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Daylighting Software
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- Daylighting software models the effect of lighting from rooflights and/or windows.
- Arrangements of rooflights or windows can be altered, and the light adjusted to show variations in glazing.
- Optimium lighting conditions can be achieved in this way, with maximum efficiency.
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Average Daylight Factor
The ratio of indoor to outdoor light illuminance under a standard overcast sky.
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Large Windows Only
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Smaller Windows and
Added Rooflights
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Average Daylight Factor = 3.4%
Total Glazing Area = 48m2
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Average Daylight Factor = 4.5%
Total Glazing Area = 43.5m2
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Giving values in line with: DFEE Building Bulletin 87 "Guidelines for Environmental Design in Schools"
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Rooflights compared to windows provide:
- A more even spread of light
- Less glazing area but more light
- Higher insulation performance
Design Framework
Lighting & Architectural Integration
Enhancing the architecture
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Task/Activity Lighting
For both general and close up work
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Lighting Costs
Capital and running costs
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LIGHTING
DESIGN |
Lighting Maintenance
Consider for the life of the building
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Lighting for Visual Amenity
Enhancing the appearance of the interior
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Lighting and Energy Efficiency
Daylight & electric considered together
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Source: Department of Education and Employment - Building Bulletin 90 "Lighting Design for Schools"
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