Where is water directed during hydraulic ventilation?

In hydraulic ventilation, the primary goal is to clear smoke and heat from a structure by directing water out of windows or doors. This technique effectively utilizes the energy of the water as it turns into steam, creating a flow that helps to pull smoke and heated gases out of the building. By directing water outside, it enhances airflow and improves visibility for firefighters, while also reducing the overall temperature within the structure. This method is especially valuable when searching for victims or controlling a fire, as it aids in creating a safer environment for both firefighters and potential occupants. In contrast, directing water into the structure, into the basement, or directly onto the fire would not facilitate the evacuation of smoke and heat, and may even complicate the situation within the building.