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Planning evacuation routes

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Narrow evacuation route

Evacuation routes up to 2 m wide require horizontal lighting of at least 1 lx along the centre line. On at least half the width, the minimum lighting level should be ≥ 0.5 lx.
The ratio between highest and lowest lighting strength should not exceed 40:1.

When light planning, a “wall zone” can be defined for the calculations, depending on shadows and obstacles in the form of book shelves, furniture, etc. In a corridor, for example, values do not need to be stated in this wall zone area and the lighting level can be planned as low as 0 lx.

The planning shows that we have at least 1 lx in the centre of the evacuation route (centre line) which corresponds with the requirements in EN 1838.
When planning emergency lighting, the calculation grid must be defined as having 0.2 m between each calculation point.

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Wide evacuation route

Wider evacuation routes are best treated as several 2 m wide evacuation routes running parallel, all demanding 1 lx in the centreline and at least 0.5 lx as the minimum lighting strength.

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Alternatively, a wider evacuation route can be treated as an open area and be provided with anti-panic lighting where the requirement is ≥ 0.5 and the ratio between highest and lowest does not exceed 40:1.

The planning shows that we have at least 1 lx in the centre of each evacuation route, which corresponds with the requirements in EN 1838.

When planning emergency lighting, the calculation grid must be defined as having 0.2 m between each calculation point.

 

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