Can this be achieved if the cleaner's cupboard and the toilets share the same extract system?

I found in ASHRAE 62.1-2004 standard that using a vestibule to provide airlock between garage and regulary occupied spaces is a compilant way to limit the entry of exhaust gases. Is it possible to

Hi, What should we enter as the Separation Method for a Carpark with mechanical supply and exhaust which is open to outside via the carpark ramp. Thanks.

Carpet tile is now an acceptable entryway system per LEED Interpretation Ruling ID#10252 https://www.usgbc.org/leedinterpretations/LISearch.aspx?liaccessid=10252 Carpet tile is a highly desired w

We have 6 Floors of Underground Parking on a high Multi-Use Tower.

Hi All, I am working on a project with a Full Fresh Air HVAC System i.e. No recirculation, while the toilet ventilation system is full extract to the atmosphere.

What is the LEED definition of Hazardous Gas or Chemical?

1) In the C&S 2009 requirements for IEQc5, there is a statement that says "Core & Shell projects that do not have entryway systems cannot achieve this credit." What exactly does that mean?

Will the mechanical room which has all the chillers be considered hazardous space? If it will be, do we need to provide self closing doors in this room for this credit?

Hi everyone, our engineer has a question about calculating the average pascal. His exact questions is: "...but I do not know what they are looking for with the “Average Pressure Differential”.