- Building Type : Collective housing > 50m
- Construction Year : 2017
- Delivery year : 2018
- Address 1 - street : rue Emile Counord 33000 BORDEAUX, France
- Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.
- Net Floor Area : 5 870 m2
- Construction/refurbishment cost : 10 510 000 €
- Number of Dwelling : 49 Dwelling
- Cost/m2 : 1790.46 €/m2
Primary energy need
(Calculation method : RT 2012 )
The project is oriented and highlights a future place that will be created in connection with the urban project of the Grand Parc in Bordeaux. It occupies a central place in redefining the neighborhood. It also has an identity vocation because it constitutes a visual catch from the perspective created by the plot where it is located. The volume, simple but slightly decomposed, expresses the public and private vocations of the building and highlights a forecourt that opens on the urban project of the Grand Parc.
A language common to both uses allows a sober, simple and effective reading of the building. The treatment of the CACIS and Territorial Pole of Solidarity entries, in withdrawal, allows to give them an urban reading and enrich the public space. The floors, treated in continuity with the ground floor, define a housing program in relation to the public spaces that surround it. The accommodations are served by two vegetated exterior corridors located in the heart of islet.Les apartments are through and offer guidance on public spaces. Balconies, terraces and loggias provide privileged, diverse and intimate outdoor spaces for residents.
Coming from the triangular plot, a game of bias creates different orientations and gives a dynamic to the project. A duo of materials animates the building: the volume is covered with Aluzinc cassettes and a vertical douglas cladding is found in the recessed areas (entrances, loggias, balconies and passageways). Railings in Aluzinc are dematerialized thanks to a variable perforation.
The project is subject to strict environmental specifications, demanding in particular compliance with the Agenda 21régional and Aquitain Plan Climat .
He obtained Habitat & Environment certification (Certification H & E 2012MAJ 03-2014 Profile A):
1> Environmental management of the operation
2> Own site
3> Energy - Reducing the greenhouse effect (G-RAD digital radiators)
4> Structural sector - Choice of materials (use of recycled aggregates concrete)
6> Comfort and Health
7> Green gestures
A subsidy from ADEME allowed us to set up a free and innovative heating system throughout the building. Designed by Qarnot Computing, the Qrads are computer radios, using the heat generated by the cores of processors making calculations to heat homes and offices (energy fatally produced). A world first on a new building. We obtained a title V for the use of Q-RAD connected radiators.
This project serves as a Ready 2 Services label pilot for connected buildings communicating with their environment. It has been conceptualized with BIM technology.
Sustainable development approach of the project owner
The new Territorial Solidary Pole of Bordeaux in the Grand Parc district, is an exceptional construction project based on two aspects, innovation and collaborative design. The Department has entrusted Gironde Habitat with the construction of its new Department House in the form of a Sale in the future state of completion (VEFA). The Gironde Habitat project integrates the premises of the Maison du Département and the construction of 49 social housing units, thus making the VEFA possible. The Department wanted the Territorial Pole of Solidarity to be a Positive Energy Building (BEPOS), a building that produces more energy (electricity, heat) than it consumes for its operation. It was also a key point for the social landlord, Gironde Habitat, who wanted to reduce the energy costs of tenants. To enable the development of innovation in housing, the Department in 2015 created the financing of the Habitat © Manufacturers that tested in particular on the residence Florestine carried by Gironde Habitat the use of "l ' energy "in order to reduce to zero the bill" electric heating "for the tenant. This policy of Fabriqu'Coeur © allows, in an experimental setting, the realization of operations of rehabilitation or construction of innovative social housing which if they are conclusive can be transposed and or generalized.
The project is oriented and highlights the future place that will be created in connection with the urban project of the Grand Parc. The volume, simple but slightly decomposed, expresses the public and private vocations of the building. The treatment of the ground floor, set back, marks the entrance to the MDSI and give it an urban reading. The entrance marks the northern corner of the parcel and enriches the public space while affirming its presence on the Counord Avenue. This same treatment is used for the entrance of CACIS, located at the south end of the field. A language common to both uses allows a sober, simple and effective reading of the building. The floors, treated in continuity with the ground floor, define a housing program in relation to the public spaces that surround it. The diversity of the outdoor spaces and the perforations of the facades individualizes each apartment and accentuates the desired effect of lightness. The accommodations are served by two external corridors located in the heart of islet. Each apartment is through and offers an orientation on public spaces to limit the vis-à-vis with the built environment. Balconies, terraces and loggias provide privileged, diverse and intimate outdoor spaces for residents.
Building users opinion
The first feedback from the occupants is very positive: they appreciate the quality of life offered by the Residence Florestine. The delivery of the building was very recent, it is still too early to have more complete feedback on the strengths and weaknesses that will be detected by users.
If you had to do it again?
We are very pleased to have put in place an innovative energy solution, and proud to have been the first to offer this technology to meet the expectations of the owner, a world first. Free heating also helps to fight against fuel poverty that affects more and more users. We can always go further in our search for sustainable materials that must complement methods of construction thought to be the least impacting possible on the environmental level: the Residence Florestine is for us an experiment that will allow us to go further in our architectures for rethink the city of tomorrow.
