<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns:p="urn:schemas-microsoft-com:office:powerpoint" xmlns:a="urn:schemas-microsoft-com:office:access" xmlns:dt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882" xmlns:s="uuid:BDC6E3F0-6DA3-11d1-A2A3-00AA00C14882" xmlns:rs="urn:schemas-microsoft-com:rowset" xmlns:z="#RowsetSchema" xmlns:b="urn:schemas-microsoft-com:office:publisher" xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" xmlns:c="urn:schemas-microsoft-com:office:component:spreadsheet" xmlns:odc="urn:schemas-microsoft-com:office:odc" xmlns:oa="urn:schemas-microsoft-com:office:activation" xmlns:html="http://www.w3.org/TR/REC-html40" xmlns:q="http://schemas.xmlsoap.org/soap/envelope/" xmlns:rtc="http://microsoft.com/officenet/conferencing" xmlns:D="DAV:" xmlns:Repl="http://schemas.microsoft.com/repl/" xmlns:mt="http://schemas.microsoft.com/sharepoint/soap/meetings/" xmlns:x2="http://schemas.microsoft.com/office/excel/2003/xml" xmlns:ppda="http://www.passport.com/NameSpace.xsd" xmlns:ois="http://schemas.microsoft.com/sharepoint/soap/ois/" xmlns:dir="http://schemas.microsoft.com/sharepoint/soap/directory/" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:dsp="http://schemas.microsoft.com/sharepoint/dsp" xmlns:udc="http://schemas.microsoft.com/data/udc" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:sub="http://schemas.microsoft.com/sharepoint/soap/2002/1/alerts/" xmlns:ec="http://www.w3.org/2001/04/xmlenc#" xmlns:sp="http://schemas.microsoft.com/sharepoint/" xmlns:sps="http://schemas.microsoft.com/sharepoint/soap/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:udcs="http://schemas.microsoft.com/data/udc/soap" xmlns:udcxf="http://schemas.microsoft.com/data/udc/xmlfile" xmlns:udcp2p="http://schemas.microsoft.com/data/udc/parttopart" xmlns:wf="http://schemas.microsoft.com/sharepoint/soap/workflow/" xmlns:dsss="http://schemas.microsoft.com/office/2006/digsig-setup" xmlns:dssi="http://schemas.microsoft.com/office/2006/digsig" xmlns:mdssi="http://schemas.openxmlformats.org/package/2006/digital-signature" xmlns:mver="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns:mrels="http://schemas.openxmlformats.org/package/2006/relationships" xmlns:spwp="http://microsoft.com/sharepoint/webpartpages" xmlns:ex12t="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:ex12m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:pptsl="http://schemas.microsoft.com/sharepoint/soap/SlideLibrary/" xmlns:spsl="http://microsoft.com/webservices/SharePointPortalServer/PublishedLinksService" xmlns:Z="urn:schemas-microsoft-com:" xmlns:st="" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv=Content-Type content="text/html; charset=us-ascii">
<meta name=Generator content="Microsoft Word 12 (filtered medium)">
<!--[if !mso]>
<style>
v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style>
<![endif]-->
<style>
<!--
/* Font Definitions */
@font-face
{font-family:Cambria;
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Webdings;
panose-1:5 3 1 2 1 5 9 6 7 3;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
h1
{mso-style-priority:9;
mso-style-link:"Heading 1 Char";
margin-top:12.0pt;
margin-right:0in;
margin-bottom:3.0pt;
margin-left:.25in;
text-indent:-.25in;
page-break-after:avoid;
mso-list:l0 level1 lfo2;
font-size:16.0pt;
font-family:"Arial","sans-serif";}
h2
{mso-style-priority:9;
mso-style-link:"Heading 2 Char";
margin-top:12.0pt;
margin-right:0in;
margin-bottom:3.0pt;
margin-left:.55in;
text-indent:-.3in;
page-break-after:avoid;
mso-list:l0 level2 lfo2;
font-size:14.0pt;
font-family:"Arial","sans-serif";
font-style:italic;}
h3
{mso-style-priority:9;
mso-style-link:"Heading 3 Char";
margin-top:12.0pt;
margin-right:0in;
margin-bottom:3.0pt;
margin-left:0in;
page-break-after:avoid;
font-size:13.0pt;
font-family:"Arial","sans-serif";}
p.MsoBodyText, li.MsoBodyText, div.MsoBodyText
{mso-style-priority:99;
mso-style-link:"Body Text Char";
margin-top:0in;
margin-right:0in;
margin-bottom:6.0pt;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0in;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";}
span.Heading1Char
{mso-style-name:"Heading 1 Char";
mso-style-priority:9;
mso-style-link:"Heading 1";
font-family:"Cambria","serif";
color:#365F91;
font-weight:bold;}
span.Heading2Char
{mso-style-name:"Heading 2 Char";
mso-style-priority:9;
mso-style-link:"Heading 2";
font-family:"Cambria","serif";
color:#4F81BD;
font-weight:bold;}
span.Heading3Char
{mso-style-name:"Heading 3 Char";
mso-style-priority:9;
mso-style-link:"Heading 3";
font-family:"Cambria","serif";
color:#4F81BD;
font-weight:bold;}
span.BodyTextChar
{mso-style-name:"Body Text Char";
mso-style-priority:99;
mso-style-link:"Body Text";
font-family:"Calibri","sans-serif";}
p.appendixheading3, li.appendixheading3, div.appendixheading3
{mso-style-name:appendixheading3;
margin-top:6.0pt;
margin-right:0in;
margin-bottom:6.0pt;
margin-left:0in;
font-size:13.0pt;
font-family:"Times New Roman","serif";
font-weight:bold;}
p.oprheading2, li.oprheading2, div.oprheading2
{mso-style-name:oprheading2;
margin-top:6.0pt;
margin-right:0in;
margin-bottom:12.0pt;
margin-left:0in;
font-size:14.0pt;
font-family:"Arial","sans-serif";
font-weight:bold;
