<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;"><div>Hello Ashraf,</div>
<div> <br><br></div>
<div>If you are reffering to a storage rooms,chemical <u>Minimum</u> exhaust rate is 1.5 cfm/ft2 as per ASHRAE 62.1-2007, Table 6-4.<br></div>
<div>Hope this helps.</div>
Cheers,Sasa<br><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;"><div id="yiv1440843871"><div class="yiv1440843871WordSection1"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span><div><div style="border-style: solid none none; border-color: rgb(181, 196, 223) -moz-use-text-color -moz-use-text-color; border-width: 1pt medium medium; padding: 3pt 0in 0in;"><p class="yiv1440843871MsoNormal" style="margin-left: 0.5in;"><b><span style="font-size: 10pt; font-family: "sans-serif";">From:</span></b><span style="font-size: 10pt; font-family: "sans-serif";"> Ashraf Khan [mailto:ashraf@mecsd.com] <br><b>Sent:</b> Wednesday, January 26, 2011 9:25 AM<br><b>To:</b> 'James V Dirkes II, PE'; bldg-sim@lists.onebuilding.org<br><b>Subject:</b> RE: [Bldg-sim] Warehouse ventilations to comply with ASHRAE 62.1</span></p></div></div><p
class="yiv1440843871MsoNormal" style="margin-left: 0.5in;"> </p><p class="yiv1440843871MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">James,</span></p><p class="yiv1440843871MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><p class="yiv1440843871MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">If we introduce 0.06 cfm.sqft, of outdoor air, if it complies with ASHRAE requirements, then we can do that. Normally all warehouses here will be having ventilators to exhaust air which is assumed that air intake by infiltration.</span></p><p class="yiv1440843871MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><p
class="yiv1440843871MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">Also project is located in DUBAI, UAE. Climate here is very hot and humid; if I introduce outdoor air it will affect the storage materials in the warehouse. </span></p><p class="yiv1440843871MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><p class="yiv1440843871MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">Did you know where can I find the exhaust rates, such as Toilets, Generator Room, pump room in ASHRAE?</span></p><p class="yiv1440843871MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><p class="yiv1440843871MsoNormal" style="margin-left: 0.5in;"><span
style="font-size: 11pt; font-family: "sans-serif"; color: navy;">Thanks & Regards,</span></p><p class="yiv1440843871MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">Ashraf</span></p><p class="yiv1440843871MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><div><div class="yiv1440843871MsoNormal" style="margin-left: 0.5in; text-align: center;" align="center"><hr width="100%" align="center" size="2"></div><p class="yiv1440843871MsoNormal" style="margin-left: 0.5in;"><b><span style="font-size: 10pt; font-family: "sans-serif";">From:</span></b><span style="font-size: 10pt; font-family: "sans-serif";"> James V Dirkes II, PE [mailto:jvd2pe@tds.net] <br><b>Sent:</b> Wednesday, January 26, 2011 5:26 PM<br><b>To:</b> 'Ashraf Khan';
bldg-sim@lists.onebuilding.org<br><b>Subject:</b> RE: [Bldg-sim] Warehouse ventilations to comply with ASHRAE 62.1</span></p></div><p class="yiv1440843871MsoNormal" style="margin-left: 0.5in;"> </p><p class="yiv1440843871MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">Ashraf,</span></p><p class="yiv1440843871MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><p class="yiv1440843871MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">It seems that all you need to do is demonstrate that your ventilation system complies with Table 6-1. Are you introducing at least .06 cfm/sq.ft of outdoor air with the mechanical ventilation system?</span></p><p class="yiv1440843871MsoNormal"
style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><p class="yiv1440843871MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">If so, just document it! If not, you’re in trouble and will need to provide a ventilation system.</span></p><p class="yiv1440843871MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><p class="yiv1440843871MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><p class="yiv1440843871MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><p class="yiv1440843871MsoNormal"
