Extension + refurbishment

  • Building Type : Office building < 28m
  • Construction Year : 1947
  • Delivery year : 2021
  • Address 1 - street : 7 rue Antoine Bourdelle 75015 PARIS, France
  • Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.

  • Net Floor Area : 4 631 m2
  • Construction/refurbishment cost : 6 547 000 €
  • Number of Work station : 200 Work station
  • Cost/m2 : 1413.73 €/m2

Proposed by :

  • Primary energy need
    99.85 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

Close to Montparnasse train station, this building was built by the ancestor of the EDF company, the "Compagnie de Distribution d'Electricité Parisienne" (CPDE). It has always been dedicated to the management of Parisian public lighting.
Designed in 1938 by the architect Urbain Cassan, it was originally supposed to be twice as large. Only half of the program was built! Combined with the pre-brutalist architecture of the exposed concrete structure, its accidental asymmetry gives its facades an elegance that is as austere as it is atypical.

The renovation of this office and logistics building in a circular economy includes the creation of an agricultural greenhouse on the roof. The construction cycle allowed the reuse of deposits from the renovation site in the extension project. Thus the exterior joinery making up the existing running strips was reused to form the new openings of the agricultural greenhouse.

Agricultural greenhouse reuse

More broadly, the renovation project involves an impact reduction approach by promoting reuse, the use of recycled, sustainable materials, and refined and transformable furnishing solutions.


If you had to do it again?

In the private market, the logic could lead to involving the company upstream to carry out more "test" removals and validate a reuse process. The same goes for the technical controller, whose conventional involvement can sometimes lead to impasses during construction. Preliminary tests should be reinforced in the same way.

See more details about this project

 https://www.siarchitectes.com/portfolio/eco-bureaux

Photo credit

Credits: Si Architectes - Damien Boboc & Florian Bosc Malavergne
Except video of the assembly of the greenhouse, credit: Serres Anciennes - Guillaume Durost

Contractor

    EVESA

    Frederic GALLOO

Construction Manager

Stakeholders






    Company

    BOUYGUES ENERGIES SERVICES

    Alain CASULE


    Company

    SITCF

    Anthony DECAMPOS


    Company

    ENERGIES SB

    Philippe HOCHART



    Company

    Bouygues Energies Services

    Kevin Dy

Type of market

Design and implementation

Energy consumption

  • 99,85 kWhep/m2.an
  • 50,00 kWhep/m2.an
  • RT 2012

  • 250,70 kWhep/m2.an

Systems

    • Gas boiler
    • Individual electric boiler
    • No cooling system
    • Double flow heat exchanger
    • Solar photovoltaic
  • 3,08 %
  • The technical terrace located in R+7 has been equipped with a fleet of 45 photovoltaic panels with a total power of 19.84 kWp. The production is distributed in the building and consumed instantaneously.

Smart Building

    The BMS installed in the building contains the following information:
    - Monitoring of electricity consumption by floor ;
    - Monitoring of water consumption by floor ;
    - Weather monitoring ;
    - Monitoring of boiler production ;
    - CTA operating status.

Urban environment

    In the dense urban environment of the Montparnasse district in Paris, the renovation of the building has restored all its brilliance to the facade, decayed by time, which dialogues again with the other buildings of the 1930s. The agricultural greenhouse installed on the roof is integrated into the shades of gray of traditional zinc roofing with its galvanized steel structure.

Construction and exploitation costs

  • 6 547 000

Reuse : same function or different function

    • Outdoor joineries
    • Floorings
    • Suspended ceilings
    • Electricity
    • Plumbing

    Exterior metal joinery:

    • Openable carpentry making up the running strips of the R+2 level - 43m² - 40 units - in-situ

    False ceilings :

    • Slabs reused in-situ - 980m²
    • Reuse slabs - 1000m² - from another company removal site

    Floors:

    • Parquet floors - 150m² - in-situ
    • Carpet - 30m² - company unused stock

    Exterior floors:

    • Protective gravel for technical flat roofs - 7m3 - in-situ

    Plumbing:

    • PVC tube (EU) - 35ml - company unused stock

    Electricity :

    • Downlight luminaires - 71 units - in-situ
    • LED tiles - 247 units - in-situ
    • Exterior wall lights - 7 units - in-situ
    • Fluorescent tubes - 126 units - POLIX lamps - Maximum Design

Environmental assessment

    Waste : 194 tons of which 94.7 tons were recovered or reused (Tricycle Environnement).

    Asbestos : 30m3 of asbestos waste recycled by inerting (vitrification by Intertam). This is the only way to avoid landfill and to guarantee the safety of the residue. The vitrificate obtained (Cofalit) is used as a road surfacing underlay, but many other uses are being studied.

    Categories Avoided CO2 (kg)  Avoided water consumption (m3) Avoided waste (kg)
    Outdoor facilities 758.87665 7.615624425 1062.454084
    Exterior fittings / Locksmithing - Metalwork 0 0 0
    Carpentry 0 0 0
    Partitions 0 0 0
    Coverage 0 0 0
    Roofing / Exterior fittings 14.322 0.1666455 771.7832388
    Lighting 35654.18594 182.3319846 33899.91834
    Safety lights 0 0 0
    Climatic engineering equipment 0 0 0
    Electrical equipment 0 0 0
    Facades 0 0 0
    False ceilings 9211.653825 94.392628 16385.14013
    False floors 0 0 0
    False ceilings 0 0 0
    Structural work 0 0 0
    Sanitary installations 0 0 0
    Insulation 0 0 0
    Exterior carpentry 5234.175 51.7419 3881.482903
    Interior carpentry 0 0 0
    Furniture 0 0 0
    Paint 0 0 0
    Plumbing 0 0 0
    Floor coverings 990.4555122 26.97398957 605.55344
    Floor and wall coverings 0 0 0
    Wall coverings 0 0 0
    Building security 0 0 0
    Locksmithing - metalwork 0 0 0
    VRD 0 0 0
           
    TOTAL Avoided CO2 (kg)  Avoided water consumption (m3) Avoided waste (kg)
      51863.66893 363.2227721 56606.33214
           
      Km in a small car Nb of rectangular bathtubs
    nb of years of household waste of a French person
      414909 2421 113

     

    Equivalent trajet Paris- Nice 471.0  

     


    The re-use operation saved the equivalent of 414909 kilometers driven by a small car, or 471 trips from Paris to Nice, 2421 rectangular bathtubs filled with water and 113 years of household waste of a French person.

Social economy

    • TRICYCLE ENVIRONMENT: 11 employees in professional integration
    • METISSE LE RELAIS: all company profits are reinvested in the creation of sustainable jobs.

Reasons for participating in the competition(s)

The circular economy renovation approach, jointly supported by the Project Owner and the Project Management on the project, experimentally prefigures the future of rehabilitation. It is part of an optimization of resources specific to the site and the building in terms of functionality, equipment and architecture. It organizes the project according to opportunities related to existing spaces, to demolitions. It favors the use of biosourced, recycled or reused materials. It optimizes the processing and recycling of construction site waste.

Building candidate in the category

Bâtiments tertiaires / prix de la rénovation

Bâtiments tertiaires / prix de la rénovation

Trophées Bâtiments Circulaires 2022
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 building renovation circular economy reuse waste recycling materials and solutions biosourced tertiary building Circular Buildings Trophies 2022

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Author of the page

Florian Bosc Malavergne


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