You'll need a pressure gauge, string and a pencil or pen, a 5 gallon bucket and a tape measure.
Record: Pounds per square inch (psi) on the worksheet.
Record: Write the meter size (5/8",3/4" or 1") on your worksheet.
Check with your pump owner’s manual to determine its pressure and flow capacity. Or consult a well pump dealer/installer for this information.
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.
|Length of String||2 3/4"||3 1/4"||3 1/2"||4"||4 3/8"||5"|
|Size of Copper||3/4"||1"||1 1/4"|
|Size of Galvanized||3/4"||1"||1 1/4"|
|Size of Sch. 40 PVC||3/4"||1"||1 1/4"|
Record: Gallons per minute (GPM) on your worksheet.
Determine gallons per minute (GPM) with the following formula:
Important: retest if less than 7 GPM. Are the two test results different?
Tip: Use scratch paper first then transfer your final drawing to the graph paper. Use bold, black lines only, no shading.
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 in proper scale. If you have special watering preference such as bubblers in planting beds or a drip irrigation zone, note that on your drawing as well. Group similar types of plants such as shrubs and ground covers together in the sections. If you have big differences in the amount of sun different areas get, you may want to group those for watering efficiency and indicate “separate valve” on your drawing.