Smoke Exhaust System Calculator

Calculate smoke exhaust requirements for atrium and large spaces.

Area of space requiring smoke exhaust.
ft²
Height from floor to ceiling.
ft
Enter 1 for natural, 2 for mechanical.
type

Results

Required Exhaust Rate-CFM
Design Smoke Layer Height-ft
Natural Vent Area (if applicable)-ft²
References: NFPA 92, Section 4 (Smoke Management for Atriums); IBC Section 404