Under Guidance, delete: "There are no substantive changes to the prerequisite requirements; refer to the LEED v4 reference guide, with the following additions:"

and add
"Refer to the LEED v4 reference guide, with the following additions and modifications:
Behind the Intent
Beta Update
The reverberation time requirements for large-volume spaces have been updated to replace the standard: NRC-CNRC Construction Technology Update No. 51 with a table developed by USGBC based on UK Department for Education performance standard Building Bulletin 93.

The ASHRAE and AHRI references for HVAC background noise have been removed to emphasize ANSI Standard S12.60-2010, Part 1, Annex A.1 as the primary source for evaluating background noise in classrooms and other core learning spaces.
Exceptions for certain spaces are included to clarify the scope (and limitations) of this prerequisite.

Step-by-Step Guidance

Steps 1-9. Refer to the LEED v4 reference guide
Step 9. Select reverberation time compliance option for each classroom and core learning space
In addition to the language in this step in the LEED v4 reference guide, add:
Option 3. Maximum reverberation time for large volume spaces
Confirm that the reverberation time for the space complies with Table 1 in the rating system using calculations or measurements. Retain calculations or measurement logs for credit documentation.
Step 10. Remove this step (covered above in step 9, option 3)."