- Building Type : Collective housing < 50m
- Construction Year : 2015
- Delivery year : 2016
- Address 1 - street : 102 avenue du professeur bergonié 33130 BèGLES, France
- Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.
- Net Floor Area : 950 m2
- Construction/refurbishment cost : 1 450 000 €
- Cost/m2 : 1526.32 €/m2
Primary energy need :
(Calculation method : RT 2012 )
The project is a social experiment that tackles the notion of "experimental" so that it can fit into a reality that is understandable and accessible to all the actors of the project, from conception to completion. realization and all his life.
It is a project of cooperative collective social housing, that is to say that it is about a group of reasoned people constituted by cooptation to pool their means in order to realize their habitat. Users benefit from the investment of a social lessor and assistance to the project owner. However, this distances us from the traditional process of mounting an operation. By the nature of the project, everyone (users / project management / project management) is invested and responsible offering the project a dimension "brings".
The structural system in framework and wood and straw infill, the passive ambition of the operation, the bio-sourced nature of the materials used and all the project attitudes stem from this human dynamic. This attitude is at the heart of energy saving issues, however simple it may be.
The innovation goes in the direction of the simplification of the systems used, a return to the essential valuing local resources, renewable, integrated in the natural cycle of manufacture and end of life and encouraging the development of local networks and a large economy human. Against the current or carrying a current respectful of life on earth, the project wishes to praise the highest human ingenuity, awareness of its potential for mutual help, listening and transmission.
The cooperative habitat of Bègles "La Ruche" is the bearer of this desire to transform the city, an urban village with a human face. Do together and otherwise tomorrow's housing. Thus the success of this project will have an immediate effect on the transformation of the city of Bègles in the sense that it engages on the voice of the cooperative and participative habitat, so on real changes in the ways of doing the city and its main constituent, housing.
See more details about this projecthttp://www.dauphins-architecture.com/la-ruche/
3rd part certified
Other consultancy agency180 degrés ingéniérie j.coeurdevey[a]180ingenierie.com environmental engeenering consultancy
Other consultancy agencyeco étude luc.floissac[a]gmail.com life cycle analysis of the building + straw construction support
Owner approach of sustainability
Everything begins at the Town Hall of Bègles, who wants to see on its territory an exemplary participative project. Four years later, after an unforgettable human adventure, 11 homes enjoy an exceptional environment. The keys to this success? A team involved from genesis to delivery. Operation La Ruche is the winner of the call for projects at the Aquitain Basse Energie Building 2014. It has been the subject of a detailed carbon assessment conducted by BCO2 Ingénierie It is a participative habitat, the inhabitants are involved from the first phases from design to project. A meeting every two weeks on average nourishes the project and strengthens the group. since the call for participation in this first "cooperative" housing in the region in March Building professionals (construction company wood, straw construction), our design offices and 180 degrees have shared in these public meetings , their work and answered the questions of future inhabitants on the performance and implementation of the chosen materials. They are all the more involved because a participative project and a "second project" will be organized. The participatory project allows not only a project economy but also and above all a real knowledge of the inhabitants who will participate in the constitution of their walls. This call for participation will also be an opportunity to transmit the technique of straw construction and associated coatings, accessible to the greatest number.
Is provided in the mission of the office of study 180 degrees, the drafting of a guide of "good use" of the building intended for the inhabitants. This is the subject of future public meetings, to understand the workings of this "living machine" so that it can live for a long time in a comfort and an optimal energy saving
The two buildings face each other: a building of 7 collective dwellings and 4 contiguous houses. They were built on the plot of an old detached house. There were no parking in the basement, but surface outdoor parking, half sheltered. The structure of the building is concrete on the ground floor. It supports floors and attic insulated wood frame with 37 cm of straw between the uprights and 40 mm of wood fiber from the outside. The partitions were made of wood frame with mud filling (straw + raw earth). In order to limit thermal losses through the ceilings, the wooden deck is insulated with polyurethane and the crawlers have 45 cm of cellulose wadding between and under the wooden purlins.
If you had to do it again?
Building users opinion
"For the moment, it is especially the children who have appropriated the local, explains Noëlle, because we have taken our marks recently. It is also pure happiness to see them together, it's like a big family! Mutual support among the inhabitants is reflected in particular by the babysitters. Since then, the project has made small, which shows the interest of supporting this type of operation to show that it is possible.
- 56,00 kWhep/m2.an
- 67,80 kWhep/m2.an
- Wood boiler
- Individual electric boiler
- Solar Thermal
- No cooling system
- Natural ventilation
- Single flow
- Wood boiler
- 34,74 KgCO2/m2/an
- 252,43 KgCO2 /m2
- 50,00 an(s)
- 1 989,43 KgCO2 /m2
Life Cycle Analysis
- Wood mass: 26890 kg
- Mass bio-based materials excluding wood: 14964 kg
- Mass all materials: 303972 kg
- Wood mass: 16835 kg
- Mass bio-based materials excluding wood: 31861 kg
- Mass all materials: 120563 kg / m²
- Wood mass: 476 kg
- Mass bio-based materials outside wood: 0 kg / m²
- Mass all materials: 4706 kg
Health & Comfort
On an urban site on the outskirts of the metropolis of Bordeaux, between large complex and suburban fabric, directly related to the realization of the Tramway, the project occupies a plot of 1150 m², mainly oriented, north and south, on a horizontal ground. "The hive" is a semi-collective program in participative and collaborative housing with shared and shared spaces, made of wood frame, straw filling, earth and lime rendering. Two buildings are developing on the parcel: the first contains seven units in street alignment. Its volume on four levels is animated by alternating volumes and materials, such as wood cladding and white lime renders on a concrete base. This building also contains the common room for the inhabitants of 80 m², open on the heart of islet. At the top is a common terrace overlooking the gable on street. The design is characterized by the multiplicity of possible routes, through many stairs and corridors that make traffic spaces a major and inhabited component of the project. The second building contains four dwellings at the bottom of the plot, the facades alternate between wooden cladding and lime plaster. Joineries are also in wood, some set with metal frames, others with wooden frames. The sloped roofs are insulated in cellulose wadding and have various coverings: wood cladding, steel tray, tiles. As for the walls, they follow for each dwelling the interior use, elaborated with the inhabitants: all the openings are particular and included in the custom wood frame.
Land plot area
1 150,00 m2
Building Environmental Quality
- Building flexibility
- indoor air quality and health
- works (including waste management)
- consultation - cooperation
- comfort (visual, olfactive, thermal)
- waste management (related to activity)
- energy efficiency
- renewable energies
- building end of life management
- integration in the land
- building process
- products and materials
This participatory habitat is built in wood frame filling straw bale coated earth facing side. The floors of the dwellings are in wood frame. The dividing walls in the dwellings are also made of wood frame daub fill, finished coating earth.Building level of performance effinergie +.
The building is of category 3 ° level: level of the highest of the label "Bâtiment biosourcé" of December 19, 2011.