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Use of ERV for Janitorial Exhaust

NC-v4 EQc1: Enhanced indoor air quality strategies
posted by Carolyn Risley on Sep 21, 2022, 10:07 am

Knowing that in ERVs a small amount of exhaust air seeps/leaks into the supply air stream, is it possible to use an ERV to exhaust air for janitor closets, etc. for credit compliance?  The credit...

Future Solar Panels on Roof

CS-v4 SSc5: Heat Island Reduction
posted by James Jin on Sep 16, 2022, 11:55 am

Hi all,

I am working on a project with rooftop solar panels planned. A portion of the solar panels will be initially installed during building construction, and the rest will be installed...

Last reply: James Jin, Sep 16, 2022, 1:08 pm

FAR Calculation

NC-v4 SSc4: Rainwater management
posted by Kene Akunne on Sep 6, 2022, 2:26 pm

Please can someone explain how to calculate residential...

Lighting tab- unconditioned spaces

NC-v4 EAp2: Minimum Energy Performance
posted by Paul Caicedo on Aug 17, 2022, 1:38 am


I am using DesignBuilder to export the minimum energy performance calculator spreadsheet; unconditioned spaces are not filled in the Tab Lighting.

I can't find if lighting...

Last reply: Marcus Sheffer, Aug 24, 2022, 7:02 pm

Minimum Energy Performance Calculato

Pilot-Credits EApc143: Zero Energy Performance Index (zEPI) ACP
posted by Priscillia Champagne on Aug 19, 2022, 1:41 pm

For the benefit of all :


Does recessed lighting under a canopy have to be accounted for in SSc6?

CS-v4 SSc6: Light Pollution Reduction
posted by Wen Zhang on Aug 16, 2022, 9:30 am

We are working on a project where recessed pot lights are installled under a canopy. As per IES TM-15-11, Addendum A, "to determine BUG ratings, the photometric data must include data in the...

Last reply: Bill Swanson, Aug 19, 2022, 10:09 am

Water test location

EBOM-v4 WEc3: Cooling tower water use
posted by Clive Lacey on Aug 16, 2022, 2:01 pm

Water test for Cooling tower should be done on site?

We have the water test result from the two reservior which are so far from the project site (about 70-80 km). However these reservior...

Definition of "one building"

CS-v4 MPR2: Must use reasonable LEED boundaries
posted by James Jin on Aug 5, 2022, 2:19 pm

Hi all,

I have a question regarding the definition of a building. Under the 2nd requirement of the LEED v4 BD+C Reference Guide, Minimum Program Requirements section, it says that "...

Last reply: James Jin, Aug 10, 2022, 12:34 pm


NC-v4 SSc6: Light Pollution Reduction
posted by Irene Chung on Jul 28, 2022, 9:58 am

Does a greenhouse need to be included in the...

Last reply: Bill Swanson, Aug 5, 2022, 9:29 am

Greenhouse- Regularly Occupied?

NC-v4 EQc5: Thermal comfort
posted by Irene Chung on Jul 28, 2022, 10:02 am

I am working on a new university building project pursuing LEED v4 BD+C New Construction, and it includes a greenhouse. The greenhouse is a separate building from the main project building. ...

Last reply: Emily Purcell, Jul 29, 2022, 9:15 am