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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">For an “old townhouse,” I think you may want to reference the ASHRAE fundamentals table for residential constructions (Fundamentals 2001, Ch28, Table 7)… they
surveyed a bunch of homes that were up to a few decades old to come up with a table that shows varying ACH rates, for “tight” to “loose” construction, varying with the OADT.
<u>The tightest value given is 0.41</u>. Again this isn’t a standard but rather based on real-world measurements.<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">A very good (and long) discussion thread is in the equest-users archives discussing alternate infiltration resources as well: thread title was “Basic stuff
– Infiltration”<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">~Nick<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"><img width="119" height="37" id="Picture_x0020_1" src="cid:image001.jpg@01CD2211.FBC2F9E0" alt="cid:489575314@22072009-0ABB"></span><b><span style="font-size:11.0pt;font-family:"Stylus BT","sans-serif";color:#2D4D5E"><o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Stylus BT","sans-serif";color:#2D4D5E"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-family:"Stylus BT","sans-serif";color:#2D4D5E">NICK CATON, P.E.</span></b><b><span style="font-family:"Stylus BT","sans-serif";color:#2D4D5E"><o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Calibri","sans-serif";color:#CC9900">SENIOR ENGINEER<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Calibri","sans-serif";color:#CC9900"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#2D4D5E">Smith & Boucher Engineers</span><span style="font-size:7.5pt;color:#CC9900"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#2D4D5E">25501 west valley parkway, suite 200<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#2D4D5E">olathe, ks 66061<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#2D4D5E">direct 913.344.0036<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#2D4D5E">fax 913.345.0617<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><a href="www.smithboucher.com" title="blocked::www.smithboucher.com"><span style="font-size:10.0pt">www.smithboucher.com</span></a></span><u><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:blue">
</span></u><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
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<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""> equest-users-bounces@lists.onebuilding.org [mailto:equest-users-bounces@lists.onebuilding.org]
<b>On Behalf Of </b>CleanTech Analytics<br>
<b>Sent:</b> Tuesday, April 24, 2012 2:32 AM<br>
<b>To:</b> xiaoyang shi<br>
<b>Cc:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] infiltration rate<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#336666">.35 ACH is the BPI standard, any tighter and mechanical ventilation is required..</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#336666"><br clear="all">
</span><o:p></o:p></p>
<p class="MsoNormal"><i><span style="font-family:"Verdana","sans-serif";color:#999999">Jeremiah D. Crossett</span></i><o:p></o:p></p>
<p class="MsoNormal"><i><span style="font-family:"Verdana","sans-serif";color:#999999">CleanTech Analytics</span></i><o:p></o:p></p>
<p class="MsoNormal"><i><span style="font-family:"Verdana","sans-serif";color:#999999">503-688-8951</span></i><o:p></o:p></p>
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<p class="MsoNormal"><a href="http://www.cleantechanalytics.com" target="_blank"><i><span style="font-family:"Verdana","sans-serif";color:#999999">www.cleantechanalytics.com</span></i></a><o:p></o:p></p>
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<p class="MsoNormal" align="center" style="text-align:center"><o:p> </o:p></p>
<p class="MsoNormal" align="center" style="text-align:center"><img border="0" id="_x0000_i1025" src="http://cleantechanalytics.com/images/stories/cleantech%20analytics%20120.PNG"><o:p></o:p></p>
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<p align="center" style="margin:0in;margin-bottom:.0001pt;text-align:center"><i><span style="font-size:8.5pt;font-family:"Droid Serif","serif";color:#CCCCCC;background:white">This document may contain valuable information proprietary to CleanTech Analytics
which is private and confidential. It may not be shared, copied, stored or transmitted in any form without the prior written consent of CleanTech Analytics</span></i><b><o:p></o:p></b></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><o:p> </o:p></p>
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<p class="MsoNormal">On Mon, Apr 23, 2012 at 11:54 PM, xiaoyang shi <<a href="mailto:xs2144@gmail.com" target="_blank">xs2144@gmail.com</a>> wrote:<o:p></o:p></p>
<p class="MsoNormal">Hi guys,<o:p></o:p></p>
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<p class="MsoNormal">Could I ask what is the about infiltration rate of old townhouse in NYC? Where could I find the standard?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">0.2cfm/ft2? Is it correct?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thanks<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Yang<o:p></o:p></p>
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