Stakeholders

Other consultancy agency

SYMOE
Victor Jumez
BE ENVIRONMENT

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Construction company

Rabot Dutilleul Construction
Thomas Poughon
Project director

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Designer

Boyeldieu Dehaene Architectes

Contracting method

Other methods

 Conception Realisation

Owner approach of sustainability

The sustainable development approach Rabot Dutilleul Construction is in line with that of the group Rabot Dutilleul. All operations we work on, are eco-designed with an AFNOR-certified ecodesign tool.
Here the REEFLEX residence : a living place designed to educate its inoccupants :
→ The architectural choices are explicit: differentiation of facades after a bioclimatic thoughtful approach between AMO and architects
→ The measuring equipment and support to track behavior in favor of the environment (see Reeflex website)

Architectural description

The architectural peculiarity and innovation lie in the simplicity of the design and the fact that the project was designed as an educational tool. Absence of complex envelope elements allows a compacity that serves both thermal performance and maintenance as well as the aesthetics of the project.

If you had to do it again?

Rabot Dutilleul Construction builds and designs such buildings every day with the goal to contribute improving territories as much as possible. Improvement in the meaning of 3 sustainable development pillars.
Especially in the Nord Pas de Calais region, the will to go further in the performance of Third Industrial Revolution: Renewable energies production and storage onsite, circular economy for the structural work.

Energy consumption

• Primary energy need : 57 kWhep/m².an
• Primary energy need for standard building : 94 kWhep/m².an

RT 2012

• Final Energy : 53 kWhef/m².an
Breakdown for energy consumption :

Heating: 19.2 kwhep / m² / year
Cooling: 0 kwhep / m² / year
Hot water: 30.5 kwhep / m² / year
Lighting 3.2 kwhep / m² / year
Auxiliaries 0.6 kwhep / m² / year
Ventilation 5.1 kwhep / m² / year

Envelope performance

• Envelope U-Value : 1 W.m^-2.K^-1
More information :

Compositions of walls
Walls with external insulation :
16cm-thick concrete panel with external TH39 complement (11cm; foamed polystyrene) R ≥ 2,82 [m².K/W]

Printd concrete wall with external insulation (only some parts of the groundfloor) :
18cm-thick concrete panel with external TH39 complement (11cm; foamed polystyrene) and 7cm-thick printed concrete R ≥ 2,82 [m².K/W]

Printed concrete wall with internal insulation (only in some parts of the groundfloor) :
7cm-thick printed concrete wall, 18cm-thick concrete panel with 11cm-thick internal TH39 complement (foamed polystyrene). R ≥ 2,82 [m².K/W]

Inner walls in non-heated rooms
17cm-thick concrete panel with 8cm-thick TH34 complement (Calibel type or equivalent). R ≥ 2,35 [m².K/W]

Low floor and low floor on terrace :
20cm-thick reinforced concrete slab with 8cm-thick rigid TH34 insulation (foamed polystyrene). R ≥ 2,35 [m².K/W]

Low floor in non-heated rooms or on the outside:
20cm-thick reinforced concrete slab with 15cm-thick TH36 insulation under the slab (FibraXtherm type or equivalent). R ≥ 4,17 [m².K/W]

Common roof
20cm-thick reinforced concrete slab with 22cm-thick rigid TH34 external insulation (foamed polystyrene). R ≥ 6,47 [m².K/W]

Steel trough roof (only on groundfloor)
Steel trough with 22cm-thick mineral wool external insulation TH37 R ≥ 5,95 [m².K/W]

Menuiseries aluminium à rupteurs de ponts thermiques intégrant un double vitrage (4/16/4 à remplissage Argon à 90%) pour les façades rideaux du rez de chaussée Uw = 1,6 [W/m².K]

Double-glazed PVC joinery (4/16/4 Argon-filled 90%) and PVC roller shutters according to the architect's blueprints (in all bedrooms).
Uw = 1,4 [W/m².K]
U (roller shutters casings) = 2 [W/m².K]

I4

• Air Tightness Value : 1

Systems

Heating system :
• Urban network
• Water radiator
Hot water system :
• Urban network
Cooling system :
• No cooling system
Ventilation system :
• humidity sensitive Air Handling Unit (hygro A
Renewable systems :
• No renewable energy systems

GHG emissions

• GHG in use : 21 KgCO₂/m²/an

Life Cycle Analysis

The openwork wood cladding used on the international residence and the childcare center is made of retified poplar. Traditionnally very putrescible, poplar transforms into a very suitable essence for cladding, once retified. The wood use din this building is healthy, treated against fungus and insects. It complies with CE, NF, FSC, PEFC, CTB.

https://www.construction21.org/france/data/sources/users/4713/lmh010rproreeflexnote-environnementalesymoe.doc

Indoor Air quality

Aqueous solvent-free paints were systematically used with heavy-metal-free mineral pigments. European Ecolabel was demanded, except in case it was impossible for the type of paint. Values ​​2010 European Directive 2004/42 / EC 4 on the limitation of VOC (Volatile Organic Compounds) are consistently met.

We banned even labeled:
- The products containing more than 2.5% of organic solvent and / or a VOC (volatile organic compounds) greater than 1.5 g / l of product.
- Products containing pigments based on heavy metals (lead, cadmium, chromium).
- Products containing glycol ethers classified as reprotoxic class II.

Floor coverings:
The falls have been recovered and stored in big bags and collected by the supplier specifically with recovery certificate. PVC flooring
proposed must contain a minimum of 25% recycled material. Other types of soils were subjected to validation E. VOC and formaldehyde emission rate of these products are known and communicated to BE HQE. Flooring manufacturing factory certified ISO 14001.

Indeed, for the housing of the residence, the floor is PVC-type category UP4 (recycled and natural) with zero tolerance vis-à-vis the emissions of volatile organic compounds. For commonplaces (movements, in living areas, ...), the majority of soil is tiled so no VOC emissions.

"Our childcare center: a healthy space, a space of life"

The coating of the crib will be without emission of volatile organic compounds and artificial green spaces are antibacterial certified to ensure good health of children who occupy it. These supports are specially designed for use in a nursery. Artificial grass is fire resistant, tear and easy to clean.

The murals are also certified VOC.

Product

SOLEAL
TECHNAL
Resp commercial

Finishing work / Exterior joinery - Doors and Windows

Joinery aluminum with thermal breakers incorporating double glazing (4/16/4 filled to 90% Argon) for curtain walls on the ground floor Uw = 1.6 [W / m²K]

Residence recognized for the quality of light

https://www.construction21.org/france/data/sources/users/4713/12-chassisaluminium.doc

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Poplar wood siding openwork retified
Retiwood
contact commercial

Structural work / Structure - Masonry - Facade

Elegant and designed, openwork wood cladding permits various effects. Retification allows for Poplar, traditionally highly putrescible, to become a perfectly suitable essence for cladding. RETIwood Poplar, like other essences, is the subject of a specific supply mainly French.

No problem

https://www.construction21.org/france/data/sources/users/4713/4-bardage-peuplier-retifie.doc

Construction and exploitation costs

• Cost of studies : 1 170 000 €
• Total cost of the building : 21 400 000 €

Urban environment

5 minutes walk to the metro; the residence is located at the heart of the Lille University Campus.

Land plot area

28 150 m²

Built-up area

4 300 %

Green space

20 600

Parking spaces

82 outside parking lots
810 m² theoretical bike space. Metro and bike sharing stations nearby.

Building Environmental Quality

• indoor air quality and health
• works (including waste management)
• acoustics
• water management
• products and materials