Reference tables
Copied from Pivot Design 1.0 / 1.52: pipe, wire, motors, generators, tires, friction, and Nelson SR100.
Motor current (A)
| HP | 60 Hz | 50 Hz |
|---|---|---|
| 0 | 0 | 0 |
| 0.6 | 1.1 | 1.1 |
| 0.75 | 1.5 | 1.5 |
| 1 | 1.9 | 1.9 |
| 1.2 | 1.8 | 1.8 |
| 1.5 | 2.55 | 2.55 |
| 2 HP BP | 4 | 4 |
| 5 HP BP | 7.3 | 7.3 |
| 7 1/2 HP BP | 9.3 | 9.3 |
Span wire factor
| Gauge | Factor |
|---|---|
| 8 | 0.000876 |
| 10 | 0.001312 |
| 12 | 0.002149 |
| 13 | 0.002645 |
| 14 | 0.003295 |
Generator frame table
| Min kW | Size kW | Efficiency | Frame |
|---|---|---|---|
| 0 | 5 | 0.799 | 280 |
| 5.001 | 7.5 | 0.821 | 280 |
| 7.501 | 10 | 0.845 | 280 |
| 10.001 | 12 | 0.848 | 280 |
| 12.001 | 15 | 0.861 | 280 |
| 15.001 | 20 | 0.865 | 360 |
| 20.001 | 25 | 0.877 | 360 |
| 25.001 | 30 | 0.891 | 360 |
| 30.001 | 40 | 0.895 | 360 |
| 40.001 | 50 | 0.9 | 440 |
| 50.001 | 60 | 0.903 | 440 |
| 60.001 | 75 | 0.906 | 440 |
| 75.001 | 100 | 0.907 | 440 |
| 100.001 | 125 | 0.915 | 580 |
| 125.001 | 150 | 0.921 | 580 |
| 150.001 | 175 | 0.926 | 580 |
| 175.001 | 200 | 0.931 | 580 |
| 200.001 | 250 | 0.936 | 680 |
Helical standard generator kW (none / 2 / 5 / 7.5 HP BP)
| Drive units | None | 2 HP | 5 HP | 7.5 HP |
|---|---|---|---|---|
| 2 | 5 | 5 | 10 | 10 |
| 3 | 5 | 7.5 | 10 | 10 |
| 4 | 5 | 7.5 | 10 | 12 |
| 5 | 5 | 7.5 | 10 | 12 |
| 6 | 5 | 7.5 | 12 | 12 |
| 7 | 7.5 | 10 | 12 | 15 |
| 8 | 7.5 | 10 | 12 | 15 |
| 9 | 7.5 | 10 | 12 | 15 |
| 10 | 7.5 | 12 | 15 | 15 |
| 11 | 10 | 12 | 15 | 20 |
| 12 | 10 | 12 | 15 | 20 |
| 13 | 10 | 15 | 15 | 20 |
| 14 | 12 | 15 | 20 | 20 |
| 15 | 12 | 15 | 20 | 20 |
| 16 | 12 | 15 | 20 | 20 |
| 17 | 15 | 20 | 20 | 20 |
| 18 | 15 | 20 | 20 | 25 |
| 19 | 15 | 20 | 20 | 25 |
| 20 | 15 | 20 | 20 | 25 |
| 21 | 20 | 20 | 25 | 25 |
| 22 | 20 | 20 | 25 | 25 |
| 23 | 20 | 25 | 25 | 25 |
| 24 | 20 | 25 | 25 | 30 |
| 25 | 20 | 25 | 30 | 30 |
Helical high-speed generator kW
| Drive units | None | 2 HP | 5 HP | 7.5 HP |
|---|---|---|---|---|
| 2 | 5 | 7.5 | 7.5 | 10 |
| 3 | 5 | 7.5 | 7.5 | 12 |
| 4 | 7.5 | 7.5 | 7.5 | 12 |
| 5 | 7.5 | 10 | 10 | 15 |
| 6 | 7.5 | 10 | 10 | 15 |
| 7 | 7.5 | 12 | 12 | 15 |
| 8 | 10 | 12 | 15 | 20 |
| 9 | 10 | 15 | 15 | 20 |
| 10 | 12 | 15 | 15 | 20 |
| 11 | 12 | 15 | 20 | 20 |
