[BLDG-SIM] ASHRAE 90.1-2004 Appendix G for Existing Buildings

[Leonard Sciarra]

Jeff, 
I would agree, if you are using appendix G your baseline would have to
match the mandatory and prescriptive envelope requirements.  That said,
if there was an exception buried somewhere in the text (Either section 4
or 5) that would allow the existing envelope to remain as is, then that
would be your baseline to compare.
 
What you should do is read thru and see what the envelope requirements
would be if you were just going in for a regular minimally comply with
the standard building permit and use that as your baseline, then worry
about G and any particulars therin.  
 

Leonard Sciarra, AIA, LEED ap

312.577.6580 (Dir)

G E N S L E R | Architecture & Design Worldwide

30 West Monroe Street

Chicago IL, 60603

312.456.0123

leonard_sciarra at gensler.com 

 

________________________________

From: BLDG-SIM at gard.com [mailto:BLDG-SIM at gard.com] On Behalf Of Vikram
Sami
Sent: Monday, June 18, 2007 12:36 PM
To: BLDG-SIM at gard.com
Subject: [BLDG-SIM] ASHRAE 90.1-2004 Appendix G for Existing Buildings


Jeff,
That's a tricky one. I am assuming that as a warehouse, the building
would fall into the semi heated category. In which case switching the
functions might mean that your base building should comply with the
fully heated standard. 
 
Don't know if that's actually the case though.
 

Vikram Sami, LEED AP 
Direct Phone 404-253-1466 | Direct Fax 404-253-1366 

LORD, AECK & SARGENT ARCHITECTURE
1201 Peachtree Street NE, Suite 300, Atlanta, GA 30361 
Responsive Design * Technological Expertise * Exceptional Service 
www.lordaecksargent.com 

 

________________________________

From: BLDG-SIM at gard.com [mailto:BLDG-SIM at gard.com] On Behalf Of
Ross-Bain, Jeff
Sent: Monday, June 18, 2007 11:39 AM
To: BLDG-SIM at gard.com
Subject: [BLDG-SIM] ASHRAE 90.1-2004 Appendix G for Existing Buildings



Hello All,

 

Can someone please help with this interpretation?

 

Table G3.1, Section 5, Building Envelope, Item (f) under Baseline
Building indicates that baseline envelope conditions shall reflect the
existing conditions prior to revision. The project I am modeling is an
existing building that had single pane glass and CMU walls with no
insulation. The internal use of the existing building was quite
different from the new (we are going from a warehouse to an office). I
assume, then, that the Baseline Building will reflect the existing
envelope conditions but with the new conditions (i.e. lighting, space
usage, schedules, occupancy, etc.) and the Proposed Building will
reflect the improved building envelope (with, of course, the other
energy efficiency measures designed into the renovated building).

 

Is this a valid assumption?

 

Many thanks,

Jeffrey G. Ross-Bain, PE, LEED 
Smith Dalia Architects 
621 North Ave NE 
Suite C-140 
Atlanta, GA, 30308 
404-892-2443 
www.smithdalia.com <http://www.smithdalia.com>  

P Consider the environment. Please don't print this e-mail unless you
really need to.

 

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