About Sprinkler Zones

How a plan is made

The heads go on the lawn head to head: every head throws to the next, so every spot gets water from at least two. Corner heads water a quarter circle, edge heads a half, the rest a full circle. Heads are grouped into zones that use no more than three quarters of your flow, the pipe in every stretch is sized for the water it carries at no more than 5 ft per second, and the pressure is worked out to the last head on each zone, after the backflow preventer, the valve and the pipe.

How it is checked

Before a page is built, every plan is sampled point by point for two-head coverage, every zone is checked against your flow and the heads' pressure, and every pipe against its velocity limit. A yard and water that cannot run a system (rotors on 45 psi, a lawn that would need more than a dozen zones) is not published.

For irrigation supply counters

Put the planner on your own site: your customers arrive with a parts list and buy it from you. Write to us.

How it is paid for

Plans are $9 each. Some pages link to parts on Amazon; as an Amazon Associate we earn from qualifying purchases. Sprinkler Zones is run by GTMFM.NO.