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    <p>Toni,</p>
    <p> You do not need to draw the cellar below the 0 level in
      SketchUp. You will need to specify in SketchUp/Trnsys3d that your
      cellar walls and floor are BOUNDARY walls and choose a variable
      name for the temperature on the outside of those surfaces.</p>
    <p>kind regards,</p>
    <p> David</p>
    <p><br>
    </p>
    <div class="moz-cite-prefix">On 02/26/2021 05:04, Toni Calabrese via
      TRNSYS-users wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:DB8PR09MB321061CC766EBDD693A666F0E99D9@DB8PR09MB3210.eurprd09.prod.outlook.com">
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        <p class="MsoNormal"><span style="font-size:10.0pt">Hi,<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="font-size:10.0pt" lang="EN-US">I
            have a question. I am modelling a MFH in SketchUp and I need
            to model the cellar. The cellar is (of course) below the
            ground, but I do not understand how Trnsys will recognize
            that the cellar is below the ground (i.e. not directly hit
            by the solar radiation). Here my questions:<o:p></o:p></span></p>
        <p class="MsoListParagraph"
          style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><!--[if !supportLists]--><span
            style="font-size:10.0pt" lang="EN-US"><span
              style="mso-list:Ignore">1)<span style="font:7.0pt
                "Times New Roman"">    
              </span></span></span><!--[endif]--><span
            style="font-size:10.0pt" lang="EN-US">Need I to draw the
            cellar below the "0" level in SketchUp? In SketchUp "-1m"
            means that I am drawing a flat 1 m below the ground?<o:p></o:p></span></p>
        <p class="MsoListParagraph"
          style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><!--[if !supportLists]--><span
            style="font-size:10.0pt" lang="EN-US"><span
              style="mso-list:Ignore">2)<span style="font:7.0pt
                "Times New Roman"">    
              </span></span></span><!--[endif]--><span
            style="font-size:10.0pt" lang="EN-US">Or need I simply to
            specify in TRNBUILD that the wall is a boundary wall (T
            ground) and automatically TRNSYS recognize that the wall is
            not hit by the solar radiation?<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="font-size:10.0pt" lang="EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span style="font-size:10.0pt" lang="EN-US">Thanks
            a lot and a nice afternoon.<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="font-size:10.0pt" lang="EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span style="font-size:10.0pt" lang="EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;color:#1F497D" lang="EN-US"><o:p> </o:p></span></p>
        <div class="MsoNormal" style="text-align:center" align="center"><span
style="font-size:10.0pt;color:#1F497D;mso-fareast-language:DE-CH">
            <hr width="100%" size="2" align="center">
          </span></div>
        <p class="MsoNormal" style="margin-top:4.0pt"><b><span
              style="font-size:10.0pt;color:#1F497D;mso-fareast-language:DE-CH">Toni
              Calabrese</span></b><span
            style="font-size:10.0pt;color:#1F497D;mso-fareast-language:DE-CH">,
            MSc.</span><span
            style="font-size:10.0pt;color:#1F497D;mso-fareast-language:DE-CH"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;color:#1F497D;mso-fareast-language:DE-CH">Wissenschaftlicher
            Projektleiter<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;color:#1F497D;mso-fareast-language:DE-CH"><a
              href="mailto:toni.calabrese@spf.ch" moz-do-not-send="true"><span
                style="color:#0065A3">toni.calabrese@spf.ch</span></a> |</span><span
style="font-size:10.0pt;color:#8C195F;mso-fareast-language:DE-CH">
          </span><span
            style="font-size:10.0pt;color:#1F497D;mso-fareast-language:DE-CH"><a
              href="mailto:toni.calabrese@ost.ch" moz-do-not-send="true"><span
                style="color:#0065A3">toni.calabrese@ost.ch</span></a></span><span
style="font-size:10.0pt;color:#8C195F;mso-fareast-language:DE-CH"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-family:"Calibri",sans-serif;color:#8C195F;mso-fareast-language:DE-CH"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;color:#1F497D;mso-fareast-language:DE-CH">T
            +41 58 257 4827<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;color:#1F497D;mso-fareast-language:DE-CH"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;color:#1F497D;mso-fareast-language:DE-CH">SPF
            Institut für Solartechnik<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;color:#1F497D;mso-fareast-language:DE-CH">OST
            – Ostschweizer Fachhochschule<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;color:#1F497D;mso-fareast-language:DE-CH">Oberseestr.
