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Lighting project for the regional headquarters of a major French bank
Nantes, France
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About Project
The building that houses the regional headquarters of the Atlantique Vendée, one of the major French banks, is a perfect example of bioclimactic architecture. Designed by the AIA Ingénierie studio, it features modular offices covering three floors surrounding a central plaza, as well as side platforms divided into five floors. The entrance features a 15m high glass frontage that allows natural light to pass through and includes a panoramic lift. In this context, the AIA architectural studio has decided to leave ample space for natural light while also carefully monitoring artificial light. The dynamic lighting concept in the hall and plaza are based on this principle and feature iGuzzini Zyl luminaires. To ensure that the building does not disappear at night or when the artificial lighting is switched off, the architects have created a central luminous animation that matches the vertical thrust of the large hall perfectly. The AIA studio lighting designer, Philippe Laheux, has chosen to use pendant glass luminaires in the large central hall. According to the lighting designer, using LED lighting was a must as this technology reduces consumption and allows control systems to be used that can create dynamic lighting and command colour and intensity variations automatically.
Philippe Laheux opted to use the iGuzzini Zyl luminaire as it is available in both a pendant and bollard version. Zyl is a luminaire with a stainless steel base and an external transparent polycarbonate screen that encapsulates a decorative transparent methacrylate cylinder. The standard industrial production code has been modified to adapt it perfectly to project specifications. In particular, the white LED has been replaced with three RGB LEDs, the heights of the bollard bases have been changed and special pendant cables have been designed so that the lowest luminaires do not hang more than 6m below the glass frontage. Blue and green LEDs have been chosen because they are the official colours of the Atlantique Vendée regional headquarters. Inside, the light intensity of the pendant luminaires varies according to the natural light and colour variations are timed to match the rhythm of the Zyl luminaires outside. The lighting designer has recorded numerous light sequences so that the building technicians can choose appropriate light programmes for special events. The colour variations occur at a slow rhythm and the shades are relatively delicate, as the main idea is to accompany the arrival and departure of employees and not to create spectacular light shows. The DALI system that controls each luminaire is connected to the building control system and activates the required light scenario when tripped. The customer has already established that the dynamic lighting system will turn off automatically when rooms are not being used. In the hall a total of 65 pendant Zyl luminaires have been installed, and in the plaza 135 Zyl bollards.
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Year:
2015
Client:
Istituto bancario francese
Architectural project:
AIA Architectes
Lighting project:
AIA Ingénierie – Philippe Laheux (AIA)
General contractor:
Architectes Ingénieurs Associés
Photographer:
Guillaume Satre
Products Used:
Reflex
Zyl
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