Stairway Pressurization
Stairway Pressurization
(OP)
Hello. I am designing a pressurization for stairway in a 10 story building. The supply fan is on the roof and the relief duct is located in the second floor ceiling. How do I determine the supply cfm?





RE: Stairway Pressurization
Use absolute temperatures (rankine)
height of building
gaps through doors
max allowable PD in stairs per code
Use VFD for balancing
Check the local codes for additional requirements.
Do you need vestibule pressurization? or elevator pressurization?
Good luck
knowledge is power
RE: Stairway Pressurization
RE: Stairway Pressurization
A star for you mate.An important point conveniently forgotten by designers!
RE: Stairway Pressurization