sprinkle agronomic design protected v bo

7/27/2019 Sprinkle Agronomic Design Protected v Bo

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SPRINKLE IRRIGATION - AGRONOMIC DESIGN

for pre-feasibility design

The spreadsheet template* is based in SCS Section 15 Chapter 11

Sprinkle Irrigation" by professor Jack Keller.http://www.wsi.nrcs.usda.gov/products/W2Q/water_mgt/Irrigation/irrig-handbooks.html

The data must be entered only in the "green" cells. The present page

provides general information which might be useful when no specific data

is available.

The order in which the data is introduced is irrelevant. Trial and error

approach can be used to test different alternatives.

The tables on this page are the following:

1.- Effective rooting depths

2.- Available water holding capacity WHC by texture

3.- Minimum and maximum values of ECe (mmhos/cm) for various crops

4.- Soil infiltration rates

5.- Sprinkler nozzle discharge coefficients

6.- Recommended nozzle sizes and pressure-heads7.- Recommended Sprinkler Spacing

8.- Wind effects

9.- Evapotranspiration - IWMI Web Site

* The template is based in the work of GIC Srl

October 2013

GANDARILLAS

The author does not warrant the spreadsheet templates to be

error free and cannot accept any responsibility for its use or

misuse! To be used only for pre-feasibility design
http://www.wsi.nrcs.usda.gov/products/W2Q/water_mgt/Irrigation/irrig-handbooks.htmlhttp://www.wsi.nrcs.usda.gov/products/W2Q/water_mgt/Irrigation/irrig-handbooks.html


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Table 1

EFFECTIVE ROOTING DEPTHS

(80% of the feeder roots)

Crop Root Depth Crop Root Depth (m) (m)

Alfalfa 1.20 - 1.80 Almonds 0.60 - 1.20

apple 0.75 - 1.20 Apricot 0.60 - 1.35

Artichoke 0.60 - 0.90 Asparragus 1.80

Avocado 0.60 - 0.90 Banana 0.30 - 0.60

Barley 0.90 - 1.05 Bean (dry) 0.45 - 0.60

Bean (green) 0.45 - 0.60 Bean (lima) 0.90 - 1.50

Beet (sugar) 0.45 - 0.75 Beet (table) 0.30 - 0.45

Berries 0.90 - 1.50 Broccoli 0.60

Brussel Sprout 0.60 Cabbage 0.60

Cantaloup 0.60 - 1.20 Carrot 0.45 - 0.60

Cauliflower 0.60 Celery 0.60

Chard 0.60 - 0.90 Cherry 0.75 - 1.20

Citrus 0.60 - 1.20 Coffee 0.90 - 1.50

Corn (grain) 0.60 - 0.90 Corn (sweet) 0.45 - 0.60

Cotton 0.60 - 1.80 Cucumber 0.45 - 0.60

Egg plant 0.75 Fig 0.90

Flax 0.60 - 0.90 Grapes 0.45 - 0.90

Lettuce 0.15 - 0.45 Lucerne 1.20 - 1.80"

Oats 0.60 - 0.75 Olives 0.60 - 1.20"

Onion 0.30 Parsnip 0.60 - 0.90"Passion fruit 0.30 - 0.45 Pasture (ann.) 0.30 - 0.75"

Pasture (peren.) 0.30 - 0.75 Pea 0.45 - 0.60"

Peach 0.60 - 1.20 Pear 0.60 - 1.20"

Pepper 0.60 - 0.90 Plum 0.75 - 1.20"

Potato (Irish) 0.60 - 0.90 Potato (sweet) 0.60 - 0.90"

Pumpkin 0.90 - 1.20 Radish 0.30"

Safflower 0.90 - 1.50 Sorghum (grain) 0.60 - 0.90"

Sorghum (sweet) 0.60 - 0.90 Sorghum (silage) 0.90 - 1.20"

Soybean 0.60 - 0.75 Spinach 0.45 - 0.60"

Squash 0.60 - 0.90 Strawberry 0.30 - 0.45"

Sugar cane 0.45 - 1.05 Sudan grass 0.90 - 1.20"

Tobacco 0.60 - 1.20 Tomato 0.60 - 1.20"

Turnip (white) 0.45 - 0.75 Walnuts 1.65 - 2.40"

Watermelon 0.60 - 0.90 Wheat 0.75 - 1.05"


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CROP CROP

F ield crops Min Max F ield cropsBarley 8 28 Corn

Cotton 7.7 27 Flax

Sugarbeet 7 24 Broadbean

Wheat 6 20 Cowpea

Sorghum 4 18 Bean

Fruit and nut crops F ruit and nut crops

Date palm 4 32 Apricot

Fig, olive 2.7 14 Grape

Pomegranate 2.7 14 Almond

Grapefruit 1.8 8 Plum

Orange 1.7 8 Blackberry

Lemon 1.7 8 Boysenberry

Apple, pear 1.7 8 Avocado

Walnut 1.7 8 Raspberry

Peach 1.7 6.5 Strawberry

Vegetable crops Vegetable crops

Beets 4 15 Sweet corn

Broccoli 2.8 13.5 Sweet potato

Tomato 2.5 12.5 Pepper Cucumber 2.5 10 Lettuce

Cantaloupe 2.2 16 Radish

Spinach 2 15 Onion

Cabbage 1.8 12 Carrot

Potato 1.7 10 BeanNote:

