype house has been assembled in 66 hours by the 18-man team of the former AVBC/Earth Unit. This AUM House prototype was sponsored by HUDCO. The India Trade Promotion Organisation awarded this house a Gold Medal for the excellence of its special demonstration.

Second prototype, built as a demonstration in 62 hours, Khavda, Gujarat

House precast and built in 4 weeks by trainees, Reconstruction of Gujarat after the 2001 earthquake

Various Aum houses were built in the successive years in various places of India after disasters:
• 2000 at Narangarh, Orissa, at the occasion of a six-week training course, with a grant from HUDCO, for the rehabilitation of the zones affected by the cyclone of October 1999.
• 2001 at Khavda, Gujarat, in 62 hours by a 20-men team. It was the starting point of rehabilitation programmes for the zones affected by the earthquake of January 2001.
• 2002 at Mundra, Gujarat, at the occasion of a six-week training course, sponsored by HUDCO, for the rehabilitation of the zones affected by the earthquake of January 2001.


Aum House built with trainees at Narangrah, Orissa in 2000

Aum House built in 62 hours at Khavda, Gujarat in 2001

Aum House built with trainees at Mundra, Gujarat in 2002

It was possible to transport this house over such long distances only for the sake of demonstrations. Thus, the packing was done in a very special way that cannot be replicable for normal cases. Firstly, the transportation cost was prohibitive and secondly the keys of the interlocking blocks must not be damaged. Therefore, it is not advisable to transport this house over long distances. On the contrary, these blocks could be transported from village to village, but still, with a certain care, as it has been done by the Catholic Relief Services in Gujarat.

Some developments have been made from what was done in Gujarat. Three major modifications should be noted for the improvement of the design and technology:
• Increase of the front wall length, so as to get a stronger shear wall.
• Replacement of the veranda’s column by a sidewall with a corner.
• Modification of the block size and the binder: The blocks are now 295 mm long, and laid with cement sand mortar.

Development with a corner wall instead of the column


Plans of the Aum House of New Delhi

Plans of the Aum House of Narangarh, Orissa

Plans of the Aum House of Khavda, Gujarat

Plans of the Aum House of Mundra, Gujarat

Aum house at New Delhi


Loading the lorry at Auroville

Aum house built at New Delhi in 66 hours

House at New Delhi, view on the kitchen side

House at New Delhi, view on the toilet side

House at New Delhi, view on toilet and shower

House at New Delhi, view on the living room
Construction steps of the Aum house at Khavda, Gujarat
14 hours – Building the second course of the plinth
16 hours – Plinth beam completed
 
17 hours – Filling the basement and starting the walls
25 hours – Sill ring beam completed
30 hours – Building the sills and visitors from the village
35 hours- Lintel ring beam completed
43 hours – Roof ring beam completed
 
46 hours –Laying ferrocement channels
 
48 hours –Laying ferrocement channels completed and starting the finishes
Aum house completed in 62 hours by a 20-man team
Visitors visiting the house after completion
Villagers visiting the house
 
 
Modification for the new design of the Aum house
 
To download complete Aum House as PDF file, Click here