[BLDG-SIM] 90.1-2004 Appendix G Glazing for Baseline case

Paul Riemer PaulR at TWGI.com
Wed Jul 11 13:22:17 PDT 2007


Has anyone read the fine print referenced in these strings to reach this
conclusion:

If you are modeling under 90.1-2004 Appendix G for LEED and opt to not
normalize the glazing by orientation under addendum a, then you must
also except the other portions of addendum a, most notably the revised
area threshold of 25,000 sf for the base HVAC system in Table G3.1.1A.

It seems like a messy and perhaps unintentional convergence of standard
and policy adoption but it also seems like it is there in black and
white.  Any other conclusions?

Thanks,
Paul Riemer
The Weidt Group




-----Original Message-----
From: BLDG-SIM at gard.com [mailto:BLDG-SIM at gard.com] On Behalf Of Michael
Rosenberg
Sent: Wednesday, May 16, 2007 12:47 PM
To: BLDG-SIM at gard.com
Subject: [BLDG-SIM] 90.1-2004 Appendix G Glazing for Baseline case

The requirement to  distribute fenestration uniformly in horizontal
bands across the four orientations has been removed from Appendix G in
the published Addenda Supplement to 90.1, 2004. See the ASHRAE website
for the supplement.

http://www.ashrae.org/technology/page/132




Michael Rosenberg
Oregon Department of Energy
625 Marion St. N.E.
Salem, OR 97301-3742
Phone : (503) 373-7809
Fax: (503) 373-7806

>>> Chris Jones <cj at cr-jay.ca> 5/16/2007 9:56:02 AM >>>
Appendix G notes that for the Baseline building: "Vertical fenestration
areas for new buildings and additions shall equal that in the proposed
design or 40% of gross above grade wall area, whichever is smaller, and
shall be distributed uniformly in horizontal bands across the four
orientations."
Does this mean that the Baseline building gets windows on all walls on
each orientation whether or not the Design case has a window in all
walls on each orientation.  For example, if the west orientation has 30%
glazing overall but many spaces have no windows - some walls on the west
face have more that 30%.  Do those spaces in the Baseline case get 30%
glazing?  Or do I only put windows in the Baseline case where there are
windows in the Design case.

Thanks for any help!







Chris Jones, P.Eng.
14 Oneida Avenue
Toronto, ON M5J2E3
Tel. 416 203-7465
Fax. 416 946-1005

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------------------------------------------------------------------------
--------
From: BLDG-SIM at gard.com [mailto:BLDG-SIM at gard.com] On Behalf Of Leonard
Sciarra
Sent: Tuesday, May 15, 2007 8:52 AM
To: BLDG-SIM at gard.com
Cc: Scott Foster
Subject: [BLDG-SIM] ASHRAE Addendum now allowed for LEED (Major LEED
Decision impacting EAc1 Credit )


FYI,
these are current addenda
Standard 90.1-2004, Energy Standard for Buildings Except Low-Rise
Residential Buildings (I-P and SI versions)
The first Addenda Package includes a, b, c, d, e, f, g, h, i, j, k, l,
m, n, o, p, r, s, t, u, v, x, and ak
Addendum ad is listed separately in the second Addenda package.

Standard 90.1-2004: Addenda Supplement Package (PDF) 
Standard 90.1-2004: Addendum ad (PDF)  
link

http://www.ashrae.org/technology/page/132

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 Brandon
Nichols
Sent: Monday, May 14, 2007 6:11 PM
To: BLDG-SIM at gard.com
Subject: [BLDG-SIM] ASHRAE Addendum now allowed for LEED (Major LEED
Decision impacting EAc1 Credit )


Thanks Gail very much for the notification,

And thanks to whomever was responsible for convincing USGBC to amend the
process.  Seems like just a month ago I was railing on about this very
topic; now I'm out of excuses for not drafting up an ASHRAE 90.1
Appendix G amendment to address shortcomings in the baseline building
rotation exercise.


Regards,

Brandon Nichols, PE
Mechanical
HARGIS ENGINEERS
600 Stewart St
Suite 1000
Seattle, WA 98101
d | 206.436.0400 c | 206.228.8707
o | 206.448.3376 f | 206.448.4450
www.hargis.biz



------------------------------------------------------------------------
--------
From: BLDG-SIM at gard.com [mailto:BLDG-SIM at gard.com] On Behalf Of gail
Sent: Monday, May 14, 2007 3:02 PM
To: BLDG-SIM at gard.com
Subject: [BLDG-SIM] ASHRAE Addendum now allowed for LEED (Major LEED
Decision impacting EAc1 Credit )


Dear Fellow Energy modelers,

The following posting has been placed on the USGBC website (
http://www.usgbc.org/ShowFile.aspx?DocumentID=2664), which allows the
use of ASHRAE Addenda for all credits referencing ASHRAE standards.


Use of approved Addenda for ASHRAE Standards referenced in LEED

Background:
ASHRAE currently publishes Continuous Maintenance standards every three
years,
with a Supplement published eighteen months after the Standard is
published. In rare
cases, addenda are published in between the eighteen-month periods. LEED
development and ASHRAE standards development are not aligned and many
addenda
have been approved that would be useful for LEED project teams.

Action:
LEED project teams are required to use the ASHRAE Standard referenced in
the
applicable Reference Guide and are permitted to use addenda within the
most recent
Supplement to that Standard, as well as any approved addenda published
in between the
eighteen-month periods. Project teams are responsible for notifying LEED
reviewers of
the use of ASHRAE addenda utilized at the time of project documentation
submission.
If a project team elects to use an addendum to an ASHRAE Standard, this
addendum
must be applied to the entire LEED submittal.
This should make fenestration modeling much easier for the Baseline Case
for projects opting to follow the Addendum.




Best Regards,

Gail Stranske

CTG Energetics, Inc.





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