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Fan Powered Terminal Unit MERV-13 Filtration

NC-v4 EQc1: Enhanced indoor air quality strategies
posted by Leslie Paras on Dec 2, 2020, 2:24 pm

Is the recirculated air delivered by a Fan Powered Terminal Unit required to be filtered by a...

Last reply: Karen Joslin, Jul 23, 2021, 12:48 pm

Nonpotable water source

NC-v4 WEc2: Indoor water use reduction
posted by Ricardo Sá on Oct 2, 2018, 8:04 am


according to Reference Guide, Nonpotable water is water that does not meet drinking water standards.

Given this, if water from well is classified as Nonpotable water by...

Last reply: Francesca g, Jul 23, 2021, 11:07 am

LEED V3 EAp2 Minimum Energy Performance: Exterior Lighting power prerequisite

NC-2009 EAp2: Minimum Energy Performance
posted by Tomasz Kolsicki on Jul 23, 2021, 5:41 am


I am currently answering review comments from certification unit for C&S office buiilding. We are struggling with exterior lighting issue, because proposed external lighting...

which ratign system can choose for Colleges and Universitie?

LEED Rating System Selection
posted by abduxukur zayit on Jul 23, 2021, 2:36 am


i am from China, and

1) wonder which ratign system is applicable for ASSESSMENT of Colleges and Universities ?

2) is the rating system can be used asssess WHOLE CAMPUS of...

about the selection of LEED rating system

LEED Rating System Selection
posted by abduxukur zayit on Jul 22, 2021, 10:55 pm


i am PhD student here in Tianjin University. i am writting my thesis and one chapter of my thesis about introduction and analysis of LEED. Cause of my thesis related to "Establish zero...

ASHRAE 90.1-2013 for LEED v2009

CS-2009 EAc1: Optimize Energy Performance
posted by Elena Arca on Jul 22, 2021, 5:48 pm


I inherited a LEED project during the...

Default materials cost calculation and LEED V4.1 ID+C

LEED v4.1 Discussion Forum
posted by John Masters on Jul 23, 2021, 8:29 am

Can we use the default (45%) for total materials cost for a LEED V4.1 ID+C interiors project? I am hearing that we can but the most current copy of the LEED guidebood for ID+C states that for ID+...

Health Product Declarations

CI-v4 MRc5: Building product disclosure and optimization - material ingredients
posted by John Masters on Jul 21, 2021, 5:09 pm

We are getting HPDs that have been created by the manufacturer using "HPDC Online Builder / Health Product Declaration v2.2". Are these valid to be counted as an HPD in BPDO/Material Ingredients...

Last reply: John Masters, Jul 23, 2021, 8:05 am

Option 2 Strategy E for an Atrium area- No ceiling areas (Open to roof deck above)

NC-v4 EQc6: Interior lighting
posted by John Covello on Jun 11, 2021, 4:48 pm


For Option 2, Strategy E. 

For the Interior Lighting Calculator how would you input ceiling area surface reflectance data for a space that is open to the roof deck? Do you...

Last reply: Afogreen Build, Jul 23, 2021, 12:22 am

Self Certification for Emissions

NC-v4 EQc2: Low-emitting materials
posted by Michelle Rosenberger on Sep 24, 2019, 2:05 pm

I have a letter from a major manufacturer who is indicating that they have performed an emissions test on one of a line of similar chemical products. That they have determined that the product...

Last reply: Denice Staaf, Jul 22, 2021, 5:22 pm