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FAQs about EQp1 :

We have a VAV system where single AHUs serve multiple zones. Do we need to take outside air measurements at each VAV box?

Our building has a single fan that supplies outside air to multiple AHUs. Do we need to perform outside air testing at the supply fan or at all AHUs?

What if our systems do not meet the required outside air when systems are tested at worst-case conditions?

What if after our Preliminary Review we have to revise the ventilation rate procedure calculations and find that we need to make corrections to the system in order to meet the prerequisite? Can we redo the outside air testing after making corrections? Wou

My building has 80 AHUs providing ventilation to building spaces. Do I have to do the ventilation calculations and conduct outdoor air measurements for each one?

Our system cannot provide enough outdoor air to meet ASHRAE 62.1-2010 due to design limitations. How much outdoor air must we provide to meet Case 2 instead?

The outdoor air intake for our ventilation system is not accessible, and it’s not possible to measure the outdoor airflow directly. How can we determine the outdoor airflow for this system?

How do I find whether my project is located in a non-attainment area for particulate matter or exceeds the prerequisite ozone requirements?

What happened to the IEQ Space Matrix that was available to version 2009 projects? What should I reference to determine how spaces in my building should be categorized for this prerequisite?

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EBOM-v4 EQp1:Minimum indoor air quality performance

Full Occupancy Calculations

Our project is a 24 level office building. At least 75% of occupancy has been reached.

According to LEED Compliance Guide, for EQ Prerequisite Minimum Indoor Air Quality Performance, for Mechanical Ventilated Spaces, it must be determined the minimum amount of outdoor air supplied at "full occupancy".

My query is:

When filling the Minimum Indoor Air Quality Calculator, full occupancy could be used as the "default value for zone population"?

Is it another way to calculate full occupancy? or is it according to the landlord building policies?

 

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Tue, 06/16/2020 - 19:15

Hi Giovani You can click the option of default value on the spreadsheet to complete the calculations. When you do that, the default value of the ASHRAE 62.1-2010 is included on the math. You can reach an estimated occupancy value by manually applying the default occupancy of the table 6-1 of the ASHRAE 62.1-2010 for your vacant spaces` square footages. Remember that was the way things were done until the LEED v2009 certification (https://www.usgbc.org/resources/leed-ebom-reduced-occupancy-guidance). I`ve already applied this method to achieve IEQp1 compliance for a commercial building that wasn`t fully occupied. Hope this helps.

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