Dealing with Basement Spaces in ASHRAE 62.1-2007

Michael Wironen

Ecology and Environment, Inc.

LEEDuser Basic Member

16 thumbs up

April 16, 2010

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Roger Chang

Principal, Energy and Engineering Leader

DLR Group | Westlake Reed Leskosky

LEEDuser Expert

267 thumbs up

Mon, 04/19/2010 - 12:34

There is an ASHRAE 62.1-2007 space category for electrical rooms (0.06 cfm/sf) and storage rooms (0.12 cfm/sf), which indicates they should be ventilated, even if they are not regularly occupied spaces. It would be good to get feedback from others on this forum also.

Mark Benson

LEEDuser Basic Member

45 thumbs up

Mon, 04/19/2010 - 12:58

Interpretation IC 62.1-2007-17 of ASHRAE 62.1-2007 clarifies that electrical rooms, storage rooms, telecommunication/data, telephone/data entry, and elevator equipment rooms don't require the per square foot ventilation rate if they are unoccupied the majority of the time. Addendum 'd' or 62.1-2007, which will be included in 62.1-2010, incorporates this interpretation. If you want to double-check me, go to http://www.ashrae.org/technology/page/1412 and see for yourself.