of the sphere to enable its use both during and after the Expo as
a highly modern science and technology museum, replete with
digital exhibits and projections.
Lighting Lab.1 carries out lighting design, daylight analysis, energy
consultancy, R&D studies in lighting, and custom lighting product design.
In particular, we support the architect in the design of facade openings
and the daylight control elements of building facades, with simulations
to determine glazing types and shading systems.
Astana is on the 50th parallel in a flat steppe region whose continental
climate means temperatures range from more than 35 degrees Celsius
in the summer to below minus 30 in the winter, making it the second
coldest capital in the world. While the winter light is invariably diffuse,
in summer it may be either direct or diffuse. However, if this added some
small complexity to our calculations, the biggest challenge lay in the
design of the structure.
The architect designed ‘a pure sphere, a smooth sphere – not faceted.
It had to be fully curved’. With the exception of those in a section of the
sphere seemingly scooped out to accommodate photovoltaic panels and
wind turbines, each panel has a double curve.
Daylight calculation was realised in three stages. First, we carried out
1 Glazing with ceramic frits
2 Glazing with less ceramic frits
3 Daylit interior areas filled with special sculptures
4 Video walls and screens are used in the areas with daylight control
5 Projections are used in well-darkened areas
Calculations for the interior
needed to factor in the different
glazing on each hemisphere