What is the flow rate for a 1 ¾" 150' Courtyard pack with a 15/16" SB nozzle?

The flow rate for a 1 ¾" hose with a 15/16" smooth bore nozzle can be calculated using the standard formula that combines hose diameter, nozzle size, and operating pressure. In this case, 90 psi is recognized as an appropriate operating pressure for a 1 ¾" line with a 15/16" nozzle in this context.

When using a 15/16" smooth bore nozzle, the expected flow rate at 90 psi is approximately 185 gallons per minute (GPM). This is consistent with fire service standards and practices that dictate the performance of different nozzle sizes and their effective flow rates under pressure.

The correct answer shows a flow rate of 185 GPM at 90 psi, which aligns with industry standards for the specified equipment configuration. This knowledge is critical for firefighting personnel to ensure effective water delivery while maintaining safety and optimizing engine performance during operations.