855773644-LEED-v5-BD-C-Reference-Guide-Launch-Edition - Page 166
Extracted Content
Theatrical lighting Lighting for theatrical purposes is essential for stage, film, and video performances, and precise lighting is crucial for production quality.
Healthcare Lighting for hospital emergency departments and helipads are critical for emergency services, ensuring visibility for medical personnel and aircraft.
National and state flag lighting Lighting for the national flag is symbolic and often requires illumination at night, especially in higher lighting zones (2, 3, or 4). When state flags are flown with federal or national flags, they exempt lighting.
Internally Illuminated Exterior Signage
Exterior signage can be a significant source of light pollution, contributing to issues like light trespass, skyglow, and glare. Table 3 provides maximum nighttime luminance levels for any exterior signage. Using photometric calculations, verify that the signage light output does not exceed the luminance levels (cd/m [2] ) during nighttime hours.
DOCUMENTATION
| Project types | Options | Paths | Documentation |
|---|---|---|---|
| All | All | All | MLO Lighting Zone. |
| All | All | All | Justification of MLO Lighting Zone classification (e.g., aerial image of site and bordering parcels/community). |
| All | All | All | Site lighting plan showing all exterior light fixtures within the lighting boundary, measuring the distance from the furthest of each light fixture type to the lighting boundary; include a key/schedule. |
| All | All | All | Contract documents showing all the project’s internally illuminated signage details. |
| All | All | All | LEED v5 Light Pollution Reduction calculator. |
| All | All | All | Product information from the exterior lighting manufacturers, highlighting the BUG ratings for each fixture |
| All | All | All | Evidence of the maximum nighttime luminance levels of any internally illuminated signage (e.g., product information from the manufacturer or test results). |
| All | All | All | Evidence that all installed exterior lighting in Model Lighting Ordinance (MLO) Lighting Zones 3 and 4 are automatically turned off when daylight is available (e.g., contract documents or commissioning reports showing the programmed settings). |
U.S. Green Building Council LEED v5 Reference Guide for Building Design and Construction, April 2025 Launch Edition 156