Forum discussion
NC-2009 IEQp1: Minimum IAQ Performance
Hi!
the only method to check compliance is this?
- Based on Space Floor Area – Both
Interior and Perimeter Spaces
- Limitation on Distance of Interior
Spaces from Perimeter Openings
And...when i have a industrial building (hangar), I must analyze only the openings area? It's impossible to compliance the distance of openings in a environment like this.
Thank you very much!
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Can LEED 2009 projects elect to follow ASHRAE 62.1-2010 for this prerequisite?
Which units should be included in the calculations for this prerequisite?
Andrew Mitchell, P.E.
PrincipalMitchell Gulledge Engineering, Inc.
LEEDuser Expert
126 thumbs up
August 7, 2013 - 12:20 pm
Pablo, take a look at table 6-4. I believe you could group a hangar in there with a parking garage (especially since they typically do not fire the engines inside the hangar). This would make a hangar an exhaust only space. Note C would allow you to delete the exhaust requirement if you have two sides that are at least 50% open.
Marina Andrade
Sustainability Consultancy ServicesCushman & Wakefield
17 thumbs up
August 7, 2013 - 12:39 pm
Sorry, the hangar that've mentioned is like a storage, and not a garage.
But, my question is....if i need to compliance the percentage of openings (4% of area), how can i use the table 6-4 to calculate these openings?
thanks!
Andrew Mitchell, P.E.
PrincipalMitchell Gulledge Engineering, Inc.
LEEDuser Expert
126 thumbs up
August 7, 2013 - 12:41 pm
You are confusing the natural ventilation requirement with an exhaust requirement. If the area needs to be exhausted then that is your method of ventilation. If it is a storage space and is not an occupiable space then neither exhaust nor natural ventilation are necessary.
Marina Andrade
Sustainability Consultancy ServicesCushman & Wakefield
17 thumbs up
August 7, 2013 - 12:49 pm
Andrew, thanks again!
Marina Andrade
Sustainability Consultancy ServicesCushman & Wakefield
17 thumbs up
August 7, 2013 - 1:03 pm
Andrew, i'm confused about one thing.
If my storage is an occupiable area i need exhaust or natural ventilation. To exhaust i'll use the rate of table 6-4.
If i consider natural ventilation and not mechanical exhaust, i need to use just the percentage of total openings area?
Andrew Mitchell, P.E.
PrincipalMitchell Gulledge Engineering, Inc.
LEEDuser Expert
126 thumbs up
August 7, 2013 - 1:10 pm
Pablo, if you are storing hazardous material then you need to exhaust it. If it is just dry storage then you can use natural ventilation. In that case I would only apply the requirement to the area that is being occupied. For instance, if you have a desk type work area with a huge storage area behind it then apply the calculation to the desk area.
Marina Andrade
Sustainability Consultancy ServicesCushman & Wakefield
17 thumbs up
August 7, 2013 - 1:19 pm
Now i know much better.
tks!