ASHRAE OA CFM Requirements

[jr1772]

Is there an outside air requirement per sq ft in a building or is it per person only?

 

[CptHk]

Different states adopt different versions of ASHRAE 62.1.

To get a better answer, more information please.

My simplistic incomplete answer is:

1-ASHRAE 62.1-2004/2007 have both people and s.f. components built into the ventilation rate procedure.

2-ASHRAE 62.1-1989 (which IMC 2000, 2003, and 2006 is based on) ventilation rate procedure uses per person only for most types of occupancies.

 

[ChasBean1]

Also different parts of buildings can have different standards. An office has a cfm per person recommendation and a corridor has a cfm/ft2 recommendation, as examples...