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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I am performing mechanical design and energy modeling for an
existing dormitory renovation in upstate NY. There is a concrete crawlspace
with ground contact that I think could be used to preheat/<span class=SpellE>precool</span>
makeup air. I have checked the Bldg-<span class=SpellE>sim</span> archives but
have not found any design guides or recommendations for using existing
crawlspaces/basements as earth tubes. We’d be cutting through concrete
structural walls to build something so I need to do some homework to justify
it. Any suggestions would be appreciated.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Regards,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Bill<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><b style='mso-bidi-font-weight:normal'><font size=2
color=black face="Franklin Gothic Medium"><span style='font-size:10.0pt;
font-family:"Franklin Gothic Medium";color:black;font-weight:bold;mso-bidi-font-weight:
normal;mso-no-proof:yes'>William Bishop, EIT, LEED<sup>®</sup> AP </span></font></b><b
style='mso-bidi-font-weight:normal'><font size=2 color="#006600"
face="Franklin Gothic Medium"><span style='font-size:10.0pt;font-family:"Franklin Gothic Medium";
color:#006600;font-weight:bold;mso-bidi-font-weight:normal;mso-no-proof:yes'>|</span></font></b><b
style='mso-bidi-font-weight:normal'><font size=2 color=black
face="Franklin Gothic Medium"><span style='font-size:10.0pt;font-family:"Franklin Gothic Medium";
color:black;font-weight:bold;mso-bidi-font-weight:normal;mso-no-proof:yes'> </span></font></b><b
style='mso-bidi-font-weight:normal'><font size=2 color=black
face="Franklin Gothic Medium"><span style='font-size:10.0pt;mso-bidi-font-size:
12.0pt;font-family:"Franklin Gothic Medium";color:black;font-weight:bold;
mso-bidi-font-weight:normal;mso-no-proof:yes'>Pathfinder Engineers &
Architects LLP</span></font></b><b><font size=2 color=black
face="Franklin Gothic Medium"><span style='font-size:10.0pt;font-family:"Franklin Gothic Medium";
color:black;font-weight:bold;mso-no-proof:yes'><o:p></o:p></span></font></b></p>
<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
9.0pt;font-family:Arial;color:black;mso-no-proof:yes'>Mechanical Engineer<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
5.0pt;font-family:Arial;color:black;mso-no-proof:yes'><o:p> </o:p></span></font></p>
<p class=MsoNormal><st1:address w:st="on"><st1:Street w:st="on"><font size=1
face=Arial><span style='font-size:9.0pt;font-family:Arial;mso-no-proof:yes'>134
South Fitzhugh Street</span></font></st1:Street><font size=1><span
style='font-size:9.0pt;mso-no-proof:yes'><br>
</span></font><st1:City w:st="on"><font size=1 face=Arial><span
style='font-size:9.0pt;font-family:Arial;mso-no-proof:yes'>Rochester</span></font></st1:City><font
size=1 face=Arial><span style='font-size:9.0pt;font-family:Arial;mso-no-proof:
yes'>, <st1:State w:st="on">NY</st1:State> <st1:PostalCode w:st="on">14608</st1:PostalCode></span></font></st1:address><font
size=1><span style='font-size:9.0pt;mso-no-proof:yes'><br>
</span></font><font size=1 face=Arial><span style='font-size:9.0pt;font-family:
Arial;mso-no-proof:yes'>T: (585) 325-6004 <font color=black><span
style='color:black'>Ext. 114</span></font></span></font><font size=1><span
style='font-size:9.0pt;mso-no-proof:yes'><br>
</span></font><font size=1 face=Arial><span style='font-size:9.0pt;font-family:
Arial;mso-no-proof:yes'>F: (585) 325-6005</span></font><font size=1
color=black face=Arial><span style='font-size:9.0pt;mso-bidi-font-size:12.0pt;
font-family:Arial;color:black;mso-no-proof:yes'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
9.0pt;font-family:Arial;color:black;mso-no-proof:yes'>wbishop@pathfinder-ea.com<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
9.0pt;mso-bidi-font-size:12.0pt;font-family:Arial;color:black;mso-no-proof:
yes'>www.pathfinder-ea.com</span></font><span style='mso-no-proof:yes'><o:p></o:p></span></p>
<p class=MsoNormal><font size=5 color=green face=Webdings><span
style='font-size:18.0pt;font-family:Webdings;mso-bidi-font-family:Webdings;
color:green;mso-no-proof:yes'>P</span></font><font color=green><span
style='color:green;mso-no-proof:yes'> </span></font><font size=1 color=green><span
style='font-size:7.5pt;color:green;mso-no-proof:yes'>Please strive to live
sustainably.</span></font><font color=green><span style='color:green'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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