[Bldg-sim] SPAM-MED: LEED NC: Existing or New Building

[Sami, Vikram]

Rob,
Its not a unique situation – we run into this all the time. You should probably use LEED NC.

In the EAc1 template you can fill out percentages for new construction and for existing building (see below) and the calculation template prorates it.

[cid:image001.png at 01CC4085.09A94CE0]


Vikram Sami, LEED AP BD+C
Sustainable Design Analyst
1315 Peachtree St. NE, Atlanta, GA 30309
t: 404-443-7462    f: 404.892.5823       e: vikram.sami at perkinswill.com   www.perkinswill.com<http://www.perkinswill.com/>
Perkins+Will.  Ideas + buildings that honor the broader goals of society


From: bldg-sim-bounces at lists.onebuilding.org [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of MatthewRLarson at Eaton.com
Sent: Friday, July 08, 2011 12:08 PM
To: jtorres-coto at mbo1.com; rdh4176 at gmail.com
Cc: bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] SPAM-MED: LEED NC: Existing or New Building

We have always used a pro-rated point scale based on floor areas as Kyle describes for USGBC and it has never been disputed.

Thanks,

Matthew Larson, LEED AP BD+C
Project Engineer
Energy Solutions Group
E M C Engineers, Inc.
Eaton’s Electrical Services & Systems
143 Union Blvd, Suite 350
Lakewood, CO 80228
tel: +1 303 328-3419
mobile: +1 303 668-2511
fax: +1 303 974-1239
MatthewRLarson at Eaton.com<mailto:MatthewRLarson at Eaton.com>
www.eaton.com/energysolutions<http://www.eaton.com/energysolutions>
[cid:image002.jpg at 01CC4085.09A94CE0]

From: bldg-sim-bounces at lists.onebuilding.org [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Kyle Fridgen
Sent: Friday, July 08, 2011 9:32 AM
To: jtorres-coto at mbo1.com; 'Rob Hudson'
Cc: bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] SPAM-MED: LEED NC: Existing or New Building

The CaGBC allows using a pro-rated point scale based on the relative floor areas of new and existing.  Not sure if this is the same for USGBC.

Kyle

From: bldg-sim-bounces at lists.onebuilding.org [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Jorge Torres-Coto
Sent: Friday, July 08, 2011 11:00 AM
To: 'Rob Hudson'
Cc: bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] SPAM-MED: LEED NC: Existing or New Building

You use the existing building criteria for % and points in LEED if your existing portion is greater than  half of the whole project sq.ft. (existing + addition).

Jorge E. Torres Coto   [cid:image003.jpg at 01CC4085.09A94CE0]
4830 Viewridge Ave.
San Diego, CA 92123
p              858.751.0933
f              858.751.0937
c              858.688.6088
[cid:image004.gif at 01CC4085.09A94CE0]
________________________________
From: Rob Hudson [mailto:rdh4176 at gmail.com]
Sent: Friday, July 08, 2011 7:52 AM
To: jtorres-coto at mbo1.com
Cc: bldg-sim at lists.onebuilding.org
Subject: Re: SPAM-MED: [Bldg-sim] LEED NC: Existing or New Building

Yes, I agree that i should use the existing envelope for the existing conditions of the existing building and the ASHRAE Min for the new building.  But it comes down to whether EA Credit 1 follows the new building % or the existing building %.  it is a 2 point difference that could effect strategies for saving energy later in the design.

Rob

On Fri, Jul 8, 2011 at 10:44 AM, Jorge Torres-Coto <jtorres-coto at mbo1.com<mailto:jtorres-coto at mbo1.com>> wrote:
The baselines for the existing portion are what is there now.

The baselines for the new portion (addition) are ASHRAE definitions.

This should help considerably in your overall energy efficiency gains.

It all comes down to % new vs. % existing, on how much you can gain.

Jorge E. Torres Coto   [cid:image003.jpg at 01CC4085.09A94CE0]
4830 Viewridge Ave.
San Diego, CA 92123
p              858.751.0933<tel:858.751.0933>
f              858.751.0937<tel:858.751.0937>
c              858.688.6088<tel:858.688.6088>
[cid:image004.gif at 01CC4085.09A94CE0]
________________________________
From: bldg-sim-bounces at lists.onebuilding.org<mailto:bldg-sim-bounces at lists.onebuilding.org> [mailto:bldg-sim-bounces at lists.onebuilding.org<mailto:bldg-sim-bounces at lists.onebuilding.org>] On Behalf Of Rob Hudson
Sent: Friday, July 08, 2011 7:32 AM
To: bldg-sim at lists.onebuilding.org<mailto:bldg-sim at lists.onebuilding.org>
Subject: SPAM-MED: [Bldg-sim] LEED NC: Existing or New Building

I have a unique situation where the architect is taking an existing building and majorly renovating it (definition of major per LEED is HVAC, envelope and interior spaces) and then building an addition which is roughly the same size of the existing building, give or take a 1000 sqft.

Has anyone run into this before or have any insight that might help me explain which avenue to take to my boss?  I am currently thinking new building, but if it was existing then that helps me even more.

--
Rob Hudson



--
Rob Hudson

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