Netafim TECHLINE AS User Manual

T E C H L I N E A S ™ D E S I G N G U I D E
NETAFIM @BCL@C40BDC65.doc 21/12/2009 21
TECHLINE AS™ IN TURF (SDI):
 Refer to Table 1 for correct drip discharge, drip and dripperline spacing.
 Refer to Table 1 for correct Techline AS™ burial depth.
 Ensure that all dripperlines are installed at a uniform spacing and at an even depth.
Any variations may cause a variation in water application rates.
 Always use the GRID layout for SDI systems.
 Techline AS™ can be laid on top of a level surface and have topsoil applied to it at a
uniform depth.
 Techline AS™ can also be inserted into the ground with a plough. Again ensure that it
is installed at a uniform depth.
 Install a Techfilter to protect the system from root intrusion.
TECHLINE AS™ IN NEW SODDED TURF:
 Follow Table 1 General Guideline’s recommendations for turf.
 Bury the Techline AS™ to the depth specified in Table 1 ensuring that it is laid at an
even depth.
 In areas where mechanical aeration will be used, bury the Techline AS™ 150mm below
final grade and ensure that aeration does not exceed 100m in depth.
 When installing the sod:
o It is important that the final grade is smooth, ensuring that the sod makes solid
contact with the soil.
o Properly “knit” the edges together
o Roll the sod to ensure good contact.
 If the irrigation system is automatic:
o Set the zone to operate several times per day (check local water restrictions)
o Provide additional overhead irrigation until roots establish
 Once you can not pull the edges of the sod up, discontinue overhead watering.
 Irrigate on a daily or every-other-day basis (check local water restrictions)
NOTE: Temporary overhead irrigation may be required to irrigate sods/turf for the first 7-10 days
until root establishment occurs and SDI becomes effective.
TECHLINE AS™ ABOVE AND BELOW GRADE:
Techline AS™ is designed to be used in a variety of ways:
o It can be laid on the surface (it’s UV resistant) and held in place with Asta Hold Down
Stakes.
o It can be laid on the surface, staked into place and covered with mulch, or
o It can be buried below grade.
NOTE: When using Techline AS™ above grade with stakes, use enough stakes to firmly hold
the dripperline in place.

Netafim TECHLINE AS Specifications

General

Emitter Type	Pressure Compensating (PC)
Emitter Spacing	30, 45, 60 cm
Material	Polyethylene
Operating Pressure	0.55 - 3.5 bar
Pressure Compensating Range	0.55 - 3.5 bar
Anti-Siphon Mechanism	Yes
Clogging Resistance	High (self-flushing mechanism, labyrinth design)

Summary

INTRODUCTION AND OVERVIEW

Benefits of Low Volume Drip Irrigation

Highlights advantages of low volume drip irrigation for new plantings and water savings.

Techline AS™ Features and Benefits

Details Techline AS™ features like anti-siphon mechanism, self-flushing, and root barrier.

DESIGN CRITERIA AND PRODUCT SELECTION

Site Survey and Design Principles

Covers site survey requirements, plant grouping for hydro-zoning, and soil type identification.

Choosing the Right Techline AS™ Product

Guidance on selecting the appropriate Techline AS™ product based on garden or turf and soil type.

Layout Methods

Explains Grid and Lite layout methods for Techline AS™ installations and their common principles.

SYSTEM DESIGN AND CALCULATIONS

Maximum Lateral Lengths and Centre Feed Layouts

Details maximum run lengths for laterals and benefits of centre feed grid layouts.

Mainline and Submain Sizing

Provides methods for calculating appropriate mainline and submain sizes based on flow rate and head loss.

Zone Water Requirement and Demand Calculations

Explains how to determine total zone flow and water demand using various methods.

Core Design Formulas

Presents essential formulas for calculating dripperline length, application rate, and number of drippers.

Irrigation Duration and Watering Regimes

Guides on calculating plant water requirements, soil infiltration, and final irrigation duration.

INSTALLATION AND MAINTENANCE

Installation Components

Details fittings, pipe stakes, filters, and pressure regulating valves required for installation.

Techline AS™ Installation Guide

Provides specifications for solenoid valves, filters, Techfilter, PRV, and dripperline installation.

System Maintenance and Inspection

Outlines routine system maintenance, flushing procedures, and inspection checklist requirements.