[Equest-users] Spandrel Glass

John Aulbach jra_sac at yahoo.com
Wed Dec 5 16:11:50 PST 2018

Hi Dave
I am not in front of my eQuest computer. But I think the spandrel has the u value of glazing without a shading coefficient, so would it not then be opaque. Makes no sense to me for glazing to be in a wall parametric library. I also think it is 1/4 inch, so I would add another spandrel wall and board insulation behind it.
We need another Engineering Manual written !!

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  On Wed, Dec 5, 2018 at 3:59 PM, David Eldridge<DEldridge at grummanbutkus.com> wrote:   #yiv0991509060 #yiv0991509060 -- _filtered #yiv0991509060 {font-family:Helvetica;panose-1:2 11 6 4 2 2 2 2 2 4;} _filtered #yiv0991509060 {panose-1:2 4 5 3 5 4 6 3 2 4;} _filtered #yiv0991509060 {font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;} _filtered #yiv0991509060 {font-family:Roboto;}#yiv0991509060 #yiv0991509060 p.yiv0991509060MsoNormal, #yiv0991509060 li.yiv0991509060MsoNormal, #yiv0991509060 div.yiv0991509060MsoNormal {margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:New serif;}#yiv0991509060 a:link, #yiv0991509060 span.yiv0991509060MsoHyperlink {color:blue;text-decoration:underline;}#yiv0991509060 a:visited, #yiv0991509060 span.yiv0991509060MsoHyperlinkFollowed {color:purple;text-decoration:underline;}#yiv0991509060 span.yiv0991509060EmailStyle17 {font-family:sans-serif;color:#1F497D;}#yiv0991509060 .yiv0991509060MsoChpDefault {font-family:sans-serif;} _filtered #yiv0991509060 {margin:1.0in 1.0in 1.0in 1.0in;}#yiv0991509060 div.yiv0991509060WordSection1 {}#yiv0991509060 
Paul – to answer your question: painfully? It may not be that bad actually – what’s your base wall type? For a curtain wall that is half spandrel and half vision glass, make the exterior opaque surface equivalent to the spandrel sections as a defined opaque wall construction, and then add the vision glass to that – if you change the surface constructions in spreadsheet view it may not be that painful after all. The painful part will be deleting all of the current spandrel sections that are now defined as the base wall.
JRA – I’m not sure of the purpose of the spandrel glass type in the library, I don’t know if that window object model has the capability to perform as if it were an opaque surface although this spandrel glass definition may be available to be selected…I’m not sure it would be an accurate choice. I wonder if it is a research entry that isn’t meant for the modeling public. Anyone used it?
David S. Eldridge, Jr., P.E., LEED AP BD+C, BEMP, BEAP, HBDP
Direct: (847) 316-9224 | Mobile: (773)490-5038
Grumman/Butkus Associates| 820 Davis Street, Suite 300 | Evanston, IL 60201
Energy Efficiency Consultants and Sustainable Design Engineers
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From: Equest-users [mailto:equest-users-bounces at lists.onebuilding.org]On Behalf Of John Aulbach via Equest-users
Sent: Wednesday, December 05, 2018 5:39 PM
To: Paul Diglio <paul.diglio at sbcglobal.net>; Paul Diglio via Equest-users <equest-users at lists.onebuilding.org>; equest-users at onebuilding.org
Subject: Re: [Equest-users] Spandrel Glass
As I recall there IS a wall component called spandex glass in the Library. See if that solves your need.
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On Wed, Dec 5, 2018 at 3:33 PM, Paul Diglio via Equest-users
<equest-users at lists.onebuilding.org> wrote:
I have a building with a very large amount of spandrel glass panels, which I modeled as glass since this seemed to be the only way to insert the panels into the exterior walls.
I would somehow like to re-assign the spandrel panels as another exterior component so they will be counted as part of the exterior walls in the LV-D report instead of glass.
Any idea on how this can be done?
Thank you,
Paul Diglio
87 Fairmont Avenue 
New Haven, CT 06513 

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