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Runoff calculation- typical values for infiltration loss

NC-v4 SSc4: Rainwater management
posted by G.J. Teunissen on Jan 4, 2024, 10:57 am


What are the standard values for the ...

MRpc103 Integrative Analysis of Building Materials

NC-v4 INc1: Innovation
posted by Lisa Bolle on Oct 24, 2023, 5:12 pm

As our project team was performing the analysis of three products, we realized that another potentially useful strategy would be to compare three similar products and use the integrative analysis...

Last reply: Angela Nekoranik, Jan 4, 2024, 10:30 am

Option 2 Path 1- any experience to share?

NC-v4.1 LTc3: High Priority Site and Equitable Development
posted by Emily Purcell on Jan 3, 2024, 4:52 pm

Hi LEED users! We had a thread in this forum back in 2022 about Option 2 Path 1, with a lot of good ideas for how to potentially earn the credit. But I don't think we ever had an update on...

Public park adjacent to the project boundary

NC-v4.1 SSc3: Open space
posted by Eslam Elshorbagy on Dec 20, 2023, 3:57 pm


The project is not meeting the requirements. We only achieved 26% for outdoor space and 15% for vegetated space. Can I use a public park area that shares the same boundary as the...

Last reply: Emily Purcell, Jan 3, 2024, 2:05 pm

Are Coco Mats accepted as entryway mats?

NC-v4 EQc1: Enhanced indoor air quality strategies
posted by Jason Franken on Nov 3, 2022, 4:42 pm

Has anyone had success using coco mats (made from material derived from coconut husks) as the entryway system?  I know that...

Last reply: Sarah Buffaloe, Jan 3, 2024, 10:36 am

LM-83 and spaces greater than 10,000 SF

Pilot-Credits EQpc116: Daylight in nonregularly occupied spaces
posted by Stephanie Graham on Mar 23, 2021, 12:24 pm

Opening a new comment.

Our Project is a large university campus thermal energy plant and the chiller room alone is over 10,000 SF and the largest space in the building.  Our daylight...

Last reply: Collin Robinson, Jan 3, 2024, 10:02 am

One Tenant- two spaces across a public corridor- can this be certified as one project?

CI-v4 MPR2: Must use reasonable LEED boundaries
posted by Helen Kessler on Oct 31, 2017, 2:16 pm

The tenant is located in a large multi-tenant building and has two leased spaces which are separated by a public corridor.  Seems to me this is no different from a tenant that is on multiple...

Last reply: Dave Hubka, Jan 3, 2024, 8:25 am

Chinese Green Electricity Certificate "GECs"

NC-v4.1 EAc5: Renewable energy
posted by Josef Andersen on Jan 2, 2024, 4:39 am


It came to my knowledge that USGBC does not accept Chinese Green Electricity Certificate "GECs". 

Allthough I have heard that projects have been usning GECs and earned...

Last reply: Marcus Sheffer, Jan 2, 2024, 2:55 pm

EPD Stud- Separate products count towards 20+ goal under 1 EPD

NC-v4 MRc2: Building product disclosure and optimization - environmental product declarations
posted by Allison Para on Dec 29, 2023, 9:56 am

Hello LEED Pros,

I have a letter and an EPD from a manufacturer, and I want to confirm the letters validity regarding how each seperate product counts as 1 product point under the EPD,...

Last reply: Allison Para, Jan 2, 2024, 1:38 pm

No Cooling Tower

CS-v4 WEc3: Cooling tower water use
posted by Adriana Hansen on Jan 2, 2024, 11:46 am

Regarding the alternative compliance path to the LEED v4 credit Cooling tower water use (BD+C)<https://www.usgbc.org/node/2611780>, a...