855773644-LEED-v5-BD-C-Reference-Guide-Launch-Edition - Page 496

Extracted Content

PATH 4. DAYLIGHT SIMULATION (1–4 POINTS)

Perform a daylight simulation analysis for the project to understand and optimize access to daylight and visual comfort. Use the calculation protocols in IES LM-83-23 with the following clarifications:

• Calculate s patial daylight autonomy300/50% (sDA300/50%) and annual sunlight exposure1000,250 (ASE1000,250) as defined in IES LM-83-23 for each regularly occupied space in the project. sDA 150/50% may be used for areas without visual tasks with design targets of 225 lux.

• For any regularly occupied spaces with ASEnet(1000,250h) greater than 20%, identify how the space is designed to address glare.

• Calculate the average sDA 300/50% or sDA 150/50% for the total regularly occupied floor area. Do not exclude spaces based on ASE. Points are awarded based on this calculation, according to Table 2.

Table 2. Points for d aylight simulation

Average sDA300/50% or sDA150/50% value	Points
≥ 40%	1
≥ 55%	2
≥ 65%	3
≥ 75%	4

U.S. Green Building Council LEED v5 Reference Guide for Building Design and Construction, April 2025 Launch Edition 486