- Building Type : Isolated or semi-detached house
- Construction Year : 1870
- Delivery year : 2022
- Address 1 - street : 32 Impasse de l'Écluse 67200 STRASBOURG, France
- Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.
- Net Floor Area : 84 m2
- Construction/refurbishment cost : 110 000 €
- Cost/m2 : 1309.52 €/m2
Primary energy need :
(Calculation method : )
L'Orée 85 is a place of life and experimentation dedicated to the meeting between the public and to societal and environmental transitions, through a sustainable restaurant-café-bar, an educational garden and a cultural program.
Winner of a call for occupation of the fluvial area launched by Voies Naviguables de France (VNF), the project was born in the old lock house No. 85, along the Rhône-Rhine canal, on the initiative of three friends: Lola Bertrand, Manon Cordier and Maxime Billmann. From the first reflections, a point of honor was made to develop all aspects of the project with the greatest respect for the principle of sustainability , in accordance with the personal values of the three founding members and the logic of social economy. and solidarity in which the cultural third place, now constituted as a SCIC, is deeply inscribed.
From a planning and construction point of view, the in-house team has made second-hand and re-use automatic. As a private group, it is their convictions that have led them to use reuse as a priority as sources of materials: conservation of existing elements and reuse in situ. For the other elements, they have systematically chosen biosourced.
The house, whose atmosphere mixes Greece and holidays by the sea, is entirely furnished using second-hand furniture unearthed by browsing the classified ads, garage sales and consignment sales in the region: from the shell chandelier, to the amphora through the toilet paper dispenser with fish motifs. When the materials are not reused, they are almost all bio-sourced : tiles, fabrics, solid oak parquet, seagrass, wood wool, cob, or even lime.
Key local partners in sustainable housing and the circular economy were integrated into the project from the outset. Together with the BOMA Les BOnnes MAtières circular economy design office, a major regional player in reuse in the construction sector , a diagnosis of needs was first carried out and updated throughout the project, then a on the sourcing and on its routing on site of a maximum of materials coming from deconstruction sites was carried out: railings of stairs of wooden building reused in fence, bench and shelves; a reused metal staircase; cellar trellises reused as cleats; double-glazed window panes from a building reused as glazed veranda roofs or even office doors reused to make a chicken coop. As for the Atelier NA, a collective of architects working for inclusive construction , it fed the operational dimension of the reuse/reuse of the project while helping to make many aspects of this site participatory. The construction of a reused summer bar from the wire netting deposited in situ, the manufacture of wood and wicker structures with rounded shapes to receive the cob then the lime and the manufacture of a reused chicken coop from doors, have allowed the inhabitants of Strasbourg to appropriate the space by participating in its sustainable construction.
Several companies and craftsmen also participated in fully integrating the suggested principles into their approach, more or less present in their basic values: the carpentry and eco-construction company Hylê carried out the carpentry work on the terrace and the veranda with exclusively local wood (Douglas fir from the Vosges); the company Technopieux prepared the foundations of the aforementioned construction elements from piles screwed into the ground, thus avoiding concrete foundations; the locksmith-metalwork company La Forgerie built the frames to receive the reuse glazing; and the low-tech construction association Lowarchitech accompanied us on the implementation of the wickerwork, cob and lime work sites.
Building users opinion
At the opening night on Saturday, May 14th, descriptions of the place and the energy that emanates from it varied between vacation home, campsite, Woodstock. So many terms that suggest a feeling of well-being!
Below are some testimonials and comments from different people about the project:
“The worksites allow you to meet people and the atmosphere is really cool. There is a real collaboration behind it and they do this with everyone and for everyone. There's a satisfying side to seeing the place now and imagining the end result. I can't wait to come back to the opening and to be able to tell myself that I've put a little piece of land here." - Charlie, volunteer on the participatory sites
“Thank you for your admirable commitment to bringing this beautiful place back to life! » - Pierre Jakubowicz, city councilor, vice-president of the Tourist Office of Strasbourg and its Region
“This is the type of project where there is heart and investment. It is a human approach carried by a team with which one can easily identify. The out-of-town side of the site, this in-between, is quite atypical as a location. It really makes me want to visit him. - Aurélien, volunteer on the participatory worksites
“You feel like you've escaped the city even though you're 10 minutes from the centre. - Christiane, visiting cyclist
" Tremendous ! Delighted with the prospect of being able to bond with people as diverse as they are unknown in this magical place. I imagine - perhaps a little too quickly - bicycles, canoes and great games of tarot to change the world… And then the day when we can swim back… what a party! - Anonymous comment on a press article (Rue89 Strasbourg)
"The way you view people in this place does a lot of good." - Danny, volunteer in the garden via the La Cloche network which fights against the exclusion of homeless people
If you had to do it again?
