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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Okay,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Thanks for all of the feedback –
great discussions. Here is a copy of a typical floor (the middle floor of
three). The ground floor has a small library and student center. I have also included
a screen shot of the zoning pattern for the west side which is for one half of the
building as well as a copy of the zoning for the east side first floor which
has the library and student center. The east side second and third floors are
similar to the west side. The building has several fume hoods.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><img width=511 height=369 id="_x0000_i1031"
src="cid:image001.jpg@01CC0AB8.1D498740"><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
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10.0pt;font-family:Arial;color:navy'><img width=460 height=343 id="_x0000_i1032"
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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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10.0pt;font-family:Arial;color:navy'><img width=460 height=329 id="_x0000_i1038"
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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Regards,<o:p></o:p></span></font></p>
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style='font-size:10.0pt;font-family:Arial;color:#006E78'><o:p> </o:p></span></font></p>
<p class=MsoNormal><b><font size=1 color="#006e78" face="Century Gothic"><span
style='font-size:7.5pt;font-family:"Century Gothic";color:#006E78;font-weight:
bold'>Jeffrey G Ross-Bain, PE, LEED AP, BEMP</span></font></b><font
color=navy><span style='color:navy'><o:p></o:p></span></font></p>
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style='font-size:7.5pt;font-family:"Century Gothic";color:#006E78;font-weight:
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Arpan Bakshi
[mailto:arpanbakshi@gmail.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, May 04, 2011 7:09
PM<br>
<b><span style='font-weight:bold'>To:</span></b> Jeremy Poling<br>
<b><span style='font-weight:bold'>Cc:</span></b> Paul Diglio; Jeff Ross-Bain;
equest-users@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Equest-users]
Thermal Blocks</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Jeff<o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Your query has generated a lot of discussion. Please attach the
following for your benefit--<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>1. Screenshot of your baseline equest zoning<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>2. Architectural floor plan<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>On Wed, May 4, 2011 at 6:26 PM, Jeremy Poling <<a
href="mailto:Jeremy.Poling@transwestern.net">Jeremy.Poling@transwestern.net</a>>
wrote:<o:p></o:p></span></font></p>
<div>
<div>
<div>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>Maybe this helps the definition debate
(apologies for the length, but some things require more words to
described). Section 2 in ASHRAE 90.1-2007 gives the following
definitions:</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Space: an enclosed space within a building. (It goes on to
define the different types of spaces, conditioned, semi-heated, etc., but those
don't seem to be of concern for this discussion).</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Zone: a space or group of spaces within a building with
heating and cooling requirements that are sufficiently similar so that desired
conditions (e.g. temperature) can be maintained throughout using a single
sensor (e.g., thermostat or temperature sensor).</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thermal Block: a collection of one or more HVAC zones
grouped together for simulation purposes. Spaces need not be contiguous
to be combined within a single thermal block.</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Appendix G goes on to set up rules as to how to determine a
thermal block in Table G3.1(7):</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Where HVAC zones are defined on HVAC design drawings, each
HVAC zone shall be modeled as a separate thermal block. Exception:
Different HVAC zones may be combined to create a single thermal block or
identical thermal blocks to which multipliers are applied, provided that all of
the following conditions are met:</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>a. The space use classification is the same throughout the
thermal block.</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>b. All HCAV zones in the thermal block that are adjacent to
glazed exterior walls face the same orientation or their orientations vary by
less than 45 degrees.</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>c. All of the zones are served by the same HVAC system or by
the same kind of HVAC system.</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>The Users Manual has additional explanation on how to put
together thermal blocks. For the purposes of the LEED reviewers comment,
don't forget that they are not assessing your use of the software you chose for
the model, they are assessing whether you complied with Appendix G
correctly. The specific comment issued is related to G3.1.1 of ASHRAE
90.1-2007 specifically. I couldn't tell from the screen capture if this
was the case, but based on the comment I would assume that the reviewer agrees
with you that your baseline system is one of the systems numbered 1-4.
