Stairwell Pressurization Calculator

Design stairwell pressurization systems for fire safety and smoke control.

Total number of floors served by stairwell.
floors
Area of each stairwell door.
ft²
Desired pressure in stairwell.
in w.c.

Results

Total Supply Fan CFM-CFM
CFM with 1 Door Open-CFM
Maximum Door Force-lbf
References: NFPA 92, Section 5.2 (Stairwell Pressurization); IBC Section 909