WWR calculation by equest

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Hi all
I am looking at LV-D report to calculate the wwr of the building,
does the software include the frame area also while calculating window area?

when I manually calculate this, I always use the actual glass area (without
frames/ total wall areas)

can anyone explain which should be the right approach.
Thanks

Regards
Deepika

DEEPIKA KHOWAL

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Deepika,

I would think that the frame is included in the window area with just the
wall in the wall area. My assumption would be backed up by the treatment of
a the glass/frame as an entire window unit.

Hope that helps,

Carol

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I agree with Carol. When you create a window in eQuest, it ALWAYS includes the frame.

John Aulbach's picture
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thank you Carol and John

I also verified with ASHRAE and it says
"Window-Wall Ratio: The window-wall ratio is the ratio of vertical
fenestration area to gross exterior wall area. The fenestration area is the
rough opening, i.e., it includes the frame, sash, and other nonglazed window
components. The gross exterior wall is measured horizontally from the
exterior surface; it is measured vertically from the top of the floor to the
bottom of the roof. The gross exterior wall area includes below-grade as
well as above-grade walls. It is necessary to calculate the window-wall
ratio with all compliance options, since this
information
is need with the prescriptive option, the trade-off option, and the energy
cost budget
method."

DEEPIKA KHOWAL

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