[Equest-users] Fenestration and Window to Wall Ratio

[Sunayana Jain]

Hi James,

As per my understanding, window wall ratio is considered for above grade walls only for each orientation of building (not floor to floor).

Thanks,

Sunayana Jain

LEED AP, EIT

Energy Engineering Specialist

----- Original Message -----
From: "James Newman" <James.Newman at me-engineers.com>
To: equest-users at lists.onebuilding.org
Sent: Tuesday, February 8, 2011 5:29:50 PM GMT -05:00 US/Canada Eastern
Subject: [Equest-users] Fenestration and Window to Wall Ratio





When calculating the window to wall ratio for your baseline building, should you calculate this percentage as 

  

·          an entire building? 

·          each building elevation? 

·          every floor elevation? 

  

Has anyone had an interpretation on this issue?  I was reading through the 90.1 User manual and discovered that both above grade walls and below grade walls should be considered for the wall to wall ratio which leads me to believe the calculation should be done as a whole building percentage. Just curious if someone knows the correct answer. 

  

Thanks, 

  

James M. Newman, EIT, LEED AP 

project engineer / energy analyst 

  
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