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<title>Modifying Geometry</title>
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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Omar,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The task at hand is definitely not as crazy-hard as it may seem.
[edit: Perhaps if I write a long enough response it will seem difficult? Haha…]<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The key is to have a general understanding of the “tiered”
relationship between surfaces/windows, spaces, zones and systems. Here’s
a walkthrough:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Conceptually, I’d first jump to the component tree under the
“building shell” tab, and modify the existing space (to be split) dimensions,
loads, and any surfaces (partitions, exterior walls, windows, etc.) to be one
of the smaller halves. Just go through every window for the space in the
component tree and modify everything as appropriate. Be sure to modify
the loads there as appropriate (occupancy and so on).<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
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</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>It’d be smart at this point to name that zone something recognizable
if it’s currently “wizard-crypto-babble,” for easier
identification.<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
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</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Then I’d jump to the Airside HVAC tab to find the
corresponding zone, which should remain associated with your modified space,
and fly through that zone’s window to make any adjustments
necessary. I’d also rename this for easy identification if you
haven’t already.<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
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</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Then do the same for the system the zone is tied to, if you are
going to need to “split” the system serving the zone (if it’s
going to be served by the same system you shouldn’t need to do much of
anything).<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>With all this set up, you will have a “hole” in your
building. Jump back to the Shell tab and copy the modified zone (right
click, create a new space, copy existing component, select your zone).
This will make everything identical. If you are literally splitting the
zone in two without any changes to the loads and such, you ‘re done here,
otherwise modify areas/child components (surfaces and such)/loads as necessary.<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Jump to the airside tab, right click under the appropriate
system, and create a new zone. Give it a clever name also. You’ll
be prompted to select an unassigned space after choosing to “copy an
existing component” (your easily-recognizable renamed and modified zone).
Choose the only unassigned space you probably have (the new one).<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Create a system in the same manner, again only if necessary, and
again modify if it isn’t to be an exact copy. If the new zone is
under the same system as the old large zone, just be sure it’s assigned to
the right system (it will be obvious from the component tree if it’s in
the wrong place).<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Before you start this sort of task for the first time, it may be
wise to first read up on and understand what it means to “link” a
component (instead of copying) – it may turn out to be a time/stress
saver for you depending on your current situation.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>As to zones/spaces lying “outside” the building, recognize
it may likely be a non-issue in terms of the modeled behavior. If there
are no exterior surfaces, it really doesn’t matter as long as everything
is associated correctly (i.e. west interior wall is tied to the correct space
or vice versa). If there are exterior surfaces, just be sure to think
about self-shading effects and reposition to where it should receive the intended
shading behavior with respect to the building itself and any exterior shades.
Elevation (z-coordinate) is something to verify also, as I suspect that factors
into some infiltration calcs (not personally sure of it, but this is simple to
verify). <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>If you still want to position a rogue-zone back into the
building (for aesthetic reasons or you otherwise feel it’s necessary for
accuracy), then you’ll need to determine exactly where it needs to move
in the model – hopefully you’ve kept a copy of the CAD file used to
trace the zones and such, and hopefully you’ve picked up the habit of
always using x=0,y=0 for origin when importing a CAD file to trace, or can
otherwise backtrack to figure out what you did use... resolving this task
is simply going to require some self-investigation into your files and records.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>~Nick<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Stylus BT","sans-serif";
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Omar
Katanani<br>
<b>Sent:</b> Wednesday, July 21, 2010 9:46 AM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] Modifying Geometry<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p style='margin-bottom:12.0pt'><span style='font-size:10.0pt'>Dear all,<br>
<br>
Once again, another problem!<br>
<br>
I have several spaces which were geometrically modified in the design. For
example, a room that was split into two different ones; with each room being a
different hvac zone. How can I possibly split a room into two zones "1"
and "2"? Shall I modify the geometry of the old zone to be that of
zone "1", and then add another zone "2" from scratch? If
this is what should be done, how can I do this accurately?<br>
<br>
Attached is the polygon view of one of my floors. When you look at them in 2-D
or 3-D views, the building seems perfect in shape. Notice the rectangle to the
left of the picture! This is actually a zone that lies inside the building. But
it appears like this in polygon view. I think it is some problem of coordinate
references or so!<br>
So when I need to modify the geometry according to coordinates of vertices, I'm
suffering!<br>
<br>
Many thanks!<br>
Omar<br>
<br>
___________________________<br>
<br>
Omar Katanani<br>
Sustainable Design Engineer<br>
Email: omar@ecoconsulting.net<br>
<br>
<br>
EcoConsulting (Lebanon)<br>
Nahas Building, 4th floor<br>
4 St-Maron Street / Georges Haddad Avenue<br>
Postal Code: 2028 5806 SAIFI<br>
Beirut, Lebanon<br>
Tel: +961 (0) 1 971 255<br>
Mobile: +961 (0) 3 045 045<br>
<br>
<br>
EcoConsulting (UK) Ltd<br>
28 Marshalsea Road<br>
London, SE1 1HF<br>
Tel: +44 (0)207 939 0989<br>
Fax: +44 (0)207 939 0981<br>
Website: www.ecoconsulting.net<br>
<br>
</span><o:p></o:p></p>
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