What kind of ventilation is typically recommended during high smoke situations?

Positive Pressure Ventilation is often recommended during high smoke situations because it effectively clears smoke from a structure and enhances visibility for firefighters. This method involves introducing a high-volume stream of air into the building, which creates a pressure difference that forces the smoke out through openings. By actively pushing smoke out, it helps create a safer environment for both occupants and firefighters, reducing the risk of smoke inhalation or entrapment.

This technique is particularly useful when you want to improve search and rescue efforts or allow for more effective firefighting operations within a smoke-filled environment. It helps in rapidly changing the conditions inside the building, thus lowering the overall heat and smoke levels. Additionally, it can assist in preventing the spread of fire by controlling smoke movement.

In contrast, other methods such as natural ventilation depend on external factors like wind and temperature, which may not be effective in high smoke conditions. Negative Pressure Ventilation can pull smoke out but may not be as efficient as positive pressure in certain scenarios, and exhaust ventilation typically refers to removing smoke through existing openings without controlled air flow.