Subsurface Drip Irrigation Guide - Netafim USA

Subsurface Drip Irrigation Guide - Page 3

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WHERE DRIPPERLINE IS THE BEST CHOICE

The list of applications where dripperline is the best choice is long for two reasons. Netafim dripperline products do the best job of creating an even wetted pattern in the soil because they move the water through the soil, while sprinklers need to throw water to get it where it's going. As we have seen, throwing water through the air is the sprinkler's downfall.

Jump To: Long, Odd-shaped Or Narrow Areas Areas Close To Buildings And At-grade Windows Athletic Fields Auto Dealerships And Other Parking Areas Gardens, High Wind Or Constant Wind Areas Green Roofs High Liability Areas Vandal-prone & Public Properties Hardscapes Reduces Landscape Planting Budget Steep Slopes Locales Where The Cost Of Water Is Very High Recycled Reclaimed Water Or Fertigation Applications Where Spraying Water Is Illegal Water Window Issues Snow-belt Areas Using Salt On Streets And Sidewalks Other Areas

LONG, ODD-SHAPED OR NARROW AREAS:

"Border Zones" - Along sidewalks, streets, windows, fences, parking areas and walls
Curvilinear design layouts that cannot be properly watered with sprinklers
Eliminates the maintenance related to wet roads, sidewalks and other hardscapes
Helps save water
Reduces tripping hazards
Reduces wet surface slipping hazards to pedestrian and vehicle traffic
Irrigates areas with less water in long narrow areas where either getting the water is hard, or zoning the area is difficult
Allows for a smaller station-count controller, smaller point-of-connection and fewer valves
Eliminates overspray
Staining and bleaching of hardscapes and landscapes are eliminated

Figure 14 - Before and after pictures of Techline CV Dripperline installed on grass strips along light railway bed.

Figure 14a - Before picture of Techline CV Dripperline installed on grass strips along light railway bed

Figure 14b - After picture of Techline CV Dripperline installed on grass strips along light railway bed

Figure 15 - Examples of subsurface Techline Dripperline in narrow strips, medians and odd-shaped public areas.

AREAS CLOSE TO BUILDINGS AND AT-GRADE WINDOWS:

Stops windows and facades from getting wet or spotted with water

Reduces deterioration and discoloration of building facades

Figure 16 - Dripperline installations along buildings, at-grade windows and sidewalks.

ATHLETIC FIELDS:

Safety - no exposed sprinklers means no slipping or tripping injuries
No wet grass
On tight-soil fields:

Fields can be irrigated and softened prior to play without wetting the surface
Helps reduce impact injuries from hard soil surfaces

Reduces deterioration and discoloration of building facades
Because water window issues are eliminated, time of play increases
Soil conditions that remain consistently moist reduce the need for aeration
Fields that have low water pressure or supply can now be irrigated


Figure 17 - Formal Croquet Court.	Figure 18 - Professional Championship Tennis Court.

AUTO DEALERSHIPS AND OTHER PARKING AREAS:

Areas that have low water pressure or supply can now be irrigated. No overspray reduces the cost of auto detailing
Reduces slipping and tripping hazards

Reduces wet surface hazards to pedestrian and vehicle traffic
Allows for a small station-count controller and fewer valves because of many similar areas can be tied together

Figure 19 - Irrigating narrow strips at auto dealerships.

GARDENS:

Gets water to all areas
Plants sensitive to water on petals such as roses are protected

Water is applied directly to the root zone
Seasonal plant growth interference is eliminated

Figure 20 - Irrigating delicate flowers and roses without damaging plants.

Figure 21 - Plantings allowed to grow to maturity without sprinkler interference.

HIGH WIND, OR CONSTANT WIND AREAS:

Overspray and wasted water are eliminated
Water gets to where it is supposed to be

Uniform irrigation regardless of wind

GREEN ROOFS:

Either intensive or extensive
Can be used below grade in media less than an inch
Allows for a minimum level of soil and soil mixes (1" to 5")

Netafim dripperlines are not affected by the thin soil layer that can lead to a mat that is highly populated with roots
Reduces weeds which is a plus on "extensive" roofs that are not designed for public use

Figure 22 - Irrigating small, tight areas in planters where "soil-less" or minimal soils are used.

HIGH LIABILITY AREAS:

Tripping, slipping and other liability issues are significantly reduced

Maintenance costs to repair broken sprinkler heads are greatly reduced or eliminated

VANDAL-PRONE & PUBLIC PROPERTIES:

"Out of sight, out of mind"
Greatly reduces maintenance costs
Reduces potential liability caused by unrepaired problems

Eliminates phone calls in the middle of the night
Allows for a 24 hour-a-day water window

Figure 23 - All areas in these photos, including turf, odd-shaped areas, narrow grass strips between pavers and planters are irrigated with drip and dripperline.

HARDSCAPES:

Eliminates bleaching and staining of hardscapes, such as wooden fences maintaining the aesthetics of hardscapes

Excellent for grass strips between pavers on patios

REDUCES LANDSCAPE PLANTING BUDGET:

Drip and dripperline dramatically increase a plant's growth to maturity

Allows for more, less expensive container sized plants to be used with the same result as more larger, more expensive containers

STEEP SLOPES:

Allows turf or plantings to be used on slopes
Plant's speed of growth to maturity is significantly increased, meaning a reduced risk of slope damage early on

Water is more easily managed on slopes with dripperline
Wash outs and swales are virtually eliminated
Pocket walls

Figure 23 - Examples of pocket walls irrigated with Netafim Dripperline.

LOCALES WHERE THE COST OF WATER IS VERY HIGH:

Unlike overhead irrigation, which does not have an even application rate across its pattern, products like Netafim Techline CV and Techline Dripperline:

Have an extremely well-balanced application rate in the entire area
Eliminate over-watering ensuring the driest area receives enough water
Uses about half (frequently less than half) of the water of an overhead system

90% + efficient vs. overhead irrigation, which is about 60% efficient
Techline CV seals in 1.3 gallons of water for every 100 feet, saving water from draining out of the dripperline when the zone shuts off

RECYCLED/RECLAIMED WATER OR FERTIGATION APPLICATIONS WHERE SPRAYING WATER IS ILLEGAL:

Allows for use of nutrient-rich water, often at a greatly reduced cost
Conserves precious potable water supplies

Great solution for when no human contact with recycled/reclaimed water is required by health codes

Note: When working with on-site wastewater drip dispersal, federal, state and local regulations will typically require the use of Netafim Bioline. Please contact Netafim's Wastewater Division for more information.

WATER WINDOW ISSUES:

Irrigate whenever it is necessary because the system will not interfere with any activities being conducted.

SNOW-BELT AREAS USING SALT ON STREETS AND SIDEWALKS:

Dripperline can help leach salts from the soil in early spring
Approximately 50% of the salts can be removed when the water gets 12" into the soil

Approximately 90% of the salts can be removed when the water gets 24" inches into the soil

OTHER AREAS:

Areas with extensive large tree roots
Fertigation systems

Green building projects
Highly regulated water use areas

Subsurface Drip Irrigation Guide - Page 3

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