De Gaulle-Anthonioz middle School: Mediterranean Gold level Building
New Construction
- Building Type : School, college, university
- Construction Year : 2016
- Delivery year : 2017
- Address 1 - street : 143 impasse des Bauquières 83570 CARCèS, France
- Climate zone : [CsC] Interior Mediterranean - Mild & dry summer.
- Net Floor Area : 7 655 m2
- Construction/refurbishment cost : 23 506 343 €
- Number of Pupil : 700 Pupil
- Cost/m2 : 3070.72 €/m2
Proposed by :
Certifications :
-
Primary energy need
29.8 kWhep/m2.an
(Calculation method : RT 2012 )
The Geneviève de Gaulle-Anthonioz middle school in Carcès in Var departement (near Nice) is a new generation establishment, equipment built according to the best standards of energy performance, labeled Mediterranean Sustainable Building Gold and BBC Effinergie. Architectural writing with emphasis on wood, terracotta and raw materials (steel and glass), photovoltaic production, wood-burning boiler, façade sunshades, green roofs, water recovery and reuse, cooling system by geocooling, in other words by geothermal energy ... a wide range of bioclimatic solutions has been used. A very large water retention basin of 2,600 m3 has been built.
Designed by architect Guy Mascherpa, this building with a capacity of 700 students has a 123-seat auditorium with a stage of 63 m2, a kitchen and a dining room that can accommodate more than 300 guests, a large gymnasium. 1,290 m2 and an outdoor sports plateau. The gymnasium, the track and the auditorium have independent access and can be shared with associations outside college hours. Their use is thus maximized.
Contract: Public Private Partnership signed between the Var department and the company COLOGEN. The latter is responsible for the design, construction, financing, maintenance, operation and maintenance of the establishments. The County Council will pay a fee for twenty-five years. This operation makes it possible for the Department to respond to an urgent need, demographic change and to achieve economies of scale.
In order to conduct this public-private partnership with the departmental council of the Var, Eiffage has set up the Eiffage Construction Azur group (agent), Eiffage Energy Systems Mediterranean, Eiffage Energy Thermie Méditerranée, Crystal Sam, and Eiffage TP Méditerranée for the works. Pigna and Senec SMEs also participated in the Carcès project. In fact, 80% of the works, in particular the secondary state bodies, have been subcontracted.
Mascherpa Architects agency designed this college for 700 students with a possible extension to 800.
More information on certification: Mediterranean-level sustainable building gold + obtaining the BBC label Effinergie for college and housing (ie RT2012 -20%, airtightness of networks, buildings, etc.) The Mediterranean sustainable building is a reference system for French environmental quality, created in 2008, which aims to evaluate building construction and rehabilitation projects in a continuous improvement process, through a participatory guarantee system. This design-build project meets ambitious environmental objectives.
The Mediterranean Sustainable Building (BDM) level required Gold requires:
▪ the choice of bio-sourced and local materials;
▪ the reduction of heating needs, GHG emissions and implementation of renewable energies (180 m² of photovoltaic panels placed on the roof), with at least passive buildings;
▪ reduction of water consumption and recovery;
▪ waste management and selective sorting, especially for catering;
▪ biodiversity, green spaces, garden and educational pond;
▪ buildings with quality materials, comfortable and healthy (visual comfort, air quality, hygrometric comfort), with monitoring and controls of summer temperatures and total volatile organic compounds;
* the establishment of a building site with low nuisance.
