Lighting designing with daylight
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Lighting: Designing with Daylight. Primarily a study in control Source that does not consume electricity Connects us with the natural world Flavors of Daylight Functional daylight – to serve task and spatial-defining functions - diffuse

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Lighting designing with daylight
Lighting: Designing with Daylight

  • Primarily a study in control

  • Source that does not consume electricity

  • Connects us with the natural world

  • Flavors of Daylight

    • Functional daylight – to serve task and spatial-defining functions - diffuse

    • Daylight Accenting – used to inspire certain moods and create visual interest -

Lighting components of daylight textures
Lighting:Components of Daylight (Textures)

  • Direct Sunlight – least useful, most hazardous to design

    • Excessively bright, creates glare, and unacceptable contrast.

    • Heat and UV radiation is not controlled

      • Too Bright for our visual system

  • Skylight – sunlight diffusing and scattering through various states or our atmosphere

    • Varies according to time of day and year, weather and atmospheric conditions.

      • Suits our visual system for long durations

  • Diffused Sunlight – introducing sunlight after interaction with a diffusing material

    • Tinting or frosted material – more manageable light source.

Lighting site layout and massing
Lighting: Site Layout and Massing

  • Height and width of forms and facades greatly affect the surface available for daylighting

  • Glazing (windows) must be considered.

  • Latitude – The closer to the north/south poles the lower the sun will be in the sky throughout the year.

  • Cardinal Orientation - rising East and setting West sun have higher potential for direct exposure .

    • Northern hemisphere – more south facing light

    • Southern hemisphere – more north facing light

Lighting daylight systems
Lighting:Daylight Systems

  • Side-light systems

    • Overhanging soffit (page 114)

    • Light Shelf (page 114)

    • Light monitor (page 115)

    • Clerestory window (page 115)

    • Vertical shading (page 115)

  • Top-light Systems

    • Skylight (page 116)

    • Bounced skylight (page 116)

    • Shielded skylight (page 117)

Lighting light control techniques
Lighting:Light Control Techniques

  • Diffusing – translucent acrylic, frosted class

    • Creates a soft even texture like on a cloudy day.

  • Tinting – reducing transmittance of a transparent substrate

    • Mixed reviews, gloomy or dark perception to the outside

  • Fritting – transparent materials with lines etched or embedded in them.

    • Act like miniature louvers to reflect light at various angles

  • Daylight at work – accent feature

  • Lighting integrating with electric light
    Lighting:Integrating with Electric Light

    • Intensity – Control of electrical fixtures as daylight changes

      • Photocells – lower light levels or help shade when daylight is to bright

        • Photocells, dimmers and time clocks

    • Color – Do not try to match daylight for CRI

    • Shape – daylight is delivered in long clean pieces or planes, or pools if controlled with light tubes.

    Lighting hazards of daylight
    Lighting:Hazards of Daylight

    • Heat Gains - direct daylight gives heat build up – tinting or expensive glazing techniques can be used.

    • Glare and Contrast – Uncontrolled sunlight causes glare and intense contrast

    • Damage to Art, Fabric, and Other Materials – UV radiation and heat will damage dyes, inks, pigments, organic materials.

    • Excessive Window Light – understand the daylight received from picture windows.

    Lighting daylight as a controllable element
    Lighting:Daylight as a Controllable Element

    Daylight is controllable and predictable.

    • Natural element to be used when used with proper controlling techniques such as draperies, curtains, blinds, etc.

    • Experiment with daylight design

    • Use Sunlight and electrical lighting together for a better design.