Dear All, The Global compliance Path guide book gives the option between ASHRAE 62.1-2007 or European standards EN 15251: 2007 and EN 13779: 2007. Question : Can we use the ventilation rates described in the ASHRAE 62.1 in regularly occupied spaces (Table 6.1, 6.2, 6.3) and the extraction rates (e.g. bathrooms) described in the CEN Standards EN 15251: 2007 and EN 13779: 2007 in in non-regularly occupied rooms (bathrooms) and achieve credit compliance? If the French extraction rate is higher than the CEN / EN standard can it replace them? Regards, Ian

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Gustavo De las Heras Izquierdo

LEED Expert

LEEDuser Basic Member

169 thumbs up

Wed, 11/18/2015 - 03:23

Hallo Ian, I do not think they will accept combining both methodologies unless you have a good reason for doing that, for instance, if you your project has a type of space that is not covered in one of the standards. My advise is that you should use the ASHRAE calculator because the reviewers are usually not familiar with the CEN standard.

Devani PERERA

Green Building Consultant

Elan

LEEDuser Basic Member

15 thumbs up

Thu, 11/19/2015 - 08:23

Hello Ian, I agree with Gustavo in that GBCI would accept one path or the other and not a mix of it. I have submitted projects using the european standrads and it has been accepted without any problem. The credi focus is the minimum rates so if your rates are higher on your design it isnt a problem.

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Global Compliance Paths ASHRAE 62.1 & EN 15251 and EN 13779

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