During hydraulic ventilation, where is water directed?

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During hydraulic ventilation, water is directed out a window or door to effectively remove smoke, heat, and gases from a structure. This method utilizes the force of water to create a pressure difference that helps to draw out the hot gases and smoke, thus clearing the air in the affected area.

Directing water outside allows for a more controlled and efficient expulsion of the hazardous environment created by the fire. It helps improve visibility and conditions for firefighters who are operating within the structure and provides a means to enhance the safety of occupants and responders by reducing the temperature and toxicity levels inside.

The other options suggest directing water in ways that would not provide the same benefits. For instance, directing water into the fire area could exacerbate the fire or hinder control efforts. Spraying water across the roof may not effectively improve air quality within the structure itself, nor does directing water into an adjacent room address the conditions within the room at the fire's origin.

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