[Equest-users] Redefining windows in DD Wizard

Alex Krickx akrickx at seriousmaterials.com
Mon Mar 21 13:15:50 PDT 2011


Regarding Nick's clarification,

I would expect that different window sizes have different frame-to-window areas, so getting the correct size of the window is important (A small window would have a greater frame-to-window area than a large window, so assuming identical frames - assuming double pane w/ aluminum frames a small window would have a worse U-factor than a large window).

Cheers,
Alex Krickx

Alex Krickx, LEED AP
Building Energy Specialist
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From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Nick Caton
Sent: Monday, March 21, 2011 11:18 AM
To: deepika khowal; Walson, Kristy
Cc: eQuest
Subject: Re: [Equest-users] Redefining windows in DD Wizard

Kristy,

Once you've started a custom window layout, I believe there's no going back to defining fenestrations as a WWR in the wizard mode for a given shell.

That said, I'd speculate that you might be able to look at a pair of dummy .pd2 files side by side in notepad, see what lines are added/changed within after the custom window layout dialog is engaged, then undo those changes in the target .pd2 file...  that might permit using the WWR inputs again.  I'd certainly save my work separately before exploring this.

I'd also point out that with a WWR < 40%, you have no compelling need to redefine your fenestration layout for a LEED/90.1 baseline, if that happens to be what you're up to ;).  Much extra discussion in the archives, if interested.

I'd submit a small clarification as well: eQuest does indeed consider window dimensions/locations with respect to various shading surfaces - solar loads and daylighting control calculations are not done purely on WWR.  This does become a non-issue however when doing 90.1 baselines, which are not self-shading nor do they have daylighting controls.

~Nick

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From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of deepika khowal
Sent: Monday, March 21, 2011 12:30 PM
To: Walson, Kristy
Cc: eQuest
Subject: Re: [Equest-users] Redefining windows in DD Wizard

I had gone through the same experience.
I couldnt find any location where you can directly change the WWR.
What i did was:
1. based on wall area and WWR calculate the area of window required to achieve that WWR.
then edit the window areas in the DD wizard which can give you correct results.
since equest calculates results based on % WWR and not on size of windows this approach works well for me.
however, if anyone has a better option, I would love to know that.
Thanks
Regards
Deepika
On Mon, Mar 21, 2011 at 10:12 AM, Walson, Kristy <kristy.walson at tlc-eng.com<mailto:kristy.walson at tlc-eng.com>> wrote:
Hi all,

Does anyone know how to redefine windows in a model as a % window-to-wall ratio once I've already create custom window placements in the DD Wizard?  I removed the custom windows and defined a percentage in Wizard Screen #6 (shown below), but my 3D viewer isn't showing these new windows.  Any help would be much appreciated.  Thanks!

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Kristy M. Walson, PE, LEED AP BD+C
Mechanical Engineer / Sustainable Design

TLC Engineering for Architecture
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