Today we’re going to show you how to install
a drip line irrigation system on a foundation planting. This is the most efficient way to
water a landscaped foundation area. A drip line irrigation system eliminates the typical
problems associated with sprinkler systems such as run-off, overspray, evaporation and
wind drift, all of which can damage your home. Let’s get started.
Before starting any kind of digging, be sure you know what’s underneath the areas to
be dug up. In most areas, calling 811 will get you to the right folks who can come out
and mark the location of utility lines on your property as shown in this clip. You can
also call the local utility to have them come out – be sure to call cable, water/sewer/
storm, gas phone and electric. Now that you know where to safely dig, you’re
going to need a few tools. For this particular installation we need the following:
100 foot Tape Measure Shovel
Pipe Cutter 100 of Dura flo CV tubing with .6 Gallon Per
Hour emitters and 12 inch spacing Tees, elbows and couplers. The amount will
vary for every installation. 2 end plugs. We recommend the Agrifim Smart-loc
end plugs. In Order to determine your flow rate and spacing
you need to take the following Steps: Firstly, you need to call your local location
services hotline to have utility lines marked. You want to ensure that you don’t disturb
these lines during installation Next, you will need to take a soil sample
from the installation area in order to figure out your soil type. The type of soil will
help determine the emitter flow rate. Click here for more information about determining
your soil type. Third, you have to measure the size of the
turf grass area to be watered. This will help you determine how much dripperline is required
for the job. Lastly, you have to examine the water supply.
This will help you figure out two things: your water flow rate in gallons per minute
and the pressure available for the installation. For more information on how to do this click
here. In this particular residence, the soil type
was determined to be clay loam, the size of the planting area was 150 square feet, and
the flow and pressure of the water source was 25 gallons per minute at 80 PSI.
The Drip line emitter flow rate, spacing and lateral spacing is determined based on your
soil type – This residence has Clay Loam soil so we will
use .6 Gallons Per Hour emitters spaced at 12 inches with a lateral spacing of 18 inches
To Determine the total feet of tubing necessary we will use this equation. Take the area of
your foundation planting and multiply it by 12 inches. Then you take that number and divide
it by the lateral spacing to get the total feet of tubing.
For this residence, the area of the foundation planting is 150 square feet and the lateral
spacing in inches is 18 inches which equals 100 total feet of tubing:
Next we need to calculate zone flow. Zone flow is used in conjunction with your water
source capability to help size your irrigation valve, drip filter and regulator. Total zone
flow equals the total feet of tubing times the flow per 100 feet, divided by 100.
Total Flow=Total feet of tubing X flow Per 100’
To figure out your flow per 100’, reference this chart. For this example, the flow is
based on .6 gallons per hour and 12 inch spacing which equals 1.0 Gallon per minute
The total zone flow for this particular residence is 100 feet multiplied by 1 gallon per minute,
divided by 100 feet which is 1 gallon per minute
Based on this residence’s available drip zone flow of 5 gallons per minute it was determined
it was possible to add this Dripperline. Use the coupler to connect to your supply
tubing. In this example we used the Agrifim Smart-Loc coupler. The Agrifim smart loc fittings
allow you to connect to any ½ inch tubing measuring 16-18mm diameter.
From the supply location, maneuver the Agrifim Dura flo CV throughout the planting area.
Make sure to cover both sides of each plant with the tubing so the plants receive even
watering. At the end of the tubing use the end plugs to cap off the lines. These fittings
also provide an easy way to flush your dripline system.
Flush the zone by opening the end plugs and turning the system on for 1-2 minutes until
clear water is flowing from the flush points. Turn the system off and re-install the end
plug caps. Your system is now ready to operate. Select your desired ground cover mulch and
place a 2-3 inch layer uniformly over the planting area.
So there you have it….a simple and easy way to add drip irrigation to a newly installed
landscape area. Drip irrigation can save you both time and money and also give you the
highest efficiency possible for your landscape irrigation. This particular installation shows
how effective drip line can be in watering an irregular shaped planting area. It’s
slow, targeted application of water virtually eliminates the typical problem of runoff and
can be made to work in all soil types. In addition, it applies water directly to the
plants roots resulting in the healthiest, best looking plants possible. For more information
on this and other Agrifim drip irrigation products, check out our other videos.
For more than 30 years, NDS, Inc. has been a leader in water management solutions for
the residential and commercial markets. For more information on our other drip irrigation
solutions and special offers, go to ndspro.com.