Designer uses the principles of hydraulics to size all the components in the system and to ensure adequate flow and pressure to properly operate all the sprinklers on the project.

Each circuit has four, medium-sized rotor pop-up sprinklers that throw 47 ft (14,33 m) at 55 psi (3,8 bar), and each require 9.8 gpm (2,22 m3/h or 0,62 L/s). The designer has spaced them in an equilateral triangular pattern at 50% spacing, but has chosen a different lateral pipe configuration for each circuit. For reference, the various pipe sections of each lateral have an identification letter.

The designer knows that the water supply must reach even the furthest sprinkler out on the line with a minimum of 55 psi (3,8 bar) to get the desired performance at the selected spacing.