[Equest-users] Multi-Family Corridor Baseline

Fri Jun 10 07:04:49 PDT 2016

Thank you all for your inputs.

Sunayana

*From:* Maria Karpman [mailto:maria.karpman at karpmanconsulting.net]
*Sent:* Friday, June 10, 2016 9:13 AM
*To:* 'Julien Marrec' <julien.marrec at gmail.com>
*Cc:* 'Elizabeth Gillmor' <elizabeth at energetics-eng.com>; 'Sunayana Jain' <
sunayana at sustainablesolutionscorporation.com>;
equest-users at lists.onebuilding.org
*Subject:* RE: [Equest-users] Multi-Family Corridor Baseline

Good point Julien! Section 3.8 of the EPA document quoted below includes
several examples of common multifamily proposed design configurations with
the corresponding baseline systems.

Maria

-- 

*Maria Karpman *LEED AP, BEMP, CEM

________________

Karpman Consulting

www.karpmanconsulting.net

Phone 860.430.1909

41C New London Turnpike

Glastonbury, CT 06033

*From:* Julien Marrec [mailto:julien.marrec at gmail.com
<julien.marrec at gmail.com>]
*Sent:* Friday, June 10, 2016 2:18 AM
*To:* Maria Karpman
*Cc:* Elizabeth Gillmor; Sunayana Jain; equest-users at lists.onebuilding.org
*Subject:* Re: [Equest-users] Multi-Family Corridor Baseline

If these associated residential spaces are heated only, then they let you
use system 9/10 (unit heater, they were called 10 and 11 I believed when
first introduced by addenda *dn* of ASHRAE 2007). For stairwells that's
often the case.

--
Julien Marrec, EBCP, BPI MFBA
Energy&Sustainability Engineer
T: +33 6 95 14 42 13

LinkedIn (en) : www.linkedin.com/in/julienmarrec
LinkedIn (fr) : www.linkedin.com/in/julienmarrec/fr

2016-06-10 5:17 GMT+02:00 Maria Karpman via Equest-users <
equest-users at lists.onebuilding.org>:

The current version of EPA MFHR simulation guidelines is found at the link
below, and requires modeling corridors, stairwells, etc. in multifamily
buildings with baseline Systems 1/2 irrespective of their total area.

https://www.energystar.gov/ia/partners/bldrs_lenders_raters/downloads/mfhr/ENERGY%20STAR%20MFHR%20Simulation%20Guidelines_Version_1%200_Rev03.pdf?ca60-bf37
Here are some related abstracts.

*DEFINITIONS *

*common space**: *any spaces within a building that serves a function in
support of the residential part of the building that is not part of a *dwelling
unit*. This includes spaces used by residents, such as corridors, stairs,
lobbies, laundry rooms, exercise rooms, residential recreation rooms,
parking used exclusively by residents, building staff, and their guests.
This also includes offices used by building management, administration or
maintenance and all special use areas located in the building to serve and
support the residents such as day-care facilities, gyms, dining halls, etc.

*nonresidential**: *spaces in mixed-use buildings other than *residential *or
*common space*, such as commercial space.

*residential**: *spaces in buildings used primarily for living and
sleeping. Residential spaces include, but are not limited to, *dwelling
unit*s.

*3. MODELING GUIDELINES*

*…………………..*

*3.8.2 *The Baseline and Proposed HVAC system shall be modeled as per
Appendix G, and as clarified in the first note below Appendix G Table
G3.1.1A, “…Residential building types include dormitory, hotel, motel, and
multifamily.” Following this note, *common spaces *that are essential to
the building’s residential function, including but not limited to corridors
and stairwells, must be modeled with residential baseline HVAC system type
(System 1 or 2 only) depending on the predominant fuel source in the
building, except as allowed in 3.8.1.

Appendix G exception G3.1.1(a) that allows the use of additional system
types for non-predominant conditions if they total more than 20,000 ft2
only applies to heating source, not space function. Baseline HVAC System
Types 3-8 may not be used, except in appropriate *nonresidential *spaces
that exceed 20,000 ft2.

-- 

*Maria Karpman *LEED AP, BEMP, CEM

________________

Karpman Consulting

www.karpmanconsulting.net

Phone 860.430.1909

41C New London Turnpike

Glastonbury, CT 06033

*From:* Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] *On
Behalf Of *Elizabeth Gillmor via Equest-users
*Sent:* Thursday, June 09, 2016 9:25 PM
*To:* Sunayana Jain
*Cc:* equest-users at lists.onebuilding.org
*Subject:* Re: [Equest-users] Multi-Family Corridor Baseline

In my experience LEED will accept a second baseline system type for the
corridors, but then following appendix G, you would use a System type 7.  I
would take the same interpretation for MFHR.

You could probably make a case to do all residential systems, but with gas
heating in the corridor, that would put you in a System Type 1 throughout,
which would unnecessarily punish your dwelling units.

Cheers,

Elizabeth

*Elizabeth Gillmor  **PE, BEMP, LC, LEED AP*

*e n e r g e t i c s  **consulting engineers, llc*

energetics-eng.com | 303.619.0091

On Thu, Jun 9, 2016 at 1:41 PM, Sunayana Jain via Equest-users <
equest-users at lists.onebuilding.org> wrote:

I have 10 floors multi-family building. Units are served by packaged
terminal heat pumps and corridors are pressurized and are served by RTUs
(MAUs) with gas heat. Units are naturally ventilated. Total corridor area
is greater than 20,000 SF.

I wanted to know if residential systems (System 1 or System 2) should be
applied for the corridors in the baseline as recommended by Multi-Family
High Rise (MFHR) guideline? Would LEED also accept residential systems for
corridors instead of non-residential systems?

I have seen this discussion in the past but was curious to know the latest
take on it.

Thanks,

Sunayana

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