- The square glazing which had to be reassembled on frames to become front windows of the veranda could not be reused. This implementation required the installation of non-conventional frames, which would have delayed the site by more than 6 months, which was impossible on a 4-month site.
- Double PVC window door: was planned to become the main access door to Orée 85. The technical characteristics of the product did not allow PRM access to the site. Indeed, the entry threshold would have been greater than 2 cm. The window door could therefore not be used on the site.
- Exterior galvanized staircase: during the implementation of the staircase, we realized that the 2 stringers were not the same size, and that the fixing bolts of the stringers provided were not suitable. We therefore had to make a wooden connection to make up for the too short stringer, and to buy threaded rods adapted to the staircase. This caused an additional installation delay, but the schedule was nevertheless respected, and the staircase could be installed according to the rules of the art.
> make a more precise statement upstream of the elements to be reused, before transport to the site
> be flexible on the site, and plan for contingencies in the schedule
See more details about this projecthttps://www.oree85.org/home
Orée 85 for all except the photo of the outdoor bar (Abdesslam Mirdass)
(Other photos are scattered on the other tabs, for lack of space here)
Other consultancy agencyBOMA Les BOnnes MAtières contact[a]boma.alsace AMOE circular economy in the building sector / Sourcing of reused materials, legal and logistical support
OthersAtelier NA contact[a]atelier-na.eu User control assistant and supervisor at participatory workshops / Realization of an outdoor summer bar and a reused chicken coop / Realization of a cob participatory site
CompanyHylê éco-construction Samuel Laporte - hyle.be[a]ecomail.fr Framework / Manufacture and implementation of the terrace and the veranda
CompanyLowarchitech Maurine Koeberle - maurine.koeberle[a]lowarchitech.com Assistance in the realization of an interior cladding in cob and lime plaster
CompanyTechnopieux Guillaume Mongin - guillaume.mongin[a]technopieux.fr Manufacture and installation of foundation piles
CompanyLa Forgerie Julien Giraud - contact[a]la-forgerie.com Locksmith-Metalwork / Installation of the metal structure and reused glazing of the veranda / Manufacture and installation of galvanized steel railings and a raw steel bar sky
Other consultancy agencyFondasol Adèle DEBONNET - adele.debonnet[a]fondasol.fr Realization of a soil study
CompanySARL NASS Monsieur NASS - Nass_67800[a]yahoo.fr Opening of bay and load-bearing wall / Structural reinforcement / Partitioning / Painting / Tiling / Implementation of the reused window door
CompanyElectricité DNR Mehmet YIGIT - electricite.dnr[a]gmail.com General electrical installation
CompanyDOLLINGER Julien PAULUS - julien.paulus[a]ets-dollinger.fr Rehabilitation of existing sanitary and heating networks / Implementation of reused earthenware (WC)
CompanyMenuiserie SENGLER Thomas RISCH - thomas.menuiseriesengler[a]gmail.com Manufacture and installation of French doors, windows, interior doors / Supply of solid and laminated wood worktops
CompanyTECHNICIEN DES BRASSEURS Pierre MUNAR - pierre[a]techdesbrasseurs.fr Supply and installation of kitchen and bar equipment / Installation of a reused 3-door fridge
CompanyKSF Gastro Ahmet ORHAN - ksfgastro[a]gmail.com Supply and installation of a hood
OthersPRESTATERRE Romain Linkenheld - r.linkenheld[a]groupe-altair.org Delivery of reused materials to the site
- Individual gas boiler
- Water radiator
- Individual electric boiler
- No cooling system
- Single flow
- Other, specify
Life Cycle Analysis
- Exterior wood Douglas and spruce
- Interior wood: olive ash and MDF
- hemp ropes
- Poids de la neige
Indoor Air quality
Health & Comfort
The place is located between the Plaine des Bouchers and the QPV (Quartier Prioritaire de Ville) of Elsau, whose economic activity is limited to that of an industrial and service area. Landlocked between cycle paths, roads, river and railroads, and close to reservoirs of biodiversity, this area concentrates as great a diversity of routes, landscapes, as public: boatmen and yachtsmen passing the lock, cyclists and walkers from Strasbourg and tourists, employees of the industrial and service zone as well as a population with social insecurity residing in neighboring social structures.
