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MDE's simple equation for estimating surface area

CS-v4 SSc4: Rainwater management
posted by Erkki Seinre on Jan 9, 2020, 6:08 am

I came across a video about treatment area calculation on USGBC website: ...

Baseline hot water generation

NC-2009 EAp2: Minimum Energy Performance
posted by Ciaran McCabe on Mar 2, 2016, 6:48 am

The Design Preliminary Review has been completed on one of my projects and we have one query from EAp2 which appears unclear. It states that ‘heating equipment should be heat pumps in both...

Last reply: Eva Denton, Jan 9, 2020, 6:10 am

LEEDv4.1 Acoustic- Can residential projects no longer achieve this credit?

LEED v4.1 Discussion Forum
posted by Sophie Kerr on Jan 8, 2020, 5:11 pm

I noticed LEED v4.1 removes mention of residence and residential. Table 1 removes all 'residence' reference and table 2 removes 'apartment and condominium'. Can residential projects no longer...

Last reply: Sophie Kerr, Jan 8, 2020, 5:18 pm

Anti-Ligature fixtures

NC-v4 WEp2: Indoor water use reduction
posted by Leanne Conrad on May 25, 2018, 12:59 pm

The reference guide is clear that special or unique water closets can be excluded from the credit calculations, my query is does this expand to special or unique fixtures? Our client requires...

Last reply: Stewart Whitcomb, Jan 8, 2020, 5:07 pm

MRc3 and reused furniture

NC-2009 MRc3: Materials Reuse
posted by Jeff Wiedmeyer on Jan 7, 2020, 6:26 pm

My client wants to know what credits might be applicable to the re-use of furniture from another one of its projects for use in the current project.  I told the client that I believe the only...

Last reply: Jeff Wiedmeyer, Jan 8, 2020, 3:08 pm

International Compliance Path

NC-v4.1 MRc4: Building product disclosure and optimization - material ingredients
posted by Martha Lewis on Jan 8, 2020, 7:44 am

Very curious why both LEED 4 and 4.1 restrict the Candidate List to "the version in effect June 2013"? The wording appears to indicate that of the 3 lists, only the Candidate list is restricted...

Installed and not Installed HVAC

CS-2009 EAp2: Minimum Energy Performance
posted by PAULA HERNANDEZ on Jan 3, 2020, 9:50 am


I am modeling a C&S building for the Construction Submittal, and I have to adjust the Design Submittal Energy Model because the Owner change the brand of the VRF systems.


Last reply: PAULA HERNANDEZ, Jan 8, 2020, 6:10 am

Rc value

NC-v4 EAc6: Enhanced Refrigerant Management
posted by Lise Dannesboe on Jun 1, 2018, 10:08 am


To caluclate the Rc-value we need to know the amount of refrigerant and the cooliing capacity. As LEED v4 puts it:

Rc: Refrigerant Charge
(0.065 to 0.65 kg of refrigerant...

Last reply: Sara YOUSSOUFI, Jan 8, 2020, 6:04 am

TI vs CS Scope Timing Gap

NC-v4.1 EAp2: Minimum Energy Performance
posted by Levi Jimenez on Jan 7, 2020, 6:56 pm

We have a LEED NC v4.1 project that is currently in schematic design, and the Core Shell construction will be completed well before the TI scope.  I recall reading somewhere that we only need to...

Sunset date and timelines

LEED Reviews: Appeals, Design/Construction Submittals, and more
posted by suveera kakkar on Nov 15, 2017, 4:21 am


I am working on a CS-2009 project with precertification and split review. As the sunset date is set for June30, 2021 we are trying to set timeline for the submissions. As per my...

Last reply: Tristan Roberts, Jan 7, 2020, 5:48 pm