Sustainable development approach of the project owner
The future middle school had the ambition to be a "twenty-first century school in the countryside". Its construction is deliberately part of a sustainable development approach: bio-sourced materials, mixed wood and gas boiler, rainwater recovery, energy neutrality with 180 m2 of photovoltaic panels, biodiversity compensatory measures. This is the first "green building" for Eiffage Côte d'Azur. As part of its Education competence, the Var Department wanted to improve the reception of middle school students and educational teams. In "Provence Verte", the demographic evolution has led to a rise in enrollment, saturating the capacity of existing colleges. In this regard, the Department of Var has decided to build the new college Geneviève de Gaulle-Anthonioz in Carcès, commissioned since the start of the school year 2017. It has been the subject of special attention regarding respect for biodiversity. The integration of the college on the site meets many environmental objectives (dry stone retaining walls as well as and animal circulation passage way preserved, green roofs, ...) and is also ensured by its colorimetry and its materials. Concrement, Eiffage engaged on the economic aspects and environmental aspects to: • use bio-sourced (and / or local) materials, integrate solutions to reduce heating needs and use renewable energies, • pay particular attention to the water cycle (reduction of consumption, recovery, reuse), • set up waste management, including selective sorting for catering, • promote biodiversity. Optimizing energy performance and hygrothermal comfort for users is a priority in the design of the structure. Given the Mediterranean climate, the notion of "summer comfort" remains one of the bases of the design of buildings and their facilities. Energy needs arise from the following three components:
- to combat the static losses of the building;
- ensure the heating of the hygienic fresh air of the occupants;
- ensure the cooling of fresh air and premises.
The global design developed makes it possible to meet energy consumption by ensuring the new airflow per major occupant that is required without an active air cooling system for the teaching rooms. The reduction of energy needs is first achieved through the bioclimatic design of buildings, including the search for compactness and the treatment of the envelope and facades according to their exposure to prevailing winds and the sun. The control of the solar inputs in summer period is also a determining point of the design of the frame. The solar energy was used for the important needs of production of domestic hot water of the kitchens. To ensure the summer comfort, systems passive are privileged, without resorting to an active system of refreshment for the teaching premises. As fresh ventilation air flows are important, these systems act on the temperature of the premises and especially on the cooling of the fresh air.
Architectural description
The architectural bias for the construction of this establishment can be summed up in three points: - the compactness of the constructions: a built-in underground gym to minimize the mass effect; a general education building in R + 2 closing the northern space - the abundance of natural light, especially in places of circulation and education - the insertion landscape: some roofs will be planted to promote integration in the landscape. All housing is covered with a roof garden. Besides the fact that it helps to remove this body of building, the 50 cm of earth provided on the roof have a very high insulation value and a quality of absorption and rainwater retention, not negligible. The visitor car park is treated as a landscaping element in its own right, covering the storm basin. The high compactness for a fixed functional volume, helps to limit the area of loss of buildings and therefore on the one hand, its heating demand and the other hand the amount of materials to implement to build its envelope. These two points have a direct influence on the building's environmental impact and its cost. In this logic, the main teaching building, comprising more than 80% of the programmatic areas of the college of Carcès, adopts a rectangular shape of very compact. In addition, this college of the 21st century in the countryside of the green Provence offers modern and simple forms in a rich and refined vocabulary and colorimetry. A combination of raw and natural materials (wood, steel and glass) combined with synthetic materials (tinted resin facade panels) combine to give the whole its coherence. A selection of colors taken from the near and far environment, in the history and local tradition is applied to these synthetic materials. The woods are left rough for vertical and horizontal masts and sunshades. They are smoother and clearer for canopies and meadow. The landscaping and the work of the planted roofs complete this palette so that the new equipment expresses its modernity in respect of the locality. "The general education building, part of the auditorium and the basement of the gymnasium were drawn with terracotta siding, there is also a lot of wood. " "The idea is to stay as local as possible in the partnership approach and in the Sustainable Buildings Mediterranean", explains the architect Guy Mascherpa.
