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Ventilation Requirements for Sporadically Used Spaces

NC-v4 EQp1: Minimum indoor air quality performance
posted by Santiago Avila on Sep 6, 2023, 7:24 am

Hello everyone,

I have a question regarding which areas should be ventilated. In our project, a residential building, we have spaces on the ground floor designated for flexible work areas...

Last reply: Gustavo De las Heras Izquierdo, Nov 6, 2023, 1:09 pm

Detaining the rainwater runoff-an accepted solution?

NC-v4 SSc4: Rainwater management
posted by Florian Schmidtchen on Dec 8, 2016, 6:13 am

Dear all,
In our project we are planning to follow option 1 path 2. Therefor we provide underground-trench systems and a technical ditch on our project site, which gets inserted creatively...

Last reply: Gustavo De las Heras Izquierdo, Oct 14, 2023, 6:18 pm

Air Economizer laboratory

NC-v4 EAp2: Minimum Energy Performance
posted by Abdulrahman Alshbeeb on Sep 15, 2023, 3:08 am

We have a laboratory with very high indoor air requirements. Due to the high demands on the quality of the room air, no air may be circulated....

Last reply: Tyler Thumma, Sep 29, 2023, 10:12 am

Hybrid recooler

NC-v4 WEc3: Cooling tower water use
posted by Florian Schmidtchen on Aug 8, 2017, 6:05 am

Dear all,

Our MEP Engineer wants to implement a dual recooling system/the hybrid recooler of the series KAVH. For our building type and the location in Germany with strong temperature...

Last reply: Stephani Carter, Aug 2, 2023, 6:09 pm

Monitoring VAV System Airflow Setpoint

NC-v4 EQp1: Minimum indoor air quality performance
posted by J Schütz on May 30, 2022, 5:13 am


the credit language requires: "An alarm must indicate when the outdoor airflow value varies by 15% or more from the outdoor airflow setpoint." In the course of a coordination with...

Last reply: Maria Porter, Jun 8, 2023, 3:49 am

Soil tests requirements

CS-v4.1 SSc2: Protect or Restore Habitat
posted by Katrin Niedermeier on Apr 12, 2023, 7:27 am

Dear all,

according to the BD-C Guide for version v4.1 "testing requirements have been removed" and "soil test results are no longer required" for the documentation. On the other hand the...

Does LEED BD+C Core and Shell have disadvantages against ESG compliance?

LEED Rating System Selection
posted by Leonie Wipf on Oct 18, 2022, 11:09 am

For a new built office the most suitable rating system seems to be Core and Shell. Besides LEED certification the project should demonstrate ESG compliance. Does ist still make sense to get Core...

Enhanced acoustical performance- exterior noise control

Warehouses-NC-v4 INc1: Innovation
posted by Kathrin Wiedermann on Oct 13, 2022, 11:25 am


A german project is going to be buildt on industrial area next to a...

Electric heat pumps- share of EE according to german law

NC-v4.1 EAc5: Renewable energy
posted by J Schütz on Aug 17, 2022, 5:58 am

Dear all,

for our projects in germany its quite controvers to communicate towards the project teams, why electric heat pumps cannot contribute to the credit renwable energy.


Last reply: Marcus Sheffer, Aug 17, 2022, 10:00 am

evaporative cooling in AHU

NC-v4 WEp2: Indoor water use reduction
posted by Arwid Theuer-Kock on Jul 5, 2022, 3:24 am

Hi community,

we have the opportunity to save 500 kW cooling energy wehn we establisch evaportive cooling in  the...

Last reply: Arwid Theuer-Kock, Jul 15, 2022, 5:20 am