Projection ratio
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Specifies the ratio between the
developed area and the projected area of the window or rooflight.
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Frame factor
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Specifies the ratio of the window or
rooflight area which is occupied by the frame.
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Rooflight cover
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Specifies the ratio between the area of
the floor covered by an array of rooflights to the total area of rooflight
glazing.
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Aspect ratio
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Specifies the ratio of the window's (or
rooflight's) height to its width.
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Shading position
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Specifies the position of the shading
device in relation to the window glazing.
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Shading color
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Specifies the colour of the shading
device on the window.
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Shading translucency
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Specifies the degree of translucency of
the shading device on the window.
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Transmission factor
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Specifies the shading correction
(reduction) factor due to overhangs or fins. In BS EN ISO 13790:2008, it is
determined according to section G.5.4.3
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Brise-soleil
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Indicates whether the overhang is a
brise-soleil.
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