ECe max eliminates yield

ECe min does not reduce yield

Table 3

Table 7-4 Minimum and maximum values of ECe (mmhos/cm) for various c

ECe


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Average

Min Max1.7 10 0.8 3.3 2.1

1.7 10 0.8 3.3 2.1

1.6 12 5.0 6.7 5.8

1.3 8.5 5.0 6.7 5.8

1 6.5 5.8 8.3 7.1

5.8 8.3 7.1

9.2 10.8 10.0

1.6 6 8.3 11.7 10.0

1.5 12 10.0 11.7 10.8

1.5 7 10.8 13.3 12.1

1.5 7 13.3 15.0 14.2

1.5 6 15.0 16.7 15.8

1.5 6 15.8 18.3 17.1

1.3 6 19.2 20.8 20.0

1 4 15.8 18.3 17.1

14.2 15.8 15.0

19.2 20.8 20.0

19.2 20.8 20.0

1.7 10 15.0 16.7 15.8

1.5 10.5 15.0 16.7 15.8

1.5 8.5 14.2 15.8 15.01.3 9

1.2 9

1.2 7.5

1 8

1 6.5

cm/m

Symbol Texture

CL Clay loam

SC Sandy clay

SICL Silty clay loam

SI Silt

SCL Sandy clay loam

VFS Very fine sand

LS Loamy sand

FSL Fine Sandy Loam

LFS Loamy fine sand

S Sand

FS Fine Sand

SIL Silt loam

C Clay

SIC Silty clay

VFSL Very fine sandy loam

L Loam

COS Coarse sand

SL Sandy loam

LVFS Loamy very fine sand

COSL Coarse sandy loam

LCOS Loamy coarse sand

Range

Table 2

AVAILABLE WATER HOLDING CAPACITY (WHC) BY TEXTURE

ECe

Table 2-1 SCS NEH Part 652 Chapter 2 ops


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Table 11-4 SCS Section 15. Chapter 11. Suggested maximum application rates for sprinklers for

Slope ->

Soil Texture and Profile mm/hr in/hr mm/hr in/hr mm/hr 50.80 2.00 38.10 1.50 25.40

38.10 1.50 25.40 1.00 19.05

25.40 1.00 20.32 0.80 15.24

19.05 0.75 12.70 0.50 10.16

12.70 0.50 10.16 0.40 7.62

7.62 0.30 6.35 0.25 3.81

3.81 0.15 2.54 0.10 2.03

Light sandy loams over more compact

soils

Table 4

Coarse sandy soil to 1.83 m (6 ft)

Coarse sandy soils over more compact

soils

Light sandy loams to 1.8 m (6ft)

0 to 5% 5 to 8% 8 to

Silt loams to 1.83 m (6 ft)

Silt loams over more compact soils

Heavy-textured clays or clay loams


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verage soil, slope and tilth

in/hr mm/hr in/hr 1.00 12.70 0.50

0.75 10.16 0.40 SI: q = discharge in m /hr & P = pressure-

ES: q = discharge in gpm & P = pressure-

0.60 10.16 0.40

Kd

0.40 7.62 0.30 mm in SI

2.38 3/32 0.069

0.30 5.08 0.20 2.78 7/64 0.094

3.18 1/8 0.123

0.15 2.54 0.10 3.57 9/64 0.155

3.97 5/32 0.190

0.08 1.52 0.06 4.37 11/64 0.230

4.76 3/16 0.274

5.16 13/64 0.323

5.56 7/32 0.377

* SCS Section 15 Chapter 11. Table 11-1

P Kd q

m m3/hr 20 0.155 0.693

P Kd q

m m3/hr

34.80 0.139 0.82

P Kd q

m m3/hr

31.10 0.191 1.063

Kd

0.125

12%

3.20

Nozzle Diameter

Equivalent Nozzle Dia (mm

Discharge Calculator

Pressure Calculator

12 to 16%

Table 5

Nozzle Diameter (mm)

Nozzle discharge coefficient, K

Discharge coefficient, Kd

Approx. Discharge coefficient, Kd

PKq d


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P Kd q

m m3/hr

35.00 0.139 0.82

P Nozzle Dia Wetted Dm mm m

35.00 3.38 25.41

Approx. Wetted Diameter


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in

1.98 to 2.38 5/64 to 3/32 14.1 to 31.6 20 to 452.78 to 3.57 7/64 to 9/64 17.6 to 35.2 25 to 50

3.97 to 4.37 5/32 to 7/32 21.1 to 38.7 30 to 55

ead in m. 4.76 to 5.56 3/16 to 7/32 24.6 to 42.2 35 to 60

ead in ft * SCS Section 15 Chapter 11.

Kd

ES

0.255

0.346

0.453

0.575

0.704

0.849

1.012

1.193

1.394

mm

Pressure

meters psi

d*

Table 6. Nozzle sizes and pressure-heads

Nozzle sizes

y = 0.0R =

0.000

0.050

0.100

0.150

0.200

0.250

0.300

0.350

0.400

2.00 2.50 3.00 3.50 4.00 4.50 5.00

Kd

Nozzle Dia (mm)

Sprinkle Discharge Coefficient, Kd


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Nozzle Dia

mm

3.38


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Christiansensgeometrical sprinkle profile and optimum spacing

from SCS Section 15 Chapter 11 figure 11-23).

Table 7. Recommended S

122x1.99750.9999

5.50 6.00


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8.- Wind Effects:

0 - 4.8 Km/hr (0-3 mph) wind

6.4 - 11.3 Km/hr (4-7 mph) w

12.9+ Km/hr (8+ mph) wind,

9.- Evapotranspiration

IWMI Web Site:http://wcatlas.iwmi.org/

http://www.iwmi.cgiar.org/resource

s a percentage of effective wetted diameters (taken

The spacing between the sprin

Recommended maximum dimespray pattern diameter, adjuste

The spray patterns from sp

wind is fairly constant. This re

be minimized by either reduci

angle nozzles in combination

will worsen sprinkler perform

and commonly used sprinkler

rinkler Spacing
http://wcatlas.iwmi.org/http://www.iwmi.cgiar.org/resources/world-water-and-climate-atlas/http://www.iwmi.cgiar.org/resources/world-water-and-climate-atlas/http://wcatlas.iwmi.org/


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, S and R = Pattern Dia x .60

nd, S and R = Pattern Dia x .55

S and R = Pattern Dia x .50

s/world-water-and-climate-atlas/

lers (S) are equal to the row (R) spacing.

nsions of S & R expressed as percentages of thefor wind are:

inklers are usually badly distorted in areas where

ults in uneven water distribution. This problem can

g the spacing between the sprinklers, or using low

ith reduced spacing. Excessive sprinkler pressure

ance in a windy condition. Two generally accepted

spacing patterns are square spacing and triangular

spacing.


