Approximately how much water is delivered from a 1-1/4-inch smooth bore nozzle at 50 psi?

The volume of water delivered from a nozzle can be calculated using the formula for smooth bore nozzles, which is expressed as Q = 29.7 × D^2 × √P, where Q is the flow rate in gallons per minute (gpm), D is the diameter of the nozzle in inches, and P is the nozzle pressure in pounds per square inch (psi).

In this case, with a diameter of 1-1/4 inches (or 1.25 inches) and a pressure of 50 psi, we can apply the formula as follows:

First, square the diameter:

1.25^2 = 1.5625

Next, multiply by the constant (29.7) and the square root of the pressure:

Q = 29.7 × 1.5625 × √50

Calculating the square root of 50 gives approximately 7.07. Therefore, the equation becomes:

Q = 29.7 × 1.5625 × 7.07

Calculating that gives:

Q ≈ 29.7 × 1.5625 × 7.07 ≈ 328 gpm.

This aligns with the provided answer, indicating that at a pressure