See more details about this projecthttp://www.moonsafari.archi/49-logements-et-pts/
© Benjamin Guénault
Other consultancy agency
Adnane AOUAMI / 05.56.00.12.72http://www.verdi-ingenierie.fr/contact/
05 56 85 96 89https://www.emacoustic.fr/
Acoustical design office
OOK. ATELIER DE PAYSAGE GASTEL
Hervé GASTEL / 05 56 96 61 16http://www.ook-paysagistes.com/contact.htm?ob=c
Other consultancy agency
LESS IS MORE
Yael LARROZE / 06 88 37 64 39
Project Manager BET HQE
Juline DEOORT / David BRAGAhttp://www.gcc-groupe.com/
- 56,10 kWhep/m2.an
- 151,00 kWhep/m2.an
Real final energy consumption
111 276,00 kWhef/m2.an
Thanks to Q-RAD, auxiliary consumption drops by 20%. Heating costs are fully covered. The Q-RAD maintenance is part of the investment (the Q-RAD will be replaced every 3 years), a package was also kept for the ECS balloons and the CTAs.
- Other hot water system
- No cooling system
- Single flow
- Other, specify
- 3 852,00 m2
- 38,00 %
- 2 200,00
Génie climatique, électricité / Chauffage, eau chaude
Designed by the company Qarnot Computing, the Qrads are radiators-computers, using the heat released by the cores of processors carrying out calculations to heat homes and offices. Thanks to this intelligent heating system, the fatal energy produced is free for its users. The heating solution offered by these computers significantly reduces the carbon footprint of computer calculations.
The joint desire of the Department and Gironde Habitat to offer low-cost heating for users and which is respectful of the environment has led us to this energy solution that are the Q-RAD. This solution was enthusiastically received by all project stakeholders as well as building users. This heating makes it possible to fight effectively against fuel poverty while adapting to current environmental issues. True technical innovation in the energy field, we are happy to have been able to set up this system, the world's first in the design of a building.
Concrete made from recycled aggregates
Gros œuvre / Structure, maçonnerie, façade
Aggneo® Bâtiment offers, through its network of concrete plants, a range of concretes produced with recycled aggregates for all types of applications. Aggregates are collected through rigorous control of inert waste and mastery of specific recycling techniques. The waste used is concretes, bricks, tiles and ceramics that do not contain dangerous substances, earth and pebbles, non-recyclable glass, bituminous mixtures without tar or asbestos.
Recycled aggregate concrete has been validated by project stakeholders, on-site workers and building users, who have been able to feel like responsible actors participating in the flow of a local circular economy. In addition, this concrete is a quality product that was completely adapted to the use of the project. It seemed interesting to all, that this product could advance the recycling sector towards a more responsible concrete, knowing that it is one of the raw materials most used in the construction of architectural projects.
Mineral wool of glass
01 41 27 90 60https://www.knaufinsulation.fr/
Second œuvre / Cloisons, isolation
Knaufinsultation mineral glass wools are products that use up to 80% recycled glass. This material is very resistant over time thanks to a very specific binder: ECOSE®Technology, a binder based on renewable materials.
Thanks to the structure of its entangled glass fibers and the immobile air trapped in its pores, the glass wool has a high insulating power with a minimum of material. This makes it a lightweight insulating product with thermal performance ranging from 0.030 W / (m.K) to 0.040 W / (m.K), certified by ACERMI.
Its composition based on recycled glass and sand gives the mineral wool of non-surfaced glass (bare) size advantages: it does not fuel the fire, does not spread the flames and does not release toxic fumes. Glass wool is certified Euroclasse A1, the highest certification, improves the fire resistance of buildings. The elastic structure of mineral glass wool ensures a reduction or absorption of sound and improves the sound quality from one room to another. Naturally non-hygroscopic, glass wool does not absorb moisture from the air.
Glass wool is labeled A +, the highest classification of health labeling indicating the level of emissions of volatile substances. It is also certified EUCEB and EUROFINS, guaranteeing that it does not present a danger to health.
This glass mineral wool has the advantage of offering very good technical performances praised by the users of the building. Being flexible and manageable, the insertion of this insulating product in prefabricated wood frame walls by the ARBONIS company has been made easier. Beyond its technical performance, this material has excellent results in the measurement of VOC emissions and thus ensures indoor air quality optimized for building users.
+33 (0)1 86 76 11 17https://www.autodesk.fr/
Construction and exploitation costs
- 1 140 000,00 €
- 825 614 €
- 10 510 000 €
- 396 097 €
Indoor Air quality
Life Cycle Analysis
Reasons for participating in the competition(s)
- Energy efficiency through efficient insulation and use of connected radiators Q-RAD: clean, free energy, using the heat generated by cores of processors performing calculations for heating homes and offices (energy fatal).
- Indoor air quality through air purifiers, combined with natural ventilation and CO2 detectors.
- Own site
- Concerted project
- Wood frame and recycled concrete
- Water collectors & roof tanks: EP recovery for watering
- Shared planters
- Façades and green roof R + 2
- Optimal thermal and sound insulation (glass wool in recycled glass and vegetable binder, with high thermal performance)
- Habitat & Environment Certification
- Building monitoring via the SYMBIOSE application