Rennes inhabited wall

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Last modified by the author on 04/07/2022 - 10:12
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New Construction

  • Building Type : Other building
  • Construction Year : 2018
  • Delivery year : 2019
  • Address 1 - street : 3 Rue Gisèle Freund, ZAC Claude BERNARD/Alexandre DUVAL 35000 RENNES, France
  • Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.
  • Net Floor Area : 180 m2
  • Construction/refurbishment cost : 1 200 000 €
  • Number of none : 8 none
  • Cost/m2 : 6666.67 €/m2
  • Primary energy need
    kWhep/m2.an
    (Calculation method : )
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

Case study proposed and written by Cyril Quinti as part of his Bachelor's degree in Real Estate Management at the Ecole Supérieure des Professions Immobilières (ESPI) in Marseille .

The Inhabited Wall is a sustainable project for several reasons. Let us already mention the choice of building materials: wood in very large part. We find a modular wooden structure , forming the acoustic wall that runs along the SNCF track. On the street side, we find a multitude of dynamic surfaces intended for workshops and premises for young designers. The entire structure also includes other materials (glass panels or cement on the railway side) but also a lot of open spaces on the greenery .

Also, this work is traversed by a network of footbridges and balconies which ensure connections between the district and the banks of the Vilaine. It constitutes "the background" of the Ateliers du Vent, a cultural collective invigorating and popularizing the new culture of this former industrial district abandoned by factories and replaced by centers of cultural activity.

This project is a good example of sustainable construction because its primary purpose was to protect a neighborhood from noise, but the creators went further by giving meaning and identity to the work. Thus, new challenges and urban and civic functions emerge, giving a significant attractiveness to the new district.

Building users opinion

Of the 8 craftsmen occupying the premises, all are really delighted to be present in the wall. It should also be noted that these craftsmen benefit, in addition to the 180 m² of surface area dedicated to their business premises, from 790 m² of VRD (Roads and utilities), representing the various pedestrian paths at the bottom of the structure but also on its roof.
Add to that, the 700 m² of acoustic screen present on the Wall and you get a place conducive to walks and the discovery of the various craft activities present.

If you had to do it again?

A new project inspired by the Inhabited Wall will soon see the light of day a few steps from rue Gisèle Freund. Indeed, a construction project concerning the construction of housing but also a new inhabited wall is planned by 2025. This project is based on the principles of the Positive Energy and Carbon Reduction label reference system.

See more details about this project

 https://lebunetel-architectes.com/?q=en/node/146

Photo credit

Lebunetel Architects

Contractor

Construction Manager

Stakeholders

Contracting method

Public Private Partnership

More information

The inhabited wall being initially a work intended to reduce the noise caused by the railway, the premises located on the ground floor are therefore not subject to a DPE. It is for this reason that we cannot provide energy consumption for this building.

Systems

    • Electric radiator
    • Individual electric boiler
    • No cooling system
    • Double flow
    • No renewable energy systems

    This project having been an initiative of public institutions in Rennes, the budget had to be subject to various restrictions. Thus, the choice of HVAC equipment was limited to this type of installation due to a lack of funding.

Urban environment

    This building, inspired by inhabited Italian bridges, was designed to become the catalyst for an entire district, where users can come for a walk and meet new people, but also discoveries such as the observation point located on the roof or even the various creative craftsmen working in the Wall.

    This innovative work, until now the only wall of this type in France, has been able to convince and create emulators since a second wall of the same type is under construction further in the same district. Thus, the ZAC Bernard - Duval is in the process of becoming a place of architectural but also social innovation. Served by transport lines A and B, it could well attract a population in search of renewal, concerned about climate issues and seeking to take advantage of the many green spaces then absent from this area.

    This is how the city of Rennes was awarded, on November 16, 2021, the Urban Challenge prize, public spaces category, awarded on the occasion of the Urban Projects Forum.

Construction and exploitation costs

  • 1 200 000 €

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 materials and solutions wood building third place
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Cyril QUINTI

Ambassadeur et étudiant

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