The sections noting air handling requirements for both high and medium risk occupations reference ASHRAE standards that have not yet been adopted as part of VUSBC (ASHRAE 2017 and 2019) as they were released just last November. It is doubtful therefore that even the newest facilities recently brought online would comply with these design standards.
The revised 2019 edition of the standard includes significant changes, including:
In addition, the maintenance code requires property owners to maintain the standards in place as of the date of issuance of their respective building permits. Even if equipment is replaced it is “like for like” so that one does not have to redesign and replace the entire HVAC system just because a 15-year old condensing unit reached the end of its useful life. These regulations, as proposed, present fundamental changes to the maintenance code, which is part of the VUSBC family.