Center for Integrated Building Design Research Jan 2009 | Page 53

Foot candles

Feet from Window Wall

Final Analysis

With the highest performing scenarios identified from the iterations discussed, the data from each was then combined to form a conventional
additive analysis which was consolidated into a spreadsheet format. The results were then transformed into line graphs for a graphic
representation. The red lines represent the levels of illuminance received by the overcast sky condition created in the artificial sky and
recorded from within the physical bay model. The blue lines represent the minimum and maximum levels of light as prescribed by the
Illuminating Engineering Society (IES). In this manner, the footcandle measurements can be easily related and the underlay of the building
section conveys the level of light as it is experienced across the space. This analysis was conducted with simplistic conditions other
than the predetermined structural “fins” which were maintained for their control of southern exposure and solar heat gain. Based on the
findings described, it was determined that the roof aperture should include 5’ shading devices. Also, the addition of 3’ light shelves on the
second floor north fenestration as well as transparent openings to the garage doors below was suggested to utilize the northern light most
efficiently and to address the inferior levels of light at the lower north floor plate. In addition, a graded ceiling condition was suggested to
further improve diffusion of the available luminance toward the center of the space.

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