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I PROJECT:

II LAND AND WATER RESOURCES

a) Field number

b) Area A 0.5 ha 1.

c) Average annual/seasonal effective precipitation Pe mm 0.

d) Residual water stored in the soil Ws mm 0.

e) Water supply lps 0.

f) Water storage m3 0.

g) Water quality Ecw 1.0 mmhos/cm 1

h) Water quality classification

III SOIL AND CROP

a) Soil texture

b) Soil stratification

c) Available water holding capacity = FC - W P WHC 17 cm/m 2.

d) Soil depth D 0.6 m 1.

e) Soil limitations

f) Management-allowed deficiency Mad 50 % 5

g) Crop

h) Potential plant root depth Zd 0.7 m 2.

i) Plant root depth RZD 0.6 m 1.

j) Soil basic infiltration rate Ib 12 mm/hr 0.

k) Average ETc peak month ETc 5.0 mm/d 0.

l) Seasonal total consumptive use ETs mm 0.

m) Crop maximum salinity tolerance max ECe 8 mmhos/cm

n) Crop minimum salinity tolerance min ECe 2 mmhos/cm

o) Leaching requirement ratio LRt 0.06 0.IV SPRINKLE HEAD & NOZZLE

a) Type

b) Wind speed 10 Km/h 6

c) Nozzle size 3.97 mm 0.

1

d) Theoretical Nozzle discharge coefficient, Kd 0.192 0.7

e) Design Nozzle discharge coefficient, Kd 0.191 0.7

f) Nozzle Pressure head h 31.10 m 44

3.11 Bar 102

g) Nozzle water application discharge @ h q 1.07 m3/h 37

0.30 lps 4.

h) Nozzle discharge exponent, x 0.50 0.

i) Approximate ground wetted diameter Dw 27.0 m 88

j) Sprinkle spacing Sp 13 m 42k) Laterals spacing Sr 14.2 m 46

l) Expected Coefficient of Uniformity, CU 80 % 8

m) Nozzle water application rate I 5.77 mm/hr 0.

n) Nozzle coarseness index, CI 13.73 13

V SYSTEM CAPACITY

a) Effective portion of water applied, Re 0.96 0.

b) Expected application Efficiency, Eh 76.6 % 76

c) Maximum allowable irrigation interval fx 10 day 1

d) Design irrigation interval fa 3 day

e) Estimated application time T 3.6 hr/set 3

f) Designed application time Ta 3.6 hr/set 3

g) Number of sets per day N 4 Sets 4

h) Area per set per day a 0.13 ha 0.

i) Number of sprinkler heads per set Ns 6.77 headsj) Maximum net depth of application Ix 51.0 mm 2.

k) Net depth of application In 15.0 mm 0.

l) Gross water application Ig 20.9 mm 0.

m) Water application rate 5 80 mm/hr 0

AGRONOMIC DESIGN OF SPRINKLE IRRIGATION SYSTEMS

UNITS SYSTE

buena

franco

ALTERNATIVE N

METRIC


21/47

Type of Low pressure Moderate Intermediate High pressure

sprinkler pressure pressure

3.5 to 10.6 m 10.6 to 21 m 21 to 42 m 35 to 70 m

5-15 psi 15-30 psi 30-60 psi 50-100 psiGeneral character- Special thrust Usually, single- Either single or Either single or

istics springs or reac- nozzle oscillat- dual nozzle de- dual-nozzle de-

tion-type arms. ing or long-arm sign. sign.

dual-nozzle de-

sign.

Recommended 10 mm/hr 6.4 mm/hr 6.4 mm/hr 12.7 mm/hr

minimum appli- 0.40 inch per hour 0.25 inch per hour 0.25 inch per hour 0.50 inch per hour

cation rate

Jet characteristics Waterdrops are Waterdrops are Waterdrops are Waterdrops are

(assuming proper large due to low fairly well broken well broken over well broken over pressure-nozzle pressure entire wetted di- entire wetted di-

size relations) ameter ameter

Moisture distributi- Fair Fair to good at up- Very good Good except where

on pattern (assum- per limits of wind velocities

ing proper spacing pressure range exceed 4 miles

and pressure-noz- per hour

zle size relations)

Adaptations and Small acreages. Primarily for un- For all field crops Same as for inter-

limitations Confined to soils der-trees sprink- and most irrigable mediate presure

with intake rates ling in orchards. soils. Well adapt- sprinklers except

exceeding 12.7 mm/h Can be used for ed to over-tree where wind is

(0.5 inch per hour) anfield crops and ve- sprinkling in orch- excessive

to good ground getables ards and groves

cover on medium and to tobacco

to coarse-textured shades

soils

SCS Section 15. Chapter 11. Table 11-5. - Classification of s


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Hydraulic Under-tree Perforated pipe

or giant long-angle

56 to 84 m 7 to 35 m 2.8 to 14 m

80-120 psi 10-50 psi 4-20 psiOne large nozzle Design to keep Portable irrigation pipe

with smaller stream trajectories with lines of small

supplemental below fruit and perforations in upper

nozzles to fill in foliage by lowering third of pipe perimeter

pattern gaps. the nozzle angle.

Small nozzle ro-

tates the sprinkler.

16.5 mm/hr 8.4 mm/hr 12.7 mm/hr

0.65 inch per hour 0.33 inch per hour 0.50 inch per hour

Waterdrops are Waterdrops are Waterdrops are large

extremely well fairly well broken due to low pressurebroken

Acceptable in calm Fairly good. Dia- Good rectangular

air. Severely disto- mond pattern pattern

rted by wind recommended

where laterals are

spaced more than

one tree interspace

Adaptable to close- For all orchards or For low-growing crops

growing crops that citrus groves. In only. Unsuitable for

provide a good orchards where tall crops. Limited to

ground cover. For wind will distort soils with relatively

rapid coverage and over-tree springkler high intake rates. Best

for odd-shaped patterns. In orch- adapted to small acrea-

areas. Limited to ards where avail- ges of high value crops.

soils with high in- able pressure is not Low operating pressure

take rates. sufficient for opera- permits use of gravity

tion of over-tree or municipal supply.

sprinklers

prinklers and their adaptability


23/47

SCS Section 15. Chapter 11 Table 11-9.-A guide to recommended nozzle sizes and pressures w

