Installing your own Lawn System

by jasonbackus

By Kent Yamane, Lad Irrigation of Moses Lake (Part 1)


Have you ever wanted your own underground lawn sprinkler system? It’s easier than you think. Let us at Lad Irrigation help you get started.

Homeowner/Residential Systems

Providing you with professional advice and planning assistance, this sprinkler design service covers all the bases with a complete set of sprinkler system plans to help you install your lawn irrigation system with confidence. Your computer drawn design package includes an itemized shopping list of everything you need to complete the project. And if you have a question before, during or after installation, call your local Lad Irrigation dealer.

What You Provide:

1Using this Design Service first involves gathering some important information about your water system and yard. Take a few simple measurements and record the information on a piece of paper. You will be asked to provide: Water available for your irrigation system (water pressure, meter size, service line size) and a sketch and accurate dimensions of your property.) We can also help you with this information.


What You Get Back2

You will receive a detailed, computer-drawn plan specifying the location of irrigation system components such as valves, lines and sprinklers.

Spray patterns for each sprinkler head are also identified for each lawn area. In addition, the design package provides you with a list of supplies needed to complete your installation.




So let’s get started;

To start the process you will need to get the following: The first is your technical and personal information. The second is paper to draw a sketch of your yard. Gather the information requested below in steps 1 through 5. This determines the number and types of sprinkler heads you can operate on each valve zone.


1) What Is Your Water Pressure?

3Screw a pressure gauge onto an unregulated outside faucet. Make sure no water is running anywhere inside or outside your house. Turn on the faucet with the gauge attached. The gauge shows your water pressure in pounds per square inch (psi).

Record: Pounds per square inch (psi)



2) What Is Your Water Meter Size?

4The meter size ( 5/8″,3/4″ or 1″) is usually stamped on the outside of the meter. If you can’t find the size, just call the water utility company and ask for that information.

Record: Write the meter size (5/8″,3/4″ or 1″)





3) How Large Is Your Service Line?

5Find the pipe that runs from the water meter to your house. Wrap a piece of string around the pipe, mark it, then measure how much string it took to go around the pipe. Check your string length on the table below to find your service line size.

Record: 3/4″, 1″ or 1 1/4″ on your worksheet

For example, if your string measures 4″ and you have galvanized pipe, your service line is 1 inch.


Determining Size of Service Line:


4) What Is Your Home’s Water Flow?

6Get a measurable container, like a 5 gallon bucket, make sure no other water is running in or outside the house, turn the faucet on all the way and time how long it takes to fill the container.

Record: Gallons per minute (GPM)

Determine gallons per minute (GPM) with the following formula:



5) Sketch Your Yard


Divide your lot into sections such as front lawn, side lawn, flower beds, slopes, etc., and label all those areas you want watered. Also be sure to include the house, driveway and sidewalks. If you have special watering preference such as bubblers in planting beds or a drip irrigation zone, note that on your drawing as well.

IMPORTANT: The computerized plan you receive will only be as accurate as your drawing.

Next, we will go over how to install your lawn system.