Forum discussion
NC-2009 IEQc8.2: Daylight and Views—Views
We have an existing historic dormitory with very large windows, but the sill height is at 42" high or more on 2 of the 3 floors. Has anyone succeeded in getting an exemption for the sill height for a historic building or is this just a credit that we can't get due to the existing conditions?
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Rick Ferrara
AIA, LEED BD+CGensler
118 thumbs up
April 23, 2011 - 10:17 am
No, I have the same condition- you simply do not get the credit.
Jill Perry, PE
ConsultantJill Perry, LLC
LEEDuser Expert
440 thumbs up
April 24, 2011 - 6:29 pm
I'm afraid Rick's right. Unless you can make the case that the occupants will be standing or sitting on, for example, laboratory stools (higher than typical chair height), this is not the credit for you.
Nancy Henderson
Managing MemberArchEcology, LLC
83 thumbs up
May 16, 2012 - 2:38 pm
This seems illogical to me. How can vision glazing be defined as between 30" and 90" and yet not work for views if it the sill is 42" or higher? This means a window with a sill of 30" and a head of 44" would work for views when one with a sill of 44" and a head of 7'-6" does not? This interpretation is counter to the way our field of vision works. I understand establishing the viewer height at 42" - but the line should not be parallel to the floor. What obstructs our view is totally dependant on how far away the obstruction is from the viewer.