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Saw-tooth roof
(詳細はroof comprising a series of ridges with dual pitches either side. The steeper surfaces are glazed and face away from the equator to shield workers and machinery from direct sunlight. This sort of roof admits natural light into a deep plan building or factory.
==Advantages==
Before daylight was supplemented or replaced with electric light in the late 19th-century, consideration of good daylight strategies was essential. The sawtooth roof, with its glass panels facing north, is designed to provide uniform, natural light over a large area, without the problems of direct sunlight and its heat. It was particularly useful in design factories and manufacturing buildings.
Sawtooth structures show apertures with vertical or angled glazing installed in a sloped roof plane. Sawtooths are most effective when used in series of three, and were historically used in industrial and manufacturing buildings as the primary light source.〔(www.informedesign.umn.edu: Implications, vol 3 no 3 - (M. D. Kroelinger, University of Nevada) )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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