font-style:italic;}
p.link1, li.link1, div.link1
{mso-style-name:link1;
margin-top:12.0pt;
margin-right:0in;
margin-bottom:12.0pt;
margin-left:.25in;
text-indent:-.25in;
page-break-after:avoid;
mso-list:l0 level1 lfo2;
font-size:16.0pt;
font-family:"Times New Roman","serif";
font-weight:bold;}
p.tabletext, li.tabletext, div.tabletext
{mso-style-name:tabletext;
margin:0in;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Times New Roman","serif";}
p.systemmanualtitle, li.systemmanualtitle, div.systemmanualtitle
{mso-style-name:systemmanualtitle;
margin:0in;
margin-bottom:.0001pt;
text-align:center;
font-size:16.0pt;
font-family:"Times New Roman","serif";}
p.section1, li.section1, div.section1
{mso-style-name:section1;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman","serif";
color:#000066;}
span.EmailStyle28
{mso-style-type:personal;
font-family:"Arial","sans-serif";
color:windowtext;}
span.EmailStyle29
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.EmailStyle30
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.EmailStyle31
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.EmailStyle32
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.EmailStyle33
{mso-style-type:personal;
font-family:"Arial","sans-serif";
color:navy;}
span.EmailStyle36
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page Section1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.5in;}
div.Section1
{page:Section1;}
/* List Definitions */
@list l0
{mso-list-id:106119111;
mso-list-template-ids:-2130145578;}
@list l0:level1
{mso-level-style-link:"Heading 1";
mso-level-tab-stop:.25in;
mso-level-number-position:left;
margin-left:.25in;
text-indent:-.25in;}
@list l0:level2
{mso-level-style-link:"Heading 2";
mso-level-text:"%1\.%2\.";
mso-level-tab-stop:.75in;
mso-level-number-position:left;
margin-left:.55in;
text-indent:-.3in;}
@list l0:level3
{mso-level-text:"%1\.%2\.%3\.";
mso-level-tab-stop:1.0in;
mso-level-number-position:left;
margin-left:.85in;
text-indent:-.35in;}
@list l0:level4
{mso-level-text:"%1\.%2\.%3\.%4\.";
mso-level-tab-stop:1.5in;
mso-level-number-position:left;
margin-left:1.2in;
text-indent:-.45in;}
@list l0:level5
{mso-level-text:"%1\.%2\.%3\.%4\.%5\.";
mso-level-tab-stop:2.0in;
mso-level-number-position:left;
margin-left:1.55in;
text-indent:-.55in;}
@list l0:level6
{mso-level-text:"%1\.%2\.%3\.%4\.%5\.%6\.";
mso-level-tab-stop:2.25in;
mso-level-number-position:left;
margin-left:1.9in;
text-indent:-.65in;}
@list l0:level7
{mso-level-text:"%1\.%2\.%3\.%4\.%5\.%6\.%7\.";
mso-level-tab-stop:2.75in;
mso-level-number-position:left;
margin-left:2.25in;
text-indent:-.75in;}
@list l0:level8
{mso-level-text:"%1\.%2\.%3\.%4\.%5\.%6\.%7\.%8\.";
mso-level-tab-stop:3.25in;
mso-level-number-position:left;
margin-left:2.6in;
text-indent:-.85in;}
@list l0:level9
{mso-level-text:"%1\.%2\.%3\.%4\.%5\.%6\.%7\.%8\.%9\.";
mso-level-tab-stop:3.5in;
mso-level-number-position:left;
margin-left:3.0in;
text-indent:-1.0in;}
ol
{margin-bottom:0in;}
ul
{margin-bottom:0in;}
-->
</style>
<!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="2050" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang=EN-US link=blue vlink=purple>
<div class=Section1>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I agree with Jon’s comments about specification of
products as being a small portion of how much infiltration a building will
have, not only do construction practices play a role but also wind profiles on
the building, whether the mechanical systems are controlling building pressure,
whether the building is tall enough to have a stack effect, building shape etc…
Even in performing a winter load calculation and a summer load calculation we
usually change the infiltration rates slightly because average winter wind
speeds are greater than summer wind speeds.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>If infiltration is going to be accounted for as a savings in
energy modeling, I would think that building leakage testing (similar to duct
leakage testing) and envelope commissioning would need to become more prominent
in our business. ASHRAE has funded some studies on infiltration but the
data I have seen has been for residential construction.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><b><span style='font-family:"Cambria","serif";color:#1F497D'><img
width=268 height=80 id="Picture_x0020_1"
src="cid:image002.png@01CA2636.DAC280F0"
alt="cid:image003.png@01C9AB43.F0BEE290"></span></b><span style='font-size:
11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><b><span style='font-family:"Cambria","serif";color:#1F497D'>Robert
Gengelbach, PE, LEED</span></b><span style='font-size:8.0pt;font-family:"Cambria","serif";
color:#1F497D;position:relative;top:-3.0pt;mso-text-raise:3.0pt'>®</span><b><span
style='font-size:11.0pt;font-family:"Cambria","serif";color:#1F497D'> </span></b><b><span
style='font-family:"Cambria","serif";color:#1F497D'>AP<o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-family:"Cambria","serif";color:#1F497D'>Sustainable
