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

[Kyle Fridgen]

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:image001.jpg at 01CC3D62.A56EC090]
4830 Viewridge Ave.
San Diego, CA 92123
p              858.751.0933
f              858.751.0937
c              858.688.6088
[cid:image002.gif at 01CC3D62.A56EC090]
________________________________
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:image001.jpg at 01CC3D62.A56EC090]
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:image002.gif at 01CC3D62.A56EC090]
________________________________
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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