855773667-LEED-v5-O-M-Reference-Guide-Launch-Edition-1 - Page 247

Extracted Content

Determine the required number of people that must respond to the survey using the response rate calculation in Appendix III . Survey results only contribute to points for this credit if enough people respond to the survey.

Analyzing the Results

Points for this credit are based on a percentage of satisfied occupants. Mean satisfaction level and response variance calculations are both required but do not inform points allocation. This information can be used by the project to understand their survey results and possible opportunities for improvement.

Calculate the percentage of occupants that are satisfied with the indoor environment (Equation 3). Only responses of “somewhat satisfied,” “satisfied,” and “very satisfied” constitute a satisfied response.

Equation 3. Percentage of satisfied occupants

𝑠 𝑠 𝑠 𝑠 𝑠 𝑟 𝑟 𝑟 𝑟 𝑟

% 𝑠 𝑠 𝑠 𝑠 𝑠𝑠= 𝑇 𝑇 𝑇 # 𝑜 𝑠 𝑠 𝑠 𝑟 𝑟 𝑟 𝑟 𝑟

Determine the mean satisfaction level or the average rating. Using a scale of 1 to 7 for “very dissatisfied” to “very satisfied,” respectively, determine the mean value using Equation 4.

Equation 4. Mean satisfaction level

𝛴 𝑟 𝑟 𝑟 𝑟 (𝑣 𝑣 𝑣 ) 𝑀 𝑀 𝑠 𝑠 𝑠 𝑠 𝑠 𝑠 𝑙 𝑙 𝑙𝑙= 𝑇 𝑇 𝑇 # 𝑜 𝑠 𝑠 𝑠 𝑟 𝑟𝑝 𝑝 𝑝

Determine the response variance, which will provide an indication of how the survey responses differ from the mean satisfaction level, using Equation 5.

Equation 5. Response variance

[ (𝑟] [𝑟] [𝑟] [𝑟] [ (𝑣] [𝑣] [𝑣][) −𝑚] [𝑚] [ 𝑠] [𝑠] [𝑠] [𝑠] [𝑠] [𝑠] [ 𝑙] [𝑙] [𝑙][)²] 𝑆 𝑆 𝑆 𝑣 𝑣 𝑣 𝑣 = [𝛴]

𝑇 𝑇 𝑇 # 𝑜 𝑠 𝑠 𝑠 𝑟 𝑟 𝑟 𝑟 𝑟 −1

𝑇 𝑇 𝑇 # 𝑜 𝑠 𝑠 𝑠 𝑟 𝑟 𝑟 𝑟 𝑟 −1

U.S. Green Building Council LEED v5 Reference Guide for Operations and Maintenance, April 2025 Launch Edition 237