Appl. Rate 2.54 mm/hr 0.10 iph 3.81 mm/hr 0.15 iph 5.08 mm/hr 0.20

9.1 12.2 30 40 Nozzle Size 2.38 mm 3/32 in 2.38 mm 3/32 in 2.78 mm 7/64

Pressure 21.10 m 30 psi 35.17 m 50 psi 31.65 m 45

2.11 Bar 69.23 ft 3.52 Bar 115.38 ft 3.17 Bar 103.85

Discharge 0.28 m3/h 10.0 ft3/h 0.42 m3/h 15.0 ft3/h 0.57 m3/h 20.0

0.08 lps 1.25 gpm 0.12 lps 1.87 gpm 0.16 lps 2.50

C.U. 82 % 82 % 83 % 83 % 82 % 82




2.81 Bar 92.31 ft 2.81 Bar 92.31 ft 3.17 Bar 103.85



C.U. 83 % 83 % 88 % 88 % 86 % 86

Appl. Rate 3.81 mm/hr 0.15 iph 5.08 mm/hr 0.20

9.1 18.3 30 60 Nozzle Size 3.18 mm 1/8 in 3.57 mm 9/64

Pressure 28.14 m 40 psi 31.65 m 45

2.81 Bar 92.31 ft 3.17 Bar 103.85

Discharge 0.64 m3/h 22.5 ft3/h 0.85 m3/h 30.0

0.18 lps 2.81 gpm 0.24 lps 3.75

C.U. 88 % 88 % 88 % 88




2.11 Bar 69.23 f t 2.46 Bar 80.77 ft 2.46 Bar 80.77



C.U. 78 % 78 % 82 % 82 % 86 % 86

Appl. Rate 5.08 mm/hr 0.2012.2 15.2 40 50 Nozzle Size 3.97 mm 5/32

Pressure 24.62 m 35

2.46 Bar 80.77

Discharge 0.94 m3/h 33.3

0.26 lps 4.16

C.U. 78 % 78

Appl. Rate 5.08 mm/hr 0.20

12.2 18.3 40 60 Nozzle Size 3.97 mm 5/32

Pressure 35.17 m 50

3.52 Bar 115.38


0.31 lps 4.99

C.U. 83 % 83

Appl. Rate 5.08 mm/hr 0.20

18.3 18.3 60 60 Nozzle Size 4.76 mm 3/16Pressure 42.20 m 60

4.22 Bar 138.46


0.47 lps 7.49

C.U. 88 % 88

SI (m) ES (ft)

Nozzle sizes, pressures, discharges, application raThe applicatio

SI (m) ES (ft)

SI (m) ES (ft)

SI (m) ES (ft)

SI (m)

ES SI

ES (ft)

ES SI ES

ES (ft)

SI

SI (m) ES (ft)

Spacing

SI (m)


24/47

SCS Section 15. Chapter 11 Table 11-10.-A guide to recommend

Appl. Rate 2.54 mm/hr 0.10 iph 3.81 mm/hr 0.15 iph

9.1 12.2 30 40 Nozzle Size 2.38 mm 3/32 in 2.38 mm 3/32 inPressure 21.10 m 30 psi 35.17 m 50 psi

2.11 Bar 69.23 ft 3.52 Bar 115.38 ft

Discharge 0.28 m3/h 10.0 ft3/h 0.42 m3/h 15.0 ft3/h

0.08 lps 1.25 gpm 0.12 lps 1.87 gpm

C.U. 82 % 82 % 85 % 85 %


9.1 15.2 30 50 Nozzle Size 2.38 mm 3/32 in 2.78 mm 7/64 in

Pressure 28.14 m 40 psi 28.14 m 40 psi

2.81 Bar 92.31 ft 2.81 Bar 92.31 ft


0.10 lps 1.56 gpm 0.15 lps 2.34 gpm

C.U. 70 % 70 % 75 % 75 %Appl. Rate 3.81 mm/hr 0.15 iph

9.1 18.3 30 60 Nozzle Size 3.18 mm 1/8 in

Pressure 28.14 m 40 psi

2.81 Bar 92.31 ft

Discharge 0.64 m3/h 22.5 ft3/h

0.18 lps 2.81 gpm

C.U. 80 % 80 %


12.2 12.2 40 40 Nozzle Size 2.78 mm 7/64 in 3.18 mm 1/8 in

Pressure 21.10 m 30 psi 24.62 m 35 psi

2.11 Bar 69.23 ft 2.46 Bar 80.77 ft

Discharge 0.38 m3/h 13.3 ft3/h 0.57 m3/h 20.0 ft3/h0.10 lps 1.66 gpm 0.16 lps 2.50 gpm

C.U. 80 % 80 % 83 % 83 %

Appl. Rate

12.2 15.2 40 50 Nozzle Size

Pressure

Discharge

C.U.

Appl. Rate

12.2 18.3 40 60 Nozzle Size

Pressure

Discharge

C.U.

Appl. Rate

18.3 18.3 60 60 Nozzle Size

Pressure

SI (m) ES (ft)

SI (m) ES (ft)

SI (m) ES (ft)

SI (m) ES (ft)

SI (m) ES (ft)

SI (m) ES (ft)

SI (m) ES (ft)

Nozzle sizes, pressures, discharges,

Spacing SI ES SI ES


25/47

Discharge

C.U.

Table 11-10.-A guide to recommended nozzle sizes and pressures with expected

under moderate wind conditions (4-10 mph)


26/47

d nozzle sizes and pressures with expected average CU values for different application rates and sprinkler spaci

5.08 mm/hr 0.20 iph 6.35 mm/hr 0.25 iph 7.62 mm/hr 0.30 iph

2.78 mm 7/64 in 3.18 mm 1/8 in 3.57 mm 9/64 in31.65 m 45 psi 31.65 m 45 psi 31.65 m 45 psi

3.17 Bar 103.85 ft 3.17 Bar 103.85 ft 3.17 Bar 103.85 ft

0.57 m3/h 20.0 ft3/h 0.71 m3/h 25.0 ft3/h 0.85 m3/h 30.0 ft3/h

0.16 lps 2.50 gpm 0.20 lps 3.12 gpm 0.24 lps 3.75 gpm

85 % 85 % 82 % 82 % 83 % 83 %


3.18 mm 1/8 in 3.57 mm 9/64 in 3.97 mm 5/32 in

31.65 m 45 psi 35.17 m 50 psi 31.65 m 45 psi




84 % 84 % 84 % 84 % 84 % 84 %5.08 mm/hr 0.20 iph 6.35 mm/hr 0.25 iph 7.62 mm/hr 0.30 iph

