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Filtering mixed return and outdoor air

NC-v4 EQc1: Enhanced indoor air quality strategies
posted by Zeynep Cakir on Jun 6, 2024, 9:52 am

Is it acceptable to filter mixed return and outdoor air instead of outdoor air only? In our case, huge industrial ventilation systems provide fresh air to a yarn factory. The ventilation systems...

Last reply: Andrey Kuznetsov, Jun 7, 2024, 5:52 am

Storage of Chemicals to avoid Cross-contamination in Labs

NC-v4 EQc1: Enhanced indoor air quality strategies
posted by Joyce Kelly on Feb 27, 2018, 7:37 pm

I'm recommending that chemicals delivered to Labs should be stored in vented Chem. cabinets with 0.5cfm psf to create neg. pressure with respect to the rest of the Lab. Then, chemicals in use are...

Last reply: Grace Heraly, Jun 6, 2024, 1:51 pm

Entryway Systems

NC-v4 EQc1: Enhanced indoor air quality strategies
posted by Lara Ibarra on Sep 15, 2020, 3:41 pm

Hi everyone,

For the entryway systems, the guide doesn't specify if it has to be installed inside and/or outside the building's entrance. Does anyone know if it can be installed 5 feet...

Last reply: Andrey Kuznetsov, May 30, 2024, 3:37 am

Restaurant and Kitchen

NC-v4 EQc1: Enhanced indoor air quality strategies
posted by Omar Elrawy on Dec 1, 2018, 9:24 am

I need to know if I have to apply interior cross-contamination prevention on a kitchen and a restaurant at my NC office building or not?

Last reply: Afogreen Build, Apr 21, 2024, 9:04 pm

Does a "Hot Zone" in a Fire Station need individual door closers?

NC-v4 EQc1: Enhanced indoor air quality strategies
posted by Adrienne Franz on Apr 18, 2024, 10:09 am

Our Project is a Fire Station that has an area defined as a "hot zone" which includes the apparatus...

Calculating CO2 setpoint for carbon dioxide monitoring

NC-v4 EQc1: Enhanced indoor air quality strategies
posted by Edgar Arevalo on Nov 9, 2023, 11:19 am

I've been looking at Appendix C of ASHRAE 62.1-2010 for a way, and I keep scratching my head.  Does anyone how to calculate for the...

Last reply: Afogreen Build, Mar 26, 2024, 10:01 pm

Walk off mats for skyway entrance

NC-v4 EQc1: Enhanced indoor air quality strategies
posted by SIG - Sustainability Main Account on Mar 22, 2024, 2:34 pm

Would a skyway, those elevated walkways between buildings popular in Minneapolis, be considered a "...

Last reply: Talia Mamayek, Mar 22, 2024, 4:16 pm

Option 2- Carbon dioxide monitoring

NC-v4 EQc1: Enhanced indoor air quality strategies
posted by Marina Curto on Mar 8, 2019, 5:32 am

We are working on a New Construction - Warehouse project that has two separate spaces (offices + warehouses). There are no densely occupied spaces with the expected occupancy considered. Are we...

Last reply: Afogreen Build, Mar 21, 2024, 11:47 pm

Non-linear primary direction of travel.

NC-v4 EQc1: Enhanced indoor air quality strategies
posted by Michelle Halle Stern on Jul 14, 2023, 12:44 pm

Our entry includes a centered revolving door with people doors on either side. The path of travel from the people doors requires people entering to change directions toward the center of the room...

Last reply: Afogreen Build, Mar 13, 2024, 4:43 am

Determining air contaminants (Option 2- Mechanically Ventilated Spaces- D (Additional Source Control Monitoring)

NC-v4 EQc1: Enhanced indoor air quality strategies
posted by Quentin Jackson on Oct 27, 2017, 2:29 am

Hi all,

When pursuing additional source control monitoring, is there any guidance on it to show what sources you should consider or look at?

I'm looking for some...

Last reply: Talia Mamayek, Feb 23, 2024, 10:54 am