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Stormwater harvesting for car washing

NC-2009 SSc6.1: Stormwater design - quantity control
posted by Margarita Zaritskaya on Nov 1, 2019, 4:02 am

Hi all,

We have an office building with stormwater collector targeting use greywater at car washing station within the building. Can this comply with harvesting water for custodial use as...

Last reply: Tristan Roberts, Nov 4, 2019, 7:23 pm

Modeling CAV systems in system 9

NC-v4 EAp2: Minimum Energy Performance
posted by Przemysław Rejczak on Sep 13, 2019, 9:05 am

Dear Everyone,

I wonder of modeling CAV system in Baseline System type 9. My proposed building is storage with thermostat setpiont 12 C ( 54 F) with natural ventilation.

I have 2...

Last reply: Tyler Thumma, Oct 3, 2019, 1:46 pm

Water cooled chiller operating as chiller/heater

NC-2009 EAp2: Minimum Energy Performance
posted by Vassil Vassilev on Sep 6, 2019, 7:45 am


In the project we working on, there is a water cooled electrically operated chilling package.

This chiller however is used as chiller/heater, whereby during the heating...

Last reply: Marcus Sheffer, Sep 6, 2019, 12:12 pm

A division of recyclables outside the LEED project boundary

CI-v4 MRp1: Storage and Collection of Recyclables
posted by Alina Shilenko on Feb 4, 2019, 9:12 am

Good evening!

Can we keep our wastes in common storage bins and then give them to the contractor who will take our wastes and divide them into 5 parts (...

The solar reflectance index

NC-2009 SSc7.2: Heat island effect - roof
posted by Marina Tykvina on Nov 30, 2018, 5:23 am

In accordance with what method can make measurements of the value of...

Modeling "cool roof"

NC-v4 EAp2: Minimum Energy Performance
posted by Vassil Vassilev on Sep 24, 2018, 5:55 am


The project we are modeling is located in climate zone 6. The proposed case has decided to use “cool roof: with...

Last reply: Marcus Sheffer, Sep 24, 2018, 10:25 am

Project Commercial Interior in existing building.

CI-v4 EAc2: Optimize Energy Performance
posted by Vassil Vassilev on Jul 24, 2018, 7:09 am

The issues is related to the cooling.


The project pursuing LEED CI is renting an floor area, part of a building with a central cooling plant with a cold water chiller and...

Last reply: Marcus Sheffer, Jul 24, 2018, 11:46 am

STC ratings of standard materials?

NC-v4 EQc9: Acoustic performance
posted by Erin Holdenried on Jun 25, 2018, 6:03 pm

Hello - Is there a resource available with published...

Last reply: Ken Shook, Jun 28, 2018, 1:32 pm

Service Hot Water- modeling the circulation pumps for this system

NC-2009 EAp2: Minimum Energy Performance
posted by Vassil Vassilev on Apr 1, 2018, 4:43 am


Regarding modeling the Service Hot Water (SHW) for a project assigned to System 5, our approach was:

  1. SHW load is the same as per Proposed and per Baseline....

Last reply: Marcus Sheffer, Apr 1, 2018, 8:37 pm

Advertisements in Exterior Lighting

NC-2009 EAp2: Minimum Energy Performance
posted by Vassil Vassilev on Jan 17, 2018, 8:07 am


We are modeling a KFC fast food restaurant.

As everybody is aware there are illuminated advertisement in the outdoor walls and some ad signs on the roof.


Last reply: Marcus Sheffer, Jan 17, 2018, 10:50 am