            10 | CH-8640 Rapperswil | Switzerland |
          </span><u><span
              style="color:#8C195F;mso-fareast-language:DE-CH"><a
                href="http://www.spf.ch/" moz-do-not-send="true"><span
                  style="font-size:10.0pt;color:#8C195F">www.spf.ch</span></a></span></u><span
style="font-size:10.0pt;color:#1F497D;mso-fareast-language:DE-CH"> |
          </span><u><span
              style="color:#8C195F;mso-fareast-language:DE-CH"><a
                href="http://www.ost.ch/" moz-do-not-send="true"><span
                  style="font-size:10.0pt;color:#8C195F">www.ost.ch</span></a></span></u><span
style="font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:DE-CH"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;color:#1F497D;mso-fareast-language:DE-CH"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span style="font-size:9.0pt;color:#1F497D">OST
            – Ostschweizer Fachhochschule ist der Zusammenschluss aus
            FHS St.Gallen, HSR Rapperswil und NTB Buchs.<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="mso-fareast-language:DE-CH"><o:p> </o:p></span></p>
        <p class="MsoNormal"><!--[if gte vml 1]><v:shapetype id="_x0000_t75" coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f">
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<v:imagedata src="mailbox:///C:/Users/dbrad/AppData/Roaming/Thunderbird/Profiles/8lnlpkj3.default/Mail/pop.fusemail.com/Inbox?number=55046165&header=quotebody&part=1.1.2&filename=image001.png" o:title="" />
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            style="width:.7833in;height:.725in"
            src="cid:part5.F2B24BC9.9179FBBA@tess-inc.com"
            v:shapes="Picture_x0020_1" class="" width="75" hspace="12"
            height="70" align="left"><!--[endif]--><b><span
              style="font-size:10.0pt;color:#8C195F;mso-fareast-language:DE-CH">Kursmodul
              Energiespeicher (4 Tage) an der OST – Rapperswil:<o:p></o:p></span></b></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;color:#004B7A;mso-fareast-language:DE-CH">Alles
            was Sie zu thermischen, elektrischen, chemischen und
            mechanischen Energiespeichern wissen müssen:<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;color:#004B7A;mso-fareast-language:DE-CH">Do.
            20.05. / Fr. 21.05. / Do. 27.05. / Fr. 28.05.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="font-size:10.0pt;color:#004B7A;mso-fareast-language:DE-CH">Jetzt
            <a
href="https://www.ost.ch/de/event/article/energiespeicher-theorie-und-anwendungen-4-kurstage/"
              moz-do-not-send="true">
              <span style="color:#004B7A">hier</span></a> anmelden</span><span
            style="font-size:10.0pt;mso-fareast-language:DE-CH"><o:p></o:p></span></p>
        <p class="MsoNormal"><span style="font-size:9.0pt;color:#1F497D"><o:p> </o:p></span></p>
        <p class="MsoNormal"><o:p> </o:p></p>
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      <pre class="moz-quote-pre" wrap="">_______________________________________________
TRNSYS-users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:TRNSYS-users@lists.onebuilding.org">TRNSYS-users@lists.onebuilding.org</a>
<a class="moz-txt-link-freetext" href="http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org</a>
</pre>
    </blockquote>
    <pre class="moz-signature" cols="72">-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI  53703 USA

P:+1.608.274.2577
<a class="moz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a>

<a class="moz-txt-link-freetext" href="http://www.tess-inc.com">http://www.tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.trnsys.com">http://www.trnsys.com</a></pre>
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