Design Guide

Step 3: Note the site and environmental parameters.
■ Soil texture (clay, loam or sand): ____________ (DW3)
■ Plant material(s) (trees, shrubs, ground cover or turf):
____________ (DW4)
■ Direction and degree of slope: ______________% (DW5)
Step 4: Lay out the laterals.
■ Use Table 2.2 below to determine the type of dripline
product necessary to fit the irrigation needs of the site
(i.e., pressure-compensating or non-pressure-compensating;
microline or dripline).
Dripline product: _______________ (DW6)
Use non-pressure-compensating dripline in
applications with less than 20 PSI pressure
in flat areas.
■ Using the Spacing Guidelines Table below, determine the
maximum recommended spacing between drippers and
spacing between driplines based on plant material and
soil types.
Emitter spacing: ________ inches (DW7)
Maximum dripline lateral spacing: ________ inches (DW8)
_____________________________________________________________Landscape Dripline Design
■ Typical Design Procedures
NOTES:
11
Soil Type
Emitter
Spacing
Row
Spacing
Emitter
Flow
Burial
Depth*
Medium Sand
• Trees/Shrubs/Groundcover
• Turf*
12”
12”
18”
12”
1.0 GPH
1.0 GPH
4”
4”
Loam
• Trees/Shrubs/Groundcover
• Turf*
18”
12”
18”
18”
1.0 GPH
1.0 GPH
6”
4”
Clay
• Trees/Shrubs/Groundcover
• Turf*
18”
18”
24”
18”
0.5 GPH
0.5 GPH
6”
4”
* For Subsurface Only
TABLE 2.3
Dripline
Tubing
Dia.
Flow
Rate
Pressure
Comp.
Emitter
Spacing
ROOTGUARD®
Protected
Installation Type
Below-
Grade
At-Grade/
Mulched
Over
DL2000® 5⁄8”
0.5 &
1.0 GPH
Yes 12”, 18” Yes X X
Drip In® 5⁄8”
0.5 &
1.0 GPH
Yes 12”, 18” No X
Microline 1⁄4” 0.5 GPH No 6”, 12” Yes X X
Soakerline™ 1⁄4” 0.5 GPH No 6”, 12” No X
TABLE 2.2