The lock house is located along the Rhône-Rhine canal and the Euroroutes vélo 5 and 15, synonymous with a large flow of cyclists, who already seem to make the Orée 85 a stage in their journey. These roads make it easy to connect the place to the center of Strasbourg (in 10 minutes) as well as to more distant geographical points.
ADOMA, emergency accommodation center located 200 meters from the site; Entraide le Relais, day center for people with social and professional difficulties located 700 meters from the site; or even La Cloche, a national network for the fight against extreme exclusion located a little further away, are all structures present before our arrival that we fully integrate into the various activities of the project (participatory work sites, kitchen and garden workshops).
Finally, the development of the outdoor space and the operation of the place are harmoniously integrated into the surrounding ecosystems, with the aim of preserving and developing them: development of a natural vegetable garden on an area of 100 m² and partial auto-food production, installation of beehives, planting of seeds of local species and conservation of the vegetation in place. Biodiversity refuges and ecological corridors ensuring the movement of biodiversity between the two reservoirs of biodiversity of the green toad are also enriched.
Land plot area
Reuse : same function or different function
- Structural framework
- Indoor joineries
- Outdoor joineries
- Suspended ceilings
- Heating ventilation air conditioning
- Wooden staircase handrails: 80 m linear (reuse in benches, shelves and bar structure) ;
- Filmed plywood panels : 15 m² ;
- PVC interior door *1 unit
- Wooden cleats for the structure receiving the cob: 350 m linear ;
- Clay soil (reuse) : 12 m3
- Existing windows PVC *10 units (conservation);
- Existing window door PVC * 1 unit (reuse in situ);
- Fixed frames of the veranda spandrels: 4 m² glazing (reuse)
- Double glazed windows reused in veranda roofing (laminated): 19 sq. m.
- Insulation under the face of the attic (rock wool): 50 m², thickness 120 mm;
- Polystyrene insulation of the walls: 180 m², thickness 60 mm
- Wooden cleats reused in the lower floor of the veranda to maintain the blocks of wood wool insulation: 30 linear meters;
- Wooden cleats reused in laths of the wood frame walls of the veranda: 50 linear meters;
- Wooden cleats reused in counter laths to support the siding of the veranda: 90 linear meters
- WC x2 u (conservation)
- Sinks x2 u (reuse)
- Collector and ceramic network preserved
- Individual gas boiler * 1 unit
- Water radiators x8 u (conservation)
- Fridge 3 doors: 1 unit
- Boat Anchor Buoys: *3 units
- Ceiling lights and lampshades *10 units
- 19m2 of solid oak flooring
- 35m2 of laminate flooring (conservation)
- 1 sqm tile floor
- 50m2 of sea rush
- Placo in under face of roof: 50 m ² (conservation)
- False ceiling plaster on reed: 95 m² (conservation)
- Exterior metal staircase: 1 u (1.20 ml, 9 steps)
- Handrails of wooden staircase reused in wooden fence: 120 linear meter
- Blocks in Vosges sandstone : 1.5 m3 (reused in situ)
- Blocks in Vosges sandstone : 3 m3 (reuse)
- Outdoor summer bar: Cable trays (main elements of the structure of the installation): 100.60 linear meters
- Metal angles for the framework: 110 ml
- terrace boards for the seats: 17 ml
- Mesh: 25 m² (25 sq. ft.)
- Plexiglass PMMA for the cover: 35 m².
- Melamine panels : 4 m² (4 sqm)
- Wooden cleats to maintain the panels : 30 ml
- Handrails of staircase : 23 ml
- Fabrics : 40 m
- Office doors 10 units
- Wooden cleats to hold the doors : 15 ml
- Door handle : 1 u
- Melamine panels for a temporary floor of the building site: 20 m².
