[BLDG-SIM] EA Cr 1 campuses

[Andrew Craig]

I know there have been CIRs related to this issue.  Search USGBC's
website with a few different keywords and you should be able to find the
pertinent interpretations.  Good luck.

 

Andrew Craig, EIT, LEED(r) AP | Mechanical Designer

INTERFACE ENGINEERING 
708 SW Third Avenue | Suite 400 | Portland, OR 97204 

direct: 503.382.2696
office: 503.382.2266
fax: 503.382.2262
email: Andrew_C at ieice.com
web: www.ieice.com 

Consultants of Choice to the Built Environment for over 35 years
Kirkland, WA | Portland, OR | Sacramento, CA | Salem, OR | SanFrancisco,
CA

________________________________

From: BLDG-SIM at gard.com [mailto:BLDG-SIM at gard.com] On Behalf Of kathryn
l
Sent: Thursday, August 02, 2007 9:31 AM
To: BLDG-SIM at gard.com
Subject: [BLDG-SIM] EA Cr 1 campuses

 

We are modeling a group of six buildings for a university which will be
served by the current campus CUP's steam and chilled water loops.
These buildings will all be submitted for  LEED certification as one
project.  Does anyone know if we can model the baseline from ASHRAE
90.1-2004 Appendix G for each building according to its individual
square footage, or if we have to choose the baseline system based off of
the total square footage for the entire group of buildings?  For our
project this would mean the difference between 90.1's System 5 (DX
cooling) and System 7 (chilled water).    

I found this little excerpt from the LEED Application Guide for multiple
buildings and campuses, but feel it doesn't really directly tackle the
question of choosing the baseline system but could potentially be
interpretted to mean that each building is considered separately during
the modeling process and therefor would have a baseline system based off
of its own square footage: 

 

EA Credit 1: Optimize Energy Performance 

Application Guidance 

Requirements 

This credit applies to each building within the project scope. To
receive a single rating for a group of buildings, use a weighted average
for the group of buildings based on their conditioned square footage, or
aggregate the data into one PRM calculation, so that performance is
achieved by buildings of varying sizes within a certifying group. Each
building must still meet EA Prerequisite 1 and may receive its own
rating if that is desired. 

 

 Any experience with this?  Any guidance would be greatly appreciated.  

Thanks!

Kathryn



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