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Smoke in Common Areas: Smoke from a fire in a flat or maisonette can enter common areas (e.g., corridors, lobbies) due to occupant escape or firefighting activities.

Need for Smoke Control: It is essential to control smoke in common areas to protect stairways and other escape routes.

Ventilation Systems:

Natural or Mechanical: Ventilation systems (either natural or mechanical) are used to control smoke.

Dual Purpose: They protect escape routes (e.g., stairs, evacuation lifts) and assist firefighters.

Extended Travel Distances: Ventilation systems also help comp

0.2.3 Smoke control in common areas