On the basis of our empirical values and the suggestions of architects and planners, we have compiled room situations for which lighting design is frequently required. In the following, we shall present possible illumination solutions for these architectural situations. It goes without saying that all technical lighting standards are complied with. In some cases, the degree of illuminance proposed by us may even exceed the standard. For us, the aesthetics of light and a high level of visual comfort are important criteria for such decisions. At the same time, the form and the size of the luminaires must fit into the architectural surroundings. For example, we often recommend larger models if a structure has large dimensions – even if smaller luminaires with lower output would be enough. In such cases, the degree of illuminance can be reduced to a suitable level by means of a light control system.
Here, the safety of all road users has top priority. The road must be easily recognisable and the road users must be visible. This is why the standard DIN EN 13 201 applies for the illumination of inner-city roads in order to guarantee road safety. As an example, let us use a carriageway with two lanes for traffic with a total width of 6 m (illumination class P3) and cycle paths and footpaths...
A car park (32 m x 50 m) with a medium volume of traffic at an office complex or a department store should be illuminated with at least 10 lx in order to allow easy orientation. A reduction of the illumination level to 5 lx is recommended at night. As soon as persons enter the car park, or cars drive in, the degree of illuminance is raised to 10 lx again. Pole-top luminaires with precision...
Bridges are architectural landmarks which leave a lasting impression of a city. The illumination of bridges is thus of particular significance. Through the accentuation of its striking form, the structure also has an effect at night and, at the same time, can clearly be identified as a point of orientation. The floodlights used are fitted with shields and louvres to prevent undesired stray light...