18-28-507.13.1 Solid fuel-burning cooking appliances.
   The minimum airflow for Type I hoods used for solid fuel-burning cooking appliances, grease-burning charbroilers and similar appliances shall be:
 
Number of exposed sides
Formula
For SI:
4 (island or central hood)
Q = 300A
Q = 1.52A
3 or less
Q = 200A
Q = 1.02A
Alternate formula
Q = 100PD
Q = 0.51PD