Student house Marne La Vallée

  • Building Type : School, college, university
  • Construction Year : 2013
  • Delivery year : 2014
  • Address 1 - street : Boulevard Descartes 77420 CHAMPS SUR MARNE, France
  • Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.

  • Net Floor Area : 1 977 m2
  • Construction/refurbishment cost : 4 200 000 €
  • Cost/m2 : 2124.43 €/m2

Certifications :

  • Primary energy need :
    75.1 kWhep/m2.an
    (Calculation method : RT 2005 )
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

This is the reconversion of an old farmhouse in order to install there the House of Students of Paris Est Marne-La-Vallée. The main buildings have been preserved except the East Wing whose condition did not allow the conservation. The reconstructed parts respect the initial morphology of the frame. Conserving these buildings is primarily afford the luxury of large volumes and beautiful frames. The first step consists in taking up the building underpinning work and to cover a unitary roof over the entire length. This unitary unit covers old and new construction, provides light, gives thermal and acoustic comfort. The roof acts as a regulator: it is covered with an expanded aluminum mesh whose geometry allows effective sun protection in summer and let the light penetrate in winter.

It is a tchnical roof under which circulate ventilation network and cable ducts. This principle allows the walls to keep their massiveness without having to rip them again. This takes advantage of their tremendous inertia. Lined with concrete of hemp complex and with lime-hemp coating, walls also act as regulators and allow hygric exchange between inside and outside: the walls breathe.

This lining coverage fits well with the walls and contrasts with the correctness of the roof. Extensible, lime allows the deformations of the frame associated to all these transformations.

In new parts, pumice stone blocks and the use of raw and natural materials complete the structure.

At the time of the «throwaway society», the project is designed as a tool for students capable of evolving with the practices and changes in allocations. The result is a building for a very long time.

Data reliability

3rd part certified

Stakeholders

    Contractor

    Région Ile de France


    Contractor representative

    Icade Promotion

Owner approach of sustainability

LABEL HQE Commercial building

Architectural description

This is the reconversion of an old farmhouse in order to install there the House of Students of Paris Est Marne-La-Vallée. The main buildings have been preserved except the East Wing whose condition did not allow the conservation. The reconstructed parts respect the initial morphology of the frame. Conserving these buildings is primarily afford the luxury of large volumes and beautiful frames. The first step consists in taking up the building underpinning work and to cover a unitary roof over the entire length. This unitary unit covers old and new construction, provides light, gives thermal and acoustic comfort. The roof acts as a regulator: it is covered with an expanded aluminum mesh whose geometry allows effective sun protection in summer and let the light penetrate in winter.
It is a tchnical roof under which circulate ventilation network and cable ducts. This principle allows the walls to keep their massiveness without having to rip them again. This takes advantage of their tremendous inertia. Lined with concrete of hemp complex and with lime-hemp coating, walls also act as regulators and allow hygric exchange between inside and outside: the walls breathe.
This lining coverage fits well with the walls and contrasts with the correctness of the roof. Extensible, lime allows the deformations of the frame associated to all these transformations.

Energy consumption

  • 75 kWhep/m2.an
  • 130 kWhep/m2.an
  • RT 2005

  • 180 kWhep/m2.an

Envelope performance

  • 0 W.m-2.K-1

Systems

    • Condensing gas boiler
    • Individual electric boiler
    • No cooling system
    • Nocturnal Over ventilation
    • Humidity sensitive Air Handling Unit (Hygro B
    • Double flow heat exchanger
    • No renewable energy systems

    Double flow ventilation is reserved to existing large volumes in the way to recover the buildings heat from the roof. The glazing is low-emissivity and fishnet protection of aluminium and solar protections.

Smart Building

    Building thermal management allows the detection of malfunctions in heating networks, ventilation, plumbing and current high/low and record consumption by item.

Life Cycle Analysis

    BCB Trafical hemp concrete and lime-hemp coating, pumice stone type Cogébloc, wood certified Douglas et Mélèze, Tarkett Linoleum

Indoor Air quality

    Insulation and finishing work products improve the quality of indoor air: The hemp concrete and hemp-lime plaster, and partitioned space and suspended ceilings CLINEO type Knauff participates to a decrease of VOC in the building throughout the life cycle.

Health & Comfort

    The light quality has been checked by FLJ calculations by local and according to occupation modes (offices, multifunctional hall, dance hall ...). The summer comfort is ensured by the expanded aluminum mesh which protects the roof of sunlight in the summer period. The buildings are all through and the natural ventilation is optimized.

    Voir RT jointe

    The acoustic comfort target reaches the level « efficient» with an improvement of 3dB: offices have suspended acoustic ceilings on over 75% of surface and 50% for traffic (organic panels from Knauff: sound absorption index balanced, according to NF EN ISO 11654: µW > 1.00) The entire roof is treated with a complex of CIN in ARVAL 323J, with micro-perforated plate plus mineral wool soffit . The use of lime-hemp coating also improves the acoustic comfort inside.

Product

    Hemp concrete

    BCB Tradical

    http://www.bcb-tradical.com/fr-contacts.html

    Finishing work / Partitions, insulation

    Hemp concrete is an insulating building material in the mass. Called sometimes eco-hybride1 (because compound of a plant product and an mineral binder) he is composed of shives (central and wooded parts of the rod of hemp, very light and insulating because of a rich capillary size of 10 μm and 50 μm) and aerial and hydraulic lime. It is an alternative to conventional materials. It finds its place in wide range of construction solutions satisfying the need for energy conservation, the need for sustainable development and the demand for building healthy habitat. This material is used for the construction of buildings labeled «BBC Effinergie», according to RT 2012 thermal regulations in application for all types of construction from January 1, 2013.

