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The Effect of the Stepped Section Atrium on Daylighting Performance

Physical scale models were used to investigate daylighting performance of a newly proposed type of atrium, namely the stepped section atrium. Physical scale models were constructed for both conventional equal section atrium and the stepped section atrium. Comparison of the daylighting performance of the two types of atrium showed a significant improvement in daylighting performance by the newly proposed stepped section atrium. Daylight readings showed that terraces inside the stepped section atrium improve light penetration inside spaces adjacent to these terraces. They also improve uniformity, and consequently reduce glare.