NATURADOME

  • Building Type : Isolated or semi-detached house
  • Construction Year : 2014
  • Delivery year : 2015
  • Address 1 - street : Las hounts 65220 LAPEYRE, France
  • Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.

  • Net Floor Area : 156 m2
  • Construction/refurbishment cost : 215 280 €
  • Cost/m2 : 1380 €/m2

Certifications :

  • Primary energy need :
    8 kWhep/m2.an
    (Calculation method : RT 2012 )
Energy consumption
Economical buildingBuilding
< 50A
A
51 à 90B
B
91 à 150C
C
151 à 230D
D
231 à 330E
E
331 à 450F
F
> 450G
G
Energy-intensive building

NATURADOME is a green patented bioclimatic ark for the construction of individual or collective housing, public buildings and professional high performance. Its construction process not binding on the constructive regulation, uses circular economy and ensures full integration into the environment. NATURADOME generates outstanding thermal performance (RT2012 least 53%) and the ability to create an interior space 100% customizable from 1380 € taxe inclusive / m².

Sustainable development approach of the project owner

Fed by innovation, we use the principles of circular economy to reduce the environmental footprint of our buildings while guaranteeing optimal comfort, customization of interior spaces, an almost zero consumption in heating and air conditioning. NATURADOME represents the habitat of the future, environmental-friendly, sober in grey energy and in environmental operating costs.

Architectural description

NATURADOME is an innovative constructive concept that allows for all types of buildings 100% vegetated, with almost no energy requirements. The technical process used is innovative, it can offer individual homes at a lower cost than the market price.
Particularly suitable for the construction of individual houses, the NATURADOME prototype was built in 2014 and has been inhabited by a family since then to study its habitat’s evolution and the harmony between the housing and the people, while making sure to respect their environment.
NATURADOME offers the public a detached house with energy performance that exceed the requirements of the RT 2012. Our house offers ideal thermal comfort while minimizing its primary energy needs.
Ultra-customizable, the interior of the house offers a freedom of styles for each family and allows them to project themselves into a cocoon environmentally friendly and in harmony with nature.
Finally, NATURADOME is a perfect integration with the landscape while enjoying the energy and architectural virtues of vegetable and arable coverage.