    In study phase the building owner accepted this requirement taking into account the reservations of the control office, reservations that were raised due to the production by the PV manufacturer and technical advice in the end phase study.


    Central air handling - EQ Prime

    Flätz woods

    info.fr@flaktwoods.com

    HVAC, électricité / ventilation, cooling

    Simple or integrated air handling unit, energy recovery and advanced control for all types of building equipment. Proposed in 17 sizes on flow ranges from 400 to 32,000 m3 / h. Preconfigured components combining single and double boxes flow records, rotary recovery units or plates, fans, batteries, filters and silencers, integrated in an envelope of various sizes equipped with watertight doors with ergonomic handles. With a permanent magnet motor.
    Digital control system communicating on Web server via open protocol (OPC, BACnet, LonWorks or Modbus). Laying plug and play equipment in technical room or outside.

    xxx


    Roofing ARVAL CIN 323J - System Globalroof

    ARVAL

    france@arcelormittal.com

    Structural work / Carpentry, cover, titghtness

    The GLOBALROOF Acoustic and thermal systems are multi-skin steel roofing solutions. These complexes possess high performance not only thermal insulation but also, if desired, acoustic treatment, both in isolation in absorption. The GLOBALROOF Acoustic and thermal systems can provide a personalized response to the requirements of thermal and acoustic regulations in force. They usually consist of an incorporated inner skin seal support or HACIERBA trays, thermal insulation may include several insulators beds, possible intermediate spacers and a roof profile or membrane sealing.

    xxx


    Cogetherm

    Cogetherm

    cogebloc@wanadoo.fr

    Structural work / Structure - Masonry - Facade

    THE PROCESS COGETHERM, SELF-INSULATION PUMICE STONE BLOCK. It isolates you for life with exemplary consistency. The implementation is done while pumice stone: COGETHERM® blocks, insulating mortar, concrete and all the accessories that are used for installation. The only one to offer a construction with a unique material. Therefore, your building has a very high thermal coefficient. It is the only product that filled up the thermal regulations. Do not fear the shocks, it is safe, completely fireproof: classified M0. Composed of 92% of naturally insulating pumice stone and 8% pure clinker. It does not pollute the manufacture, does not undergo cooking. No addition of polystyrene or other polluting materials. 100% recyclable, it consumes the manufacture 4 to 7 times less energy than other monomurs manufacturers.

    xxx

Construction and exploitation costs

  • 4 200 000

Urban environment

The building is built in the heart of the Campus of the City of Paris Descartes Marne la Vallée. The building promotes the history of the farm and of the Upper House whose influence has marked the territory.

Building Environmental Quality

  • Building flexibility
  • indoor air quality and health
  • works (including waste management)
  • acoustics
  • energy efficiency
  • maintenance
  • integration in the land
  • building process
  • products and materials
​Le bâtiment majoritairement rénové, répond aux exigences THPE 2005. Il est certifié par Certivéa HQE bâtiment tertiaire et répond avant tout aux exigences d’une architecture bioclimatique pour profiter au mieux des apports passifs. En hiver le vitrage 4/16/4 en toiture s’échauffe sous l’effet de la lumière rasante tandis qu’il est protégé des rayons les plus hauts en été par la résille qui assure sa fonction de brise soleil. La lame d’air de + de14cm entre le toit et la résille assure un rafraîchissement naturel de la toiture par convection. Pour autant, cette fonction de brise soleil n’a été prise en compte dans les calculs réglementaire que sous la forme de facteur solaire pour les vitrages alors que la réalité est plus riche. Cette sur toiture cache en même temps toutes les émergences disgracieuses (ventilation primaire,prise d’air neuf et extraction,…).

Les bâtiments existants sont isolés avec du béton de chanvre recouverts d’enduits chaux chanvre (BCB tradical) qui favorisent les échanges hygriques entre intérieur et extérieur tout au long de l’année pour un meilleur confort thermique. L’épaisseur des murs existants est mise à profit pour apporter l’inertie à l’ensemble. Le béton de chanvre est un puits à carbone et améliore sensiblement la qualité de l’air intérieur.

Dans les parties reconstruites l’isolation est faite avec des parpaings de pierre ponce (bloc Cogetherm ) qui nécessitent très peu d’énergie fossile à la transformation.

Sur tous les grands volumes, ces systèmes constructifs permettent d’optimiser le rendement des 2 chaudières à condensation qui sont combinée sà une ventilation double flux avec récupérateur de chaleur. Aucun système de rafraîchissement n’est prévu, à l’exception du fonctionnement en night cooling des centrales de traitement d’air. L’inertie des bâtiments permettant un extraordinaire déphasage.

En complément, la ventilation naturelle est mise en avant par des systèmes d’ouvertures temporisées disposés en toiture sur les pans Nord. Ceux-ci permettent d’extraire la chaleur accumulée en comble par un balayage d’air complémentaire lors des pics de chaleur.

Les charpentes ont été conservées redressées et rénovées in situ avec les pièces de bois issues des parties démolies.

Les menuiseries sont en acier laqué avec rupteurs thermiques pour allier grande fiabilité et performance.

Les produits de second œuvre sont souvent laissés bruts et issus de fournisseurs ayant un engagement élevé en matière de recyclage (Isolant acoustic Organic, cloisons et faux plafond Cleanéo de chez Knauf, sols en linoléum ).

Le calepinage est fait de panneaux entiers pour limiter les chutes.

Le complexe de toiture en complexe de bac acier double peau ainsi que la sur toiture en aluminium brut ont été choisies pour la bonne adéquation entre durée de vie possibilité infinie de recyclage.

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