What is required to maintain high water pressure in a firefighting scenario?

Maintaining high water pressure during firefighting scenarios is crucial for effective suppression efforts. Using long hoses with a larger diameter is key to achieving this because larger-diameter hoses reduce the effects of friction loss, which can occur as water travels through the hose. This reduction in friction loss helps to maintain greater pressure at the nozzle, ensuring that firefighters can deliver water effectively and with enough force to combat fires.

Short hoses with a narrow diameter are generally not advisable in this context as they can increase friction loss, making it more difficult to maintain high water pressure at the nozzle. High-pressure nozzles can shape the stream and direct it but do not, by themselves, ensure high pressure is maintained throughout the entire system, particularly if the hoses are not appropriate. Therefore, relying on long hoses with larger diameters is the best practice for maintaining the necessary pressure for effective firefighting operations.