This project was destined to welcome the ‘Order of Architects’ in Aquitaine, the ‘Home of Architecture’ in Aquitaine, the Aquitaine Architectural Education Centre as well as being the offices of the Public Architectural Commission.
The project is composed of 3 distinct parts, which open up on to each other starting from avenue Thiers to the new ‘city’ of St. Martin, being primarily the courtyard, the existing building and finally the new extension.
The old building, a former electrical power station, through its mass, the style of architecture and the brutality of its materiality is considered to be the main substance, the binding immutable heart of the project. Its internal envelope left intact. The project developed from that which already existed, yet with a new stratum, a new history and thus the new contemporary intervention is sympathetically treated, using the colour white.
The courtyard is an external events space, which can house and display a prototype, a model, a container, a party… It is a large external area, available and free for all occupation and directly accessible from the street by vehicle.
The new façade is doubled, combing the existing one cleared from unnecessary joinery with one new, completely glazed placed behind. The spectacle of the vaults and concrete porticos is now visible from the street. On ground floor, the space between the 2 facades becomes a covered entrance before the exhibition hall. At the first floor an unexpected loggia leads one towards the rooms of the ‘Order of Architects’, and which offers a view back to the street and its hive of activity. The existing stair has been conserved, now a space where we can talk, where we can wait.
The building was left in a state where the concrete becomes a hap-hazardous texture, the walls conserving traces and stigmas of previous occupation. The upper floors were cut in the middle of the old power station, becoming the void on to which open all the offices. It is a place of vertical circulation, staircases and walkways dividing up the 3 upper levels. It is here where we find the internal front, the offices, the hive of activity within, the visual connections, all working together. Each traversing office benefits from another orientation, which allows natural lighting and ventilation. All the buildings users are thus regrouped in one large ‘home’.
The available volume of the former energy processing silos has been optimized providing access to the conference and study rooms, the annexes, and storerooms on the ground floor, all served by the new wooden floors leading to the higher levels occupied by the offices.
The extension covers the rest of the plot towards the north of the site, forming the edge of the property. It is an infill building of only one level built entirely in metalwork 5m tall which sits between the conference room and the offices of the Aquitaine Architectural Education Center and which allows natural light to fall from the inversed sloping roof of the offices to reach the heart of the building. Both the façade and the roof are covered in white corrugated metal sheeting.
The building in its totality has become one lineal space, delimited by its 2 facades.
The envelope of the existing building was insulated externally and, that of the new extension by using a double skin cladding system. The existing façade plays a role of ‘layering’, which protects, and to the south, the new façade is made up of a curtain wall system completely glazed to obtain maximum lighting into those areas of work, study and exhibition. To the northwest, the adustable blinds allow protection from the sun during the afternoon.
In the existing building, the heat production is generated using a gas boiler system. The radiators are equipped with fans in the larger voluminous areas to increase their performance. Each office has its own radiator and opening window system thus allowing natural ventilation. In the extension a central double flow air treatment system controls the renewing, circling of air and the production of warm air. This installation allows during summer the nocturnal ventilation to refresh those areas, which are not air-conditioned. The education and conference rooms have opening glazed sections favoring a natural ventilation of these spaces