Decide where you will be installing large area sprinklers and where you will be installing small area sprinklers. Large area sprinklers should be 25' to 40' apart. Small area sprinklers should be 8' to 17' apart. This spacing will allow sprinklers to overlap their throw to assure even water distribution. Do not mix sprinkler types within one area.

Do not place sprinkler heads too far apart; stay within specifications listed on the Sprinkler Performance Charts which may be found in the Hunter Product Catalog. Spacing is determined by the size of the area the sprinkler is serving. Additionally, a sprinkler should be spaced so that it will spray both the head next to it and the head across from it. Working with one area at a time, start placing sprinkler heads:

Step 1. The critical points on a plan are the corners. Draw a quarter pattern sprinkler in each corner. Using a compass, draw an arc showing the sprinkler's watering pattern.

Step 2. If the quarter heads will not spray each other (head-to-head spacing), place heads along the perimeters. Draw these sprinkler's watering patterns.

Step 3. Now look to see if the perimeter heads will be spraying across the area to the heads on the other side. If they do not, add full circle heads in the middle. An easy way to locate these heads is to draw perpendicular grid lines from one perimeter head to another. Again, using the compass, draw an arc showing this sprinkler's watering pattern to make sure there is complete coverage.

Step 1 Corners are critical points. Start by placing sprinklers in each corner.	Step 2 Add sprinklers along the sides if necessary.
Step 3 Larger areas may require sprinklers in the middle, in addition to the sides, in order to provide head-tohead or overlapping coverage.	Total head-to-head coverage.
Curved Areas Convert curved areas to a series of straight lines; place sprinklers the same as you would in square or rectangular areas.	Adjustable arc nozzles on spray heads work very well in curved areas.

Check with local agencies: • To find out if a permit is required before installing a sprinkler system. • To determine where gas, telephone and other utility lines are buried. • To find out which type of backflow preventer is required in your area.

Courtesy of Hunter Industries Inc.