855773520-LEED-v5-ID-C-Reference-Guide-Launch-Edition-1 - Page 341
Extracted Content
Regularly occupied areas without visual tasks Some spaces in the indoor environment are used for less critical visual tasks like walking through spaces or performing activities that are not visually demanding. Adequate daylight in these spaces is considered to be 150 lux in LM-83. These spaces may be identified by reviewing IES horizontal ambient illuminance design targets for spaces with illuminance targets of 225 lux or less. For these spaces, calculate sDA using sDA150/50% as an alternative to the standard sDA300/50%.
ASE assesses the risk of visual discomfort from too much sunlight in the space. There are two variations of ASE introduced in the 2023 version of the LM-83 standard. ASEnet is used for this LEED credit to encourage LEED projects to utilize automated glare control if desired. Calculate ASEnet1000,250 for each regularly occupied space. ASE is only calculated on a room-by-room basis.
Regularly occupied spaces with ASEnet(1000,250h) greater than 20% Based on IES’s experience to date and analysis of the study data, an ASEnet of 20% or higher is a level of concern. For spaces where ASEnet exceeds 20%, projects must work with the designer to consider architectural methods to reduce the risk of sunlight penetration or consider the use of an automated daylight management system in as many window areas as necessary to guarantee that it can avoid excessive occurrence of direct sunlight within the space.
Auditoriums
- Auditoriums may be excluded from the daylight requirements.
DOCUMENTATION
| Project types | Options | Paths | Documentation |
|---|---|---|---|
All | Option 1. Biophilic Environment | Path 1. Integrated Biophilic Design | Report/narrative identifying, classifying, and explaining each of five biophilic design principles incorporated into the project, using the LEED v5 Indoor Biophilic Design Template. |
All | Option 1. Biophilic Environment | Path 1. Integrated Biophilic Design | Evidence of the project’s indoor biophilic design features (for example, any one of the following: contract documents, photographs, renderings, architectural mood board). |
All | Option 1. Biophilic Environment | Path 2. Quality Views | Percentage of regularly occupied area with access to views (%). |
All | Option 1. Biophilic Environment | Path 2. Quality Views | LEED v5 Quality Views calculator or a quality view simulation report. |
All | Option 1. Biophilic Environment | Path 2. Quality Views | Architectural drawings that demonstrate direct access to the view and qualifying distance from glazing or a quality view simulation report and report checklist. |
U.S. Green Building Council LEED v5 Reference Guide for Interior Design and Construction, April 2025 Launch Edition 330