To support visual acuity by setting a threshold for adequate light levels and requiring luminance to be balanced within and across indoor spaces.
Part 1: Visual Acuity for Focus
The following requirements are met at workstations or desks:
- The ambient lighting system is able to maintain an average light intensity of 215 lux [20 fc] or more.
- The ambient lighting system is zoned in independently controlled banks no larger than 46.5 m² [500 ft²] or 20% of open floor area of the room.
- If ambient light is below 300 lux [28 fc], task lights providing 300 to 500 lux [28 to 46 fc] at the work surface are available upon request.
Part 2: Brightness Management Strategies
Provide a narrative that describes strategies for maintaining luminance balance in spaces, which takes into consideration at least two of the following:
- Brightness contrasts between main rooms and ancillary spaces, such as corridors and stairwells.
- Brightness contrasts between task surfaces and immediately adjacent surfaces.
- Brightness contrasts between task surfaces and remote, nonadjacent surfaces in the same room.
- The way brightness is distributed across ceilings in a given room.
Part 3: Commercial Kitchen Lighting
The following light levels are achieved:
- Maintained average of at least 500 lux [46 fc] of lighting at countertops and other food preparation or production areas.
- Maintained average of at least 200 lux [18 fc] of lighting in dishwashing areas.
Part 4: Visual Acuity in Living Environments
In all bedrooms, bathrooms, and rooms with windows, one or more fixtures provide the following:
- Alerting lights able to provide a maintained average of 250 lux [23 fc] as measured 0.76 m [30 inches] above finished floor.
- Evening lights able to provide a maintained average of 50 lux [5 fc] as measured 0.76 m [30 inches] above finished floor.
- Lights continuously dimmable to 25%.
Part 5: Visual Acuity for Learning
The ambient lighting system at desks in classrooms for the specified age groups meet the following requirements:
- Able to maintain an average of 175 lux [16 fc] or more measured on the horizontal plane, typically 0.76 m [30 inches] above finished floor.
Part 6: Visual Acuity for Dining
The ambient lighting system at dining surfaces for the specified restaurant types meet the following requirements:
- Cafeterias: Able to maintain an average of 150 lux [14 fc] or more measured on the horizontal plane at the height of the dining surface.
- Casual dining and fast food: Able to maintain an average of 100 lux [9 fc] or more measured on the horizontal plane at the height of the dining surface.
- Fine dining: Able to maintain an average of 30 lux [3 fc] or more measured on the horizontal plane at the height of the dining surface.
See detailed requirement for Visual Lighting Design
The Eurocoustic ceilings, both aesthetic and efficient, provide answers suitable for all types of premises.
Our ceilings are conceived and created so as to obtain a very good reflection of light. Thus, it is superior than 85% for white panels (our ceilings with Boreal finish have a reflection of light of 88%).
With our range of Tonga® ceilings, which has a reflection of light of at least 85%, we increase the Daylight Factor (DF) by 6% compared to a standard ceiling having a reflection of light of 80%.