We are doing a major renovation on an existing building. The project is seeking LEED NC certification and we are having trouble interpreting how the ASHREAE 62.1 standard needs to be applied to...

For a major renovation project, is it acceptable to use a much larger occupant number for the HVAC systems design and number of fixtures based on usable square footage and then use the much...

I’m helping out a project team in Italy with their LEED project. This is a mid-rise residential building that has a 2-story underground parking garage. It has, besides the main entrances (...

Does anyone have a sample for the upload required for IEQ P1:

"Graphic and numeric summary of the airflow analysis performed. Include the boundary conditions used for the analysis,...

We have a building that only has fan-assisted ventilation, meaning that there is no air-handler or ductwork - there are only exahust fans and air-movement fans in certain locations to move air in...

I'm working on a system with heat pumps and...

ASHRAE released an app for iPhone, iPod touch, and iPad that allows you to perform comprehensive minimum ventilation calculations for a wide variety of commercial buildings based upon Standard 62...

Hi everybody,
from the precedent thread I understood that when I have a 100% OA system and multizone, I have to use Ev=1.

Now, let´s go to the question, I have a single...

I am doning a new project, and using natural ventilation for one of the rooms. I do read carefully the requirements of IEQP1, but the LEED Guide does not require outdoor air quality test if...

We've got a 5 storey...