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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.html7/27/2019 Sprinkle Agronomic Design Protected v Bo
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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/7/27/2019 Sprinkle Agronomic Design Protected v Bo
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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
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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
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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
Appl. Rate 2.54 mm/hr 0.10 iph 3.81 mm/hr 0.15 iph 5.08 mm/hr 0.20
9.1 15.2 30 50 Nozzle Size 2.38 mm 3/32 in 2.78 mm 7/64 in 3.18 mm 1/8
Pressure 28.14 m 40 psi 28.14 m 40 psi 31.65 m 45
2.81 Bar 92.31 ft 2.81 Bar 92.31 ft 3.17 Bar 103.85
Discharge 0.35 m3/h 12.5 ft3/h 0.53 m3/h 18.8 ft3/h 0.71 m3/h 25.0
0.10 lps 1.56 gpm 0.15 lps 2.34 gpm 0.20 lps 3.12
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
Appl. Rate 2.54 mm/hr 0.10 iph 3.81 mm/hr 0.15 iph 5.08 mm/hr 0.20
12.2 12.2 40 40 Nozzle Size 2.78 mm 7/64 in 3.18 mm 1/8 in 3.57 mm 9/64
Pressure 21.10 m 30 psi 24.62 m 35 psi 24.62 m 35
2.11 Bar 69.23 f t 2.46 Bar 80.77 ft 2.46 Bar 80.77
Discharge 0.38 m3/h 13.3 ft3/h 0.57 m3/h 20.0 ft3/h 0.76 m3/h 26.7
0.10 lps 1.66 gpm 0.16 lps 2.50 gpm 0.21 lps 3.33
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
Discharge 1.13 m3/h 40.0
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
Discharge 1.70 m3/h 60.0
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)
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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 %
Appl. Rate 2.54 mm/hr 0.10 iph 3.81 mm/hr 0.15 iph
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
Discharge 0.35 m3/h 12.5 ft3/h 0.53 m3/h 18.8 ft3/h
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 %
Appl. Rate 2.54 mm/hr 0.10 iph 3.81 mm/hr 0.15 iph
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
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Discharge
C.U.
Table 11-10.-A guide to recommended nozzle sizes and pressures with expected
under moderate wind conditions (4-10 mph)
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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 %
5.08 mm/hr 0.20 iph 6.35 mm/hr 0.25 iph 7.62 mm/hr 0.30 iph
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
3.17 Bar 103.85 ft 3.52 Bar 115.38 ft 3.17 Bar 103.85 ft
0.71 m3/h 25.0 ft3/h 0.88 m3/h 31.3 ft3/h 1.06 m3/h 37.5 ft3/h
0.20 lps 3.12 gpm 0.25 lps 3.90 gpm 0.29 lps 4.68 gpm
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
3.17 Bar 103.85 ft 3.17 Bar 103.85 ft 3.17 Bar 103.85 ft
0.85 m3/h 30.0 ft3/h 1.06 m3/h 37.5 ft3/h 1.27 m3/h 45.0 ft3/h
0.24 lps 3.75 gpm 0.29 lps 4.68 gpm 0.35 lps 5.62 gpm
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 3.18 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
2.46 Bar 80.77 ft 2.81 Bar 92.31 ft 2.46 Bar 80.77 ft
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 %
5.08 mm/hr 0.20 iph 6.35 mm/hr 0.25 iph 7.62 mm/hr 0.30 iph
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
2.46 Bar 80.77 ft 2.46 Bar 80.77 ft 3.17 Bar 103.85 ft
0.94 m3/h 33.3 ft3/h 1.18 m3/h 41.7 ft3/h 1.42 m3/h 50.0 ft3/h
0.26 lps 4.16 gpm 0.33 lps 5.20 gpm 0.39 lps 6.24 gpm
76 % 76 % 76 % 76 % 76 % 76 %
5.08 mm/hr 0.20 iph 6.35 mm/hr 0.25 iph 7.62 mm/hr 0.30 iph
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
1.13 m3/h 40.0 ft3/h 1.42 m3/h 50.0 ft3/h 1.70 m3/h 60.0 ft3/h
0.31 lps 4.99 gpm 0.39 lps 6.24 gpm 0.47 lps 7.49 gpm
77 % 77 % 81 % 81 % 83 % 83 %
5.08 mm/hr 0.20 iph 6.35 mm/hr 0.25 iph 7.62 mm/hr 0.30 iph
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
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4.22 Bar 138.46 ft 4.57 Bar 150.00 ft 4.57 Bar 150.00 ft
1.70 m3/h 60.0 ft3/h 2.12 m3/h 75.0 ft3/h 2.55 m3/h 90.0 ft3/h
0.47 lps 7.49 gpm 0.59 lps 9.36 gpm 0.71 lps 11.24 gpm
80 % 80 % 82 % 82 % 83 % 83 %
average CU values for different application rates and sprinkler spacings under moderate wind conditions (4-10 m
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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
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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)
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SCS Section 15. Chapter 11 Table 11-11.--A guide to recommended
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. 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
Pressure 28.14 m 40 psi
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
Pressure 24.62 m 35 psi
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
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Discharge
C.U.