style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"><img id="yiv1440843871Picture_x005f_x0020_2" src="cid:1.2688228021@web39404.mail.mud.yahoo.com" width="558" height="483"></span></p><p class="yiv1440843871MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><div><p class="yiv1440843871MsoNormal" style="margin-left: 0.5in; text-align: center;" align="center"><b><span style="font-size: 13.5pt; color: rgb(31, 73, 125);">The Building Performance Team<br></span><span style="color: rgb(31, 73, 125);">James V. Dirkes II, P.E., LEED AP<br></span></b><span style="color: rgb(31, 73, 125);">1631 Acacia Drive NW</span><br><span style="color: rgb(31, 73, 125);">Grand Rapids, MI 49504</span><br><span style="color: rgb(31, 73, 125);">616 450 8653</span></p></div><p class="yiv1440843871MsoNormal"
style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><div><div style="border-style: solid none none; border-color: rgb(181, 196, 223) -moz-use-text-color -moz-use-text-color; border-width: 1pt medium medium; padding: 3pt 0in 0in;"><p class="yiv1440843871MsoNormal" style="margin-left: 1in;"><b><span style="font-size: 10pt; font-family: "sans-serif";">From:</span></b><span style="font-size: 10pt; font-family: "sans-serif";"> Ashraf Khan [mailto:ashraf@mecsd.com] <br><b>Sent:</b> Wednesday, January 26, 2011 8:15 AM<br><b>To:</b> 'James V Dirkes II, PE'; bldg-sim@lists.onebuilding.org<br><b>Subject:</b> RE: [Bldg-sim] Warehouse ventilations to comply with ASHRAE 62.1</span></p></div></div><p class="yiv1440843871MsoNormal" style="margin-left: 1in;"> </p><p class="yiv1440843871MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt;
font-family: "sans-serif"; color: navy;">Hello James,</span></p><p class="yiv1440843871MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><p class="yiv1440843871MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">I accept that ASHRAE 62.1 is concerned with people, the same we explained to LEED Reviewer team, this is the comment we received, </span></p><p class="yiv1440843871MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><p class="yiv1440843871MsoNormal" style="margin-left: 1in; text-align: justify;"><i><span style="font-family: "sans-serif";">However, since the project uses ventilator fans it is considered a mechanically ventilated space. Additionally, the LEED-NC v2.2 IEQp1 CIR ruling dated
10/8/2008 states that unless the mechanically ventilated warehouse has no human occupancy except for maintenance and repairs it must meet the requirements of ASHRAE Standard 62.1-2004. The narrative states that the warehouse will be occupied for the loading and unloading of goods; therefore, the warehouse is regularly occupied. </span></i></p><p class="yiv1440843871MsoNormal" style="margin-left: 1in; text-align: justify;"><i><span style="font-family: "sans-serif";">Provide calculations for the warehouse space demonstrating that the space complies with the minimum requirements of ASHRAE Standard 62.1-2004.</span></i></p><p class="yiv1440843871MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><p class="yiv1440843871MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">I am not having any idea how
to convince the team.</span></p><p class="yiv1440843871MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><p class="yiv1440843871MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">Thanks & Regards,</span></p><p class="yiv1440843871MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">Ashraf</span></p><div><div style="margin-left: 0.5in;"><div class="yiv1440843871MsoNormal" style="margin-left: 0.5in; text-align: center;" align="center"><hr width="100%" align="center" size="2"></div></div><p class="yiv1440843871MsoNormal" style="margin-left: 1in;"><b><span style="font-size: 10pt; font-family: "sans-serif";">From:</span></b><span style="font-size: 10pt; font-family: "sans-serif";"> James V Dirkes II, PE
[mailto:jvd2pe@tds.net] <br><b>Sent:</b> Wednesday, January 26, 2011 3:46 PM<br><b>To:</b> 'Ashraf Khan'; bldg-sim@lists.onebuilding.org<br><b>Subject:</b> RE: [Bldg-sim] Warehouse ventilations to comply with ASHRAE 62.1</span></p></div><p class="yiv1440843871MsoNormal" style="margin-left: 1in;"> </p><p class="yiv1440843871MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">Ashraf,</span></p><p class="yiv1440843871MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><p class="yiv1440843871MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">ASHRAE 62.1 is concerned with people, who need ventilation (supply / intake). For typical buildings, you may not need separate exhaust fans, because that
