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Flush out for building without mechanical ventilation

NC-v4 EQc4: Indoor air quality assessment
posted by Ivan Acosta on Apr 30, 2020, 4:48 am

Hey, I am working on a office project which will have no mechanical ventilation, and where it was decided to persue the flush out path for "IEQc4 Indoor Air quality Assessment".

Now I am...

Last reply: hassan izhar, Jan 19, 2023, 6:26 am

EQc4- IAQ Assessment, Option 1. Flush-Out, Path 1. Before Occupancy

NC-v4 EQc4: Indoor air quality assessment
posted by Theresa Lehman on Aug 29, 2022, 2:41 pm

If the humidity exceeds the range (higher than 60%) for a couple of hours, can the team simply add those few hours onto the flush-out, or does the flush-out have to start completely over at the...

Last reply: Rebecca Rice, Aug 29, 2022, 5:44 pm

Gross Floor Area for Flushouts

NC-v4 EQc4: Indoor air quality assessment
posted by Cory Duggin on Aug 16, 2021, 4:08 pm

Should the penthouse be included in the gross area used to calculate the flush out volume?  Also, does it have to be specific on a system by system basis, such as the area of the floor served by...

Last reply: Dave Hubka, Aug 12, 2022, 2:27 pm

TO-15 vs TO-17 test method for VOCs

NC-v4 EQc4: Indoor air quality assessment
posted by Bryna Dunn on May 19, 2022, 11:38 am

In looking at the acceptable test methods for...

PM-10 Testing

NC-v4 EQc4: Indoor air quality assessment
posted by Robert Cashins on May 9, 2022, 5:02 pm

What method of testing have people used to measure airborne PM-10 dust required as part of V4 IEQ Credit 3.2?

Is real time monitoring acceptable?

What specific methods have been...

Single zone flush-out

NC-v4 EQc4: Indoor air quality assessment
posted by Omar Elrawy on Dec 25, 2019, 10:18 am

I have a main Fresh Aish Handling Unit (FAHU) that supplies fresh air to all FCUs. I need to know if I should calculate flush out on zone by zone basis, in which flushing the whole building will...

Last reply: Susan Di Giulio, Mar 23, 2022, 1:54 pm

Air Testing- UVGI

NC-v4 EQc4: Indoor air quality assessment
posted by Francesco Passerini on May 12, 2021, 8:50 am

Can equipment UVGI (Ultraviolet germicidal irradiation) be used during the test? 

Shall that be permantly installed? 

Or could that be mobile equipment and the owner signs a letter...

Last reply: Afogreen Build, Feb 9, 2022, 9:55 am

TVOC overall concentration doesn't pass but individual TVOC compounds do pass

NC-v4 EQc4: Indoor air quality assessment
posted by Valerie Johnston on Oct 14, 2021, 5:06 pm

All of the individual...

Last reply: Afogreen Build, Feb 9, 2022, 9:53 am

For v4.1 Option 2 Air Testing Path 1 (Particulate Matter and Organic Gases) direct calibrated instrument sampling duration

NC-v4 EQc4: Indoor air quality assessment
posted by james jozwiakowski on Dec 10, 2021, 3:54 pm

New to v4.1

1.What is the expected duration for each sample location when using direct read?   I cannot find any reference in either the ISO methods listed or in LEED 

2. Are...

Last reply: Russ Pellegrino, Dec 22, 2021, 8:57 am

IAQ test: laboratory accreditation

NC-v4 EQc4: Indoor air quality assessment
posted by Caroline MORA on Oct 1, 2021, 3:37 am

Dear all,

we are facing issues finding a laboratory with ISO/IEC 1702 accreditation to perform the indoor air quality tests.

Does someone know if some equivalences are accepted...

Last reply: David Hemming, Nov 18, 2021, 6:55 am