They are expecting to see a separate system modeled per thermal block.</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>To address eQuest definitions, the DOE-2.2 Volume 2:
Definitions classifies the "SPACE" keyword as an Envelope Component
and more specifically, something the LOADS portion of the software uses to
determine the loads to impose on a system. the "ZONE" keyword
is defined as an HVAC Component used by the HVAC portion of the software to
determine the system and plant operating responses to loads in the
building. Very specifically, the ZONE keyword definition states:</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>"Each zone is associated with one and only one SYSTEM
command, which specifies the system to which the zone belongs. This applies to
conditioned zones as well as unconditioned zones and plenum zones. Note that
there must be a one-to-one match-up between the zones specified here and the
spaces specified in the LOADS program. That is, for each SPACE command in LOADS
there will be a corresponding ZONE command to represent a physically identical
portion of the building."</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>So you can see from the definitions in eQuest and in ASHRAE
90.1-2007 that the software is really not concerned with how many spaces are in
a zone. It relies on the modeler and HVAC designer to ensure that they
have appropriately zoned the building.</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>In addition, I wouldn't interpret the reviewers comment as
questioning your zoning at all: they specifically are asking that the model
include 1 system per thermal block. Unless you are using the exception
(and it is an exception) that allows multiple zones to be combined into the
same thermal block, this means that you will have one eQuest zone per
system. </span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>For my personal interpretation: all of the wording in ASHRAE
90.1-2007 in G3.1.1 and Table G3.1 really points to systems 1-4 being
single-zone systems and systems 5-8 being multi-zone systems. If you have
a building that is non-residential, 3 floors or less, and less than 25,000 SF
in real life, it would seem more probable that this building has single-zone
systems and that larger buildings have multi-zone systems. The
system-per-floor requirement seems to match my experience as to how most
mid-rise and high-rise office buildings are designed: one air handling unit per
floor serving a primary duct system that terminal units in the tenant space connect
to.</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
</div>
<div>
<div>
<div>
<div>
<div>
<p class=MsoNormal><b><font size=1 color=black face=Arial><span
style='font-size:7.5pt;font-family:Arial;color:black;font-weight:bold'>Jeremy
R. Poling, PE, LEED AP+BDC</span></font></b><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'><o:p></o:p></span></font></p>
</div>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center>
</span></font></div>
</div>
<div>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> <a
href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a>
on behalf of Paul Diglio<o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>Sent:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Wed 5/4/2011
4:46 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Jeff Ross-Bain; <a
href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a><o:p></o:p></span></font></p>
<div>
<div>
<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'><br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Equest-users]
Thermal Blocks<o:p></o:p></span></font></p>
</div>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
</div>
</div>
<div>
<div>
<div>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=2
face="Times New Roman"><span style='font-size:10.0pt'>Jeff:<br>
<br>
I've seen some of the other e-mails from the forum and I do not agree with the
terminology other people are using, i.e. space v. zone v. thermal block.
Some of these replies are exceedingly long and contradictory.<br>
<br>
Let's leave 'thermal block' out of the discussion. Take one floor
of an office building. The baseline would usually require one HVAC unit
for this floor per 90.1. I would create zones in the wizard for each
large office space, the restroom, the utility rooms, the corridor and elevator
lobby. I would use the same procedure that you used below to add these
zones to the HVAC system. Having the separate zones allows you to adjust
the airflow and temperatures to the individual zones and also to find out where
unmet hours might be occurring.<br>
<br>
As an example of my understanding of a thermal block, say the office building
has 8 floors and each elevator lobby is supplied by the same common HVAC
system. I would zone each lobby as described above and add them to the
elevator lobby HVAC system. This is a thermal block because it is a
collection of spaces that share the same system and space characteristics.<br>
<br>
Paul Diglio<o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=2 face="Times New Roman"><span style='font-size:
10.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face="Times New Roman"><span style='font-size:
10.0pt'><o:p> </o:p></span></font></p>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
<hr size=1 width="100%" align=center>
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<p class=MsoNormal style='margin-bottom:12.0pt'><b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Jeff
Ross-Bain <<a href="mailto:jeff@rbgb.com" target="_blank">jeff@rbgb.com</a>><br>
<b><span style='font-weight:bold'>To:</span></b> Paul Diglio <<a
href="mailto:paul.diglio@sbcglobal.net" target="_blank">paul.diglio@sbcglobal.net</a>><br>
<b><span style='font-weight:bold'>Sent:</span></b> Wed, May 4, 2011 9:39:19 AM<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [Equest-users]
Thermal Blocks</span></font><o:p></o:p></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>Hi Paul,</span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>So you establish individual zones in the building footprint window
(2) and discriminate between corridors, classrooms… but what about all
the little closets, odd offices here and there, rest rooms, mechanical rooms,
meeting rooms, etc.? It seems that the zoning patterns would then become a
nightmare. In your Zone Group Definitions window (14) you would then assign the
same system to each of those zones? Here is a screen shot of a zoning pattern.
