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<p>Souad,</p>
<p> I believe that there is a way of opening a 2d dwg as a
background image in SketchUp so that you can then trace over it
more quickly than if you were to start from nothing. Still, each
time that I have encountered this issue I have found that it takes
juat about the same amount of time if fight with and correct an
automatic import or if you start from nothing. <br>
</p>
<p> Here are a few tips that might help.</p>
<p>1. use as few thermal zones as possible on each floor. Often you
can group together rooms that face a certain direction (i.e. have
a particular sun exposure) into a single thermal zone.</p>
<p>2. model the plenum between floors as its own zone; this makes it
much easier to deal with the zone adjacencies from one floor to
the next.</p>
<p>3. rely heavily on the line drawing tool. Draw the perimeter of
each thermal zone's floor then draw vertical lines for the corners
then connect their tops. I have run into a lot of frustrations
with the extrude tool.</p>
<p>4. where possible avoid copying and pasting zones. It is nearly
as fast to draw another floor perimeter and walls. When I try
copying and pasting I sometimes have trouble with SketchUp
selecting things that aren't part of the zone that I am trying to
copy.</p>
<p>5. do all the walls floor by floor first and then add windows
after you have all the walls completed.</p>
<p>6. import the *.idf into TRNBuild and check adjacencies early and
often. I don't usually do more than 3 or 4 zones before I save the
*.idf, import it into TRNBuild, check it and then increase the
version number in the name of my *.idf file. When you run into
import errors I find it is often easier just to start over and
redraw a few zones than it is to figure out where the error is.</p>
<p>7. this one is rather specific but if you are drawing opaque
doors (i.e. walls contained within another wall) make a vertical
line between the middle of the door lintel and the ceiling. This
will break the containing wall into two walls and while that adds
another surface for Type56 to deal with I have found that it
avoids a lot of wall area calculation issues and errors in the
*.idf file.</p>
<p>best,</p>
<p> David</p>
<p> <br>
</p>
<p><br>
</p>
<p>On 11/20/2020 06:50, Lakjiri Souad via TRNSYS-users wrote:</p>
<blockquote type="cite"
cite="mid:CAOrmow6h5k90r8ddzpCzR6iGoPo8h2RL0d=00Q_gW7hJ0qCtyQ@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<span style="word-spacing:1px;color:rgb(49,49,49)">Dear Trnsys
users,</span>
<div style="font-size:1rem;word-spacing:1px;color:rgb(49,49,49)"
dir="auto">I want to simulate a complex building by TRnsys 18.I
have the plans of the building drawn in 2D by Autocad2020 .</div>
<div style="font-size:1rem;word-spacing:1px;color:rgb(49,49,49)"
dir="auto">What are the possible and easy ways to generate and
insert the 3 D building in TRnbuild18 using the 2 D autocad 2020
plans? knowing that The building is large and it would take a
lot of time if we use the sketchup18 to model it in 3D .</div>
-- <br>
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<div dir="ltr">Souad Lakjiri
<div>Electrical Project Engineer</div>
<div>Morocco's Ministry of Health</div>
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<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
F:+1.608.278.1475
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