1.4 Why NATURADOME is innovative?
The construction process NATURADOME was the subject of a patent application No. FR14 01406 filed on 11/14/2014. This patent will then be extended to the European Union and the United States, based on identified international business opportunities.
The project is based on the principles of circular economy:
• use our waste as raw materials,
• upgrade of existing structures
• repackage materials to give them a new life cycle
• use all the raw materials present on the production site
• converting materials into ultra-short circuit.
Therefore, the innovative nature of NATURADOME comes from the combination of a rehabilitated metal structure (interior finish and formwork bottom basis) with a reinforced concrete vault (bearing function), then a layer of thick wood chips (insulation function), a geo membrane (sealing function), and topsoil in thick glaze (landscape function and surface finish by vegetation).
This device has finally presented the interest to offer a fully cultivable green roof and is capable of producing energy housing in the form of biomass.
Our strategy is to position ourselves through NATURADOME as pioneering the construction of bioclimatic houses of organic architecture. By developing a unique expertise and patented a constructive concept, we make an undeniable advantage over a carrier niche market but whose requirements and performance will tend to be generalized because of the popularity of our societies for sustainable development.
The highly specialized techniques based on innovation in design but also in the manufacture of structures make for contenders their entry difficult. Our goal is therefore part of a logic of specialization of our offering to maintain our margins in a competitive context almost non-existent.
Thanks to our special partnership with the POMES DARRE construction group, we have an industrial base capable of producing immediate passive houses and bioclimatic architecture organic standardized both in terms of structure, highly customizable in terms of development interior design and very aesthetic.
PROJECT DETAILS:
The innovation in the constructive concept of NATURADOME relies on 5 ideas:
2.1 Idea # 1 - Simplify the Living envelop through the upgrading of tunnels:
No more vertical walls or horizontal ceilings!
The frame of the building is a geodesic structure of metal and reinforced concrete that provides the lift functions (up to 14.50 m long), high mechanical strength and contemporary interior finish very aesthetic (it is our customers who say that!) in galvanized corrugated metal.
The metal roof comes from the recovery and reclamation of self-supporting aboveground tunnels of the Air Force to house fighter planes and ammunition.
This removable structure is reconditioned and reassembled identical on site. It also serves as shuttering background working for casting a reinforced concrete vault that will ensure the resumption of climate and structural loads is mainly the weight of topsoil 40cm falling on the house. This structure is based on a continuous footing reinforced concrete section that allows current to encircle the book in its periphery and supporting walls Siporex 20cm in south and north facade. These walls intersect the inner roof and the awning to prevent any thermal bridge between the outside and inside inhabited volume. This awning is used to "break" the direct sunlight inside the house especially around the summer solstice.
At the ground will be implemented an industrial flooring with quartz finish to retain the loft appearance while reducing its cost. A finish like polished concrete will be applied. The pavement will be positioned on a 20 cm polyurethane foam isolation based on a hedgehog serious limestone. This paving incorporates rods which can neutralize outbreaks of foot vault.
The external insulation is ensured by 50 cm of wood chips from the valuation of our timber operating waste (crushed pallets from our activities with organic production 400m3 / year). These chips are being implemented mechanically with a mechanical shovel directly on the frame concrete / steel of the vault. This gives a very porous, very light (300Kg / m3), very little compressible, composed of crushed chips.
On the roof, no tile, no bituminous membrane, but only a 15/10 industrial geo membrane that isolates the wood chips pore water. This membrane is covered with 40cm of topsoil to protect it from UV and weather damage.
A turf-type "ray agricultural grass" very rustic and very economical will be implemented. The maintenance of this vegetation will be facilitated by the creation of movements of land around and Housing to ensure the slopes between 2 and 20% or less, accessible for maintenance.
2.2 Idea # 2 - Protecting the environment and reduce costs by using materials from recycling channels shorted (circular economy approach).
2.2.1 The metal structure
The metal structure is a recycled roof of the Air Force used for the storage of weapons and ammunition. It is made of corrugated metal sheets in both directions of inertia which gives it a self-supporting nature. The company acquired from a local community 360ml of steel tunnel with a reach of 14.50 m and a maximum height of 5.50m. These "tunnels" were recovered near our headquarters and will be reassembled in mainly the same radius. Currently we have a potential of 40 houses with the available linear. The company thought already to find other deposits and especially developing a second generation dome house that can do without these tunnels once the depleted stock.
2.2.2 Insulation materials from the recycling of our waste wood
The insulation is made with chips from our internal die revaluation of our wood waste. This waste comes from the grinding non-returnable pallets, reform shuttering wood, wood packaging from our trading business. We produce between 300 and 400t of waste per year which can then be recycled. This constructive process allows sequester more wood 200Kg per sqm built space. This wood is completely isolated from the outside environment by the slab reinforced concrete self-supporting and the other by a geo industrial PVC membrane 15/10. The cost of these chips is mainly limited to the cost of grinding, storage and transport on site is about 25 € / m3.
Conventional insulation materials will be limited in this context to the dubbing of South and North facades with 20cm of glass wool and polyurethane foam 20cm under paving.
2.2.3 earthworks
We will only use cuttings from the excavation of the site operations. Inert land from foundations used to create the earth moves. It will not create any ground evacuation, everything is upgraded on site in ultra short chain.
2.2.4 Low-carbon concretes
NATURADOME job only cements from the valuation of blast-furnace slag (CEM III) from the metallurgical industry (rebus ores). All concretes used are made from binder from the circular economy, which may also incorporate a portion of aggregates from the valuation of crushed recycled concrete. This will reduce to 70% the carbon footprint compared to conventional concrete. Finally the formulation and rheological mastery of the concrete developed specifically for NATURADOME avoids the use of formwork significantly reducing time-and consequently the overall cost of construction and the carbon footprint.
2.3 Idea # 3 - Standardize methods and mechanizing maximum all the constructive tasks to reduce costs and improve working conditions.
All tasks are mechanized earthworks primary platform initially, creating earthworks and revegetation of the roof is done by 25T excavator.
The implementation of concrete is controlled exclusively by pumped concrete with very little manual implementation. No outer formwork is used. Concrete is formulated with a specific know-how acquired through the controlled concrete activity that ensures the production of reinforced concrete surfaces with slopes up to 70 ° (2/1 vertically), without form, without mechanical projection, using only control rheology of concrete through the use of appropriate formulation and chemistry of modern concretes. We obtain a conventional strength concrete (C25 / 30 XF2) with a texture "tile glue" that holds on any medium, without screening and without formwork under the action of vibration.
This example basin (L21m x x l16m H1.60m) architectural concrete, is implemented without form and without projection on slopes close to 100%, in the same way that the constituent of the concrete vault.
Ditto for the paving, while the constructive process is directly inspired by the industrial engineering. The slab is made in one layer over the entire inner surface with a finishing quartz. The partitions in BA13 are positioned directly on the finished slab without screed realization. The works of conventional masonry (75m aerated concrete wall 20cm Siporex in sections of tunnel in south and north facade) and finishing work, very intensive labor will be reduced to their simplest expression.
Although the degree of customization of the facades of inner plates is unlimited, all projects are from the same operative procedure with standardization of reinforcement which is identical in each bay and infinitely reproducible.
2.4 Idea # 4 - Limit the second work and focus on issues finishes of industrial engineering.
The paintings are limited to a few walls between rooms, bathroom and living room. Only the ceiling small rooms (hall and toilet) is made of BA13. Above the hall (home of 155m²) is the technical equipment of ventilation (VMC double flow). In other rooms, walls and ceilings are formed by the metal vault itself which considerably limits the areas to "flatten" or painting. It retains the rawness of metal to regain voluntary industrial and contemporary architectural style with a loft. All electric ducts are positioned mainly under paving and partitions. The interior lighting is by recessed spot on the ground with indirect lighting on the ceiling to a valuation by the light of the structure.
2.5 Idea # 5 - The comfort and quality of life of the occupants in the heart of our project
Biometric forms an insured thermal comfort, space and interior volume, mineral inside, priority to plant outdoors with conservation of 100% of the land usable area, here are some simple concepts whose Application is based in the execution of this project and remind the importance of producing a quality of life and environmental excellence for the occupants. NATURADOME is primarily designed as a cocoon, bright, spacious and comfortable.

