Sidelighting Calcs-2s-page - The Lumen Method of...

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1 The Lumen Method of Sidelighting The Lumen Method of Sidelighting Conditions of use: 1. Diffuse light only inside the room. NO direct sunlight inside the room 2. Wall window is from wall to wall and from window sill to ceiling
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2 The Lumen Method of Sidelighting Conditions of use: The Lumen Method of Sidelighting Condition of use: Diffuse light only inside the room. NO direct sunlight E p = E ws . A w . t. CU s + E wg . A w . t. CU g E p = Illuminance at point P E ws = Illuminance at window plane from sky and sun Aw = Gross area of window t = Net transmittance of window E wg = Illuminance at window plane from sky and sun
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3 The Lumen Method of Sidelighting Condition of use: Diffuse light only inside the room. NO direct sunlight Sky component ground component max mid min The Lumen Method of Sidelighting Step 1: Determine the available daylight E ws E wg E h
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The Lumen Method of Sidelighting Step 1: Determine the available daylight •Da te • Time of day
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This note was uploaded on 04/07/2008 for the course ARCH 342 taught by Professor Boubekri during the Fall '07 term at University of Illinois at Urbana–Champaign.

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Sidelighting Calcs-2s-page - The Lumen Method of...

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