3.57 mm 9/64 in 3.97 mm 5/32 in 4.37 mm 11/64 in

31.65 m 45 psi 31.65 m 45 psi 31.65 m 45 psi




84 % 84 % 84 % 84 % 84 % 84 %


3.57 mm 9/64 in 3.18 x 2.38 mm 1/8 x 3/32 in 3.97 x 2.38 mm 5/32 x 3/32 in

24.62 m 35 psi 28.14 m 40 psi 24.62 m 35 psi


0.76 m3/h 26.7 ft3/h 0.94 m3/h 33.3 ft3/h 1.13 m3/h 40.0 ft3/h0.21 lps 3.33 gpm 0.26 lps 4.16 gpm 0.31 lps 4.99 gpm

83 % 83 % 83 % 83 % 84 % 84 %


3.97 mm 5/32 in 3.97 x 2.38 mm 5/32 x 3/32 in 3.97 x 2.38 mm 5/32 x 3/32 in

24.62 m 35 psi 24.62 m 35 psi 31.65 m 45 psi




76 % 76 % 76 % 76 % 76 % 76 %


3.97 mm 5/32 in 4.37 mm 11/64 in 4.76 mm 3/16 in

35.17 m 50 psi 35.17 m 50 psi 35.17 m 50 psi3.52 Bar 115.38 ft 3.52 Bar 115.38 ft 3.52 Bar 115.38 ft



77 % 77 % 81 % 81 % 83 % 83 %


4.76 mm 3/16 in 5.16 mm 13/64 in 5.56 mm 7/32 in

42.20 m 60 psi 45.72 m 65 psi 45.72 m 65 psi

SI ESSI ES

application rates and coefficient of uniformity under MODERATE WINThe application rates have an error of +/- 0.50 mm/hr

SI ES


27/47




80 % 80 % 82 % 82 % 83 % 83 %

average CU values for different application rates and sprinkler spacings under moderate wind conditions (4-10 m


28/47

gs under moderate wind conditions (4-10 mph)

8.89 mm/hr 0.35 iph 10.16 mm/hr 0.4 iph

3.97 mm 5/32 in 3.57 x 2.38 mm 9/64 x 3/32 in28.14 m 40 psi 28.14 m 40 psi

2.81 Bar 92.31 ft 2.81 Bar 92.31 ft

0.99 m3/h 35.0 ft3/h 1.13 m3/h 40.0 ft3/h

0.28 lps 4.37 gpm 0.31 lps 4.99 gpm

84 % 84 % 85 % 85 %

8.89 mm/hr 0.35 iph 10.16 mm/hr 0.4 iph

4.37 mm 11/64 in 4.37 mm 11/64 in

31.65 m 45 psi 35.17 m 50 psi

3.17 Bar 103.85 ft 3.52 Bar 115.38 ft

1.24 m3/h 43.8 ft3/h 1.42 m3/h 50.0 ft3/h

0.34 lps 5.46 gpm 0.39 lps 6.24 gpm

87 % 87 % 85 % 85 %8.89 mm/hr 0.35 iph 10.16 mm/hr 0.4 iph

4.76 mm 3/16 in 4.76 mm 3/16 in

31.65 m 45 psi 35.17 m 50 psi

3.17 Bar 103.85 ft 3.52 Bar 115.38 ft

1.49 m3/h 52.5 ft3/h 1.70 m3/h 60.0 ft3/h

0.41 lps 6.56 gpm 0.47 lps 7.49 gpm

85 % 85 % 86 % 86 %

8.89 mm/hr 0.35 iph 10.16 mm/hr 0.4 iph

3.97 x 2.38 mm 5/32 x 3/32 in 3.97 x 3.18 mm 5/32 x 1/8 in

28.14 m 40 psi 24.62 m 35 psi

2.81 Bar 92.31 ft 2.46 Bar 80.77 ft

1.32 m3/h 46.7 ft3/h 1.51 m3/h 53.3 ft3/h0.37 lps 5.83 gpm 0.42 lps 6.66 gpm

87 % 87 % 86 % 86 %

8.89 mm/hr 0.35 iph 10.16 mm/hr 0.4 iph

4.37 x 2.38 mm 11/64 x 3/32 in 4.76 x 2.38 mm 3/16 x 3/32 in

28.14 m 40 psi 28.14 m 40 psi

2.81 Bar 92.31 ft 2.81 Bar 92.31 ft

1.65 m3/h 58.3 ft3/h 1.89 m3/h 66.7 ft3/h

0.46 lps 7.28 gpm 0.52 lps 8.32 gpm

83 % 83 % 84 % 84 %

8.89 mm/hr 0.35 iph 10.16 mm/hr 0.4 iph

5.16 mm 13/64 in 5.56 mm 7/32 in

35.17 m 50 psi 35.17 m 50 psi3.52 Bar 115.38 ft 3.52 Bar 115.38 ft

1.98 m3/h 70.0 ft3/h 2.27 m3/h 80.0 ft3/h

0.55 lps 8.74 gpm 0.63 lps 9.99 gpm

84 % 84 % 85 % 85 %

8.89 mm/hr 0.35 iph 10.16 mm/hr 0.40 iph

5.56 mm 7/32 in 6.35 mm 1/4 in

56.27 m 80 psi 47.83 m 68 psi

SI ES

(6.4 to 16 kph)

SI ES


29/47

5.63 Bar 184.62 ft 4.78 Bar 156.92 ft

2.97 m3/h 105.0 ft3/h 3.40 m3/h 120.0 ft3/h

0.83 lps 13.11 gpm 0.94 lps 14.98 gpm

84 % 84 % 84 % 84 %

h)


30/47

SCS Section 15. Chapter 11 Table 11-11.--A guide to recommended


9.1 12.2 30 40 Nozzle Size 2.38 mm 3/32 in 2.38 mm 3/32 inPressure 21.10 m 30 psi 35.17 m 50 psi

2.11 Bar 69.23 ft 3.52 Bar 115.38 ft


0.08 lps 1.25 gpm 0.12 lps 1.87 gpm

C.U. 75 % 75 % 80 % 80 %

Appl. Rate 3.81 mm/hr 0.15 iph

9.1 15.2 30 50 Nozzle Size 2.78 mm 7/64 in


2.81 Bar 92.31 ft

Discharge 0.53 m3/h 18.8 ft3/h

0.15 lps 2.34 gpm

C.U. 70 % 70 %Appl. Rate

9.1 18.3 30 60 Nozzle Size

Pressure

Discharge

C.U.

