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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'>You can create an exhaust air flow schedule and assign it to the applicable zone under the outside air/exhaust tab. The schedule would be 1 for occupied hours and .5 for unoccupied.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 align=left style='border-collapse:collapse'><tr style='height:13.95pt'><td width=830 valign=top style='width:8.65in;padding:0in 5.4pt 0in 5.4pt;height:13.95pt'><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 align=left width=816 style='width:8.5in;border-collapse:collapse'><tr style='height:13.0pt'><td width=816 valign=top style='width:8.5in;padding:0in 0in 0in 0in;height:13.0pt'><p class=MsoNormal style='mso-element:frame;mso-element-frame-hspace:2.25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-element-anchor-horizontal:column;mso-height-rule:exactly'><b><span style='font-family:"Arial","sans-serif";color:#1F497D'> </span></b><b><span style='font-size:12.0pt;font-family:"Arial","sans-serif";color:black'>Rick Goeres, PE, LEED AP</span></b><b><span style='font-size:12.0pt;font-family:"Arial","sans-serif";color:black'><o:p></o:p></span></b></p></td></tr></table></td></tr><tr style='height:47.75pt'><td width=830 valign=top style='width:8.65in;padding:0in 5.4pt 0in 5.4pt;height:47.75pt'><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 width=816 style='width:8.5in;border-collapse:collapse'><tr style='height:35.25pt'><td width=100 valign=top style='width:75.2pt;padding:0in 5.4pt 0in 5.4pt;height:35.25pt'><p class=MsoNormal style='mso-element:frame;mso-element-frame-hspace:2.25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-element-anchor-horizontal:column;mso-height-rule:exactly'><span style='color:#1F497D'><img width=69 height=67 id="Picture_x0020_1" src="cid:image001.jpg@01CE6B33.675DD5B0" alt=Logo></span><span style='font-size:12.0pt;color:#1F497D'><o:p></o:p></span></p></td><td width=716 valign=top style='width:536.8pt;padding:0in 5.4pt 0in 5.4pt;height:35.25pt'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-element:frame;mso-element-frame-hspace:2.25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-element-anchor-horizontal:column;mso-height-rule:exactly'><b><span style='font-size:9.0pt;font-family:"Garamond","serif";color:black'>MUSGROVE ENGINEERING, P.A.</span></b><b><span style='font-size:12.0pt;font-family:"Garamond","serif";color:black'><br></span></b><span style='font-size:7.5pt;font-family:"Times New Roman","serif";color:black'>Web: </span><span style='font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D'><a href="http://www.musgrovepa.com/" target="_blank" title="http://www.musgrovepa.com/"><span style='font-size:8.0pt;color:black'>www.musgrovepa.com</span></a></span><span style='font-size:7.5pt;font-family:"Times New Roman","serif";color:black'><br>234 S. Whisperwood Way, Boise, ID 83709 <br>Ph: 208.384.0585 x324 <img border=0 width=12 height=12 id="Picture_x0020_2" src="cid:image002.gif@01CE6B33.675DD5B0" alt="cid:2.3167032686@web110213.mail.gq1.yahoo.com"> Fx:208.384.0765<br><b>Over 35 Years of Engineering Excellence<o:p></o:p></b></span></p></td></tr></table></td></tr></table><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p></div><p class=MsoNormal><span style='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"'> equest-users-bounces@lists.onebuilding.org [mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Jeff Ross-Bain<br><b>Sent:</b> Monday, June 17, 2013 7:59 AM<br><b>To:</b> equest-users@lists.onebuilding.org<br><b>Subject:</b> [Equest-users] 90.1-2007; Section G3.1.1 exception d;Laboratory Exhaust<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='color:#1F497D'>Dear eQuest Experts –<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>I am working on a model for a laboratory building where the laboratory exhaust exceeds 5,000 cfm (combined, not for a single space). <o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>ASHRAE 90.1-2007, Section G3.1.1, exception d, states that <i>“for laboratory spaces with a minimum of 5,000 cfm exhaust, use system type 5 or 7 that reduce the exhaust and makeup air volume to 50% of design values, during unoccupied periods.” </i>This is a requirement for the Baseline case. <o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>I am using system type 5 but am not too sure how to model this requirement for flow rates. Does anyone have an insight to this or know of any specific instructions for meeting this requirement?<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>As always, thank you for being such a helpful and knowledgeable group.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Regards,<o:p></o:p></span></p><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:8.0pt;font-family:"Century Gothic","sans-serif";color:#006E78'>Jeff Ross-Bain, PE, </span></b><span style='font-size:8.0pt;font-family:"Century Gothic","sans-serif";color:#006E78'>LEED AP BD+C, BEMP</span><span style='font-size:7.5pt;font-family:"Century Gothic","sans-serif";color:#535053'><br>Principal<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:7.5pt;font-family:"Century Gothic","sans-serif";color:#535053'>404-220-8940 Office<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:7.5pt;font-family:"Century Gothic","sans-serif";color:#535053'>404-220-8955 Direct<o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt'><b><span style='font-size:7.5pt;font-family:"Century Gothic","sans-serif";color:#006E78'><a href="http://www.rbgb.com/"><span style='color:blue'>www.rbgb.com</span></a></span></b><span style='font-size:7.5pt;font-family:"Century Gothic","sans-serif";color:#535053'><br><br></span><span style='font-size:7.5pt;font-family:"Century Gothic","sans-serif";color:#006E78'>Build Green. Save Time<b><o:p></o:p></b></span></p></div></div></body></html>