Irrigation Professionals with questions about ... - Hunter Industries

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Square Spacing PatternsIn a square spacing pattern the sprinklers in a row are the same distanceapart as the rows of sprinklers. It is sometimes considered that squarespacing provides less uniform coverage than equilateral triangle spacing.However, in many small landscape areas it provides the best protectionagainst overspray, and therefore is the preferred spacing pattern.Figure 26Triangular Spacing PatternsIn a triangular spacing pattern, the heads are placed at the corners of anequilateral triangle as shown. With triangular head spacing, the uniformityof coverage will be slightly higher than <strong>with</strong> square spacing patterns.Figure 27
Triangular spacing is usually the preferred spacing pattern for largelandscape areas. The major drawback to triangular head spacing is thetendency for more overspray along the perimeter, therefore it is seldomused in residential or other small area systems.Square Spacing:Triangle Spacing:Figure 28In both the square and the triangular methods, a minimum of head-toheadspacing is recommended (Figure 29).Figure 29
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Irrigation Professionals with quest
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Plot PlansIntroductionOne of the mo
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Drawing ToolsThere are just a few t
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Measure the PropertyTake careful me
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Trees, water meters, and other item
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Step 2 - Redraw On Graph PaperThe n
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SymbolsIn order to distinguish betw
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Make sure the drawing is dated and
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Step 4 - Group Sprinklers Into Zone
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Basic HydraulicsIntroductionHydraul
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How Pressure is Created By the Weig
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Does the Shape or Size of the Conta
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L O W24 VAC 50-60 Hz60mA INRUSH60mA
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Factors Affecting Dynamic PressureW
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INSIDE DIAMETER (i.d.) of the pipe:
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LENGTH is the fourth factor affecti
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D) SDR -Standard Dimension Ratio -
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1. Look in the left column (FLOW G.
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SummaryThere is a limited amount of
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DefinitionsUse the diagram below al
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Calculating Dynamic Pressure at Des
Page 43 and 44: D. Estimate Pressure Available at
Page 45 and 46: Line #5 - Service Line: This is the
Page 47 and 48: Line #11 - Volume Through the Meter
Page 49 and 50: C. Calculate Dynamic Pressure at De
Page 51 and 52: Line #16 - Pressure Loss in the Wat
Page 53 and 54: Line #21 - Pressure Change Due to E
Page 55 and 56: Design ProblemMany times, you will
Page 57 and 58: III. Systems Supplied by a PumpCalc
Page 59 and 60: D. Estimate Pressure Available at
Page 61 and 62: Line #5 - Pressure at POC: If the P
Page 63 and 64: Sample Problem: 13.5 GPMC) Read acr
Page 65 and 66: D. Estimate Pressure Available at"W
Page 67 and 68: (METERED SYSTEMS)Design Capacity an
Page 75 and 76: (PUMP SYSTEMS)Design Capacity and W
Page 77 and 78: (PUMP SYSTEMS)Design Capacity and W
Page 79 and 80: Sprinkler SelectionIntroductionThe
Page 81 and 82: Spray HeadsFixed spray heads may be
Page 83 and 84: Selecting the Proper SprinklerNow t
Page 85 and 86: Precipitation RateExpressed in inch
Page 87 and 88: Sprinkler Watering PatternsMost spr
Page 89 and 90: Choosing Nozzles for Gear Driven Ro
Page 91 and 92: 5) Sprinkler Watering Patterns - Be
Page 93: HydrozonesA hydrozone is a portion
Page 97 and 98: and flow rate, the smaller the spri
Page 99 and 100: perpendicular (see Figure 33). Many
Page 101 and 102: “symmetrical” layout, and they
Page 103 and 104: Head spacing in narrow areas is det
Page 105 and 106: Head placement is complicated becau
Page 107 and 108: Figure 40PGJ
Page 109 and 110: On larger slopes, a combination of
Page 111 and 112: SummarySprinkler head placement is
Page 113 and 114: Backflow PreventionIntroductionBack
Page 115 and 116: System LayoutLaying out a system be
Page 117 and 118: Backflow Preventer LocationLocal pl
Page 119 and 120: time. Station run time can be tempo
Page 121 and 122: Pipe Sizing Using the Friction Loss
Page 123 and 124: Backflow Preventer and Valve Sizing
Page 125 and 126: Friction LossesIntroductionCalculat
Page 127 and 128: 5. Multiply your answer by the leng
Page 129 and 130: Friction Loss CalculationsZone Numb
Page 131 and 132: Sample Problem:1.67= 0.0167 psi los
Page 133 and 134: Step 2Step 3Step 4Step 5Step 6Sprin
Page 135 and 136: Using the acceptable 10% allowance:
Page 137 and 138: SummaryCalculating the friction los
Page 143 and 144: Precipitation RatesIntroductionToda
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Sprinkler Precipitation RatesVersus
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Area CoveredArc by Sprinkler Flow90
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The Sprinkler Spacing MethodThis me
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Use of Precipitation Rates in Lands
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Irrigation SchedulingIntroductionUl
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Crop coefficient. Different plants
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ET Evaporation of soil surface wate
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Soil Intake RateSoil texture will p
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What You Need to KnowAs previously
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