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The construction area is regulated by a district plan that defines the spatial models: the height, width and depth of the building are given. For this reason...
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Silo Bleu
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Epure Architecture et Urbanisme SA
``Our approach seeks quality in the themes of architecture and urban planning, through an analysis of the challenges posed by location, function and context.``
A sunny student residence

The construction area is regulated by a district plan that defines the spatial models: the height, width and depth of the building are given. For this reason, the architectural firm has placed the emphasis on a detailed work of the construction elements that have resulted in a new formal definition and therefore a strong identity to the building. Displacements in the facade planes and cuts in the volume allowed to give the building a slender shape, to define a composition with a “whole” and a lateral volume and, above all, to manage the duality of the project, located between the railway tracks on one side and the residential area on the other. Thus, in a simple volume, states of reading overlapped on each other, qualifying each front of the building emphasizing the verticality and offering openings in the landscape. In response to the building’s internal program, the facade is characterized by a regular metal mesh that defines the openings and gives the building its character. This mesh is sometimes complemented by windows and photovoltaic modules arranged alternately throughout the facade.

Plan of the basement floor. The 15 floors of the building contain 276 locations, for the reception of 276 students in a comfortable and functional environment.

Building view.

Interior view of main floor. On the ground floor there is a commercial / administrative area.

Building characteristics
  • Building typology
    Residential and administrative
  • Construction type
    New
  • Year of construction
    2018
  • Energy reference surface
    10,043 m²
  • Energy index
    58 kWh/m²a (heating and electricity )
  • Energy labelling
    Minergie-P VD-135-P
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Epure Architecture et Urbanisme SA
``We are committed to the environment by integrating sustainable development expertise into our projects.``
Energy
Active solar surface  139 m²  926 m²
Active solar surface ratio  10%  90%
Peak power  8.2 kWp  131.6 kWp
Building skin application  Flat roof  Cold facade
Storage
Energy production
0
kWh
(Roof and facades, source: Solarwall SA)
Self-consumption
90%
Building skin
  • Application
    Semi-transparent photovoltaic pergola on the roof terrace
  • Description
    Flat roof with 24 cm layer of insulation
  • U value
    0.09W/m²K
  • Fastening system
    n/a
  • Other

The roof terrace is partially shaded by a photovoltaic pergola.

  • Application
    PV cladding integrated in cold facade
  • Description
    Concrete walls insulated with 24 cm of mineral wool
  • U value
    0.14 W/m²K
  • Fastening system
    Structural glazing fixing system (aluminium backrails)
  • Other

PV modules are used as cladding material. The facades have been covered with 1,335 m² of photovoltaic modules.

  • Application
    Windows
  • Description
    Triple glazing with metal frame
  • U value
    0.6 W/m²K
  • g value
    n/a
  • Other

Vertical view.

The uprights and string courses are made of thermo-lacquered dark grey aluminium sheet, with the recessed parts alternately occupied by aluminium frames or PV modules.

BIPV module
  • Product
    Solarwall Mono C (data sheet not available)
  • Manufacturer
    Gruppo STG
  • Cell technology
    Mono-crystalline 4BB
  • Front glass type/customization
    Tempered glass with partial ceramic print
  • Cell Colour
    Black
  • Dimension
    1180 x 2310 mm (standard module)
  • Power
    341 Wp (standard module)
  • Specific power
    125 Wp/m² (only 2/3 of the surface is occupied by cells, 185 W/m² considering a full cell surface)
  • Weight
    86 kg (standard BIPV module)
  • Specific weight
    30 kg/m²
Technical details

The facades are defined by a raster of about 1.40m x 2.80 m that covers the whole of the four fronts. The uprights and string courses are made of thermo-lacquered dark grey aluminium sheet, with the recessed parts alternately occupied by aluminium frames or PV modules. The raster of windows and panels is interrupted by cut-outs and recesses that define strategic areas such as entrances, balconies, stairwells, so as to give the building a more articulated definition.
427 BIPV modules, distributed in 21 different sizes of glasses and equivalent to an area of 1207 m², were integrated into the 4 facades through a mounting system purposely developed for structural glazing. The modules are fixed with an aluminium rail system on a metal substructure. The panels are suspended in the upper part and kept in position in the lower part, with the possibility of adjusting their position and inclination, as in a system of structural glazing with invisible fixing.

Projection
Hotspot image
Vertical section
Hotspot image
Costs
  • Total cost of the building
    25,000,000 CHF
  • Cubic meter price
    Not available

Details of the facade.

Parties involved
  • Owner
    Proxiland Real estate SA
  • Energie planner
    Energie Concept SA
  • Facade consultant
    BCS SA
  • Facade installer
    Progin SA Métal
  • Photovoltaic consultant
    Solarwall SA
  • Photo
    DMK Architecture Photography
Awards and recognitions
  • Awards
    Schweizer Solarpreis 2019 – New buildings
  • Publications
Solarchitecture

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