[Bldg-sim] Which LEED with which ASHRAE ?

[Ellen Franconi]

Here is our perspective on the subject. 
 
Before there was LEED for Homes, you could use LEED NC for multi-unit residential projects  - and according to the LEED Guidelines for Lodging one should use 90.2 for residential buildings that were 3 stories or less. But that was then and this is now. So we agree if it is only residential with 3 stories or less than one must use LEED for Homes.
 
We still use LEED NC for mixed-use buildings of 4 stories or more that include some floors of residential. In this case, we follow 90.1 but follow the 90.1 "residential" aspects of the standard to characterize those floors of the building. 
 
The gray area for us these days is if it is mixed use of 3 stories or less. 
 
Ellen
 
Ellen Franconi, Ph.D., LEED AP
Energy Analysis Group Manager
Architectural Energy Corporation
2540 Frontier Avenue
Boulder, CO 80301
tel. 303-444-4149
fax 303-444-4303
efranconi at archenergy.com 


>>> "Leadbetter, Keith" <kleadbetter at PathfinderEngineers.com> 1/25/2008 2:45 PM >>>
We are currently working on two dorm projects that fall into this gray
area of LEED. 

ASHRAE 90.2 is the appropriate standard for these types of buildings.
However, no reference to 90.2 is made in the LEED NC v2.2 manual. We
were told by a LEED NC course instructor that the buildings cannot be
certified under LEED NC v2.2. His reasoning is that since ASHRAE 90.1 is
not applicable, the buildings cannot meet EA prerequisite 2. 

Also, the LEED NC v2.2 manual states: 

"All commercial buildings, as defined by standard building codes, are
eligible for certification as a LEED for New Construction building.
Commercial occupancies include (but are not limited to) offices, retail
and service establishments, institutional buildings (libraries, schools,
museums, churches, etc.), hotels and residential buildings of four or
more habitable stories." 

Most standard building codes define 3 story dorms as residential
buildings.

The owners of our buildings have decided to register the projects in
order to get an official credit interpretation ruling from the USGBC. We
hope to have an official answer within the next few weeks.   

Regards,

Keith Leadbetter, PE, LEED(r) AP 
Pathfinder Engineers, LLP 
3300 Monroe Avenue, Suite 306
Rochester, NY 14618
TEL (585)218-0730 x110
FAX (585)218-0737 
kleadbetter at pathfinderengineers.com 

-----Original Message-----
From: bldg-sim-bounces at lists.onebuilding.org 
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Larry
Degelman
Sent: Friday, January 25, 2008 3:11 PM
To: 'Demba Ndiaye'; bldg-sim at lists.onebuilding.org 
Subject: Re: [Bldg-sim] Which LEED with which ASHRAE ?

Standard 90.1 defines "low-rise residential" as " .... multi-family
structures of three stories or fewer above grade...", so 90.1 will not
apply.  Standard 90.2 will be your choice.

Regards,
================================================
Larry O. Degelman, P.E.         ldegelman at suddenlink.net 
Professor Emeritus of Architecture     1-979-696-2506
Texas A&M University
================================================
-----Original Message-----
From: bldg-sim-bounces at lists.onebuilding.org 
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Demba
Ndiaye
Sent: Friday, January 25, 2008 1:27 PM
To: bldg-sim at lists.onebuilding.org 
Subject: [Bldg-sim] Which LEED with which ASHRAE ?

Hi Colleagues, 

I have here a group of 7 buildings in the same project. They are all
identical, except for orientation. 

The buildings are multifamily residential units, with 3 floors and a
basement each. They are existing buildings being renovated, and I am
wondering which version of LEED should apply (LEED for New Construction
and 
Major Renovations, LEED for Homes, ...)? 

Also, should I use ASHRAE 90.1 or ASHRAE 90.2 for the Baseline? 

Thanks.
______________
Demba Ndiaye
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Bldg-sim at lists.onebuilding.org 
http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org 

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