Prepare for the Project
While sprinkler systems are 70- to 80-percent efficient, drip irrigation can be 90 percent or higher. Half-inch tubing can be 16mm or 18mm and the parts are NOT interchangeable, so make sure you know which 1/2" tubing and parts you’re using when you start a project.Before you dig, call 811. The Common Ground Alliance has set up a national public service number, 811, connecting you with your local utilities marking organization. Make the call two days before starting an outdoor project.