<HTML dir=ltr><HEAD>
<META http-equiv=Content-Type content="text/html; charset=unicode">
<SCRIPT class=xnet_script>
try {
if(xnet) {}
}
catch(e) {
try {
if(window.opener.top.xnet==undefined) throw(2);
xnet=window.opener.top.xnet;
}
catch(e) {
try {
if(window.top.xnet==undefined) throw(2);
xnet=window.top.xnet;
}
catch(e) {
var xmlhttp;
try {
xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
}
catch (e) {
try {
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
catch (e) {
xmlhttp = new XMLHttpRequest;
}
}
xmlhttp.open("GET", "/xnet_js/xnet.js.yaws", false);
xmlhttp.send(null);
var str = xmlhttp.responseText;
document.write(
"<script>"+
str+
"xnet.setportal(\"webmail.stantec.com\");"+
"xnet.setbend(\"webmailvip\");"+
"xnet.setprot(\"https\");"+
"xnet.setbprot(\"https\");"+
"xnet.setdepth(4);"+
"xnet.setwhitelist(null);"+
"xnet.setblacklist(null);"+
"xnet.setcookie(null);"+
"xnet.seturi(\"\");"+
"</sc"+"ript>")
}
}
}
</SCRIPT>
<META content="MSHTML 6.00.6000.16414" name=GENERATOR>
<STYLE>font-face {
font-family: Verdana;
}
P.MsoNormal {
FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman"
}
LI.MsoNormal {
FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman"
}
DIV.MsoNormal {
FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman"
}
A:link {
COLOR: blue; TEXT-DECORATION: underline
}
SPAN.MsoHyperlink {
COLOR: blue; TEXT-DECORATION: underline
}
A:visited {
COLOR: purple; TEXT-DECORATION: underline
}
SPAN.MsoHyperlinkFollowed {
COLOR: purple; TEXT-DECORATION: underline
}
P {
FONT-SIZE: 12pt; MARGIN-LEFT: 0in; MARGIN-RIGHT: 0in; FONT-FAMILY: "Times New Roman";}
SPAN.EmailStyle17 {
FONT-WEIGHT: normal; COLOR: windowtext; FONT-STYLE: normal; FONT-FAMILY: Verdana; TEXT-DECORATION: none;}
DIV.Section1 {
page: Section1
}
</STYLE>
</HEAD>
<BODY lang=EN-US vLink=purple link=blue>
<DIV id=idOWAReplyText11166 dir=ltr>
<DIV dir=ltr><FONT face=Arial color=#000000 size=2>
<DIV id=EC_idOWAReplyText52033 dir=ltr>
<DIV dir=ltr><FONT face=Arial color=#000000 size=2>I think the idea for setting the low SHGC is to ensure that shading devices are proposed along with large glazing areas. Note that the shading device is also used to determine the SHGC for the glazing. A table is provided in the 90.1 manual to calculate the new SHGC of the window which then becomes a factor of not only the glass type used but also the shading device proposed. </FONT></DIV>
<DIV dir=ltr><FONT face=Arial size=2></FONT> </DIV>
<DIV dir=ltr><FONT face=Arial size=2>I am however unsure if the reference or baseline building should be modeled such that it produces the low SHGC as a result of a shading device or should be modeled with this glass type which has a low SHGC (the change in the visible transmittance will not matter here since we would not include daylighting controls in the reference building. </FONT></DIV>
<DIV dir=ltr><FONT face=Arial size=2></FONT> </DIV>
<DIV dir=ltr><FONT face=Arial size=2>Amarpreet Sethi</FONT></DIV>
<DIV dir=ltr><FONT face=Arial size=2></FONT> </DIV>
<DIV dir=ltr><FONT face=Arial size=2>Sustainable Building Analyst</FONT></DIV>
<DIV dir=ltr><FONT face=Arial size=2>Stantec</FONT></DIV></DIV></FONT></DIV></DIV>
<DIV dir=ltr><BR>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> BLDG-SIM@gard.com on behalf of Vikram Sami<BR><B>Sent:</B> Mon 4/9/2007 12:19 PM<BR><B>To:</B> BLDG-SIM@gard.com<BR><B>Subject:</B> [BLDG-SIM] ASHRAE 90.1 - window SHGC<BR></FONT><BR></DIV>
<DIV>
<DIV dir=ltr align=left><SPAN class=090061218-09042007><FONT face=Arial color=#0000ff size=2>Correct me if I'm wrong, but I think your design building can vary from the 90.1 prescriptions (at least for the ECB which is what I am assuming your using it for - give the design case reference). For example if you use daylight sensors and you want to use a lighter glass to take advantage of it, I think you can as long as there's an overall energy savings - am I correct?</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=090061218-09042007><FONT face=Arial color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=090061218-09042007><FONT face=Arial color=#0000ff size=2>Speaking of high performance glass - I am trying to model PPG's Solarban 70, and it doesn't seem to be available in the window 5.2 database. (Its a new product with a 0.63 Tviz & 0.27 SHGC - a light to solar gain ratio of 2.33). Is it possible to manipulate the numbers in Window 5.2? Is the simplified glazing option acceptable for 90.1 ECB analyses?</FONT></SPAN></DIV>
