Basement Ventilation with Jet Fans & Smoke Spill Exhaust Fans.
According to Revised NBC 2016, Mechanical ventilation system shall be designed to permit 12 air changes per hour in case of fire or distress call.
For enclosed underground car parks without provision for natural ventilation, a minimum ventilation rate of 6 air changes per hour shall be provided to keep contaminants within acceptable hygiene limits. In large basements, each compartment shall be independently ventilated at the minimum rate of 6 ACPH.
