Ventilation Requirements for Sporadically Used Spaces

Hi!
I would say that they are included, can you perhaps have demand controlled ventilation (only when occupied)?

According to the reference guide: “Regularly occupied spaces are enclosed areas where people normally spend time, defined as more than one hour of continuous occupancy per person per day, on average…” Then on page 599 you have examples.

I would include all spaces that when they are used are used more than 1 hour. Are you saying that these spaces will not we used every day, only once in a while?

No, they are occupied, but not regularly occupied. However, when you follow ASHRAE standard for ventilation, non-regularly occupied spaces also have to have a certain amount of ventilation. Not only the spaces that are regularly occupied. (In Views credit etc, that is more relevant). When you do the ventilation spreadsheet found on LEED Credit library you will see exactly what rooms to include and what the fresh air rate is for each room type. https://www.usgbc.org/resources/minimum-indoor-air-quality-performance-calculator Corridors have 0.3 l/s/m2. Only exhaust air spaces and some storage etc do not have to have any supply air at all.

What spaces in a church would be considered “regularly occupied”?  Offices, certainly, but much of the other spaces are used mainly on weekends, unless there is a special or rental event.  (We are converting an existing unoccupied, gutted bank-branch building into our UU society’s new “church home”.)

Hi Sally, could you please post your query as a new question under this prerequisite?

Hello Santiago, please see "TABLE 6-1 MINIMUM VENTILATION RATES IN BREATHING ZONE", where you will find that common corridors in residential buildings need 0.3 L/s·m2.