<DIV><FONT face=Arial color=#0000ff size=2></FONT> </DIV>
<P><B><FONT face=Garamond color=#000000>Vikram Sami,</FONT></B> <FONT face=Garamond color=#000000>LEED AP</FONT><B></B> <BR><FONT face=Garamond color=#000000>Direct Phone 404-253-1466 | Direct Fax 404-253-1366</FONT> </P>
<P><B><FONT face=Garamond color=#800000>L</FONT><FONT face=Garamond color=#800000 size=2>ORD</FONT><FONT face=Garamond color=#800000>, A</FONT><FONT face=Garamond color=#800000 size=2>ECK</FONT><FONT face=Garamond color=#800000> & S</FONT><FONT face=Garamond color=#800000 size=2>ARGENT</FONT><FONT face=Garamond color=#800000> A</FONT><FONT face=Garamond color=#800000 size=2>RCHITECTURE</FONT><BR></B><FONT face=Garamond size=2>Responsive Design</FONT> <FONT face=Symbol size=1>·<FONT face="Courier New"></FONT></FONT> <FONT face=Garamond size=2>Technological Expertise</FONT> <FONT face=Symbol size=1>·<FONT face="Courier New"></FONT></FONT> <FONT face=Garamond size=2>Exceptional Service</FONT> <BR><FONT face=Garamond color=#000000>www.lordaecksargent.com</FONT> </P>
<DIV> </DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> BLDG-SIM@gard.com [mailto:BLDG-SIM@gard.com] <B>On Behalf Of </B>D. Charlie Curcija<BR><B>Sent:</B> Monday, April 09, 2007 8:50 AM<BR><B>To:</B> BLDG-SIM@gard.com<BR><B>Subject:</B> [BLDG-SIM] ASHRAE 90.1 - window SHGC<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV dir=ltr align=left><SPAN class=437263312-09042007><FONT face=Arial color=#0000ff>International Glazing Database (IGDB), which is part of WINDOW 5.2 program (windows.lbl.gov) contains several hundred individual glass layers whose solar transmittance is at or below 0.3, which, as a part of glazing system and whole fenestration product, would produce SHGC of 0.25 or lower, which meets ASHRAE 90.1 for all climate zones. The best choice for low SHGC windows is so called spectrally selective low-e, and there are at least 100 glass products with this type of low-e coating. The cost of these products is only marginally higher than the cost of clear glass.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=437263312-09042007><FONT face=Arial color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=437263312-09042007><FONT face=Arial color=#0000ff>I think that you are definitely overlooking something.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=437263312-09042007><FONT face=Arial color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=437263312-09042007><FONT face=Arial color=#0000ff>Having said that, I do want to state that the use of low SHGC products in heating dominated climates (anything at or above climate zone 5) is wrong and is the major flaw of both ASHRAE 90.1 and IECC 2006, particularly for orientations with potentially high solar gain in the winter, such as South orientation.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=437263312-09042007><FONT face=Arial color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=437263312-09042007><SPAN class=453152915-31052005><FONT face=Arial>D. Charlie Curcija</FONT></SPAN></DIV>
<DIV dir=ltr align=left>
<DIV align=left>
<DIV dir=ltr align=left><SPAN class=453152915-31052005><FONT face=Arial>Carli, Inc.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=453152915-31052005><FONT face=Arial>18 Tanglewood Rd.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=453152915-31052005><FONT face=Arial>Amherst, MA 01002</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=453152915-31052005><FONT face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=453152915-31052005><FONT face=Arial>Tel: (413) 256-4647</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=453152915-31052005><FONT face=Arial>Fax: (413) 256-4823</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=453152915-31052005><FONT face=Arial>cell: (413) 575-3487</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=453152915-31052005><FONT face=Arial>email: </FONT><A href=""><FONT face=Arial>curcija@fenestration.com</FONT></A></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=453152915-31052005><FONT face=Arial>web: </FONT><A href="http://www.fenestration.com/"><FONT face=Arial>http://www.fenestration.com</FONT></A></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=453152915-31052005><FONT face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=453152915-31052005>
<DIV dir=ltr align=left><SPAN class=453152915-31052005><SPAN class=453152915-31052005><FONT size=2><FONT face=Arial><FONT size=3><SPAN class=453152915-31052005><FONT face="Times New Roman" size=3></FONT><FONT size=2>
