Which type of ventilation takes advantage of doors and windows on the same level as the fire?

Horizontal ventilation is focused on using the natural airflow created by openings such as doors and windows that are on the same level as the fire. This method is particularly effective in removing heat, smoke, and toxic gases from the fire area, providing a clear route for those inside and allowing for more efficient firefighting operations. By opening up these openings, firefighters can create a flow path that directs smoke and heat out of the structure, while potentially reducing the risk of backdraft and flashover conditions.

This type of ventilation is essential in conditions where heat and smoke build-up are present because it facilitates immediate smoke removal, thus improving visibility and the safety of both occupants and firefighting personnel. Proper execution of horizontal ventilation also assists in controlling the spread of the fire by altering the pressure within the structure, which can be beneficial in containing the fire or preventing it from spreading to unaffected areas.