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FAQs about IEQp1 :

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?

Is outdoor air quality testing required in a space using natural ventilation?

For a space designed to be naturally ventilated, can operable windows or vents be used to satisfy the 62.1-2007 requirements?

What options are available to projects outside the US to meet this prerequisite?

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Forum discussion

CI-2009 IEQp1:Minimum IAQ Performance

Local Code

Profile picture for user lindawan
Linda Wan
Project Engineer
TRC Energy Services
LEEDuser Basic Member
9 thumbs up

Does anyone know if for ventilation requirements Title 24 - 2005 is acceptable in lieu of ASHRAE 62.1-2007? I know for EAc1 Title 24 - 2005 is seen as equivalent to ASHRAE 90.1- 2007. Additionally, it is written in the book that "local code can be used in lieu of ASHRAE when the local code is more stringent."

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Profile picture for user rchan
Roger Chang
Principal, Energy and Engineering Leader
DLR Group | Westlake Reed Leskosky
LEEDuser Expert
267 thumbs up

Wed, 11/23/2011 - 15:40

This one is challenging to answer, because T24-2005 doesn't include the same procedures as ASHRAE 62.1 for multi-zone recirculating systems (e.g. VAV). If you're working with a dedicated outdoor air system and the effective airflow rates are greater per person than ASHRAE 62.1, then I think it's fine to use T24.

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