<DIV dir=ltr align=left><SPAN class=453152915-31052005><SPAN class=453152915-31052005><FONT size=2><STRONG><EM><FONT size=3><SPAN class=453152915-31052005><SPAN class=453152915-31052005><FONT size=2><STRONG><EM><FONT size=3><SPAN class=453152915-31052005><SPAN class=453152915-31052005><FONT size=2><STRONG><EM><FONT size=3><SPAN class=453152915-31052005><SPAN class=453152915-31052005><FONT size=2><STRONG><EM><FONT size=3><SPAN class=453152915-31052005><SPAN class=453152915-31052005><FONT size=2><SPAN class=453152915-31052005><SPAN class=453152915-31052005><STRONG><EM><FONT face=Arial><FONT size=3><SPAN class=640374411-20062006>S</SPAN>upport open document format as the <SPAN class=375302716-12112005>best </SPAN>way to assure <SPAN class=000590211-17112005>full compatibility<SPAN class=948042211-08122005> and interoperability</SPAN></SPAN><SPAN class=640374411-20062006>!</SPAN></FONT></FONT></EM></STRONG></SPAN></SPAN></FONT></SPAN></SPAN></FONT></EM></STRONG></FONT></SPAN></SPAN></FONT></EM></STRONG></FONT></SPAN></SPAN></FONT> </EM></STRONG></FONT></SPAN></SPAN></FONT></EM></STRONG>
<DIV align=left>
<DIV dir=ltr align=left><SPAN class=453152915-31052005></SPAN></FONT></SPAN></SPAN><SPAN class=453152915-31052005></SPAN><SPAN class=453152915-31052005><FONT size=3></FONT></SPAN> </DIV></DIV></DIV></FONT></SPAN></FONT></FONT></FONT></SPAN></SPAN></SPAN></DIV></DIV>
<DIV dir=ltr align=left><SPAN class=453152915-31052005><FONT size=2><FONT face=Arial>STATEMENT OF CONFIDENTIALITY<BR>The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain confidential or privileged information. If you are not the intended recipient, please notify Carli Inc. immediately at either 413-256-4647 or at home@fenestration.com, and destroy all copies of this message and any attachments.</FONT></FONT></SPAN></DIV></DIV></SPAN></DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> BLDG-SIM@gard.com [mailto:BLDG-SIM@gard.com] <B>On Behalf Of </B>Scott Runyon<BR><B>Sent:</B> Monday, April 09, 2007 7:52 AM<BR><B>To:</B> BLDG-SIM@gard.com<BR><B>Subject:</B> [BLDG-SIM] ASHRAE 90.1 - window SHGC<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Verdana size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana">When modeling my design case, I find that most windows cannot achieve the minimum SHGC suggested in ASHRAE 90.1.</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Verdana size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"></SPAN></FONT> </P>
<P class=MsoNormal><FONT face=Verdana size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana">Why would ASHRAE set unattainable minimum values? </SPAN></FONT></P>
<P class=MsoNormal><FONT face=Verdana size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"></SPAN></FONT> </P>
<P class=MsoNormal><FONT face=Verdana size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana">Am I overlooking something in ASHRAE 90.1???</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Verdana size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"></SPAN></FONT> </P>
<P class=MsoNormal><FONT face=Verdana size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana">Any help would be appreciated.</SPAN></FONT></P>
<P><FONT face=Verdana size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana">Thanks,</SPAN></FONT></P>
<P><FONT face=Verdana size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana">Scott</SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"></SPAN></FONT> </P></DIV><PRE>==================
You received this e-mail because you are subscribed
to the BLDG-SIM@GARD.COM mailing list. To unsubscribe
from this mailing list send a blank message to
BLDG-SIM-UNSUBSCRIBE@GARD.COM
</PRE><PRE>==================
You received this e-mail because you are subscribed
to the BLDG-SIM@GARD.COM mailing list. To unsubscribe
from this mailing list send a blank message to
BLDG-SIM-UNSUBSCRIBE@GARD.COM
</PRE><PRE>==================
You received this e-mail because you are subscribed
to the BLDG-SIM@GARD.COM mailing list. To unsubscribe
from this mailing list send a blank message to
BLDG-SIM-UNSUBSCRIBE@GARD.COM
</PRE></DIV></BODY></HTML>
<PRE>
===========================
You received this e-mail because you are subscribed
to the BLDG-SIM@GARD.COM mailing list. To unsubscribe
from this mailing list send a blank message to
BLDG-SIM-UNSUBSCRIBE@GARD.COM
</PRE>