Appl. Rate 3.81 mm/hr 0.15 iph

12.2 12.2 40 40 Nozzle Size 3.18 mm 1/8 in


2.46 Bar 80.77 ft

Discharge 0.57 m3/h 20.0 ft3/h0.16 lps 2.50 gpm

C.U. 80 % 80 %

Appl. Rate

12.2 15.2 40 50 Nozzle Size

Pressure

Discharge

C.U.

Appl. Rate

12.2 18.3 40 60 Nozzle Size

Pressure

Discharge

C.U.

Appl. Rate

18.3 18.3 60 60 Nozzle Size

Pressure

SI (m) ES (ft)

SI (m) ES (ft)

SI (m) ES (ft)

SI (m) ES (ft)

SI (m) ES (ft)

SI (m) ES (ft)

SI (m) ES (ft)

Nozzle sizes, pressures, discharges, appliT

Spacing SI ES SI ES


31/47

Discharge

C.U.


32/47

nozzle sizes and pressures with expected average CU values for different application rates and sprinkler spaci

5.08 mm/hr 0.20 iph 6.35 mm/hr 0.25 iph 7.62 mm/hr 0.30 iph 8.89

2.78 mm 7/64 in 3.18 mm 1/8 in 3.57 mm 9/64 in 3.9731.65 m 45 psi 31.65 m 45 psi 31.65 m 45 psi 28.14

3.17 Bar 103.85 ft 3.17 Bar 103.85 ft 3.17 Bar 103.85 ft 2.81

0.57 m3/h 20.0 ft3/h 0.71 m3/h 25.0 ft3/h 0.85 m3/h 30.0 ft3/h 0.99

0.16 lps 2.50 gpm 0.20 lps 3.12 gpm 0.24 lps 3.75 gpm 0.28

80 % 80 % 84 % 84 % 84 % 84 % 85


3.18 mm 1/8 in 3.57 mm 9/64 in 3.97 mm 5/32 in 4.37

31.65 m 45 psi 35.17 m 50 psi 31.65 m 45 psi 35.17




81 % 81 % 82 % 82 % 87 % 87 % 885.08 mm/hr 0.20 iph 6.35 mm/hr 0.25 iph 7.62 mm/hr 0.30 iph 8.89

3.57 mm 9/64 in 3.97 mm 5/32 in 4.37 mm 11/64 in 4.76

31.65 m 45 psi 31.65 m 45 psi 31.65 m 45 psi 31.65




72 % 72 % 75 % 75 % 81 % 81 % 84


3.57 mm 9/64 in 3.97 mm 5/32 in 4.37 mm 11/64 in 4.37

24.62 m 35 psi 24.62 m 35 psi 24.62 m 35 psi 35.17


0.76 m3/h 26.7 ft3/h 0.94 m3/h 33.3 ft3/h 1.13 m3/h 40.0 ft3/h 1.320.21 lps 3.33 gpm 0.26 lps 4.16 gpm 0.31 lps 4.99 gpm 0.37

82 % 82 % 81 % 81 % 80 % 80 % 86


3.97 mm 5/32 in 3.97 mm 5/32 in 4.37 mm 11/64 in 4.76

24.62 m 35 psi 35.17 m 50 psi 35.17 m 50 psi 35.17




77 % 77 % 78 % 78 % 80 % 80 % 80


3.97 mm 5/32 in 4.37 mm 11/64 in 4.76 mm 3/16 in 5.16

35.17 m 50 psi 35.17 m 50 psi 35.17 m 50 psi 35.173.52 Bar 115.38 ft 3.52 Bar 115.38 ft 3.52 Bar 115.38 ft 3.52



68 % 68 % 74 % 74 % 78 % 78 % 81


4.76 mm 3/16 in 5.16 mm 13/64 in 5.56 mm 7/32 in 5.56

42.20 m 60 psi 45.72 m 65 psi 45.72 m 65 psi 56.27

SISI ESSI ES

ation rates and coefficient of uniformity under HIGH WIND (16 to 24e application rates have an error of +/- 0.50 mm/hr

SI ES


33/47




64 % 64 % 66 % 66 % 68 % 68 % 80


34/47

gs under high wind conditions (10-15 mph)

mm/hr 0.35 iph 10.16 mm/hr 0.4 iph

mm 5/32 in 3.97 mm 5/32 inm 40 psi 31.65 m 45 psi

Bar 92.31 ft 3.17 Bar 103.85 ft

m3/h 35.0 ft3/h 1.13 m3/h 40.0 ft3/h

lps 4.37 gpm 0.31 lps 4.99 gpm

% 85 % 86 % 86 %


mm 11/64 in 4.37 mm 11/64 in

m 50 psi 38.69 m 55 psi

Bar 115.38 ft 3.87 Bar 126.92 ft

m3/h 43.8 ft3/h 1.42 m3/h 50.0 ft3/h


% 88 % 88 % 88 %mm/hr 0.35 iph 10.16 mm/hr 0.4 iph

mm 3/16 in 4.76 mm 3/16 in

m 45 psi 35.17 m 50 psi

Bar 103.85 ft 3.52 Bar 115.38 ft

m3/h 52.5 ft3/h 1.70 m3/h 60.0 ft3/h


% 84 % 86 % 86 %


mm 11/64 in 4.76 mm 3/16 in

m 50 psi 31.65 m 45 psi

Bar 115.38 ft 3.17 Bar 103.85 ft

m3/h 46.7 ft3/h 1.51 m3/h 53.3 ft3/hlps 5.83 gpm 0.42 lps 6.66 gpm

% 86 % 85 % 85 %


mm 3/16 in 5.16 mm 13/64 in

m 50 psi 35.17 m 50 psi

Bar 115.38 ft 3.52 Bar 115.38 ft

m3/h 58.3 ft3/h 1.89 m3/h 66.7 ft3/h


% 80 % 82 % 82 %


mm 13/64 in 5.56 mm 7/32 in

m 50 psi 35.17 m 50 psiBar 115.38 ft 3.52 Bar 115.38 ft

m3/h 70.0 ft3/h 2.27 m3/h 80.0 ft3/h


% 81 % 82 % 82 %


mm 7/32 in 6.35 mm 1/4 in

m 80 psi 47.83 m 68 psi

ES

ph)

