Parking Garage Ventilation Calculator

Calculate ventilation requirements for enclosed parking garages based on IMC/IBC codes and ASHRAE standards.

Total floor area of the parking garage.
ft²
Average ceiling height.
feet
CFM per sq ft: 0.75 for mechanical, 1.5 for natural.
CFM/ft²
1 for yes (reduces CFM 50%), 0 for no.

Results

Garage Volume-ft³
Base Exhaust CFM-CFM
Design CFM with Controls-CFM
Air Changes per Hour-ACH
References: IMC Section 404: Enclosed Parking Garages; IBC Section 406.4.2; ASHRAE Handbook - HVAC Applications Chapter 15