Extension of the DON BOSCO Institute to Wolluwe Saint Pierre

Last modified by the author on 24/06/2019 - 15:38

New Construction

  • Building Type : School, college, university
  • Construction Year : 2017
  • Delivery year : 2018
  • Address 1 - street : avenue du val d'or, 90 1150 WOLLUWE SAINT PIERRE, Belgique
  • Climate zone : [Cwb] Mild, dry winter, cool and wet summer.

  • Net Floor Area : 3 821 m2
  • Construction/refurbishment cost : 6 703 720 €
  • Number of Pupil : 684 Pupil
  • Cost/m2 : 1754.44 €/m2

Certifications :

  • Primary energy need
    20 kWhep/m2.an
    (Calculation method : PEB - Bxl )
Energy consumption
Economical buildingBuilding
< 50A
51 à 90B
91 à 150C
151 à 230D
231 à 330E
331 à 450F
> 450G
Energy-intensive building

Extension of the Don Bosco Institute - Construction of a new school building comprising 29 classes and 1 Alu-Pvc workshop and their additional premises. Passive building with high energy performance certified passive (zero energy).

Data reliability



Construction Manager

Contracting method

General Contractor

Owner approach of sustainability

This school, offering varied options in the industrial technical field and in the graphic arts, needed much more space to ensure a comfort worthy of the name to its students.

Since last September, this positive energy building has welcomed electricians, computer scientists and electronics engineers.

This concept, entirely prefabricated and with apparent structural elements, constitutes a real commitment for future generations with its green roofs and its rainwater recovery system.

Architectural description

See Development steps.

Energy consumption

  • 20,00 kWhep/m2.an
  • 50,00 kWhep/m2.an
  • PEB - Bxl


    • Condensing gas boiler
    • No domestic hot water system
    • No cooling system
    • Nocturnal Over ventilation
    • Free-cooling
    • Double flow heat exchanger
    • Solar photovoltaic

Urban environment

    Building located in the city, close to public transport. Maintain existing trees for building integration and minimize visual impact for neighbors.


    insulating wood box

    Jonckheere projects


    Gros œuvre / Système passif

    Prefabricated structure in insulated wood box

    Fast system integrating thermal insulation and airtightness. Lets you really "pack" the building and avoid thermal bridges and weak spots for airtightness.

Reasons for participating in the competition(s)


- the heating requirement is maximum 15 kWh / (m².year)

- the cooling requirement is maximum 15 kWh / (m².year)

- the overheating frequency of the building above 25 ° C is maximum 5% of the occupancy time of the building (comfort criterion verified by dynamic thermal simulation)

- The air tightness of the building ensures a leak rate through the envelope of maximum 0.6 air changes per hour at 50 Pa (criterion verified according to report)

- the primary energy consumption is less than or equal to 90 - 2.5 x compactness (expressed in primary KwH / (m².year)

Building candidate in the category

Energie & Climats Tempérés

Energie & Climats Tempérés

Santé & Confort

Santé & Confort

Prix du public

Prix du public

Green Solutions Awards 2019 - Bâtiments

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Author of the page
Geoffrey Vermeulen

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Green Solutions Awards 2019 - Bâtiments