Courtroom Lighting Criteria Evaluation
Task 1 Report
Vertical Illuminance (Fc)
Horizontal Illuminance (Fc)
When compared with the other courthouses
surveyed, the district courtroom at the Moynihan
courthouse was a relatively successful lighting
scheme. Several factors worth noting with
regards to this lighting design include:
Daylight improves the general quality of
light in the space and connection to the
outside, however better shading systems
could have been integrated to block
sunlight when it enters the room.
There is a high amount wood wall surfaces
that have a very low reflectance. These
cause a high degree of contrast with the
ceiling, and makes the room appear
dimmer than it is due to eye adaptation.
This high degree of contrast is confirmed in
the luminance maps.
provide a significant amount of light on the
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ak uf e h ae i e
luminance than the walls even though they
have a lower reflectance.
Illuminance levels are slightly below the
design guide and IESNA recommendations
in most task areas.
Wallwash luminaires at the front of the
room over the judge are fairly ineffective
due to the low reflectance and specularity
of the wood panelling. This is confirmed by
the minimal highlights in the luminance
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Ove Arup & Partners Consulting Engineers PC
Issue March 1, 2006