Light Flashcards
What is daylight simulation requirement in regular occupied spaces?
Target illuminance 19 fc(200 lux) is achieved for >30% of individual unit area throughout 50% of daylit hours of the year.
What is the minimum light level of classrooms?
30 fc
What is the minimum light level of Dining, Lounge and Restroom?
10 fc
What is Option 2 of Part 1 of L01: Light Exposure?
a. At least 30% of the regularly occupied area is within a 20 ft(6 m) horizontal distance of envelope glazing in each floor and/or in each individual unit.
b. Common spaces have unassigned seating and can accommodate at least 15% of regular occupants at any given time. At least 70% of all seating in the spaces is within a 16 ft(5 m) horizontal distance of envelope glazing.
What are the lighting control system requirements for a lighting zone?
a. Lighting systems have at least 3 lighting levels or scenes that allow for changes in light levels and have the ability to change at least one of the following:
1. Color.
2. Color temperature.
3. Distribution of light by controlling different groups of lights or through preset scenes.
b. All regular occupants have control over their immediate lighting environment through at least one of the following:
1. Manual controls (e.g. switches or control panels) located in the same space as each lighting zone.
2. Digital interface available on a computer or phone.
c. Lighting for presentation or projection walls are separately controlled.
What are the requirements to manage glare from electric lighting of each in luminaire ?
Each luminaire to meet one of the following:
a. 100% of light is emitted above the horizontal plane.
b. Classified with Unified Glare Rating (UGR) of 16 or lower.
c. Luminance that does not exceed 6,000 cd/m at any angle between 45 and 90 degrees from nadir.
What are the considereations Professional needs to include in Designing Visual Balance?
a. Luminance ratios on vertical and horizontal adjacent zones.
b. Illuminance uniformity on horizontal task planes.
c. Changes in lighting characteristics, such as light levels, changes in color and distribution. d. Color temperature of lights used.
What does late afternoon/early night light exposure to our circadium rhythm?
Phase delay
What is daylight simulation requirement for common spaces that have unassigned seating for at least 15% of regular occupants at any given time?
Target illuminance 28 fc(300 lux) is achieved for >30% of individual unit area and average illuminance 9 fc(100 lux) is achieved for >95% of individual unit area throughout 50% of daylit hours of the year.
What is interior daylight exposure requirement for Facade Design?
Envelope glazing is no less than 15% of the regularly occupied floor area or individual unit. Visible light transmittance (VLT) of windows is greater than 40%. (1pt)
or
Envelope glazing is no less than 25% of the regularly occupied floor area or individual unit. Visible light transmittance (VLT) of windows is greater than 40%. (2pts)
What is a lighting zone?
One per 650 ft2 or one per 10 occupants (1pts)
One per 320 ft2 or one per 5 occupants (2pts)
What is the space consideration to manage glage from electric lighting?
. Unified Glare Rating (UGR) of 16 or lower (All space except indust)
. Unified Glare Rating (UGR) of 19 or lower (Industrial)
What are the requirements of predetermined light levels?
a. More than 50% of the occupants are under the age of 65.
b. At least 90% of the project area is comprised of Offices and classrooms: minimum 30 fc, Lobby, atrium and transition (including corridor and outdoor pathways): minimum 10 fc, Storage spaces: minimum 10 fc, Dining, Lounge and Restrooms: minimum 10 fc.
What are the requirements of the shading of All vertical transparent envelope glazing ?
Manual shading controllable by occupants at all times. Shades are regularly opened once a day for all days that the project is in use;
or
Shading is automated to prevent glare.
What is the minimum light level of Storage?
10 fc
