I have seen several references to View Factor 3 and cannot find any definition.
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NC-2009 IEQc8.2: Daylight and Views—Views
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View Factor 3
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FAQs about IEQc8.2:
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TODD REED
Energy Program SpecialistPA DMVA
LEEDuser Expert
889 thumbs up
April 5, 2017 - 8:44 am
Read Heschong and Mahone Group study: Windows and Offices;A Study of Office Worker Performance and the Indoor Environment. Reference and definitions of view factor start after page 40.
Michele Helou
PrincipalSage Design & Consulting
72 thumbs up
July 17, 2017 - 10:20 am
Reviewing the H-M study - it looks like the view factor is a quality factor from a given workstation or particular seated position. How is a 'space' supposed to be given a view factor?
TODD REED
Energy Program SpecialistPA DMVA
LEEDuser Expert
889 thumbs up
August 17, 2017 - 9:28 am
Michele, a space is not given a factor. Its the area within that space that offers the occupants at a view factor of 3. For example, a deep space with one window. There will be a distance within that space that the view factor is less than 3. So you then determine that distance and calculate the area. You have to put yourself in the space, or if you have it modeled, to determine where you no longer have that factor. Extreme angles etc.
Sadhana J
May 12, 2022 - 2:42 am
Hi Todd,
I hope to understand view factor. I read the guide and I am concluding that view factor of 3 has to do with the window height and the amount of daylight or distance upto which it can provide views within the indoor space which should be three times the window height, is this understanding correct?