Moveable House

The team of the Auroville Earth Institute, along with volunteers aging from 11 years to 60 years old and from 10 to 12 countries, built in Auroville the caretaker’s house of the Realization project in 8 days, from the 28th January to 5th February 2008. The house was precast in the Auroville Earth Institute premises in about 3-4 weeks:
-    Compressed stabilised earth blocks (CSEB) of the house were done by volunteers of the Realization project in October / November 2007.
-    Precasting was done by 3-4 paid masons and a few workers from the Auroville Earth Institute in December / January 2007.

Moveable house built in 64 hours at Auroville
All materials were transported to the site in 3 days and the house was assembled in about 64 hours by a daily team of 16 paid workers and 10 to 15 volunteers aging from 11 to 60 years old. This house of 30 m2 (built up area) cost about 210,000 Rs. (5,000 USD) including a solar system, water supply, wastewater system and all finishes.

Auroville has today a deficit of about 150 houses and there is a need to build fast and economically for people. This house was an attempt to solve this housing shortage. The master plan of Auroville is not yet studied in details and the urban design is going on. Therefore permissions to build are not given easily and this delays the process of building houses and apartments.

This house has been conceived as moveable but built with durable materials. It can be dismantled with a minimum loss of materials, transported anywhere and rebuild as such or materials could be reused for another purpose. This was an answer of the Auroville Earth Institute to build quickly in zones where intermediate development could happen and later on to free the zone for final development without loss of assets.

The entire house has been precast, including all bathrooms and sewage items. A huge construction game was created, a kind of Lego which could be assembled by semi skilled people. Walls were made of dry hollow interlocking blocks 300, produced by the Auram Press 3000. This block is especially meant for earthquake resistance and it is dry stacked. Earthquake resistance requires grouting cement concrete into the holes of the blocks every 4 courses and it requires also reinforcement with steel bars at various locations, vertically and horizontally. But this house being moveable, no cement mortar or cement concrete has been used to assemble the house. Only earth mortars and earth concretes without cement were used to bind and grout the hollow interlocking CSEB. Instead of steel bars for the reinforcements, wooden members were used. This dry hollow interlocking block 300 was chosen because it is dry stacked and can be laid by semi skilled labour. The roof was done with a new type of ferrocement channels which had a U shape and which were covered with other ferrocement panels, so as to create a hollow cavity which was ventilated at both ends.

 FOUNDATIONS   Not dug but done with precast composite beams (U shape CSEB and reinforced concrete) laid with earth mortar
 WALLS   Dry interlocking CSEB 300 with 5 % cement, grouted with earth concrete (without cement)
 WALL REINFORCEMENTS   Pakamaran wood split (Local wood in Tamil Nadu similar to Palmyra tree)
 COLUMN   Round block 290 laid with earth glue and reinforced with GI pipes, which were screwed at the top
 BEAMS   Composite beams and lintels (U shape CSEB and reinforced concrete)
 ROOF STRUCTURE   U shape ferrocement channels of 6 m long
 ROOF COVER   Ferrocement panels, 2.5 cm thick to cover the ferrocement channels and create a ventilated cavity
 BATHROOM ITEMS   Toilet floor, shower pan and partition panel were precast with ferrocement
  Baffle reactor with 3 chambers and planted filter and polishing pond

The Realization project aims to build sustainable and affordable homes for Auroville with people’s participation. It wants to contribute actively to the building of Auroville as a conscious community and as a city of never ending education. The Realization project proposes one solution to answer the present housing crisis in Auroville. The construction of the caretaker’s house was the first step of the Realization project and the first phase starting in the next weeks will be the construction of 17 apartments for about twenty five people. The future phase of the Realization project will see the development of about 60 more apartments for about 170 people over a period of 3 to 5 years.

Moveable house built in 64 hours at Auroville
After 8 h - Levelling the ground and ramming for the foundations
After 15 h - Laying the second course of composite beams
After 18 h - Walls going on at the sill level
After 24 h - Walls going at the window level
After 28 h - Fixing the shower pan
After 30 h - Fixing the toilet floor
After 34 h - Fixing the toilet pan
After 32 h - Laying the composite lintel
After 36 h - Laying the composite beam of the veranda
After 37 h - Composite beam of the veranda
After 50 h - Lifting the ferrocement channels
After 55 h - Ferrocement channels laid
After 57 h - Laying ferrocement panels for the ventilated cavity
After 58 h - Ferrocement panels laid
After 60 h - Laying the precast pieces for the sewage system
After 62 h - Sewage system completed
After 61 h - Finishes inside with painting and flooring
After 64 h - House built with a team of about 30 people
Concept plans
Roof details
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