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    <p>Tarek,</p>
    <p> For some reason none of the zones that you drew in
      SketchUp/Trnsys3d were written to the *.idf file. If you did not
      already do so, please try and step through the relevant section of
      the 09-Tutorials manual as it explains the process. If you have
      done that and are still having problems I would recommend
      contacting your distributor for assistance.</p>
    <p>kind regards,</p>
    <p> David</p>
    <p><br>
    </p>
    <div class="moz-cite-prefix">On 09/13/2022 09:44, Tarek El Shafey
      via TRNSYS-users wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAGLY9tC+ne2KPoV-zdZJsf+C+84swHEzM3gh0WNyc_AyL_wekQ@mail.gmail.com">
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      <div dir="rtl">I built a building using sketchup 2019 and tried to
        import it to Studio simulation, but an error occurred. It says "
        At least 2 surfaces are required per zone ". I am attaching the
        modelling file in idf extension. Please tell me where the
        problem is.<br>
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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 System 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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