- Bedside lamps x10 u
- Interior bistro chairs x12 u
- Interior chairs x5 u
- Stools x7 u
- Consoles x5 u
- Chest of drawers x2 u
- Office chairs x6 u
- Outdoor bistro tables x10 u
- Outdoor bistro chairs x80 u
- Garden tables x2 u
- Garden chairs and deckchairs x15 u
- Sofas/Benches x2 u
- Armchairs x6 u
- Indoor tables x4 u
- Metal cabinet shelves (for bar shelves) x4 u
- Social landlord VivaEst, demolition site of residential buildings in Hombourg Haut (57)
- Client CEA, General contractor CKD : demolition site of the administrative and technical center in Schirmeck (67)
- Physical platform of re-use of the demolisher Premys agency Ferrari in Mulhouse (68)
- Site of the Orée 85 (conservation in situ and reuse)
- Le Bon Coin
- Emmaus Association (67)
- BBNE construction site in Strasbourg (67)
- Construction site of a housing estate in Mommenheim (67)
- Company VNF (Voies Navigables de France) (Strasbourg 67)
- Donation of a private individual, Strasbourg (67)
- L'Art et la Matière, associative platform of collection and resale of reused materials in Mulhouse, Alsace (68)
- Physical platform of reuse BOMA in Strasbourg (67)
- In the design phase: the deposit had not been identified at the time of filing the permit, the architect had to propose a provisional calpinage corresponding to the deposits of laminated glass usually encountered during demolition sites. When the definitive deposit was decided, the project was updated to reflect the real situation.
- The installation of these re-used glazings required a screening of the framework based on the size of these glazings. The framework of the roof had to be accurate to the milimeter to match the dimensions of the glass. A lot of educational and coordination work had to be done beforehand to make the carpenter and the locksmith aware of these specific issues. The glazing was installed not by a glazier, but by a locksmith, who accepted the responsibility.
- Purchase of larger quantities to compensate for breakage or defects in certain materials.
- Storage on the Orée site awaiting installation.
- Saving of 2000 euros HT approximately realized;
- Allowed to apprehend how to conceive and build with reemployment;
- All the actors, companies included, could benefit from this practical case of the approach of reuse;
- Guided an aesthetic choice for the project.
- Purchase materials prior to calpining, to directly incorporate the dimensions of the reused materials;
- Make sure that the movement of reused materials stored on site is easy (palletization, cleaning of materials after reception, adapted packaging...).
- Loss of time for the preparation of the material;
- Lack of quantity (several building sites to find, limit of the deposits);
- Cumbersome storage on the site of the Orée while waiting for installation + required several displacement of these cleats on the points of storage before implementation;
- Iso cost with a new material (100 euros HT of economy).
- The claustras were delivered on site by the company in charge of depositing them selectively on the building site. The company being located at 10 min of the construction site of the Orée 85.
- Sufficient quality for the use that was made.
- Removal upstream by another structure
- Purchase of a batch of claustras cut out between the nails, to avoid splitting
- Search for reuse materials suitable for this use and very specific dimensions.
- Delivered not disassembled, and not on the building site because of the problem of impossible access to the semi-trailers > it was thus disassembled outside the building site, to be moved by hand (extremely heavy) on the site located at 200 m.
- One of the rails was shorter (staircase probably coming from an emergency staircase with a turning landing). A wooden connector had to be installed to make up for the difference in length.
- Storage on the site of the Orée awaiting installation (garden).
- No major modifications had to be made
- The staircase was perfect for the intended use!
- Savings of 1000 euros HT approximately realized
- Check the geometrical characteristics beforehand (length of the stringers, demountability, weight), so that the material is in conformity with its future use.
- The staircase was supplied without the system of fixing to the high support. We were not informed of this at the time of purchase.
- Wooden cleats (565 ml)
- Plexiglass PMMA (35 m²)
- Melamine panels: 24 m² (24 m²)
- Filmed plywood panel : 15 m².
- Anchoring buoy: 3 units
- Metal angles: 110 ml
- Cloth, 40 sqm
- Chest of drawers x2 u
- Garden tables x2 u
- Sofas/benches x2 u
- Armchairs x6 u
- Metal cabinet shelves (for bar shelves) x4 u
|Categories||Avoided CO2 (kg)||Avoided water consumption (m3)||Avoided waste (kg)|
|Exterior fittings / Locksmithing - Metalwork||0||0||0|
|Roofing / Exterior fittings||0||0||0|
|Climatic engineering equipment||0||0||0|
|Floor and wall coverings||0||0||0|
|Locksmithing - metalwork||0||0||0|
|TOTAL||Avoided CO2 (kg)||Avoided water consumption (m3)||Avoided waste (kg)|
|Km in a small car||Nb of rectangular bathtubs||nb of years of household waste of a French person|
|Equivalent tript Paris- Nice||210,0|
Reproductibility and Innovation
- The client was surrounded by actors specialized in reuse (MOE, BET EC).
