Regional School Uewersauer - Luxembourg
Last modified by the author on 10/10/2016 - 11:09
Extension
- Building Type : Preschool, kindergarten, nursery
- Construction Year : 2012
- Delivery year : 2015
- Address 1 - street : 15, rue Mgr Fallize 9655 HARLANGE, Luxembourg
- Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.
- Net Floor Area : 2 375 m2
- Construction/refurbishment cost : 5 205 000 €
- Number of Children : 11 Children
- Cost/m2 : 2191.58 €/m2
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Primary energy need
34.9 kWhep/m2.an
(Calculation method : RGD du 31 août 2010 - bâtiment fonctionnel )
The primary cycle school is connected to a school building and an existing sports hall along the creek Walterbaach. Design of different volumes connected by a canopy overlooking a game terrace and oriented to the natural environment of the site. A covered courtyard was created between the existing building and the classrooms which provides access to the different floors of the new building and existing buildings such as the former sports hall and canteen / kindergarten. The construction was carried out in timber frame for the ground floor and first floor. Only a few concrete elements were executed in these floors (stairs and elevator shaft) and, for static and safety reasons. These elements are materialized by the visible concrete walls whose surface has been structured with vertical wood planks. The basement, dedicated to technical equipment and storage, is fully apparent with rough concrete. Most of the wooden elements were prefabricated, which helped save time on site and gave the opportunity to work simultaneously inside the building. These wooden elements were completely covered with plaster to ensure their fire resistance and to avoid over-sizing of the wooden building elements to achieve sufficient strength.
See more details about this project
http://www.wirtzarchitecte.lu/fr/nos-projets/ecole-prescolaire-et-deducation-precoce-a-harlange/Data reliability
Self-declared
Stakeholders
Other consultancy agency
Syntec
Mr Peter ugidos / +35226782010
http://www.syntec.lutechnical studies, follow up of heating installations, ventilation
Designer
Jean-Marie Wirtz
Mr Jean-Marie Wirtz - +352 25 33 10
http://www.wirtzarchitecte.luDesign, Construction site management
Contractor
Syndicat intercommunal
Mr Gira - +352 93 70 90 241
http://www.regionalschoul-uewersauer.lu/contracting authority
Bered solutions SARL
Mr Roland Bastenier - 95 80 96
http://www.bered.luStatistical studies, construction site management, infrastructures
Contracting method
Separate batches
Owner approach of sustainability
The 3 cities responsibles of the school are part of the climate agreement and want municipal buildings to be renovated efficiently.
Architectural description
Construction based on low energy criteria: - thermal insulation of walls of +/- 24cm. - mineral thermal insulation of flat roofs: +/- 24cm. - mineral thermal insulation of floor slabs: +/- 14cm. - Installation of high performance exterior woodwork. - Air tightness of the building controlled via a blower door test. The building as been design in order to optimize the contribution of solar energy and natural light into the building through large windows in the classrooms and through the skylights at the courtyard. Two of these skylights give the possibility of having fresh air if necessary. The building was built contiguous to an existing building to provide a compact energy tower respecting the route of the creek "Walterbaach". This design permits maximum preservation of the environment and simultaneously optimizes the building area. - Renaturation of the creek by banks rehabilitation. - New plantings around the building. - Area designed around the building using natural materials such as grass and natural stone for access paths. - Building of a storm storage reservoir. - Use of LED lighting with presence detectors and brightness management. - Classrooms lighting divided in two distinct zones for better light management. - Heat management through external blinds with centralized management. - Use of delay taps. - Mechanical ventilation without air conditioning. - Use of environmental friendly materials requiring little maintenance
If you had to do it again?
using even more environmental friendly materials requiring little maintenance, and a design allowing more energy savings.
Building users opinion
users are satisfied with the building
Energy consumption
- 34,90 kWhep/m2.an
- 172,46 kWhep/m2.an
- 53,60 kWhef/m2.an
Envelope performance
- 0,66 W.m-2.K-1
- 0,33
- 2,20
Systems
- Urban network
- Urban network
- No cooling system
- Free-cooling
- Biomass boiler
- 100,00 %
Smart Building
GHG emissions
- 12,30 KgCO2/m2/an
- 163,00 KgCO2 /m2
- 50,00 an(s)
Life Cycle Analysis
Water management
- 350,00 m3
Indoor Air quality
Comfort
Product
Janitza UMG 511
Janitza
For Top - Automation and energy control - Tel: +31383372700
http://www.janitza.com
Easy use, direct communication with maintenance, possibility of multiple data collection
the technical office is satisfied
Construction and exploitation costs
- 2 750,00 €
- 300 000 €
- 6 935 685 €
Urban environment
The construction site is located in the village center, bordered by a stream and surrounded by a green environment (a forest and agricultural area) School buses stops have been implemented to allow the students from the 3 cities to reach the school using public bus network. A few shops such as the post office, a bakery and a restaurant are located nearby.
Land plot area
59 600,00 m2
Built-up area
17,35 %
Green space
12 500,00
Parking spaces
68 parking spots
Building Environmental Quality
- acoustics
- comfort (visual, olfactive, thermal)
- energy efficiency
- maintenance
Reasons for participating in the competition(s)
Lechauffage du bâtiment est relié au chauffage urbain.Constructionsur base des critères de la basse énergie : isolation thermique des murs de +/- 24cm.
- isolation thermique minérale de la toitureplate : +/- 24cm.
- isolation thermique minérale des dalles desol : +/- 14cm.
- utilisation d’une structure en ossature boispour les étages supérieurs et une structure béton pour le sous-sol enterré.
- Mise en place de menuiseries extérieures àhaute performance.
- Etanchéité à l’air du bâtiment contrôlée viaun blower door test.
- Conceptiondu bâtiment afin d’optimiser l’apport d’énergie solaire et de lumière naturelledans le bâtiment via de grandes baies vitrées pour les salles de classe et viades lanterneaux au niveau de la cour intérieure. Deux de ces lanterneauxpermettant l’apport d’air frais si nécessaire.
- Lebâtiment a été construit accolé à unbâtiment existant afin de constituer une construction énergétiquement compactetour en respectant le tracé du ruisseau « Walterbaach ». Cetteconception a permis une préservation maximale du site verdoyant existant et enmême temps un aménagement optimisé du construit.
- Renaturationdu ruisseau par remise en état des berges.
- Réalisationde nouvelles plantations autour du bâtiment.
- Réalisationdes abords de la construction à l’aide de matériaux naturels tels que gazon,gabion et pierres naturelles pour les chemins d’accès.
- Réalisationd’un bassin d’orage.
- Utilisationdu type d’éclairage LED avec gestion par détecteur de présence et deluminosité.
- Eclairagedes salles de classes réparti selon deux zones distinctes pour une meilleuregestion de l’apport d’éclairage.
- Miseen œuvre de stores extérieurs avec gestion centralisée pour limiter l’apport dechaleur.
- Utilisationde robinets à temporisation.
- Miseen place d’une ventilation mécanique sans climatisation. Utilisation de matériaux nedemandant que peu d’entretien et ne présentant pas de risques pourl’environnement