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NC-v4 EQp1:Minimum indoor air quality performance

Entering nonregularily occupied spaces in IEQp1 spread sheet cal

Greetings, In the IEQp1 calculation form, provided by USGBC for using in LEED v4, in the Occupancy Category pull-down menu, there is nothing related to equipment rooms, non-occupied stores and similar spaces which belong to Non-regularly occupied spaces. The only one listed is Corridor. In the previous LEED version, in this spreadsheet there was an option "Other (specify)" where any non listed space could be entered. In this form such option do not exists. I've been asking via LEED Online - "Feedback" two days ago, but there's no answer and my question is: How to enter such spaces in the IEQp1 spreadsheet calculator? Thanks.

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Melissa Kelly
Sustainability Specialist
Gensler
LEEDuser Basic Member
66 thumbs up

Fri, 04/17/2015 - 16:37

Hi Vassil, You're right, these spaces are still in the standard but not in the calculator. Weird! Please come back and let us know when you get a response from GBCI--I'm curious to know if they were intentionally left out. In the meantime, I think you have two options: 1. Include these spaces in the calculator as Corridors, since the required ventilation rates are the same, and provide a narrative explaining the additional space types that have been included this way. 2. Enter just the potentially critically zones into the calculator. Then you won't have to enter these ones, as they're not likely to be critical since they're non-occupied. To do this, you should select "No" under the "All zones are included in the VRP calculation" box at the top of the sheet for the system, and follow the instructions in the ASHRAE 62.1 User Manual for identifying critical zones.

Sat, 04/18/2015 - 07:53

That was the reply from GBCI: "Dear Vassil, Thank you for your inquiry regarding IEQp - Minimum Indoor Air Quality Performance. I apologize for the delay in responding to your inquiry; we are currently experiencing a high volume of technical questions and appreciate your patience. All occupiable spaces, regularly or non-regularly occupied, must be provided with ventilation in accordance with ASHRAE 62.1. The definition of 'occupiable' is as follows: "an enclosed space intended for human activities, excluding those spaces that are intended primarily for other purposes, such as storage rooms and equipment rooms, and that are only occupied occasionally and for short periods of time." Please note that if an exact occupancy is not listed, the most similar occupancy in terms of occupants and air contamination from materials, equipment, etc. should be selected. Please also note that Data Centers should be classified as active storage or office for purposes of IEQp Minimum Indoor Air Quality Performance (ASHRAE 62.1-2010). I hope that helps, but if you have any further questions or concerns about this inquiry, please feel free to respond directly to this email. For any new inquiries, please contact us at http://www.gbci.org/org-nav/contact/Contact-Us/Project-Certification-Questions.aspx. Best Regards, Corey Flavin LEED Specialist, LEED AP O+M, PMP Green Building Certification Institute 2101 L Street NW, Suite 500 Washington, DC 20037

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