Divide Sprinklers Into Zones; Area Capacity Example - Hunter Sprinkler System Design Handbook

Hunter residential sprinkler system design handbook

Hide thumbs

Table Of Contents

Table of Contents

E. Divide Areas Into Zones

Unless you have a very small yard, you probably do not have

enough water capacity to irrigate the entire yard at once. Many

areas will require more water than the residence has available

(system design capacity).

Indicate Zones

You will need to section the yard into "zones." Dividing the area

into zones is an easy process. Beginning with area A:

1. Refer back to the working pressure entered on page 2.

This is the pressure you will need to use when determining

sprinkler spacing and l/min requirements listed in the

Sprinkler Performance Charts.

2. Write the individual sprinkler's l/min next to each sprinkler

head in the area. Use the Sprinkler Performance Charts on

the back cover.

3. Add up all of those numbers and divide the sum by the

total l/min (system design capacity) available.

4. If the total number of zones is not a whole number, round

the number up to establish how many zones there will be

(1.2 zones becomes 2 zones). This is the total number of

valves needed for the sprinklers in that area.

5. Now that you know how many zones the area will have,

divide up the sprinklers so that each zone in the area will

have approximately the same l/min. Do not place too

many heads on the same zone; stay within the system's

design capacity.

6. Draw and label the zone valves for this area, i.e. Zone 1,

Zone 2, etc.

7. Follow the above procedure to locate sprinklers and divide

all areas into zones.