403.3.1.1.2.3.3 Uncorrected Outdoor Air Intake
The uncorrected outdoor air intake flow rate (Vou) shall be determined in accordance with Equation 4-6.
D = Occupant diversity: the ratio of the system population to the sum of the zone populations, determined in accordance with Equation 4-7.
Ps = System population: The total number of occupants in the area served by the system. For design purposes, Ps shall be the maximum number of occupants expected to be concurrently in all zones served by the system.