URMA de Bruay / Saint-Saulve

Last modified by the author on 18/06/2018 - 08:30
  • Building Type : School, college, university
  • Construction Year : 2018
  • Delivery year : 2018
  • Address 1 - street : 59880 SAINT-SAULVE, France
  • Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.

  • Net Floor Area : 9 395 m2
  • Construction/refurbishment cost : 21 830 000 €
  • Number of Pupil : 1 300 Pupil
  • Cost/m2 : 2323.58 €/m2
  • Primary energy need
    13.1 kWhep/m2.an
    (Calculation method : RT 2012 )
Energy consumption
Economical buildingBuilding
< 50A
51 à 90B
91 à 150C
151 à 230D
231 à 330E
331 à 450F
> 450G
Energy-intensive building

The building is home to 1300 students in food and bodycare professions. The floors develop a useful surface around 9,000 m² distributed in two wings flanking a central courtyard:

  • On the street side, the reception wing, of general and scientific education: The construction integrates the soft natural environmental technologies of the site with the will to be applied pedagogical support and lived of the sobriety for the energy transition. A permanent display of performance achieved will boost communication. The processes used use simple technologies at very low pressures and temperatures, the first maintenance of which can be ensured within the establishment.
  • On the courtyard side, the wing of laboratories and technical vocational training workshops.

The architectural philosophy developed is to demonstrate the perfect synergy between the indoor air quality of the premises and high energy performance.

Sustainable development approach of the project owner

Since late 2013, the Regional Council of Nord Pas de Calais, now Hauts de France, has engaged with the Chamber of Commerce and Industry (CCI) in a voluntarist approach called REV3, which aims to support the regional transition to a Sustainable Development, with the aim of positioning the Haut-de-France region as the French locomotive of the "Third Industrial Revolution". URMA de Bruay / Saint-Saulve is one of the buildings labeled "REV3" as a demonstrator of this approach.

Architectural description

The program is divided into two building blocks connected by a covered walkway: A tertiary building with street (mark A) and a rear building with workshops (mark B).

The project, located on the edge of a wetland, uses all the natural resources of the site. Firstly to reduce thermal needs, an over-insulation of the architectural envelope integrates parieto-dynamic glazing preheating new air (mainly for building A). Two thermal wells participate in the renewal of summer air and winter fresh air temperate premises of building A, provided by activated natural ventilation and its calorie recuperator on stale air. Aero-voltaic sensors and a south-west oriented aeronautical elevation enhance the efficiency of this calorie recuperator by supplementing the inputs.

The deep foundations on piles, made necessary by the nature of the ground, act as sensors by ensuring the first frigories of the cold production line of the workshops of the building B and the cooling of the collective premises of the set A + B. The recovery of calories on greywater contributes to the reduction of general needs. Finally the recovery of rainwater roofing reduces consumption of drinking water.

Building users opinion

Building just delivered, not yet occupants

See more details about this project



    Conseil Regional des Hauts-de-France

    M. LEGROS Jerôme - Tél. +33374277049 - Standard. +33374270000 - [email protected]

Construction Manager

    Graph Architectes - José OCA mandataire

    M. COLLET Jean-Luc - Tél. +33327381020 - [email protected]







Type of market

Global performance contract

Energy consumption

  • 13,10 kWhep/m2.an
  • 71,20 kWhep/m2.an
  • RT 2012

    12.3 KWHEP / M².AN Heating
    3.7 KWEP / M².AN ECS
    13.3 KWHEP / M².AN Lighting
    1.6 KWHEP / M².AN Auxiliary

Real final energy consumption

    8,50 kWhef/m2.an

Envelope performance

  • 0,30 W.m-2.K-1
  • Oversized envelope in ITE with parietodynamic chassis

  • 0,36
  • n50

  • 0,45
  • no users yet

More information

The figures communicated do not concern the workshops (building B), which are not included in the RT 2012 calculation, as they are part of processing.
The difference between total consumption items and overall consumption is explained by the building's renewable energy contributions.


