Apprentice Training Center Moulin Rabaud
Last modified by the author on 16/06/2018 - 19:08
Extension + refurbishment
- Building Type : School, college, university
- Construction Year : 1974
- Delivery year : 2017
- Address 1 - street : 87000 LIMOGES, France
- Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.
- Net Floor Area : 3 300 m2
- Construction/refurbishment cost : 1 700 000 €
- Number of Pupil : 700 Pupil
- Cost/m2 : 515.15 €/m2
Certifications :
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Primary energy need
80 kWhep/m2.an
(Calculation method : RT existant )
Overall rehabilitation: thermal, indoor and outdoor circulation, creation of convivial spaces, compliance with PMR standards.
The approach emphasizes both:
- the environmental performance of the project, ( beyond the BBC Renovation objective without forgetting the treatment of ventilation and airtightness, essential for the sustainability of the building and the comfort of its users)
- high speed and quality of implementation,
- an architectural requalification of the renovated buildings and the site, contributing to the enhancement of the image of the CFA, (creation of a glass roof in the heart of the building, new arrangement of interior circulations for the accessibility of the whole, landscaping of surroundings)
Thermal performance of the envelope:
- before work: 257 kWh / m².shab
- after work: 50 kwh / m² / shab (factor 5)
Sustainable development approach of the project owner
Request from the building owner: Reduce the energy consumption of existing buildings, improve reception areas, upgrade the image of the CFA and bring accessibility standards to the building.
The thermal approach proposed by the project management, rather than limiting itself to the regulatory calculation RT and a search for labeling, was more global: the Fiabitat thermal design office, through its tool Fiabiscope, made a multi-criteria analysis, which is both more precise and closer to reality on the thermal aspect: dynamic thermal simulation giving real heating needs zone by zone, and wider on the environmental impact of the project: greenhouse gas emissions greenhouse, nonrenewable primary energy, consumed gray energy, operating cost.Precisions on the Fiabiscope approach: https://www.fiabitat.com/thermiques- studies / le-fiabiscope/ See the attached thermal study for the results.
Architectural description
Two existing buildings from 1974 with prefabricated concrete facades on 2 levels, compact, with rooftop terraces, column-beam structure, which allow economical and effective solutions: external insulation in prefabricated wood panels (effective treatment of thermal bridges and low incidence on interior spaces, thus reduced construction nuisances).
In summary, the approach emphasizes both the environmental performance of the project, a high speed and quality of implementation, and an architectural requalification of renovated buildings. The project plans to go beyond the BBC Rénovation objective, to reduce the environmental impact of the project in a more global way: reduction of GHG emissions, low energy gray materials, sustainability and recycling at the end of life, without forget the treatment of ventilation and airtightness, essential for the durability of the building and the comfort of its users.
Building users opinion
very positive, real added value in terms of comfort, light, fluidity of circulation, conviviality of spaces
If you had to do it again?
Regret not having been able to use the cellulose insufflated as expected as insulation, because of fire standards in renovation
See more details about this project
Contractor
Construction Manager
Stakeholders
Thermal consultancy agency
FIABITAT CONCEPT
Frederic LOYAU : [email protected]
http://www.fiabitat.comthermal study and dynamic thermal simulation
Contracting method
Separate batches
Type of market
Global performance contract
Marche public loi MAPAEnergy consumption
- 80,00 kWhep/m2.an
- 350,00 kWhep/m2.an
- 355,00 kWhep/m2.an
Real final energy consumption
49,16 kWhef/m2.an
Envelope performance
- 2,31
More information
Calculation by the PLEIADES COMFIE software in dynamic thermal simulation
Systems
- Condensing gas boiler
- Gas boiler
- No cooling system
- Single flow
- No renewable energy systems
Urban environment
- 20 000,00 m2
- 13,00 %
- 18 500,00
Product
Exterior joinery Guillaumie
Guillaumie
http://guillaumie.comFinishing work / Exterior joinery - Doors and Windows
Exterior carpentry Douglas Limousin made on site. Wood or wood-aluminum
Very good acceptance
Construction and exploitation costs
- 119 500 €
Comfort
GHG emissions
- 9,00 KgCO2/m2/an
- 69,60 KgCO2 /m2
Life Cycle Analysis
Reasons for participating in the competition(s)
Dispositifs énergétiques et techniques :
- ITE (sur béton préfabriqué existant) en panneaux ossature Douglas du Limousin préfabriqués, remplissage laine de roche. Parement: façades sud en bardage en douglas du Limousin (traité avec un saturateur gris pour anticiper le vieillissement) / façades nord en béton fibré (teinté dans la masse)
- ITE des pignons en laine de roche, enduit chaux
- Menuiseries bois-aluminium en Douglas du Limousin, stores de protection solaire
- Renforcement de l'isolation des toitures terrasses, nouvelle membrane EPDM et gravier
- Aménagement d'une terrasse accessible en platelage bois sur le toit
- Création d'une verrière, centre névralgique du projet à la convergence des flux, et espace de convivialité, avec régulation automatisée du climat intérieur.
- Création d'un circuit de ventilation par insufflation avec préchauffage.
- Nouveau circuit de chauffage
- réaménagement des espaces d’accueil
- décloisonnement de certains espaces dans l'administration, nouveaux sols caoutchouc et peintures intérieures (circulations, bureau, salles de cours)
- aménagement des cheminements piétons extérieurs