amount can probably exfiltrate through cracks. Supply and exhaust fans can be used in tandem if the building is fairly tight (no leaks).</span></p><p class="yiv1440843871MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><p class="yiv1440843871MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">Your MEP team’s 5-8 air changes per hour is for cooling, not ventilation. Any building with which has that much infiltration is closer to a tent than a building! (It’s not closed up.)</span></p><p class="yiv1440843871MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><div><p class="yiv1440843871MsoNormal" style="margin-left: 1in; text-align: center;" align="center"><b><span
style="font-size: 13.5pt; color: rgb(31, 73, 125);">The Building Performance Team<br></span><span style="color: rgb(31, 73, 125);">James V. Dirkes II, P.E., LEED AP<br></span></b><span style="color: rgb(31, 73, 125);">1631 Acacia Drive NW</span><br><span style="color: rgb(31, 73, 125);">Grand Rapids, MI 49504</span><br><span style="color: rgb(31, 73, 125);">616 450 8653</span></p></div><p class="yiv1440843871MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><div><div style="border-style: solid none none; border-color: rgb(181, 196, 223) -moz-use-text-color -moz-use-text-color; border-width: 1pt medium medium; padding: 3pt 0in 0in;"><p class="yiv1440843871MsoNormal" style="margin-left: 1.5in;"><b><span style="font-size: 10pt; font-family: "sans-serif";">From:</span></b><span style="font-size: 10pt; font-family: "sans-serif";">
bldg-sim-bounces@lists.onebuilding.org [mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Ashraf Khan<br><b>Sent:</b> Tuesday, January 25, 2011 11:55 PM<br><b>To:</b> bldg-sim@lists.onebuilding.org<br><b>Subject:</b> [Bldg-sim] Warehouse ventilations to comply with ASHRAE 62.1</span></p></div></div><p class="yiv1440843871MsoNormal" style="margin-left: 1.5in;"> </p><p class="yiv1440843871MsoNormal" style="margin-left: 1.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">We received a LEED review comment regarding Warehouse ventilation to comply with ASHRAE 62.1-2004.</span></p><p class="yiv1440843871MsoNormal" style="margin-left: 1.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><p class="yiv1440843871MsoNormal" style="margin-left: 1.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">Generally depending
on the warehouse storage, MEP team recommends 5-8 Air Changes per Hour by thumb rule for exhaust and air intake is assumed by infiltration by windows, open doors etc.. But this number I haven’t find in ASHRAE, please give me reference.</span></p><p class="yiv1440843871MsoNormal" style="margin-left: 1.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><p class="yiv1440843871MsoNormal" style="margin-left: 1.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">ASHRAE 62.1-2004, Table 6-1 for warehouse category says to have 0.06 cfm/ft<sup>2</sup>, is this number defines to intake or Exhaust? If it is exhaust, it is too small as volume of warehouse will be high.</span></p><p class="yiv1440843871MsoNormal" style="margin-left: 1.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><p class="yiv1440843871MsoNormal"
style="margin-left: 1.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">Please share your ideas to comply with the requirements.</span></p><p class="yiv1440843871MsoNormal" style="margin-left: 1.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><p class="yiv1440843871MsoNormal" style="margin-left: 1.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">Thanks & Regards,</span></p><p class="yiv1440843871MsoNormal" style="margin-left: 1.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">Ashraf</span></p></div></div><br>-----Inline Attachment Follows-----<br><br><div class="plainMail">_______________________________________________<br>Bldg-sim mailing list<br><a href="http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org"
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