    • Gas boiler
    • Low temperature gas boiler
    • Geothermal heat pump
    • Solar thermal
    • Canadian well
    • Condensing gas boiler
    • Heat pump
    • Solar Thermal
    • Reversible heat pump
    • Geothermal heat pump
    • Floor cooling
    • Canadian well
    • Natural ventilation
    • Canadian well
    • Solar photovoltaic
    • Solar Thermal
    • Heat pump on geothermal pile
    • Heat pump
  • 58,00 %
  • Orientation et compacité optimisées,brise-soleil limitant les surchauffes estivales, étanchéité à l'air et isolation renforcées, rafraîchissement par ventilation naturelle activée sans groupe froid.

Urban environment

  • 20 549,00 m2
  • 28,80 %
  • 8 600,00
  • The project is set up in a rapidly changing area, on the edge of a protected natural area and currently on the fringe of a business park, on the edge of a high traffic road lined with industrial buildings used for commercial purposes. (car dealerships) or small industry. With a structuring project of urban bypass in progress, the establishment of the URMA takes on an increased importance with a role of urban "bridgehead" in size as in alignment for the road which, freed from a part of its traffic by the bypass, will take on a more urban character than it does today. In anticipation of this new function, bike paths and public bus stops have been developed, which are echoed in our project with dedicated bus platforms and equipment for cyclists, serving the smooth travels of this new entrance. These facilities are in line with the philosophy of the project that has rejected the place of the car in the basement to focus on alternative travel and preserve the adjacent wetland.


    R-Volt - aerovoltaic sensor


    M.Mimaud Laurent - [email protected]


    Génie climatique, électricité / Chauffage, eau chaude

    sensors that seal and generate both electricity and hot air with a higher yield than other products on the market by keeping the PV cells at optimum temperature.

    good acceptance, need to use a service provider in the exercise, between coverage, electricity and ventilation.

    FTA thermo-active foundations

    Géothermie Professionnelle

    M.Jean-Baptiste Bernard - [email protected]


    Génie climatique, électricité / Chauffage, eau chaude

    thermo-active foundation system

    difficulty of integration with conventional heating / cooling systems - technical implementation.

    Static extractors Ventilation Natural Activated VNA


    M.Lucet Alexandre - [email protected]


    Génie climatique, électricité / Ventilation, rafraîchissement

    Static extractors ensuring a natural draft on the Natural Ventilation ducts Activated

    good acceptance - needed debugging on batch interfaces.

    Parieto-dynamic ENR windows

    Roche France - Ridoret

    M.Jean-Baptiste Ridoret - [email protected]


    Second œuvre / Menuiseries extérieures

    Parieto-dynamic breathable triple glazing chassis

    good acceptance
    - arises like a classic chassis
    - pay attention to the dust on site, sealing of the necessary air inlets and dedusting of the internal air space during the site delivery phase.

    ERS - wasteful calories recovery on wastewater


    M.Poupel Gregory - [email protected]


    Génie climatique, électricité / Chauffage, eau chaude

    heat recovery system on gray unloaded wastewater through an insulated buffer tank and by means of a heat pump.

    good acceptance
    - take care of the clutter of the system and the heating / plumber interface

Construction and exploitation costs

  • 2 486 600,00
  • 2 440 000
  • 21 830 000
  • 500 000

Water management

    The project integrates a rainwater collection tank of 250 m3 supplying all the toilets of the operation by a separate network and covering the total water needs of sanitary facilities for the 1300 students and site staff.

Indoor Air quality

    The exhaust air extraction uses the same process, by induced air, as the activation of the thermal wells described below. Each extraction duct, in flat duct to optimize congestion, is deployed in the central position of the building, to have a very low pressure drop, in order to operate by natural and / or activated thermal engine, depending on the climatic conditions. The low pressures involved ensure a hygienic renewal of the premises, even in case of malfunction or breakage of equipment, to ensure air quality of the premises.

    In the upper part of the extraction regulator, an air / ice water exchanger makes it possible to recover the calories from the stale air.