SI ES


35/47

Bar 184.62 ft 4.78 Bar 156.92 ft

m3/h 105.0 ft3/h 3.40 m3/h 120.0 ft3/h

lps 13.11 gpm 0.94 lps 14.98 gpm

% 80 % 82 % 82 %


36/47

SCS Section 15. Chapter 11 Table 11-12-A guide to recommended

Appl. Rate 2.54 mm/hr 0.10 iph 3.81 mm/hr

9.1 12.2 30 40 Nozzle Size 2.38 mm 3/32 in 2.38 mmPressure 21.10 m 30 psi 35.17 m

2.11 Bar 69.23 ft 3.52 Bar

Discharge 0.28 m3/h 10.0 ft3/h 0.42 m3/h

0.08 lps 1.25 gpm 0.12 lps

C.U. 69 % 69 % 72 %

Appl. Rate

9.1 15.2 30 50 Nozzle Size

Pressure

Discharge

C.U.Appl. Rate

9.1 18.3 30 60 Nozzle Size

Pressure

Discharge

C.U.

Appl. Rate

12.2 12.2 40 40 Nozzle Size

Pressure

Discharge

C.U.

Appl. Rate

12.2 15.2 40 50 Nozzle Size

Pressure

Discharge

C.U.

Appl. Rate

12.2 18.3 40 60 Nozzle Size

Pressure

Discharge

C.U.

Appl. Rate

18.3 18.3 60 60 Nozzle Size

Pressure

ozz e s zes, pre

Spacing SI ES SI

SI (m) ES (ft)

SI (m) ES (ft)

SI (m) ES (ft)

SI (m) ES (ft)

SI (m) ES (ft)

SI (m) ES (ft)

SI (m) ES (ft)


37/47

Discharge

C.U.


38/47

ozzle sizes and pressures with expected average CU vaIues for different application rates and sprinkle

0.15 iph 5.08 mm/hr 0.20 iph 6.35 mm/hr 0.25

3/32 in 2.78 mm 7/64 in 3.18 mm 1/850 psi 31.65 m 45 psi 31.65 m 45

115.38 ft 3.17 Bar 103.85 ft 3.17 Bar 103.85

15.0 ft3/h 0.57 m3/h 20.0 ft3/h 0.71 m3/h 25.0

1.87 gpm 0.16 lps 2.50 gpm 0.20 lps 3.12

72 % 73 % 73 % 75 % 75

5.08 mm/hr 0.20 iph 6.35 mm/hr 0.25

3.18 mm 1/8 in 3.57 mm 9/64

31.65 m 45 psi 35.17 m 50

3.17 Bar 103.85 ft 3.52 Bar 115.38

0.71 m3/h 25.0 ft3/h 0.88 m3/h 31.3

0.20 lps 3.12 gpm 0.25 lps 3.90

74 % 74 % 77 % 775.08 mm/hr 0.20 iph 6.35 mm/hr 0.25

3.57 mm 9/64 in 3.97 mm 5/32

31.65 m 45 psi 31.65 m 45

3.17 Bar 103.85 ft 3.17 Bar 103.85

0.85 m3/h 30.0 ft3/h 1.06 m3/h 37.5

0.24 lps 3.75 gpm 0.29 lps 4.68

60 % 60 % 65 % 65

5.08 mm/hr 0.20 iph 6.35 mm/hr 0.25

3.57 mm 9/64 in 3.97 mm 5/32

24.62 m 35 psi 24.62 m 35

2.46 Bar 80.77 ft 2.46 Bar 80.77

0.76 m3/h 26.7 ft3/h 0.94 m3/h 33.30.21 lps 3.33 gpm 0.26 lps 4.16

70 % 70 % 72 % 72

5.08 mm/hr 0.20 iph 6.35 mm/hr 0.25

3.97 mm 5/32 in 3.97 mm 5/32

24.62 m 35 psi 35.17 m 50

2.46 Bar 80.77 ft 3.52 Bar 115.38

0.94 m3/h 33.3 ft3/h 1.18 m3/h 41.7

0.26 lps 4.16 gpm 0.33 lps 5.20

55 % 55 % 60 % 60

5.08 mm/hr 0.20 iph 6.35 mm/hr 0.25

3.97 mm 5/32 in 4.37 mm 11/64

35.17 m 50 psi 35.17 m 503.52 Bar 115.38 ft 3.52 Bar 115.38

1.13 m3/h 40.0 ft3/h 1.42 m3/h 50.0

0.31 lps 4.99 gpm 0.39 lps 6.24

64 % 64 % 70 % 70

sures, sc arges, app cat on rates an coe c ent o un orm ty uThe application rates have an error of +/- 0.50 mm/hr

ES SI ES SI E


39/47


40/47

r spacings under extreme wind conditions (15-20 mph)

iph 7.62 mm/hr 0.30 iph 8.89 mm/hr 0.35 iph

in 3.57 mm 9/64 in 3.97 mm 5/32 inpsi 31.65 m 45 psi 28.14 m 40 psi

ft 3.17 Bar 103.85 ft 2.81 Bar 92.31 ft

ft3/h 0.85 m3/h 30.0 ft3/h 0.99 m3/h 35.0 ft3/h

gpm 0.24 lps 3.75 gpm 0.28 lps 4.37 gpm

% 76 % 76 % 82 % 82 %


in 3.97 mm 5/32 in 4.37 mm 11/64 in

psi 31.65 m 45 psi 35.17 m 50 psi

ft 3.17 Bar 103.85 ft 3.52 Bar 115.38 ft

ft3/h 1.06 m3/h 37.5 ft3/h 1.24 m3/h 43.8 ft3/h


% 80 % 80 % 81 % 81 %iph 7.62 mm/hr 0.30 iph 8.89 mm/hr 0.35 iph

in 4.37 mm 11/64 in 4.76 mm 3/16 in

psi 31.65 m 45 psi 31.65 m 45 psi

ft 3.17 Bar 103.85 ft 3.17 Bar 103.85 ft

ft3/h 1.27 m3/h 45.0 ft3/h 1.49 m3/h 52.5 ft3/h


% 75 % 75 % 80 % 80 %


in 4.37 mm 11/64 in 4.37 mm 11/64 in

psi 24.62 m 35 psi 35.17 m 50 psi

ft 2.46 Bar 80.77 ft 3.52 Bar 115.38 ft

ft3/h 1.13 m3/h 40.0 ft3/h 1.32 m3/h 46.7 ft3/hgpm 0.31 lps 4.99 gpm 0.37 lps 5.83 gpm

