How to plan an underground irrigation system for yards
These are the basics for planning a yard irrigation system. You will be able to measure your yard and calulate how many sprinkler heads will be needed to water your lawn.
You will also be able to plan out a route for laying PVC pipes to get the most efficiency from your watering system.
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Instructions
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Before we plan a sprinkler route, we need to make sure your water supply is adequate for watering your lawn with sprinklers. We do this with a method called "Gallons per minute".
We will most likely tie into the water system through an outside spigot. Take a gallon jug and a watch to see how many gallons per minute your spigot puts out.
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With the flow rate information, you can plan the right size of PVC pipe to use. A common size is 3/4-inch. This size is used for average lawns and it's easy to work with.
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Next, we will plan the water delivery route for the pipes. We will want to plan a "Tee" formation so that each riser will have the same amount of pressure.
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This will help the irrigation system perform at optimum levels. Each sprinkler head should be placed no further than 12 feet away from another head. This will keep the watering area even.
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Some novice landscapers install irrigation systems with uneven water pressure because of the layout of the pipe route.
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A sprinkler route like this will have a lot of pressure at the first head, but the pressure will diminish with each sprinkler down the line making a poor watering system.
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Next, we can plan how to connect to the water supply. If you have a large yard, you will want to divide up the pipe layouts to different sections of the lawn. That way the lawn can get fully watered without drawing too much water from the supply.
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We can also connect the watering system to a timer which controls different lawn sections so the lawn gets watered automatically. This is done with PVC valves which open and close according to the timer.
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The connection to the water supply can be one PVC line that feeds the other lines.
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That's all there is for the basics of an underground watering system.
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Tips & Warnings
Be sure to keep your plans in scale. You can do this best with graph paper where each square represents one foot.
- Photo Credit www.make-my-own-house.com/back and front-yard-landscaping-ideas.html
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Comments
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it is a bad pictre.
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It seems better to create a full loop or partial loop feed with larger main feed or variant lines to prevent loss of PSI by reducing the size on lines as to feed requirement VS. valve affirmation ability. Certain large applications will require a secondary water supply to prevent household loss of pressure.
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It seems better to create a full loop or partial loop feed with larger lines to prevent loss of PSI.
