Headquarters of Groupama Paris Val de Loire
Last modified by the author on 19/05/2017 - 10:57
Renovation
- Building Type : Office building < 28m
- Construction Year : 1970
- Delivery year : 2017
- Address 1 - street : 89000 AUXERRE, France
- Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.
- Net Floor Area : 3 579 m2
- Construction/refurbishment cost : 2 565 000 €
- Number of Work station : 150 Work station
- Cost/m2 : 716.68 €/m2
-
Primary energy need
56.4 kWhep/m2.an
(Calculation method : RT existant )
New image and beautiful "overall" performance for this 70s office building where no heavy work had been done since its construction and which presented such discomforts that it became "unusable".
Complete recovery of the insulation of the envelope, its airtightness and thermal bridges.
Development of shared areas on the garden level for training with installation of LED luminaires running on presence and graduation of the luminosity.
Development of co-working spaces on the ground floor with specific acoustic study. Independent spaces mutualisable with the outside wooden terrace.
Release of the R + 2 shelf for tenants and / or co-owners with full accessibility of the site and independent management.
Sustainable development approach of the project owner
1. Make buildings compliant with current regulations. O Accessibility O Fire O Asbestos 2. Bring these buildings delivered in the 1970s (45 years) to the levels of performance, comfort, ease of operation and operating costs of a new building. O Work on their envelopes and facades, heating solutions and evaluate their costs. 3. Provide working conditions consistent with the activities housed in the building (offices, call center, meeting, shop window ...): O Allow for evolutions. O Make this building attractive. O Make new digital solutions possible. 4. Examine the solutions of pooling of spaces and resources. O Flexibility of use. O Savings. 5. Making these buildings valuable to their heritage.Architectural description
New image and beautiful "overall" performance for this 70s office building where no heavy work had been done since its construction and which presented such discomforts that it became "unusable". Complete recovery of the insulation of the envelope, its airtightness and thermal bridges: • Wooden tunnel walls of the existing structure for busy site intervention and encapsulation of asbestos products. Insulation distributed in these 42cm coat walls. • Exterior insulated exterior walls of minimum 20cm, removing all thermal bridges from the existing post / concrete beam structure. • Terracotta shingle finish for resistance, maintenance and the "earth" side for the Cité de l'Agriculture et des services. • Double-breaking aluminum jointed joinery Uf = 1,1 with high-performance double glazing. • Complete renovation of roof terraces with 240mm polyurethane and treatment of acroteres. Then, implementation of "comfort and health" solutions - summer heat - by double-stream ventilation with 2 plants per level and management of bioclimatic facades by solar protection: • Horizontal sunlight breezes on individual management and centralized by sun sensor to avoid summer overheating by wind sensor to wind up the blinds in case of strong wind and hourly programming to secure the building at night. • Vertical and colored vertical sunscreens create masks while animating the facades. Energy performance achieved at the level of a new building: • Factor 5 for consumption on all items, ie 289 to 56.4 kWh / m².an. • Factor 10 for heating consumption, ie 245.8 to 24.9 kWh / m².an. O Decrease by 50% of heating surfaces. Development of shared areas on the garden level for training with installation of LED luminaires running on presence and graduation of the luminosity. Development of co-working spaces on the ground floor with specific acoustic study. Independent spaces mutualisable with the outside wooden terrace. Release of the R + 2 shelf for tenants and / or co-owners with full accessibility of the site and independent management.See more details about this project
Stakeholders
Designer
ATRIA Architectes
Jean-Pierre Bosquet et Annick Worobel; [email protected]
http://www.atria-archi.comArchitect
Thermal consultancy agency
Via Positive
Dusan Novakov; [email protected]
http://www.viapositive.comStudy office Thermal, heating and ventilation
Contractor
Groupama Paris Val de Loire
Alain Boisfard; [email protected]
https://www.groupama.fr/web/pvlManager Regional Logistics Jobs
Manufacturer
Terreal
Lionel GARCIA; [email protected]
http://www.terreal.com/Clay Shingles
Company
Gebat Construction
Georges Miranda et Sébastien Gomes; [email protected]
http://www.gebat-constructions.fr/Outdoor thermal insulation
Company
Vaucouleur SARL
Davis Vaucouleur
http://vaucouleur.sarl.free.fr/Timber frame and cladding
Contracting method
Separate batches
Type of market
Global performance contract
Energy consumption
- 56,40 kWhep/m2.an
- 107,40 kWhep/m2.an
- 289,00 kWhep/m2.an
Real final energy consumption
56,40 kWhef/m2.an
Envelope performance
- 0,60 W.m-2.K-1
- 1,17
Systems
- Gas boiler
- Water radiator
- Individual electric boiler
- VRV Syst. (Variable refrigerant Volume)
- Double flow heat exchanger
- No renewable energy systems
Smart Building
Urban environment
- 7 688,00 m2
- 1 732,00
Product
Zephyr evolution
Terreal
http://www.terreal.com/Structural work / Structure - Masonry - Facade
The oldest building material in the world, terracotta is obtained by the firing of clay. It is this natural raw material that gives it its strengths.
• Economical and lightweight
• Durable and maintenance-free
• Simple and fast rail mounting
• Simple, long-skinned cladding: up to 150 cm
In total agreement with the site "The City of Agriculture and Services"
ASW 75 II
Schüco
Jean-Marc GAUDARD; [email protected]
https://www.schueco.com/web2/frFinishing work / Exterior joinery - Doors and Windows
Aluminum joinery thermal bridge breaker and double glazing - Schuco AWS75.II
Average Uw: 1.3 W / m²K
Ug glazing: 1.0 W / m²K
Insert: 0.04 W / mK
Solar factor: G = 46%
Well accepted
Construction and exploitation costs
- 295 000 €
- 2 565 000 €
Energy bill
- 7 500,00 €
GHG emissions
- 8,00 KgCO2/m2/an
Reasons for participating in the competition(s)
Performance énergétique atteinte du niveau d’un bâtiment neuf :- Facteur 5 pour la consommation tous postes soit de 289 à 56,4 kWh/m².an.
- Facteur 10 pour la consommation de chauffage soit 245,8 à 24,9 kWh/m².an.
- Diminution de 50% des surfaces de chauffe.
L’extrême performance de l’enveloppe en opposition avec la passoire thermique existante. :
- Murs manteaux bois en tunnel de la structure existante pour intervention en site occupé et encoffrement de produits amiantés. Isolation répartie dans ces murs manteaux de 42cm.
- Murs façades isolés par l’extérieur de 20cm minimum, supprimant tous les ponts thermiques de la structure poteau/poutre béton existante.
- Finition par bardeau en terre cuite pour leur résistance, leur entretien et le côté "terre" pour le site de la Cité de l’Agriculture et des services.
- Des menuiseries en aluminium laquée à double rupture de pont Uf=1,1 avec des doubles vitrages très performants.
- Rénovation complète des toits terrasses avec 240mm de polyuréthane et traitement des acrotères.
Ensuite une mise en œuvre de solutions "confort et santé" – thermique d’été – par ventilation double flux avec 2 centrales par niveau et gestion des façades bioclimatiques par protection solaire :
- Brises soleils orientables horizontaux sur une gestion individuelle et centralisée par capteur d’ensoleillement afin d’éviter les surchauffes d’été, par capteur vent pour remonter les stores en cas de vent fort et par programmation horaire pour sécuriser le bâtiment la nuit.
- Brises soleils verticaux vitrés et colorés créant des masques tout en animant les façades.
Building candidate in the category
Energy & Temperate Climates
Users' Choice
Other case studies
Contest