Rabot Dutilleul Construction Headquarters

Last modified by the author on 02/09/2016 - 17:02
  • Building Type : Office building < 28m
  • Construction Year : 2015
  • Delivery year : 2016
  • Address 1 - street : 10 avenue de Flandres 59290 WASQUEHAL, France
  • Climate zone : [Cfc] Marine Cool Winter & summer- Mild with no dry season.

  • Net Floor Area : 4 044 m2
  • Construction/refurbishment cost : 1 500 000 €
  • Number of Work station : 250 Work station
  • Cost/m2 : 370.92 €/m2

Certifications :

  • Primary energy need
    68 kWhep/m2.an
    (Calculation method : RT existant )
Energy consumption
Economical buildingBuilding
< 50A
51 à 90B
91 à 150C
151 à 230D
231 à 330E
331 à 450F
> 450G
Energy-intensive building
  • Renovation on an occupied site of the Headquarters of Rabot Dutilleul Construction (4000m2).
  • Issue: Energy and environmental renewal, without distorting "the soul of the building."
  • Themes developed for this renovation: Renovation with obtention of the Effinergie BBC label.
  • Educational: user support during work and after work on energy efficiency
  • Biodiversity: hives, biodiversity roof
  • Mobility: electric car-sharing
  • Comfort: visual comfort acoustic absorbers +
  • Technical natural ventilation through solar chimneys / heated windows
  • Innovations: integration of start-up technology: SMART IMPULSE and EFFIPILOT
  • Creation of a learning path

Sustainable development approach of the project owner

Integrate sustainable development approach on this building by incorporating key environmental themes (energy, biodiversity, mobility, quality and comfort of indoor environments).
Support users during the works (works on an occupied site) and after the work on energy efficiency.

Architectural description

Building renovation without altering the architectural, putting up to date some facades

Building users opinion

Good accompaniment when working with large display and communication on the progress of work. Surveys of employees during and after construction. Perception some noise on some workstations
General sense of pride about the nature of the work and ongoing renovation.

See more details about this project


Contracting method

Other methods

Energy consumption

  • 68,00 kWhep/m2.an
  • 150,00 kWhep/m2.an
  • RT existant

    - Heating: 22.55 kWhEp / m2.year
    - Cooling: 2.97 kWhEp / m2.year
    - Fans: 5.26 kwhef / m2.year
    - Auxiliaries: 1.93 kwhef / m2.year
    - Lighting: 5.51 kwhef / m2.year

  • 175,00 kWhep/m2.an

Real final energy consumption

    38,00 kWhef/m2.an

Envelope performance

  • 0,84 W.m-2.K-1
  • Refurbished facade wall : curtain wall with 10 cm insulationRenovated roof with 10 cm of polyurethane, R = 4.3 m2K / W


  • 1,70

More information

The thermal performance joinery has improved for 53% The renovation of the site reduces by 30% the building losses.


    • Condensing gas boiler
    • Heat pump
    • Water radiator
    • Tape
    • Individual electric boiler
    • Reversible heat pump
    • VRV Syst. (Variable refrigerant Volume)
    • Natural ventilation
    • Single flow
    • Double flow heat exchanger
    • No renewable energy systems

Smart Building

    Effipilot System

Urban environment

  • 9 906,00 m2
  • 22,00 %
  • 6 123,00
  • Building in suburban area with several catering services
    Tram stop Wasquehal Bridge located just opposite the site


    Heated window

    Duthoit Menuiseries

    38 Rue Pasteur 59623 Houplin-Ancoisne 03 20 90 10 25


    Second œuvre / Menuiseries extérieures

    A layer of metallic microparticles invisible to the naked eye is deposited on the inner surface of the glass and serves as low-temperature heating resistor (20 to 45 ° C) allowing:
    - To eliminate the feeling of cold walls
    - To have only one side of the heating pane (the other part of the glazing, outside stays cool).

    It's nice not to feel the effect of cold walls: these are the surfaces poorly insulated a building, responsible for a cold radiation, heat loss and discomfort.

    Biodiversity roof


    10 bis rue Bisson 75020 Paris


    Improved acoustic comfort thanks to absorbers in office spaceImproved noise insulation to achieve a weakening of 30 decibels between officesAudit acoustic measurements at the end of work



    12 rue Barthélémy Danjou Bât A 92100 Boulogne-Billancourt 01 78 16 45 70


    Ubeeqo provides a car only when you need it: self-service car rental or traditional chauffeur-driven vehicle;


    Bee City

    170 allée de l'Ecopark 59118 Wambrechies - France


    There are 3 hives on the site.Local beekeeper + involvement of colleagues in the process

    We act to protect bees and biodiversity.

    Solar chimney


    Jérémy AGAR


    Génie climatique, électricité / Ventilation, rafraîchissement

    Creating an air current between the opening of the window of the inclined curtain wall and a hole in the roof that extends through a steel tube, painted black.Natural convection movement created and amplified by the introduction of year-end aspirotor fireplace that rotates with the wind and / or air movement.

    The solar chimney is an innovative, simple, efficient, sensible and perfectly suited to our building.



    165 avenue de bretagne 59000 Lille 06 05 00 76 77


    Autopilot energy efficiency, it allows a daily and automatic optimization of equipment. The comfort level returned by the user on a web platform. The tool then manages the technical equipment to achieve this comfort, taking into account the actual and future weather conditions, the properties of buildings (permanently performed dynamic thermal simulation); to start the operation of equipment to the optimum.

    Effipilot is a friendly and easy to handle tool.

Construction and exploitation costs

  • 1 500 000

Indoor Air quality

    Dual flow ventilation system extended to the whole building.air conditioning system replaced with solar chimneys in offices that were overheating mostNew ceiling tiles classified E1 (formaldehyde emissions in less than or equal to 0.124 mg / m3)interior paints and glue glass cloth rated A +


    Thermal comfort enhanced by replacement of woodwork and equipmentOptimization of office lighting by choosing appropriate windows and new lighting LEDs

    Simulation Thermique Dynamique réalisée

    Improved acoustic comfort thanks to absorbers in office spaceimproved noise insulation to achieve a weakening of 30 decibels between officesAudit acoustic measurements at the end of work

Reasons for participating in the competition(s)

  • ​Energy: renovation with obtaining Effinergie BBC label .
  • Educational: user support during work and after work on energy efficiency
  • Biodiversity: hives , biodiversity roof
  • Mobility: electric carsharing
  • Comfort: visual comfort acoustic absorbers +
  • Technical natural ventilation through solar chimneys / heated windows
  • Innovations : integration of start- up technology : SMART IMPULSE and EFFIPILOT
  • Creation of a visit educational trail

Building candidate in the category

Energie & Climats Tempérés

Energie & Climats Tempérés

Coup de Cœur des Internautes

Coup de Cœur des Internautes

Green Solutions Awards 2017 - Bâtiments

Share :
Author of the page

Other case studies



Green Solutions Awards 2017 - Bâtiments

Green Building Solutions Awards 2016