Hi,

can someone please explain what Standard should be used to determine the minimum ventilation rate for parking area for projects located outside the USA, specifically Europe? Option 2 allowes using of EN 13 779-2007 and EN 15 251-2007, but these Standards are not for parking areas. Is allowed to use local National Standard for parking ventilation rates, not mentioned and not approved in CS-v4 IEQp1? Or should we use EN Standards for areas designed for human occupancy and ASHRAE 62.1-2010 for parking exhaust rates? Thus can be the Option 1 and Option 2 mixed up?

I am asking because the ASHRAE 62.1-2010 exhaust rate required for parking areas is quite high (3.7 l/s/m2 is enormous).

Many thanks.

Martin