- Regular exchanges around the project and definition of the stakes and needs of the client, during meetings with the client, the project manager and the circular economy consultant. These exchanges were done very early, allowing to work in parallel of all the phase of design and works.
- Realization of a catalog of materials of re-use to be injected in the operation for the realization of the sourcing (quantity, estimated price, dimensions, building sites deposits).
- Very regular exchanges between the actors of the project and communication on the evolution of the needs in design phase (dimensions or more precise technical characteristics).
- Regular updates on the targeted materials. Confrontation between the targeted materials and the technical, economic and logistic constraints of the operation. Once the materials were validated, the decisions were quickly taken by the client and the contractor, which greatly facilitated the search/reservation/purchase of the reuse materials, as well as the resulting logistics.
- The materials are reserved/purchased from the deposit sites. The invoices and contracts of transfer are established by BOMA for the traceability of the materials.
- The transport is organized, the materials are delivered on the construction site of the Orée 85, or are temporarily stored in the BOMA stock.
- DCE companies: there was no specific market for reuse. For each lot, certain services were identified as being the installation of elements of reuse by the companies. The project manager has made the contractors aware of the issues of a construction site using reuse.
- The materials are restored or transformed for reuse and installation according to the plans of the project manager.
- The mission of sourcing reuse materials was launched very early in the project. This allowed to have time to look for the adequate materials, to have a long term vision of the available materials and their temporality of removal, to be able to source on another building site/platform in the event of a delay of operation on a deposit building site.
- setting up selective cleaning lots on deposit sites before the demolition lot, in order to make materials available upstream for re-use
- This reduced the quantity of targeted materials. We found other deposits in time, thanks to the sourcing of materials very upstream on the operation.
- the possibility of having had a sample of certain materials (laminated glazing) upstream for the MOE. This allowed him to understand the specificity of the material versus its future use.
- The decennial insurances of each company take care of the works carried out, including in materials of reuse.
- Sensitization of the companies of the building site through the MOE.
- The sourcing mission led by BOMA includes an awareness of the circular economy approach of the building sites or actors. The future use and the place of reuse of the materials are communicated. A balance sheet of the reused materials is realized and diffused.
- We have created an event for the Architecture Days at the Orée 85, in the form of 2 site visits to explain the global approach of reuse on this operation and the design approach including the circular economy, in order to raise awareness, inspire and make the approach concrete. The target audience of this event is: all public + building actors. This visit took place during the construction, on 29/10/2021, presented by the project management and BOMA, and gathered 20 visitors.
- Organization of the Recup, a 2-week workshop co-organized by Boma and Atelier Na, to raise awareness and skills of architecture students on the subject of reuse. Realization of the summer bar during this workshop by the students, based on reused materials.
- Organization of a participative workshop open to all "Poules Party" for the creation of a henhouse in reused materials.
- Multiple events will take place on this site during 2022, to raise awareness of the general public and professionals to this circular economy approach.
- The materials deposited for reuse in situ have been deposited/replaced consecutively, to avoid breakage or storage.
- The deposited materials (approximately 6 m3), not reused in situ, were sorted in situ and evacuated by the companies in the appropriate channels.
- 10 000 €
- 10 %
- 30 000 €
Reasons for participating in the competition(s)
Without being motivated by evolving legislation in the circular economy sector, nor seeking to be part of a marketing trend in the era of the social and solidarity economy, the Orée 85 team and its partners feel deeply driven by the principles of sustainability. Ecology, social and economy converge in everyone's fields and have naturally intersected on the habitat side.
By being invested in all the multiple aspects of the project for this social and cultural third place and by wanting to consider sustainable construction as a normality, the internal team came to forget the efforts it was making in that Sens. It was the BOMA collective that invited us to become aware of the legitimacy that we would have to participate in this competition: the quantity of second-hand furniture and materials, the quantity of reused materials and the many innovations in terms of reuse (roofing windows, wooden fence and furniture, chicken coop, summer bar, etc. have earned us an environmental record that is sufficiently exemplary to compete for the Circular Buildings Trophies 2022.