Mechanical Design Associates, LLC<o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>89 Monroe Center NW<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Suite 302<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Grand Rapids, MI 49503<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>P: (616) 776-9009<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>F: (616) 776-9010<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>C: (616) 570-2329<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><a href="mailto:rgengelbach@sustainablemech.com">rgengelbach@sustainablemech.com</a><o:p></o:p></span></p>
<p class=MsoNormal><u><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p><span style='text-decoration:none'> </span></o:p></span></u></p>
<p class=MsoNormal><span style='font-size:18.0pt;font-family:Webdings;
color:green'>P</span><b><i><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:navy'> </span></i></b><b><i><span style='font-size:11.0pt;font-family:
"Calibri","sans-serif";color:green'>Please print only if necessary</span></i></b><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Jon Evans<br>
<b>Sent:</b> Tuesday, August 25, 2009 9:09 AM<br>
<b>To:</b> sheffer@energyopportunities.com; 'Paul Grahovac';
bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Bldg-sim] Air leakage, LEED, and Appendix G of ASHRAE 90.1<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>In my experience modeling of infiltration has nothing to do with
actual infiltration in a constructed building. How much infiltration
results in an actual building is 99.9% construction and 0.1% design and
specification. A well design building to minimize infiltration, with poor
attention to details during construction and sloppy workmanship can end up
having more infiltration than an average design with a good construction
team. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>I have looked in many plenums only to see daylight and cold-wintery
air flowing into the building, even on LEED projects.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>These issues make it very difficult to justify infiltration savings
in an energy model.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<div>
<p class=section1 style='margin:0in;margin-bottom:.0001pt'><strong><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>Jon
Evans, PE, LEED AP</span></strong><strong><span style='color:black'><o:p></o:p></span></strong></p>
<p class=section1 style='margin:0in;margin-bottom:.0001pt'><em><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;
font-style:normal'>Project Engineer | jevans@sustaineng.com</span></em><em><span
style='font-style:normal'><o:p></o:p></span></em></p>
<p class=section1 style='margin:0in;margin-bottom:.0001pt'><em><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;
font-style:normal'><o:p> </o:p></span></em></p>
<p class=section1 style='margin:0in;margin-bottom:.0001pt'><img border=0
width=185 height=69 id="_x0000_i1025" src="cid:image003.jpg@01CA2636.DAC280F0"><em><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;
font-style:normal'><o:p></o:p></span></em></p>
<p class=section1 style='margin:0in;margin-bottom:.0001pt'><em><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;
font-style:normal'><o:p> </o:p></span></em></p>
<p class=section1 style='margin:0in;margin-bottom:.0001pt'><em><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;
font-style:normal'>431 Charmany Drive, Suite 102 | Madison, Wisconsin 53719<o:p></o:p></span></em></p>
<p class=section1 style='margin:0in;margin-bottom:.0001pt'><em><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;
font-style:normal'>608.231.9664 ext. 13 | Fax: 608.231.9665<o:p></o:p></span></em></p>
<p class=section1 style='margin:0in;margin-bottom:.0001pt'><em><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";font-style:normal'><a
href="http://www.sustaineng.com/"><span style='color:black'>www.sustaineng.com</span></a></span></em><em><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy;font-style:
normal'><o:p></o:p></span></em></p>
<p class=section1 style='margin:0in;margin-bottom:.0001pt'><em><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy;font-style:
normal'><o:p> </o:p></span></em></p>
<p class=section1 style='margin:0in;margin-bottom:.0001pt'><em><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:gray'>2009 Dane
County Small Business Award Recipient</span></em><span class=MsoHyperlink><i><span
style='color:gray'><o:p></o:p></span></i></span></p>
</div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<div>
<div class=MsoNormal align=center style='text-align:center'><span
style='color:#000066'>
<hr size=2 width="100%" align=center>
</span></div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#000066'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#000066'> Marcus Sheffer [mailto:sheffer@energyopportunities.com] <br>
<b>Sent:</b> Monday, August 24, 2009 8:22 AM<br>
<b>To:</b> 'Paul Grahovac'; bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Bldg-sim] Air leakage, LEED, and Appendix G of ASHRAE 90.1</span><span
style='color:#000066'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='color:#000066'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>As I understand it the issue is that the 90.1 Standard does not
establish a base line condition for air leakage so no savings can be claimed.