I have used this approach for years:</span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3 face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'><img border=0 width=388 height=285 id="_x0000_i1027"
src="cid:image004.jpg@01CC0AB8.1D498740"></span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
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<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;font-weight:
bold'>From:</span></font></b><font size=2 face=Tahoma><span style='font-size:
10.0pt;font-family:Tahoma'> Paul Diglio [mailto:<a
href="mailto:paul.diglio@sbcglobal.net" target="_blank">paul.diglio@sbcglobal.net</a>]
<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, May 04, 2011 9:21
AM<br>
<b><span style='font-weight:bold'>To:</span></b> Jeff Ross-Bain; equest-users<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Equest-users]
Thermal Blocks</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
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<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Jeff:<br>
<br>
ASHRAE 90.1 allow spaces of similar thermal characteristics to be combined in
thermal blocks. I do not include what you call support spaces because the
load and occupancy is much different than, say a classroom. I would
define the corridor as a separate zone within the thermal block but served by the
same HVAC system. This allows you to have a different set-point, airflow,
occupancy and schedules for the corridor.<br>
<br>
You do not have to define a separate shell for each block, you can define the
block by custom zones in the wizard.<br>
<br>
I divide up a thermal block into as many reasonable zones as possible.
This allows me to find out which area of the thermal block is causing any unmet
heating or cooling hours. It also allows me to change the HVAC system
control zone to that zone which is the hardest to satisfy in the summer and
winter. These zones can be served by a single HVAC system.<br>
<br>
For a proposed model that needs to conform to an actual design, defining
multiple zones per thermal block allows you to balance the airflow to zones
that have unmet hours without increasing the overall airflow of the HVAC
system. I define the zonal airflow in the Zone tab. I reduce the
airflow to the zones without any unmet hours and increase the airflow to those
zones that have unmet hours. I do not define the total fan CFM in the
Airside Systems tab.<br>
<br>
What were the comments from the LEED reviewer?<br>
<br>
Paul Diglio</span></font><o:p></o:p></p>
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<hr size=1 width="100%" align=center>
</span></font></div>
<p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;font-weight:
bold'>From:</span></font></b><font size=2 face=Tahoma><span style='font-size:
10.0pt;font-family:Tahoma'> Jeff Ross-Bain <<a href="mailto:jeff@rbgb.com"
target="_blank">jeff@rbgb.com</a>><br>
<b><span style='font-weight:bold'>To:</span></b> equest-users <<a
href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a>><br>
<b><span style='font-weight:bold'>Sent:</span></b> Wed, May 4, 2011 9:05:15 AM<br>
<b><span style='font-weight:bold'>Subject:</span></b> [Equest-users] Thermal
Blocks</span></font><o:p></o:p></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>Hi All,</span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3 face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>Are there any additional discussions out there regarding thermal
blocks besides what is in ASHRAE Standard 90.1 and the User’s Guide? I
have received comments back from a LEED reviewer that seems to reflect an
interpretation of that concept which I have not seen before.</span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3 face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>In a nutshell, does each thermal block require a separate shell
with individual HVAC system? I understand the concept of having individual
thermal blocks or combining these if they are similar space use categories. I
am assuming then that the similar space use categories (say a college classroom
building) can also include support spaces such as corridors, storage spaces,
faculty offices, etc. </span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3 face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>So if several thermal blocks are combined into one, can they not be
served by a single, similar type of HVAC system?</span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3 face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>I hope that I have made myself clear and many thanks for your
thoughts and comments.</span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3 face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p>
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size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>Regards,</span></font><o:p></o:p></p>
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-- <o:p></o:p></span></font></p>
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<p><b><font size=3 face="Times New Roman"><span style='font-size:12.0pt;
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face=Arial><span style='font-family:Arial'>LEED AP BD+C</span></font><b><span
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