[Bldg-sim] [EXTERNAL] SSc8 vs. EAc1 - LEEDv3 mistake in ext. lighting power calculation...???... (UNCLASSIFIED)

Cam Fitzgerald fitzgerald at sevengroup.com
Mon Oct 14 11:56:31 PDT 2013


Good afternoon, Nick,

Correct on both counts. I believe the thinking is that Addendum I aligns
more closely with the variable exterior lighting requirements based on the
project's location (e.g. urban, rural, etc) so it seemed appropriate to
adopt this addendum for SSc8 calculations for LEED projects. Since EAp2-c1
is not required to follow any specific addenda, it is permissible to use the
unmodified calculations to determine the allowance for the baseline case.

Have a great day!

Cam

-----Original Message-----
From: Nick Caton [mailto:ncaton at smithboucher.com] 
Sent: Monday, October 14, 2013 2:48 PM
To: Cam Fitzgerald; 'Eurek, John S NWO'; 'Norbert Repka';
bldg-sim at lists.onebuilding.org
Subject: RE: [Bldg-sim] [EXTERNAL] SSc8 vs. EAc1 - LEEDv3 mistake in ext.
lighting power calculation...???... (UNCLASSIFIED)

Hi Cam, thanks for the input!

I've re-read your response a few times and would like to be sure I fully
understand.  Would you please confirm (or otherwise correct) the following
statements?  

1. Where SSc8 documentation must follow addendum i to calculate the exterior
lighting power allowance, the baseline energy model for EAp2/EAc1 may
optionally document a differing exterior lighting power allowance per
90.1-2007 without addendum i.  

2. Proposed exterior lighting power should match between SSc8 documentation
and the EAp2/EAc1 Proposed energy model, for any case.

Thank you,

~Nick

NICK CATON, P.E.
SENIOR ENGINEER

Smith & Boucher Engineers
25501 west valley parkway, suite 200
olathe, ks 66061
direct 913.344.0036
fax 913.345.0617
www.smithboucher.com 

-----Original Message-----
From: Cam Fitzgerald [mailto:fitzgerald at sevengroup.com] 
Sent: Monday, October 14, 2013 4:59 AM
To: Nick Caton; 'Eurek, John S NWO'; 'Norbert Repka';
bldg-sim at lists.onebuilding.org
Subject: RE: [Bldg-sim] [EXTERNAL] SSc8 vs. EAc1 - LEEDv3 mistake in ext.
lighting power calculation...???... (UNCLASSIFIED)

Good morning, all,

Although Addendum I must be used for projects registered after the cited
date, the Baseline exterior lighting power allowance may still be calculated
bases on 90.1-2007 without addendum i. If using the revised baseline for
SSc8, only the reported proposed exterior lighting power must be reported
identically. The new Supplemental Section 1.4 Tables spreadsheet
automatically calculates the baseline exterior lighting allowance using this
methodology.

Have a great day!


Cam Fitzgerald

Energy Opportunities/a 7group company



-----Original Message-----
From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Nick Caton
Sent: Friday, October 11, 2013 9:47 PM
To: Eurek, John S NWO; Norbert Repka; bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] [EXTERNAL] SSc8 vs. EAc1 - LEEDv3 mistake in ext.
lighting power calculation...???... (UNCLASSIFIED)

I ran into this face first a few months back - see attached attempt at a
heads up for more information.

In short, the SSc8 templates are based around 90.1-2007 addendum i, note
LEED is a bit misleading and incorrectly calls it addendum 1.

If your project was registered prior to November of 2011 you might be able
to make a case to use the pre-addenda calculations.

I anticipate otherwise your SSc8 team needs to re-do their calculations, and
you'll need to update your model's proposed/baseline figures in kind.

Sorry for the probably-bad news =(,

~Nick


NICK CATON, P.E.
SENIOR ENGINEER

Smith & Boucher Engineers
25501 west valley parkway, suite 200
olathe, ks 66061
direct 913.344.0036
fax 913.345.0617
www.smithboucher.com 

-----Original Message-----
From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Eurek, John S
NWO
Sent: Friday, October 11, 2013 4:27 PM
To: Norbert Repka; bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] [EXTERNAL] SSc8 vs. EAc1 - LEEDv3 mistake in ext.
lighting power calculation...???... (UNCLASSIFIED)

Classification: UNCLASSIFIED
Caveats: NONE

>From our electrical engineer.

"-That's the exact issue I found.  I included a note on both SSc8 and the
lighting tab on EAp2 (?) indicating such.  In my opinion, ASHRAE 90.1-2007
should be followed in all cases, not Addendum 1 as listed in SSc8 (which is
really 90.1-2010) as it was not applicable to the design of the project."

We haven't submitted it yet, so I can't attest to the leed regimes'
willingness to except it.

John Eurek

-----Original Message-----
From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Norbert Repka
Sent: Friday, October 11, 2013 4:10 PM
To: bldg-sim at lists.onebuilding.org
Subject: [EXTERNAL] [Bldg-sim] SSc8 vs. EAc1 - LEEDv3 mistake in ext.
lighting power calculation...???...

Hi there,

 

I came across a strange thing on a LEEDv3 (v2009) project. One team was
working on SSc8 and the other on EAc1. While the exterior lighting power
density should be calculated in accordance with A90.1-2007, section 9, Table
1 in both cases, the SSc8 template (referring in the description field to
A90.1-2007) was automatically looking up A90.1-2010 values (allowable LPD)
while EAc1, table 1.4 was using A90.1-2007 values. I know that usually the
LEED reviewer flags (cross-checks SSc8 vs EAc1 ext. lighting calcs) this if
inconsistency is found. Has anyone experienced a mistake like this???...and
how did you resolve it???

 

Thanks,

Norbert

 

Norbert Repka PhD.,
CGD, LEED(r) BD+C

 

Sustainable

 

AEI | AFFILIATED ENGINEERS, INC.  
5802 Research Park Boulevard | Madison, WI  53719

P: 608.441.6644 | F: 608.238.2614  
nrepka at aeieng.com <mailto:nrepka at aeieng.com>   |  www.aeieng.com
<http://www.aeieng.com/>   

 

 


Classification: UNCLASSIFIED
Caveats: NONE


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