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Can LEED 2009 projects elect to follow ASHRAE 62.1-2010 for this prerequisite?

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NC-2009 IEQp1:Minimum IAQ Performance

IEQp1 for Residencial Buildings

Hello, We have a 20-storey residential building, which will be naturally ventilated, so to meet IEQp1, naturally ventilated spaces shall be permanently open to the outside at a distance of 8 meters (25ft) of a wall or opening useful in roofs, the opening area must be at least 4% of the net occupiable floor area. The question is: Does this percentage should be constantly open to ensure ventilation, or is it sufficient that this percentage is only operable?

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Tue, 10/23/2012 - 19:59

Hi Diego Section 5.1.1 of ASHRAE 62.12007, speaks about the space being "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." Based on this, it is enough that the openings to the outdooors are operable and don't need to be constantly open. I hope this helps

Fri, 08/23/2019 - 16:02

Hi, Is this also applicable to residential v4 projects? 

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