The following are under a 45-day public review from Sept. 21 to Nov. 5:
- 2nd Public Review of BSR/ASHRAE Addendum L to ANSI/ASHRAE Standard 62.1-2016, Ventilation for Acceptable Indoor Air Quality
The natural ventilation procedure was modified to require mechanical ventilation with certain exceptions. This proposed addendum provides specific requirements for the exception. It also recognizes that there are inherent health issues with outdoor air in many locations in the world and updates the requirements based on recent studies and airflow evaluations. The prescriptive path has been improved by removing the openable area requirement of 4% of net occupiable floor area. Two tables are proposed that provided minimum openable area based on program type, opening geometry, and spacing of vertical openings.
- 2nd Public Review of BSR/ASHRAE Addendum t to ANSI/ASHRAE Standard 62.1-2016, Ventilation for Acceptable Indoor Air Quality
This proposed addendum adds a new informative appendix which is a companion to the changes to the Natural Ventilation Procedure. It provides information for application of the new procedure.
The following is under a 30-day public review from Oct. 12 to Nov. 11:
2nd Public Review of BSR/ASHRAE Addendum i to ANSI/ASHRAE Standard 62.1-2016, Ventilation for Acceptable Indoor Air Quality
The current scope of Standard 62.1 contains informative text and is also unclear in the current Section 2.3 regarding when or where additional ventilation requirements apply. This proposed addendum removes informative text that is not scope definition and clarifies when the standard does not provide ventilation rates. Addendum h adds informative text to Informative Appendix G – Application.