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Dividing large building into smaller ones

Healthcare-v2009 EAp2: Minimum Energy Performance
posted by Davide Liviero on Sep 15, 2020, 6:20 am

Hello everyone,

I am modelling a 60 000 m2 hospital using Design Builder. Unfortunately, the simulation of the whole building is extremely long, requiring up to a whole week. As a solution...

System 3 Heating source

NC-v4.1 EAp2: Minimum Energy Performance
posted by Davide Liviero on Sep 3, 2020, 8:49 am

Hello everyone,

I am creating the baseline model for an office and have been suggested to use System 3 as HVAC sytem template for it. Since in the proposed model I use electricity as...

Last reply: Davide Liviero, Sep 4, 2020, 11:10 am

Target Finder outside the US

NC-v4.1 EAp2: Minimum Energy Performance
posted by Davide Liviero on Jul 29, 2020, 5:52 am

Hello everyone,

I ahve read that for LEED v4 BD+C Target Finder results are not required for projects outside the USA. Is this aspect still valid for LEED v4.1?

Thank you in advance...

Last reply: Marcus Sheffer, Jul 29, 2020, 9:35 am

Campus approach: CHP modeling (LEED v4.1 + ASHRAE 90.1-2016)

NC-v4.1 EAp2: Minimum Energy Performance
posted by Alessandro Zuanon on Jul 24, 2020, 7:34 am


the project regards a campus (multiple buildings) served by a trigeneration plant (plant producing electricity, heat and chilled water). LEED versione is v4.1. 


Last reply: Marcus Sheffer, Jul 24, 2020, 2:25 pm

EAp3 and WEp3 Third Party Source VS USGBC Approved Data Template

LEED v4.1 Discussion Forum
posted by Davide Liviero on Jul 23, 2020, 5:06 am

Hello everyone,

I am working on LEED v4.1 BD+C Credit EAp3 (but the problem applies also to WEp3) and I am struggling to understand what the USGBC considers as approved data template....

Renewable Energy Calculator

LEED v4.1 Discussion Forum
posted by Davide Liviero on Jul 13, 2020, 10:33 am

Hello everyone,

I am currently working on LEED v4.1 BD+C Credit EAc5: Renewable Energy but I cannot find the LEED Renewable Energy Calculator available online for download. Is anybody able...

Last reply: Jennifer Atherton, Jul 22, 2020, 4:28 pm

Rainwater Collected for Irrigation

NC-v4 SSc4: Rainwater management
posted by Andrea Valentini on Apr 2, 2019, 6:47 am

Hashir Usman LEEDuser Basic Member May 5, 2020- 8:18 am Hi Andrea, LEED Guide says ''All runoff from the chosen percentile of precipitation events must be managed such that there is no surface discharge from the site. Techniques include, but are not limited to, infiltration, storage and re-use, bioretention, open-grid pavement, and the reduction of impervious area.'' So, I guess it is to use all those techniques that best mimic the natural hydrological conditions before any development occurred. And I read it in this forum that only storing and reusing the runoff volume does not comply...

Last reply: Gustavo De las Heras Izquierdo, Jul 15, 2020, 4:55 pm

Hotel Natural Gas Kitchen

NC-v4 EAc7: Green power and carbon offsets
posted by Mario Angelo Pinoli on Jul 3, 2020, 5:26 am


we're pursuing LEED NCv4 certification for a luxury hotel.

All the HVAC systems will be electric, but we'll have a kitchen serving the hotel restaurant which will use gas.


Last reply: Marcus Sheffer, Jul 3, 2020, 12:17 pm

Stores with commercial refrigeration systems

Retail-NC-v4 EAc6: Enhanced Refrigerant Management
posted by Francesco Passerini on Jul 1, 2020, 4:34 am

The refrigeration system installed in the retail building uses CO2 only as refrigerant, which is a...

Manufacturer definition

NC-v4 MRc2: Building product disclosure and optimization - environmental product declarations
posted by Muhammad Al Mahasneh on May 21, 2020, 4:55 am


how does LEED define a manufacturer? It seems quite a no-brainer, but we got a lot of different "commercial" manufacturer names (with different names on bills, invoices,...

Last reply: Sagar Raghuwanshi, Jun 25, 2020, 9:53 am