Photo credit
Thierry Lavernost / Thierry Beaucap
Contractor
Construction Manager
Stakeholders
Designer
Mascherpa Architectes
Thermal consultancy agency
Oasis
Thermal consultancy agency
Oxania
Others
Eiffage Construction Côte d'Azur
Representative
Others
Eiffage Energie Systèmes Méditerranée
Company
Crystal Sam
Others
Eiffage Infrastructures Méditerranée
Company
PME Vignat et Senec
Contracting method
Public Private Partnership
Energy consumption
- 29,80 kWhep/m2.an
Envelope performance
More information
The primary energy consumption of 29.8 kWhep / m2.year is that of the educational building. This is only 17.4 kWh ep / m² by subtracting the 12 kWhep / m².year of photovoltaic production. As the college consists of three buildings (general education building + gymnasium + half-board), the average CEP is estimated at 24.67 CEP. RT 2012 calculation method
Systems
- Gas boiler
- Wood boiler
- Individual electric boiler
- Others
- Double flow
- Solar photovoltaic
- Wood boiler
Urban environment
- 7 655,00 %
Product
Gymnastics wood frame glued laminated
Rubner (sous traitant d'Eiffage Construction Côte d'Azur) - Cosylva SAS
Rubner construction bois 36 avenue des Frères Montgolfier 69680 Chassieu Tél.: 04 72 79 06 30 - Cosylva SAS Route de Bénévent 23 400 BOURGANEUF 05 55 64 28 28
www.rubner.com ; www.cosylva.comGros œuvre / Charpente, couverture, étanchéité
Resistance class GL24h
Adhesive type according to EN 301: I
Wood species: Douglas fir: Pseudotsuga menziesii
Formaldehyde class: EI
Reaction to fire: class D-s2, do
Durability class according to EN 350-2: 34 / S / S / S
Reduced carbon weight of the building
Some of the woods come from the French forest
Reduced ecological footprint: Lumber and generally biomass products used as building materials are considered carbon sinks. This is a dry sector that avoids the water consumption associated with concrete.
Optimization of implementation: wood is 5 times lighter than concrete and can be used in combination with all other materials. The prefabrication in the factory of wood works, more or less complex, makes it possible to greatly reduce the duration of the building site and to improve the constructive quality of the buildings,
Aestheticism: wood is a visual element that qualifies spaces and participates in the landscape integration of buildings.
Good acceptance after guaranteeing the durability of external works
Sunbreaker glued laminated wood
Rubner (sous traitant d'Eiffage Construction Côte d'Azur) - Cosylva SAS
Rubner construction bois 36 avenue des Frères Montgolfier 69680 Chassieu Tél.: 04 72 79 06 30 - Cosylva SAS Route de Bénévent 23 400 BOURGANEUF 05 55 64 28 28
www.rubner.com ; www.cosylva.comGros œuvre / Structure, maçonnerie, façade
Resistance class GL24h
Adhesive type according to EN 301: I
Wood species: Douglas fir: Pseudotsuga menziesii
Formaldehyde class: EI
Reaction to fire: class D-s2, do
Durability class according to EN 350-2: 34 / S / S / S
Good acceptance after guaranteeing the durability of external works
BPE low carbon concrete
Cemex
Cemex Bétons Sud Est Zone Activité de la Grave, 06510 CARROS
www.cemex.frGros œuvre / Structure, maçonnerie, façade
Use of a cement containing blast furnace slags. Work with the supplier on the provenance of other materials.
Good acceptance.
Water management
Indoor Air quality
Comfort
GHG emissions
- 11,00 KgCO2/m2/an
Life Cycle Analysis
Reasons for participating in the competition(s)
The use of raw and natural materials (wood of the masts and sunshades, steel and glass), associated with materials of cladding (panels of terracotta facades) and coatings, earth tones, rosés earth and stone made it possible to give to this building the level Mediterranean Sustainable Building (MSB) Gold Level.
The establishment is equipped with a wood boiler, and photovoltaic panels that help improve energy performance.
Its design favors biodiversity in view of the strong landscape dimension of the site (green spaces, water management, outdoor spaces ...).
To go with the highlighting of the biodiversity specific to this middle school, the main objective of the landscaping project was to enhance and reinforce the site's natural heritage by integrating it into the educational process.
As such, in compliance with the environmental code and the procedures required for all development projects, the Department of Var, in agreement with the biodiversity services of the DREAL, has taken the necessary measures to protect living species in this natural area, such as Hermann's turtle, the prosperous or the bechstein murine.
Building candidate in the category
Bas Carbone
Prix du public
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