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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
5.08 mm/hr 0.20 iph 6.35 mm/hr 0.25 iph 7.62 mm/hr 0.30 iph 8.89
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
3.17 Bar 103.85 ft 3.52 Bar 115.38 ft 3.17 Bar 103.85 ft 3.52
0.71 m3/h 25.0 ft3/h 0.88 m3/h 31.3 ft3/h 1.06 m3/h 37.5 ft3/h 1.24
0.20 lps 3.12 gpm 0.25 lps 3.90 gpm 0.29 lps 4.68 gpm 0.34
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
3.17 Bar 103.85 ft 3.17 Bar 103.85 ft 3.17 Bar 103.85 ft 3.17
0.85 m3/h 30.0 ft3/h 1.06 m3/h 37.5 ft3/h 1.27 m3/h 45.0 ft3/h 1.49
0.24 lps 3.75 gpm 0.29 lps 4.68 gpm 0.35 lps 5.62 gpm 0.41
72 % 72 % 75 % 75 % 81 % 81 % 84
5.08 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 4.37
24.62 m 35 psi 24.62 m 35 psi 24.62 m 35 psi 35.17
2.46 Bar 80.77 ft 2.46 Bar 80.77 ft 2.46 Bar 80.77 ft 3.52
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
5.08 mm/hr 0.20 iph 6.35 mm/hr 0.25 iph 7.62 mm/hr 0.30 iph 8.89
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
2.46 Bar 80.77 ft 3.52 Bar 115.38 ft 3.52 Bar 115.38 ft 3.52
0.94 m3/h 33.3 ft3/h 1.18 m3/h 41.7 ft3/h 1.42 m3/h 50.0 ft3/h 1.65
0.26 lps 4.16 gpm 0.33 lps 5.20 gpm 0.39 lps 6.24 gpm 0.46
77 % 77 % 78 % 78 % 80 % 80 % 80
5.08 mm/hr 0.20 iph 6.35 mm/hr 0.25 iph 7.62 mm/hr 0.30 iph 8.89
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
1.13 m3/h 40.0 ft3/h 1.42 m3/h 50.0 ft3/h 1.70 m3/h 60.0 ft3/h 1.98
0.31 lps 4.99 gpm 0.39 lps 6.24 gpm 0.47 lps 7.49 gpm 0.55
68 % 68 % 74 % 74 % 78 % 78 % 81
5.08 mm/hr 0.20 iph 6.35 mm/hr 0.25 iph 7.62 mm/hr 0.30 iph 8.89
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
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4.22 Bar 138.46 ft 4.57 Bar 150.00 ft 4.57 Bar 150.00 ft 5.63
1.70 m3/h 60.0 ft3/h 2.12 m3/h 75.0 ft3/h 2.55 m3/h 90.0 ft3/h 2.97
0.47 lps 7.49 gpm 0.59 lps 9.36 gpm 0.71 lps 11.24 gpm 0.83
64 % 64 % 66 % 66 % 68 % 68 % 80
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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/hr 0.35 iph 10.16 mm/hr 0.4 iph
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
lps 5.46 gpm 0.39 lps 6.24 gpm
% 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
lps 6.56 gpm 0.47 lps 7.49 gpm
% 84 % 86 % 86 %
mm/hr 0.35 iph 10.16 mm/hr 0.40 iph
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/hr 0.35 iph 10.16 mm/hr 0.4 iph
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
lps 7.28 gpm 0.52 lps 8.32 gpm
% 80 % 82 % 82 %
mm/hr 0.35 iph 10.16 mm/hr 0.4 iph
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
lps 8.74 gpm 0.63 lps 9.99 gpm
% 81 % 82 % 82 %
mm/hr 0.35 iph 10.16 mm/hr 0.40 iph
mm 7/32 in 6.35 mm 1/4 in
m 80 psi 47.83 m 68 psi
ES
ph)
SI ES
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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 %
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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)
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Discharge
C.U.
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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
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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 %
iph 7.62 mm/hr 0.30 iph 8.89 mm/hr 0.35 iph
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
gpm 0.29 lps 4.68 gpm 0.34 lps 5.46 gpm
% 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
gpm 0.35 lps 5.62 gpm 0.41 lps 6.56 gpm
% 75 % 75 % 80 % 80 %
iph 7.62 mm/hr 0.30 iph 8.89 mm/hr 0.35 iph
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 %
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 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
gpm 0.39 lps 6.24 gpm 0.46 lps 7.28 gpm
% 70 % 70 % 75 % 75 %
iph 7.62 mm/hr 0.30 iph 8.89 mm/hr 0.35 iph
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
gpm 0.47 lps 7.49 gpm 0.55 lps 8.74 gpm
% 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
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5.63 Bar 184.62 ft
2.97 m3/h 105.0 ft3/h
0.83 lps 13.11 gpm
66 % 66 %
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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
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4.78 Bar 156.92 ft
3.40 m3/h 120.0 ft3/h
0.94 lps 14.98 gpm
75 % 75 %
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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
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19
20
10 15 20 25 30
Pressure-Head (m)
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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)
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35 40 45 50