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Is it possible for the flush-out start date to vary by ventilation zone?

Should a parking garage be included in a flush-out, if it is in a basement and not fully open to the outdoors?

Do the outdoor air minimum quantities have to be met for each individual space, or for the building square footage as a whole?

Do non-regularly occupied areas such as bathrooms and corridors have to be flushed-out?

For LEED NC addition projects, do existing non-renovated areas need to be flushed-out or tested?

For IAQ testing, how many sample points are necessary in non-mechanically ventilated spaces?

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I'm confused about the 11/1/2011 LEED addendum that removed the "1/25,000 SF or each contiguous area whichever is larger" language from the credit requirement. How do we determine the number of sampling locations for testing?

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CI-2009 IEQc3.2:Construction IAQ Management Plan—Before Occupancy

Option 1: Full Flush-out Before Occupancy - Is there a Min. CF?

With Option 1, Path 1, we are expected to flush-out 14,000 cf/sf of outdoor air at 60 degrees temp. and 60% humidity min. Is there a minimum ventilation rate as with Path 2 which is 0.30 cf/min.? Our project just happens to have some extra time and we thought we would have to meet the after occupancy requirments (which we could not, based on the design of the HVAC in the base building). I believe it would be a manner of calculating the corrent amount of time to meet the 14,000, but could go to a lower outdoor air of o.15 cf/min. as this is the maximum output of the original system. Your thoughts?

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Profile picture for user dconnelly
Dylan Connelly
Mechanical Engineer
Integral Group
LEEDuser Expert
342 thumbs up

Thu, 09/22/2011 - 15:37

There is no minimum ventilation rate for Path 1. Just create a Flush Out Plan In writing, execute, trend the measurements in the space, and document.

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