OK, so a reviewer directed me to the 2011 ASHRAE HVAC Applications Handbook. I have the 2015 Handbook, and there in Section 53.7 is an equation which, adjusted for units, has differential Pa at...

Hi all,

I am working on a graduate housing project that is all residential, and some apartments have doors directly to the outdoors. What are the walk-off mat alternate requirements in...

We are specifying a recessed walk off mat for the building in the vestibule (8' long). I remember that if the walk off mat is 10', a point is granted. Do you know if the walk of mat needs to be...

In our project, we have a janitor room adjacent to a toilet and these both rooms have exhaust duct which are combined together & exhausted directly to outside without re circulation.

...

We have a project that has a washer & dryer in the corner of a building services room, for periodic/sporadic use. If the dryer vents directly out of the building (exterior wall) does this...

Hello there,

For garage spaces that are designed for CO/NO₂ monitoring and have a neutral (Exhaust air – Supply air = 0) pressurization.
Please clarify how the average pressure...

Why Entryway systems are at least 10 feet not 9 or 8?

Dear all,
could you please help me with the following question - on our project we have revolving doors with entryway systems installed, its diameter is 2,8 m. Entering way length through...

Hello,

I am working on a project in SE Asia. As with many resorts in SE Asia the lobby is sheltered but open to the exterior of the building. Does this count as the...

Hi
Can someone please explain what exactly is meant by a dedicated exhaust system?
Also - are the self closing doors a requirement or an option? (The reference guide sais this is...