[Bldg-sim] Baseline Modeling for LEED

[Vikram Sami]

I always assumed that if you went to 30% extra, you kept the baseline at
100%, and the designed building at 130%, but after reading this, it does
seem to make sense that you would increase both occurrences. 

 

Can anyone from the EA Tag chime in?

 

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

LORD, AECK & SARGENT ARCHITECTURE



 

From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Nathan
Miller
Sent: Thursday, November 19, 2009 4:42 PM
To: 'Rimes, Christie'; 'Steven Rutter'; bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] Baseline Modeling for LEED

 

I disagree, I believe the models should be same-same on ventilation
rates. See section 90.1 (2004) Section G3.1.2.5. It states:

 

"Minimum outdoor air ventilation rates should be the same for the
proposed and baseline building designs."

 

In my projects (including those that include 30% additional outside
air), I have always used the same outdoor air flow rates, unless I was
taking credit for demand control ventilation in the proposed case (see
the exception allowed in that same ASHRAE section). 

 

Nathan Miller

Senior Energy Engineer/Mechanical Engineer

direct: 206.788.4577

fax: 206.285.7111 

 

From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Rimes,
Christie
Sent: Thursday, November 19, 2009 1:32 PM
To: Steven Rutter; bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] Baseline Modeling for LEED

 

In  my experience you do not increase the baseline energy model as you
are being awarded (gaining that point) when you achieve the ventilation
credit. There are a few similar situations in LEED where by achieving
one credit will prevent you from achieving another but this happens to
everyone so it works out to be somewhat fair. 

 

 

 

From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Steven
Rutter
Sent: Thursday, November 19, 2009 1:25 PM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] Baseline Modeling for LEED

 

All,

There is a credit in LEED (EQc2.0) that involves increasing the required
ventilation rate by 30%.  In trying to achieve this credit, the amount
of energy would have to increase to condition that additional 30% OSA.
Does anyone know if you are supposed to increase the baseline energy
model's ventilation rate so it has the same ventilation rate as the
proposed building?  Thank you in advance for your help.

 

 

Steven Rutter, LEED(r) AP, EIT

 

 
3850 Happy Lane|Sacramento, CA 95827
O:916-368-0336|F:916-368-0337|C:916-717-7484

P Please consider the environment before printing this email. 

 

 

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