[Equest-users] Glazing distributed uniformly in horizontal bands

[Robby Oylear]

LEED allows you to use any of the addenda to ASHRAE 90.1-2004.  However,
if you choose to use one of the addenda you must apply every aspect of
that particular addenda.  For example, if you choose to not distribute the
baseline building glazing equally around the building you must also apply
the changes made in addenda a effecting choice of BL system based on
project square footage, as well as the baseline supply air reset addendum.

 

Give addendum a a quick read through.  There aren't all that many changes
made and you can easily incorporate the whole addenda into your project.

 

Robby Oylear, LEEDR AP

Mechanical Engineer

direct: 206.788.4571

cell: 206.354.2721

www. <http://www.rushingco.com/> rushingco.com

 

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Steve
Mignogna
Sent: Thursday, October 23, 2008 12:51 PM
To: Bishop, Bill
Cc: equest-users at onebuilding.org
Subject: Re: [Equest-users] Glazing distributed uniformly in horizontal
bands

 

Bill-

I found this CIR, which should help to clarify whether or not you can use
the addenda.  It seems like you should be fine with using just that one
part of the addenda.




20/2007 - 

Credit Interpretation Request
The intent of this credit is to "Achieve increasing levels of energy
performance above the baseline in the prerequisite standard to reduce
environmental and economic impacts associated with excessive energy use."

The requirements of Option 1 of this credit are as follows:
- Demonstrate a percentage improvement in the proposed building
performance rating compared to the baseline building performance rating
per ASHRAE/IESNA Standard 90.1-2004 (without amendments) by a whole
building project simulation using the Building Performance Rating Method
in Appendix G of the Standard.


Table G3.1, number 5.c. in Appendix G of the Standard concerns vertical
fenestration. 

The baseline requirement is as follows:
- Vertical fenestration areas for new buildings and additions shall equal
that in the proposed design or 40% of the gross above-grade wall area,
whichever is smaller, and shall be distributed uniformly in horizontal
bands across the four orientations.

The exception that we would like to take is as follows:
- The intent of the baseline requirement is to encourage thoughtful
fenestration orientation and glazing percentage of a building that results
in energy savings. The Project is an exception to this approach.
- The facility exists for the purpose of sports viewing. The field-side
glazing exists in order for the facility to function as intended.
- The exterior walls of concessions, restrooms, and other ancillary spaces
typically do not have glazing. Concessions and restrooms are typically
semi-heated only. Modeling the baseline with glazing distributed over the
concessions and restrooms doesn't seem to meet the intent of the Standard.
- We would like to model the baseline building performance and the
proposed building performance with the same vertical fenestration-the
actual building fenestration. We ask that this exception is made for the
project. 


 

	

5/13/2007 - 

Ruling
The baseline and the proposed design can be modeled with the windows
distributed around the building as in the proposed design. The baseline
cannot have more than 40% window area as a percentage of total wall area.
As posted on the USGBC website, project teams can use addenda in the most
recent Supplement to the ASHRAE standards (see
http://www.usgbc.org/ShowFile.aspx?DocumentID=2664). Addendum A documents
this change.


------

Steve Mignogna




On Thu, Oct 23, 2008 at 11:44 AM, Bishop, Bill
<bbishop at pathfinderengineers.com> wrote:

Steve,

 

I believe you are referring to the Addenda a - G4.1c to ASHRAE 90.1-2004.
I have not reviewed all of the ASHRAE addenda, and the USGBC requires an
ASHRAE addendum to be applied to the entire LEED submittal (per this
document http://www.usgbc.org/ShowFile.aspx?DocumentID=2664), so I have
been sticking to 90.1-2004 without addenda. If anyone has an opinion on
whether or not to use the addenda for LEED, please share.

 

However, I also am doing modeling for New York State Executive Order 111,
which requires me to use the modeling requirements from the Energy
Conservation Construction Code of New York State (ECCCNYS). New York
apparently has not gotten the "uniform distribution not required" memo.

 

Is there a list of all the DOE-2 commands somewhere? It would be helpful
for deciphering my .pd2 file.

 

Thanks,

Bill

  _____  

From: Steve Mignogna [mailto:smignogna at gmail.com] 
Sent: Thursday, October 23, 2008 11:23 AM
To: Bishop, Bill
Cc: equest-users at onebuilding.org
Subject: Re: [Equest-users] Glazing distributed uniformly in horizontal
bands

 

Bill-

The uniformly distributed requirement has been changed.  You do not need
to do that anymore. As long as you have under 40% glazing you will not
need to change the area or locations of your glazing.  Hope that helps.

Regards,

-- 
Steve Mignogna
Atelier Ten



On Thu, Oct 23, 2008 at 11:04 AM, Bishop, Bill
<bbishop at pathfinderengineers.com> wrote:

All,

 

I want to modify the windows in an existing model so that they meet the
uniformly-distributed requirement. I'm trying to do this in the wizard,
and I know I will lose data from the detailed edit mode, which I will deal
with. However, I already used the "custom window/door placement" tab, and
this seems to override my desire to use the % window method. How do I
"undo" the custom windows/doors? Modify the .pd2 file?

 

Bill

 

William Bishop, EIT, LEEDR AP | Pathfinder Engineers LLP

Mechanical Engineer

 

3300 Monroe Ave., Suite 306 
Rochester, NY  14618

TEL (585) 218-0730 Ext. 114
FAX (585) 218-0737 

bbishop at pathfinderengineers.com

 

www.pathfinderengineers.com

P Please consider the environment before printing this email

 


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-- 
Steve Mignogna
Atelier Ten




-- 
Steve Mignogna
Atelier Ten

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