For the expansion joints being used in a LEED project for schools v2009, do they have to meet the NRC requirement of 0.70? Currently our sub wants to use Seismic Colorseal, STC 52/OITC 38.

For a VAV (multiple-zone) system should the Design System Primary supply Airflow (Vpsd) sum up the total supply (and not the outdoor) air of each zone?

Does the 25ft referring to a straight line measurement? Or, it's following the building footprint?

Hi, I have demand control ventilation for every AHU.

Hi, I am working on a LEED for Healthcare project (LEED HC v2009). At the moment I am filling out the scorecards. I am bit confused about calculating number of pick hour transients.

The USGBC raised the following query in our project design stage review: "It is not clear that the shower usage reported accurately reflects the usage patterns of the project.

Hi! My project will have a lot of parking spaces that cant be shaded by trees or with open grid pavement.

I definitely like having credit numbers as they save a lot of time in communication and reference.

I have mixed feelings about this issue.

The need to keep FTEs consistent through all credits is stressed though in the case of IEQp1 where for Mechanical Ventilation, table IEQp1-3, for code compliance based on square footage, the Pz (zo