High school Colbert de Lorient - Buildings B and C
Renovation
- Building Type : School, college, university
- Construction Year : 2015
- Delivery year : 2015
- Address 1 - street : 117 Boulevard Léon Blum 56100 LORIENT, France
- Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.
- Net Floor Area : 6 060 m2
- Construction/refurbishment cost : 2 891 000 €
- Number of Pupil : 1 200 Pupil
- Cost/m2 : 477.06 €/m2
-
Primary energy need
74 kWhep/m2.an
(Calculation method : Other )
Educational buildings dating from 1959, renovated thermally by implementing prefabricated wooden panel frame for external insulation. Insulation, rainscreen, joinery and part of the external coating are assembled before the installation of wooden panel frame. Mechanical ventilation of interiors is installed in parallel.
- Intervention in an occupied high school. Noisy works concentrated during school holidays.
- High speed of execution : 6000 m² of floor area renovated in 10 months
- Air permeability of the building divided by three.
- Heat demand of the building divided by three.
- Summer discomfort reduced.
- Improvement of visual and acoustic comfort.
Sustainable development approach of the project owner
The project owner is Brittany Region, which has set up an Eco-referencial system for schools giving them a general framework of sustainable development. On this particular project, the objectives were:the reduction of buildings' energy needs (class B and - 40% of primary energy consumption)
indoor air quality (low emission paintings and installation of mechanical ventilation )
reducing the carbon footprint through the use of wood
Architectural description
Monochrome and monolithic treatment of floors in black lacquered siding and recreational playgrounds surface in douglas siding. The use of prefabricated wooden coffers was considered from the competition to address the issue of the occupied site and to incorporate a bio-based material, renewable and carbon sinks. Sun protection is threefold:solar control glazing 70/40 on classes exposed southeast,
black slatted panel forming external shading with horizontal blades
Clear interior screen blinds for the management of glare
Building users opinion
Satisfaction of the high school teams.
See more details about this project
Stakeholders
Thermal consultancy agency
EGIS
0299857039
http://www.egis.fr/activites/batimentsBET TCE
Designer
ANTHRACITE ARCHITECTURE
0299676221
http://www.anthracite-architecture.comCompany
BOUYGUES BATIMENT GRAND OUEST
02 78 62 28 40
http://www.bouygues-batiment-grand-ouest.fr/Type of market
Global performance contract
Energy consumption
- 74,00 kWhep/m2.an
- 90,00 kWhep/m2.an
- 161,00 kWhep/m2.an
Real final energy consumption
62,00 kWhef/m2.an
Envelope performance
- 0,89 W.m-2.K-1
- 1,00
Systems
- Gas boiler
- Gas boiler
- No cooling system
- Single flow
- No renewable energy systems
Urban environment
Product
Delta Maxx More
DOERKEN
http://www.doerken.de/bvf-fr/Gros œuvre / Structure, maçonnerie, façade
PET fleece with PU coating
The rain screen is used to achieve the airtightness of the facade.
Comfort
GHG emissions
- 13,00 KgCO2/m2/an
Life Cycle Analysis
Reasons for participating in the competition(s)
- Intervention in an occupied high school. Noisy works concentrated during school holidays.
- High speed of execution : 6000 m² of floor area renovated in 10 months
- Air permeability of the building divided by three.
- Heat demand of the building divided by three.
- Summer discomfort reduced.
- Improvement of visual and acoustic comfort.
Building candidate in the category
Rénovation énergétique
Yoann RICHARD
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