- 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 €
- Cost/m2 : 2191.58 €/m2
Primary energy need :
(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 projecthttp://www.wirtzarchitecte.lu/fr/nos-projets/ecole-prescolaire-et-deducation-precoce-a-harlange/
Other consultancy agencySyntec Mr Peter ugidos / +35226782010 technical studies, follow up of heating installations, ventilation
DesignerJean-Marie Wirtz Mr Jean-Marie Wirtz - +352 25 33 10 Design, Construction site management
ContractorSyndicat intercommunal Mr Gira - +352 93 70 90 241 contracting authority
Structures calculistBered solutions SARL Mr Roland Bastenier - 95 80 96 Statistical studies, construction site management, infrastructures
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.
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
- 34,90 kWhep/m2.an
- 172,46 kWhep/m2.an
- 53,60 kWhef/m2.an
- 0,66 W.m-2.K-1
- Urban network
- Urban network
- No cooling system
- Biomass boiler
- 100,00 %
- 12,30 KgCO2/m2/an
- 163,00 KgCO2 /m2
- 50,00 an(s)
Life Cycle Analysis
- 350,00 m3
Health & Comfort
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
68 parking spots
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.