What is the pressure for a 1 ¾" Courtyard Pack with a length of 150'?

To determine the correct pressure for a 1 ¾" Courtyard Pack with a length of 150 feet, it's essential to consider the calculated friction loss and the desired flow rate.

In fire service operations, a standard operating guideline is to provide sufficient pressure to achieve effective flow while accounting for friction loss over the length of the hose. For a 1 ¾" line, the typical friction loss is approximately 15-20 psi per 100 feet at a flow rate of 150-200 gallons per minute (GPM). Therefore, when calculating for a 150-foot line, you would first consider the friction loss associated with that length.

Using a standard friction loss of about 15 psi per 100 feet, we can deduct that:

• For 100 feet, the loss is 15 psi.

• For an additional 50 feet (which is half the 100 feet), the friction loss would be roughly 7.5 psi.

Combining the friction loss gives a total of around 22.5 psi for the entire 150 feet. Considering additional factors such as nozzle pressure and elevation, the total operational pressure should be increased.

The pressure of 90 psi is a commonly accepted working pressure for a 1 ¾