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Buildings with different uses under one group certification?

LEED Rating System Selection
posted by Barbora Cicvárková on May 13, 2020, 7:23 am

Hi to all,

please, I have a question about registration. We have a project that consists of five sections, of which four will be offices (Core and Shell approach) and - newly - one section...

Last reply: Barbora Cicvárková, May 14, 2020, 3:48 am

EDP database- useful format

NC-v4 MRc2: Building product disclosure and optimization - environmental product declarations
posted by Przemysław Rejczak on May 6, 2020, 12:05 pm


I am looking for a EPD database for Eurpoe with some useful format such as CSV, so I can use it to calculations

Do you know if such database exist and how to get it?


Last reply: Hudai Kara, May 10, 2020, 2:34 pm

Baseline System type and size

CI-v4 EAp2: Minimum Energy Performance
posted by Tzung-Han Ho on Apr 30, 2020, 6:16 am

Hi all,

I got a review comment as following:
"It appears that the Baseline Case water side equipment (i.e. Chillers, etc.) was selected/sized based on the project LEED CI peak...

Last reply: Tzung-Han Ho, May 1, 2020, 10:37 pm

LCA for a renovated building?

NC-v4 MRc1: Building life-cycle impact reduction
posted by Agata Mozer on Feb 14, 2020, 6:02 am

Can Option 4 LCA be selected for a project of an existing building which is being renovated and with substantial demolition works? Is it still allowed to use Option 4 if a bit more than 25% of...

Last reply: Paula Melton, Apr 17, 2020, 9:12 am

Demand Controlled Ventilation

NC-v4 EAp2: Minimum Energy Performance
posted by Vassil Vassilev on Apr 2, 2020, 7:18 am


There is a question regarding the requirements related to DCV – and specifically Exception 4. – “Spaces where >75% of the space design OA is required for makeup air...

Last reply: Francesco Passerini, Apr 2, 2020, 10:31 am

Stairwell Lighting zone

NC-v4 EAp2: Minimum Energy Performance
posted by Agata Mozer on Jan 28, 2020, 8:21 am

According to ASHRAE 90.1, section „g. Stairwell Lighting – Lighting in stairwells shall have one or more control devices to automaticcly reduce lighting power in any one controlled zone...

Last reply: Waleed AlGhamdi, Apr 1, 2020, 12:44 pm

Heating coil as a preheat in DOAS with VRV

CS-v4 EAp2: Minimum Energy Performance
posted by Przemysław Rejczak on Mar 4, 2020, 12:00 pm

Dear Everyone

I am quite confused because I got a review comment recently where Reviewer suggests to exclude preheat coils from Baseline System 7. 

It is a project located in Poland...

Last reply: Tyler Thumma, Mar 25, 2020, 1:30 pm

Light reflection from the facade

NC-v4 SSc6: Light Pollution Reduction
posted by Agata Mozer on Feb 13, 2020, 5:16 am

Ligting engineer asked me if he should include light reflection from the facade in the ligthing simulation for Light trespass Option 2. Could anyone confirm this? Our project is in LZ2 and is a...

Last reply: Bill Swanson, Feb 13, 2020, 8:35 am

roof under ventilation ducts and glass overhang

NC-v4 SSc5: Heat Island Reduction
posted by Agata Mozer on Dec 12, 2019, 5:34 am

I have two questions regarding heat island reduction credit:

1. I would like to confirm if in LEEDv4...

Last reply: emily reese moody, Feb 13, 2020, 1:15 am

CO2 Monitoring- sensor level

NC-v4 EQp1: Minimum indoor air quality performance
posted by Przemysław Rejczak on Jan 31, 2020, 8:17 am

Dear Everyone,

I have a question regarding to Monitor carbon dioxide (CO2) concentrations within each thermal zone...

Last reply: David Hubka, Feb 1, 2020, 1:05 pm