    It operates in a laminar and turbulent mixed flow in vertical chambers in conductive fins and a peripheral tubular coil, in order to present the optimum of the head losses necessary for the two functions. A final extraction induction, on a variator of uses and resources, makes it possible to overcome the turbulences and to ensure the output flows on the roof. The organization with a vertical tendency of the extraction of stale air, leads to regrouping these conduits in 10 vertical sensors, resulting in 10 collectors expansion. To meet the periods of unoccupancy and energy saving, a stale airflow regulator (in butterfly system or guillotine) regulates the extracutatural to zero flow, excluding specific premises with constant ventilation.


    Thermal activated wells (PTA) in room temperature, building A and B.

    The levels of the water table, close and fluctuating, favorable to the heat exchange with the earth offer an optimum return of the exchanges in bored thermal wells.

    Essentially in building A service, two tracks generate two peripheral circuits. Pumps are cascaded, with a primary heat sink, tempera- ture, in the form of a conventional sewage pipe on the outside and at the bottom of buildings A and B. This brings air into a secondary pipe. , reserved under the building and in line with the elevations of building A.

    Central blowing .

    The outer area is blown into the primary heat sink, (diameter 1600), to overcome the pressure loss, exchange with the earth, and enter the secondary puitsthermic (which we also call thermal gallery, since it is under the building ), at atmospheric pressure.

    Activation by airinduit.

    The temperate exterior is blown into the flat ducts by the induced air effect, a nozzle calibrated according to the required flow rate, and fed by a centralized fan, on a dimmer, regulated according to the indoor and outdoor temperatures.

    Introduction byconvection.

    The heated air of renewal complementary to the pariéto dynamic glazingsarrive in plinth of the veil BA, under the radiators, to finalize the temperature of comfort.

    The renewal air that arrives in the premises is thus always of optimal quality, at constant temperature and hygrometry, without the use of exchangers or filters subject to fouling and through easily cleanable and visitable ducts.

    TIC entre 28.0 et 29.3 pour TICref entre 30.4 et 32.3 sans production mécanique de froid

    As the pitch is located less than 50m from two noisy streets, the constructive choice in terms of exterior joinery has been the implementation of dynamic parietal windows. Dynamic parietal glazing ensures, among other things, optimum acoustic protection, thanks to the vibratory independence of the 3 glazed walls that compose them.

    In terms of interior acoustics, the comfort of the occupants is sought by the implementation of a wood / concrete ceiling in large volumes, associated with acoustic absorbers and the use of soft Flotex-type absorbent floors.

    In smaller volumes, the Flotex is associated with false ceilings whose island configuration maximizes sound absorption.

    Finally, the use of a very low pressure natural assisted ventilation avoids any risk of parasitic noise blowing or air intake that are often deplored in the case of a VMC installation.

GHG emissions

  • 2,00 KgCO2/m2/an
  • RT2012 calculation

  • 60,00 année(s)

Life Cycle Analysis

    The project incorporates 730m² of wood-concrete floors, leaving the wood soffit and the wooden beams supporting the concrete slab visible in the large volumes of the operation: refectory, multipurpose room, meeting rooms and resource center. This presence of a natural material, visible on a daily basis for apprentices, has a strong educational value beyond its ecological value.

    The technical galleries supporting aerovoltaic solar collectors on the R + 1 and R + 3 roofs are made of wood framing, a technique that consumes less energy than conventional wet construction methods.

Reasons for participating in the competition(s)

  • Control of the interior comfort by a natural ventilation activated very low pressures.
  • Insertion of low temperature solar collectors by windows and solar cladding, then high temperature aerovoltaic roof.
  • Recovery optimization of sensible and latent calories.
  • Climatic well activated in temperate tertiary premises.
  • Piles in thermoactive foundations for heating and direct cooling.
  • Enhanced recovery of fatal calories from greywater.

Building candidate in the category

Santé & Confort

Santé & Confort

Coup de Cœur des Internautes

Coup de Cœur des Internautes

Prix des Etudiants

Prix des Etudiants

Green Solutions Awards 2018 - Bâtiments

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Jean Luc Collet

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Green Solutions Awards 2018 - Bâtiments