At what level of friction loss is the "Red Line" considered reached?

The "Red Line" being reached refers to an established threshold in firefighting operations, particularly concerning hose and friction loss. When friction loss reaches 36 psi per 100 feet, it serves as a critical indicator of the effectiveness of the hose layout and the pressure required to deliver water effectively to the fire scene.

This level of friction loss is significant because it usually indicates that the system may struggle to maintain adequate pressure for effective firefighting operations. Operations can become less efficient, and firefighters may experience challenges in maintaining water supply pressures as this level is approached. The 36 psi per 100 feet benchmark helps firefighters and engineers assess their current operational capabilities and make necessary adjustments when deploying hoses.

Understanding this threshold allows crews to strategize effectively, ensuring that they do not exceed friction loss levels that could compromise water delivery. Recognizing the implications of exceeding this red line is crucial for maintaining safety and operational success in firefighting missions.