I certainly agree that the savings are real and should be counted. I know
that the Appendix G committee has this issue on their extensive “to
do” list.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Marcus Sheffer, Chair – USGBC EA TAG<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>7group<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#000066'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#000066'> bldg-sim-bounces@lists.onebuilding.org [mailto:bldg-sim-bounces@lists.onebuilding.org]
<b>On Behalf Of </b>Paul Grahovac<br>
<b>Sent:</b> Wednesday, August 19, 2009 7:00 PM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] Air leakage, LEED, and Appendix G of ASHRAE 90.1<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><span style='color:#000066'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>The National Institute of Standards and Technology (NIST) did an
extensive study documenting a greater than 40% natural gas savings and a
greater than 25% electricity savings across the nation for building energy
consumption if buildings were uniformly constructed with air barrier systems installed.
They evaluated 116 existing buildings and computer modeled several different
building types. The purpose of their study was to provide information to
ASHRAE concerning whether it would be desirable to add an air barrier
requirement to ASHRAE 90.1.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>As a result, I’ve always thought that Appendix G to ASHRAE
90.1 allows you to change the air leakage rate off the default and onto a rate
corresponding to an air barrier installation, so that you could claim LEED
points for the corresponding energy savings. However, an architect at a
presentation I did said you could not do that under the LEED and ASHRAE
requirements. (I know the models will do it, because I’ve done it
on the TRANE model and obtained results that support the NIST findings.)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>I see in Appendix G that: “G3.1.2.5. <b>Ventilation</b>.
Minimum <i>outdoor air</i> ventilation rates shall be the same for the <i>proposed</i>
and <i>baseline building designs</i>.” However, I searched the
document for “outdoor air ventilation” and the phrase occurs only
in the context of mechanical systems that are designed to intentionally bring
air into the building. If this section is the basis for concluding that
air leakage barriers should be left out of the modeling, then I have trouble
understanding why.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'>Appendix G says that all
components of the building are to be modeled as designed. That would
preclude modeling as if an air barrier system did not exist in the
design. It says the baseline building model is to have steel-framed
above-grade walls, and it is silent about the design building, but the
User’s Manual says that if the design building walls are block or cast
concrete, then “the mass is credited in the building performance rating
method.” Likewise, if the walls are wood stud instead of steel,
then the Manual says credit is given for the superior energy performance of
wood frame versus steel frame. The User’s Manual states that
it: “</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#000066'>Offers information on the intent and application of Standard
90.1.”</span><span style='color:#000066'> </span><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>Given
these examples in the Manual based on existing thermal mass energy-saving data
and wood-versus-steel stud energy data, it is difficult to conclude that a wall
that is constructed with materials meeting the air leakage limits and
installation requirements of the Air Barrier Association of America and
determined to produce significant energy savings by the NIST study based on
those same limits and requirements should be modeled as if it leaked air like a
building without an air barrier. </span><span style='color:#000066'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>Please let me know what you think, and if you know of any reason
why it is not proper to change the air leakage rate through the building
envelope in the design model to show the benefit of air barriers.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>Thanks,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'>Paul Grahovac, LEED AP<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'>R-GUARD Air & Water-Resistive
Barrier Product Manager<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'>PROSOCO, Inc.<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'>3741 Greenway Circle<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'>Lawrence, Kansas 66046<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'>(785) 830-7355<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'>(888) 376-3417 fax<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'><a
href="mailto:pgrahovac@prosoco.com">pgrahovac@prosoco.com</a><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'>web site <a
href="http://www.prosoco.com/">http://www.prosoco.com/</a><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#000066'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#000066'><o:p> </o:p></span></p>
</div>
</body>
</html>