Building users opinion

Happy not to pay heating and live in a warm cocoon all year with an inner volume and an incredible brightness.

See more details about this project

 http://www.naturadream.com
 http://www.mypositiveimpact.org/projets/solution/item/naturadome-121
 https://www.wiseed.com/fr/startups/naturadream

Stakeholders

    Construction company

    NATURADREAM

    [email protected]

    NATURADREAM designs living spaces of the future and made of eco-design a dream accessible to all.

Contracting method

Build and sell construction

Energy consumption

  • 8,00 kWhep/m2.an
  • 4,00 kWhep/m2.an
  • RT 2012

    10% heating, 90% ECS

    120 Kg per year on average consumed wood pellets to heat an interior of 630m3 and a corresponding bidget less than 50 € per year.

Real final energy consumption

    4,00 kWhef/m2.an

Envelope performance

  • 0,90 W.m-2.K-1
  • 1.4 Why NATURADOME is innovative? The construction process NATURADOME was the subject of a patent application No. FR14 01406 filed on 11/14/2014. This patent will then be extended to the European Union and the United States, based on identified business opportunities internationally. The project is based on the principles of circular economy:
    • use our waste as raw materials,
    • upgrade of existing structures
    • repackage materials to give them a new life cycle
    • use all the raw materials present on the production site
    • converting materials into ultra-short circuit. The innovative nature of NATURADOME therefore comes from the combination of a rehabilitated metal structure (based interior finish and formwork bottom) with a reinforced concrete vault (bearing function), then a layer of thick wood chips (insulation function), a geo membrane (sealing function), and topsoil in thick glaze (landscape function and surface finish by vegetation). This device has finally interest to offer a fully cultivable green roof and capable of producing energy housing as biomass

  • 0,90
  • EN 13829 - q50 » (en m3/h.m3)

  • 0,40
  • no automation system except automated night-time ventilation

Systems

    • No heating system
    • Other hot water system
    • No cooling system
    • Double flow heat exchanger
    • Wood boiler
    • Energy recovery from waste
  • 100,00 %
  • NATURAWATT is a micro digester coupled with the green roof of NATURADOME. NATURAWATT is mainly powered by turf product in the plant canopy and secondly by sewage housing. This microdigester produces biogas that fuels a boiler for hot water. This boiler producing ECS also heated by waste heat from the interior volume NATURADOME. This habitat is very isolated (U = 0.09) and high performance we do not need energy source to heat the interior volume if we simply indoor atmosphere thermostatically controlled at 20 ° C all year.

