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IGH Ingenieurgesellschaft
Höpfner mbH
Immermannstr. 49 / 51
D - 50931 Köln
Tel.: +49-221-404044
Fax : +49-221-402494
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EXPO 2000 - Halls/Pavillons, Hanover
Daylight Concept
The glass surfaces of the pyramidal roof are calculated for the most efficient
exploitation of daylight concerning dimension and alignment . A sufficient
supply with daylight is made sure by purely diffuse light of the glass surfaces
brought into line in northern direction. Additionally direct sunlight is
radiated by the reflectors through the northern glass surface against the
underside of the pyramid. The light is scattered diffusely from the underside
of the pyramid into the hall. The daylight factor is 6 to 10%. The distribution
of daylight in the hall is very homogeneous and coresponds to high
requirements.
Lighting functions of the pyramidal roof:
Daylight/Sunlight
Direct sunlight gets screened by the geometry of the pyramid. Diffuse daylight
is used for the dazzle-free illumination of the hall. A little quota of the
direct sunlight serves for the lighting up of the ceiling as well as for
the illumination through reflectors.
Protection against the sun
Protection against direct sunlight is ensured by the geometry of the pyramids.
The use of diffuse daylight doesn't cause any dazzle problems.
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