% 76 % 76 % 81 % 81 %


in 4.37 mm 11/64 in 4.76 mm 3/16 in

psi 35.17 m 50 psi 35.17 m 50 psi

ft 3.52 Bar 115.38 ft 3.52 Bar 115.38 ft

ft3/h 1.42 m3/h 50.0 ft3/h 1.65 m3/h 58.3 ft3/h


% 70 % 70 % 75 % 75 %


in 4.76 mm 3/16 in 5.16 mm 13/64 in

psi 35.17 m 50 psi 35.17 m 50 psift 3.52 Bar 115.38 ft 3.52 Bar 115.38 ft

ft3/h 1.70 m3/h 60.0 ft3/h 1.98 m3/h 70.0 ft3/h


% 73 % 73 % 74 % 74 %

8.89 mm/hr 0.35 iph

5.56 mm 7/32 in

56.27 m 80 psi

er p )

S SI ES SI ES


41/47

5.63 Bar 184.62 ft

2.97 m3/h 105.0 ft3/h

0.83 lps 13.11 gpm

66 % 66 %


42/47

10.16 mm/hr 0.4 iph

3.97 mm 5/32 in31.65 m 45 psi

3.17 Bar 103.85 ft

1.13 m3/h 40.0 ft3/h

0.31 lps 4.99 gpm

85 % 85 %

10.16 mm/hr 0.4 iph

4.37 mm 11/64 in

38.69 m 55 psi

3.87 Bar 126.92 ft

1.42 m3/h 50.0 ft3/h

0.39 lps 6.24 gpm

84 % 84 %10.16 mm/hr 0.4 iph

4.76 mm 3/16 in

35.17 m 50 psi

3.52 Bar 115.38 ft

1.70 m3/h 60.0 ft3/h

0.47 lps 7.49 gpm

83 % 83 %

10.16 mm/hr 0.40 iph

4.76 mm 3/16 in

31.65 m 45 psi

3.17 Bar 103.85 ft

1.51 m3/h 53.3 ft3/h0.42 lps 6.66 gpm

84 % 84 %

10.16 mm/hr 0.4 iph

5.16 mm 13/64 in

35.17 m 50 psi

3.52 Bar 115.38 ft

1.89 m3/h 66.7 ft3/h

0.52 lps 8.32 gpm

77 % 77 %

10.16 mm/hr 0.4 iph

5.56 mm 7/32 in

35.17 m 50 psi3.52 Bar 115.38 ft

2.27 m3/h 80.0 ft3/h

0.63 lps 9.99 gpm

75 % 75 %

10.16 mm/hr 0.40 iph

6.35 mm 1/4 in

47.83 m 68 psi

SI ES


43/47

4.78 Bar 156.92 ft

3.40 m3/h 120.0 ft3/h

0.94 lps 14.98 gpm

75 % 75 %


44/47

2.38 mm 3/32 in 2.78 mm 7/64 in 3.18 mm 1/8 in 3.57 mm 9/64 in

m psi m ft m ft m ft m ft

14.07 20 19.2 63 22.3 73

17.58 25 19.5 64 22.9 75 23.2 76 24.1 79

21.10 30 19.8 65 23.2 76 23.5 77 24.4 80

24.62 35 20.1 66 23.5 77 23.8 78 24.7 81

28.14 40 20.4 67 23.8 78 24.1 79 25.0 82

31.65 45 20.7 68 24.1 79 24.4 80 25.3 83

35.17 50 21.0 69 24.4 80 24.7 81 25.6 84

38.69 55 21.3 70 24.5 80.5 25.0 82 25.9 85

42.20 60 21.6 71 24.7 81 25.3 83 26.2 86

45.72 65 25.6 84 26.5 87

49.24 70 25.6 84 26.8 88

1 The use of straightening vanes or special long discharge tubes increases the wetted diameter by ap

The numbers in blue are outside the recommended pressure boundaries

Pressure-Head

SCS Section 15 Chapter 11. TabIe ll-13.-Nozzle discharge and wetted diameters for typicaI l/2- and 3/4- inc

Nozzle size and

21

22

23

24

25

26

27

28

29

30

31

32

33

34

WettedDiameter(m)

Pressure - Wetted Diametfor different nozzle sizes Dw = 14.08 + 0.207 P + 2.3

2.38 mm

2.78 mm

3.18 mm

3.57 mm

3.97 mm

4.37 mm

4.76 mm

5.16 mm

5.56 mm


45/47

19

20

10 15 20 25 30

Pressure-Head (m)


46/47

3.97 mm 5/32 in 4.37 mm 11/64 in 4.76 mm 3/16 in 5.16 mm 13/64 in 5.56 mm 7/32 in

m ft m ft m ft m ft m ft

25.0 82

25.9 85 26.8 88 27.7 91 28.7 94 29.3 96

26.5 87 27.4 90 28.7 94 29.6 97 30.5 100

26.8 88 28.0 92 29.3 96 30.2 99 31.1 102

27.1 89 28.7 94 29.9 98 30.8 101 31.7 104

27.4 90 29.0 95 30.5 100 31.4 103 32.3 106

27.7 91 29.3 96 30.8 101 31.7 104 32.6 107

28.0 92 29.6 97 31.1 102 32.0 105 32.9 108

28.3 93 29.9 98 31.4 103 32.3 106 33.2 109

28.7 94 30.2 99 31.7 104 32.6 107 33.5 110

roximately 5%.

bearing impact sprinkIers with trajectory angIes between 22 and 23 and standard nozzIes without vanes1

etted diameters

r65 Ns - 0.377(P/Ns)


47/47

35 40 45 50

sprinkle agronomic design protected v bo

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