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TECHLINE AS™

DESIGN GUIDE

A complete guide for the design of on-surface and sub-surface drip
irrigation systems using Techline AS™.

Summary of Contents for TECHLINE AS

Page 1: ...TECHLINE AS DESIGN GUIDE A complete guide for the design of on surface and sub surface drip irrigation systems using Techline AS...

Page 2: ...ns 12 Mainline Sizing 13 Submain Sizing 13 Zone Water Requirements 14 Techline AS Flow Charts 14 Fittings 15 Pipe Stakes 15 Line Flushing Valves 16 Automatic Line Flushing Valve 16 Manual Flushing Val...

Page 3: ...9 Formula 1 2 Application Rate 29 Formula 1 3 Number Of Drippers In A Zone 29 Formula 1 4 Flow Per Zone 30 Formula 1 5 Estimated Total Zone Flow 30 CALCULATING TECHLINE AS RUN TIMES 31 TECHLINE AS INS...

Page 4: ...l as Agriculture Green House Nursery Waste Water re use Mining and Forestry markets The Techline family of dripperline products has been used successfully in Landscape since 1987 The recent addition o...

Page 5: ...per and cause possible drip blockage or damage The Anti siphon mechanism closes off when a vacuum forms inside the dripperline preventing any suck back into the dripper or dripperline Anti siphon mech...

Page 6: ...or changing topography Ideal in windy areas no mist or over spray Ideal for both regular and odd shaped areas Discrete in high profile landscapes SPECIFICATIONS Low and high flow rates 1 6L H 3 0L H...

Page 7: ...site to be irrigated Identify all slopes on the plan Identify the type of soil light medium or heavy Determine the type of plants that are to be irrigated turf groundcover shrubs plants and trees etc...

Page 8: ...e rows should be evenly spaced from 0 4m to 0 5m apart 2 The corresponding application rates and time to apply are listed under the Lateral Spacing line With rows of 1 6L H Techline AS every 0 4m apar...

Page 9: ...ine AS are being supplied from both ends This interconnection of the piping network comprises the term GRID layout This evens out the flow helps ensure water is being delivered downstream of any break...

Page 10: ...recommendations of Table 1 The 50mm setback will help provide enough moisture to prevent heat damage to plant material generated by hard scapes such as concrete or asphalt Start rows about 100mm away...

Page 11: ...will need 200 kPa to operate properly If it is from 130m 143m long it will need 250kPa Note We will discuss how to regulate pressure on page 18 CENTRE FEED GRID LAYOUTS You can increase the length of...

Page 12: ...able 2 If the total number of branched lines is too great simply extend the feed manifold to supply water to the laterals Rule 2 When joining in laterals from the feed manifold check only the longest...

Page 13: ...with a total flow of 10L M 19mm LDPE can supply up to 18L M over a 20m run with a head loss of 1 5m 15kPa If the area is rectangular in shape the factor refer above chart for 10 outlets is 0 43 Multi...

Page 14: ...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 14 Method 3 Multiply System Application rate by Total Area...

Page 15: ...rd 13mm tees elbows joiners plugs in line valves and ratchet clamps can be used with Techline AS PIPE STAKES Stakes are used to hold Techline AS firmly in place especially where Techline AS will be bu...

Page 16: ...Line Flushing Valve can be installed in the middle of the collecting manifold however in sloping sites the flushing manifolds should be installed at the lowest end For LITE layouts the Automatic Line...

Page 17: ...ion Install Air Vacuum Relief Valve at the highest point in the drip system Install one Air Vacuum Relief Valve for every 40L M of zone flow Ensure that all of the rows of Dripperline can take advanta...

Page 18: ...disc filter and control valve Often all three components are installed in the same valve box and the distance from the PRV to the Techline AS is limited so additional friction is not incurred To sele...

Page 19: ...are lower than normal a line break clogged filter dirty remote control valve clogged PRV or reduced line pressure are possible causes NOTE Always take the readings at the same time of day from the sam...

Page 20: ...S is installed perpendicular to across slopes This helps eliminate water drainage at the lower ends of the drip laterals On large slopes split the slope into two zones run the top 2 3 on one zone and...

Page 21: ...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 so...

Page 22: ...Techfilter downstream of the Filter and upstream of the PRV The Techfilter cartridge should be changed at least every two years to ensure that Trifluralin levels are maintained in the system Place a l...

Page 23: ...water at a slow and precise application rate from well below the soil surface The soil acts as a physical barrier preventing treated waste water from coming up to the surface and keeps it away from a...

Page 24: ...m In which Application Rate is mm per Hour of Water Being Applied Dripper Flow Rate Litres per Hour Flow of One Dripper Dripper Spacing Spacing in Metres of Drippers Inside Tubing Dripperline Row Spac...

Page 25: ...e with a discharge rate of 1 6L H 1 000 Drippers x 1 6L H 1 600L H 1 600L H 60 convert to L M 26 7L M Total Flow for this zone is 26 L M FORMULA 1 5 ESTIMATED TOTAL ZONE FLOW Application Rate of Syste...

Page 26: ...as Average Mean Daily Evaporation Rates for all major main land capital cities in Australia This data has been collected from the Bureau of Meteorology from observations made over 2006 to 2007 averagi...

Page 27: ...is calculated by dividing the Total Water Requirement TWR by the System Efficiency Ef GWR TWR Ef Step 6 Determine your drip systems Application Rate AR from the table below according to the drip disc...

Page 28: ...l water 3 times per day Medium Soil water 2 times per week Heavy Soil water 1 time per week Water restrictions will also determine the when watering takes place Check with your local water authority i...

Page 29: ...pulse irrigating Note If the sites soil was heavy pulsing would be required approx 6 x 15 minute cycles Divide the Duration of Irrigation 87 minutes by the number of days watering should can take pla...

Page 30: ...avel to a depth of 50mm in the bottom of the valve enclosure 3 0 Techfilter Tech filter is required wherever the dripperline is buried directly into the soil SDI and installed immediately downstream o...

Page 31: ...pe plough or trencher Alternatively it can be laid on a prepared surface prior to back filling of soil or mulch to the final grade Where trenchers are to be used ensure that the dripperline is install...

Page 32: ...Valves Locate Air vacuum release valves and if necessary clean out valve enclosure Remove Air vacuum release valve and ensure that the valve is functioning properly Replace valve and test 6 5 Flushing...

Page 33: ...ION CHECK LIST Project Name Date Dripper Spacing 0 3m 0 4m 0 5m Dripperline Spacing 0 3m 0 4m 0 5m Other m Dripper Flow Rate 1 6 LPH 3 0 LPH Application Rate mm hr Installation Type Under Mulch Sub su...

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