I found in ASHRAE 62.1-2004 standard that using a vestibule to provide airlock between garage and regulary occupied spaces is a compilant way to limit the entry of exhaust gases. Is it possible to achieve this credit that way? For example: There's no direct connection between the garage and the office space in our recent project (i.e. it's on a different level underground connected with staircase and lifts).

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Tristan Roberts

Representative

Vermont House of Representatives

LEEDuser Expert

7780 thumbs up

Mon, 11/21/2011 - 06:05

Nandor, I don't think this would be LEED-compliant. There is likely to be some air movement from the garage to the building unless there is negative pressure.

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vestibule instead of pressure difference

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