Forum discussion
NC-2009 IEQp1: Minimum IAQ Performance
Hi,
We´re working on a project that is pursuing IEQ P1 via natural ventilation. The 4% of ventilation surface required could be achieved using operable windows? Or it is mandatory the use of permanent vents?
Thanks for the answer
Guillermo
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Is outdoor air quality testing required in a space using natural ventilation?
What options are available to projects outside the US to meet this prerequisite?
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?
Luis Miguel Diazgranados
Green Factory125 thumbs up
January 23, 2012 - 1:08 pm
Hi Guillermo:
ASHRAE 62.1 clearly states: "Naturally ventilated
spaces shall be permanently open to and within 8 m
(25 ft) of operable wall or roof openings to the outdoors, the
openable area of which is a minimum of 4% of the net occupiable
floor area."
So the answer to your question would be: yes, operable windows can be used. Hope it helps.
Guillermo T. Adamo
ArchitectSursolar
55 thumbs up
January 23, 2012 - 8:34 pm
Hi Luis
Thanks for the reply. The confusion came up with the term "permanently" i thought that only vents were allowed to satisfy the credit since operable windows could be closed by employees.
Thanks again