    NATURADOME used as main source of energy chaiffage fatal for household appliances (water heater thermo dynamics, refrigerator and home computer mainly)

GHG emissions

  • 100,00 an(s)

Water management

  • 100,00 m3
  • 100,00 m3
  • Our process NATURAWATT combines micro digester plant with roof NATURADOME. Biomass grown on the roof, and wastewater housing feeds a digester which produces a biogas for the production of hot water and nitrogenous fertilizer of water used in the biomass (mainly ryegrass and clover) produced on the roof. Vegetative cover serves as a biofilter and ensures the phytoremediation nitrogenous waters after transit of several months in the high land thickness has on NATURADOME is collected by the drainage system and then treated by reverse osmosis to be reused as a domestic water users NATURADOME. This process is the subject of a patent application.

Indoor Air quality

    Very little paint, interior facing food grade steel without solvent fumes. No glues or solvents used in the materials of finishing work.

Health & Comfort

    acoustic classification BR1. The mass of law is ensured by a layer of soil at least 40cm and a massive vault reinforced concrete. The acoustic insulation is total with the external environment. Low frequencies are handled by the mass character of the vault and acute frequency waves of the vaults as well as insulation in thick wood chips.

Product

    NATURADOME

    NATURADREAM

    [email protected]

    Gros œuvre / Structure, maçonnerie, façade

    NATURADOME is a green patented bioclimatic ark for the construction of individual or collective housing, public buildings and professional high performance. Its construction process not binding on the constructive regulation, uses circular economy and ensures full integration into the environment. NATURADOME generates outstanding thermal performance and the ability to create an interior space 100% customizable from 1380 € / m².

    The social acceptability of the project is complete: Easy achievements in the construction phase, the membership of the occupants living space, social acceptability of the neighborhood that was sensitive to the aesthetic quality of the work.

Construction and exploitation costs

  • 250 000,00
  • 1 150,00
  • 3 800,00
  • 15 000
  • 215 000

Energy bill

  • 150,00

Urban environment

NATURADOME can locate in rural conservation area because of its high degree of integration. NATURADOME can also be used to create green networks populated urban in a logic of concentration of land and revegetation of soils artificialised (rehabilitation of brownfields for example)

Land plot area

2 500,00 m2

Built-up area

180,00 %

Green space

2 300,00

Parking spaces

4 parking spaces

Building Environmental Quality

  • indoor air quality and health
  • biodiversity
  • acoustics
  • comfort (visual, olfactive, thermal)
  • waste management (related to activity)
  • water management
  • energy efficiency
  • integration in the land
  • building process

Reasons for participating in the competition(s)

NATURADOME's assets:A patented technology.A simple constructive system, quick, replicable and compatible to French regulations. Thermal performance twice superior to the current regulation requirements (RT2012 minus 53%). Great indoor luminositybecause of the great ceiling height (5,15m) and double orientation. Daylight ratio superior to RT2012 requirements. Roofing is 100% vegetal and farmable, with a great thickness of vegetal earth or earth originally from the land. Very good insertion in the landscape. No AC thanks to the use of a canadian well combined to automated night ventilation. 70% of used materials are from circular economy.
  • No soil impermeablisation.
  • Potential to turn the building into a positive energy one without any solar panel thanks to the biomass produced by the vegetal roofing (NATURAWATT patent to be delivered).
  • 300Kg of CO2/m² of inhabitable surface stored thanks to the valorisation and implementation of a 60cm layer of wood chips from the shredding of non consigned wooden paddles to insure the insulation.
  • Cost starting from 1380€ TTC/m² 
3 months construction for a 100m² building.The practical application of the concept into a collective housing, public or industrial buildings with high energy efficiency.

· 15 projects in study for construction in 2016/2017.

Building candidate in the category

Energie & Climats Tempérés

Energie & Climats Tempérés

Coup de Coeur des Internautes

Coup de Coeur des Internautes

Green Building Solutions Awards 2016


Author of the page

  • Benoit DARRE

    executive manager

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