| 12 | 15 | 20 | 20 | 20 |
| 13 | 15 | 20 | 20 | 25 |
| 14 | 15 | 20 | 20 | 25 |
| 15 | 20 | 20 | 25 | 25 |
| 16 | 20 | 25 | 25 | 25 |
| 17 | 20 | 25 | 25 | 30 |
| 18 | 20 | 25 | 25 | 30 |
| 19 | 25 | 25 | 25 | — |
| 20 | 25 | 25 | — | — |
| 21 | 25 | 30 | — | — |
| 22 | 25 | 30 | — | — |
| 23 | 25 | — | — | — |
| 24 | 30 | — | — | — |
| 25 | 30 | — | — | — |
Pivot span pipe factors
| ID | Label | Factor vs 6-5/8 |
|---|---|---|
| 10 | 10" | 0.13 |
| 8-5/8 | 8 5/8" | 0.267 |
| 8-5/8-poly | 8 5/8" POLY | 0.325 |
| 8 | 8" | 0.39 |
| 6-5/8 | 6 5/8" | 1 |
| 6-5/8-poly | 6 5/8" POLY | 1.293 |
| 6 | 6" | 1.65 |
| 5-9/16 | 5 9/16" | 2.55 |
| 5 | 5" | 4.4 |
| 4 | 4" | 13.97 |
Multiple-outlet friction percent (1–100%)
| Percent of length | Table |
|---|---|
| 1 | 0.03 |
| 2 | 0.05 |
| 3 | 0.06 |
| 4 | 0.08 |
| 5 | 0.1 |
| 6 | 0.12 |
| 7 | 0.14 |
| 8 | 0.16 |
| 9 | 0.17 |
| 10 | 0.19 |
| 11 | 0.21 |
| 12 | 0.23 |
| 13 | 0.24 |
| 14 | 0.26 |
| 15 | 0.28 |
| 16 | 0.29 |
| 17 | 0.31 |
| 18 | 0.33 |
| 19 | 0.34 |
| 20 | 0.36 |
| 21 | 0.37 |
| 22 | 0.39 |
| 23 | 0.4 |
| 24 | 0.42 |
| 25 | 0.43 |
| 26 | 0.45 |
| 27 | 0.46 |
| 28 | 0.48 |
| 29 | 0.49 |
| 30 | 0.51 |
| 31 | 0.52 |
| 32 | 0.54 |
| 33 | 0.55 |
| 34 | 0.56 |
| 35 | 0.58 |
| 36 | 0.59 |
| 37 | 0.6 |
| 38 | 0.62 |
| 39 | 0.63 |
| 40 | 0.64 |
| 41 | 0.65 |
| 42 | 0.66 |
| 43 | 0.68 |
| 44 | 0.69 |
| 45 | 0.7 |
| 46 | 0.71 |
| 47 | 0.72 |
| 48 | 0.73 |
| 49 | 0.74 |
| 50 | 0.75 |
| 51 | 0.76 |
| 52 | 0.77 |
| 53 | 0.78 |
| 54 | 0.79 |
| 55 | 0.8 |
| 56 | 0.81 |
| 57 | 0.82 |
| 58 | 0.83 |
| 59 | 0.84 |
| 60 | 0.85 |
| 61 | 0.86 |
| 62 | 0.86 |
| 63 | 0.87 |
| 64 | 0.88 |
| 65 | 0.89 |
| 66 | 0.89 |
| 67 | 0.9 |
| 68 | 0.91 |
| 69 | 0.91 |
| 70 | 0.92 |
| 71 | 0.93 |
| 72 | 0.93 |
| 73 | 0.94 |
| 74 | 0.94 |
| 75 | 0.95 |
| 76 | 0.95 |
| 77 | 0.96 |
| 78 | 0.96 |
| 79 | 0.97 |
| 80 | 0.97 |
| 81 | 0.98 |
| 82 | 0.98 |
| 83 | 0.98 |
| 84 | 0.99 |
| 85 | 0.99 |
| 86 | 0.99 |
| 87 | 0.99 |
| 88 | 1 |
| 89 | 1 |
| 90 | 1 |
| 91 | 1 |
| 92 | 1 |
| 93 | 1 |
| 94 | 1 |
| 95 | 1 |
| 96 | 1 |
| 97 | 1 |
| 98 | 1 |
| 99 | 1 |
| 100 | 1 |
PIP plastic irrigation pipe (OD and wall, in)
| Nom. | OD | 50 psi | 80 psi | 100 psi | 125 psi |
|---|---|---|---|---|---|
| 4 | 4.13 | — | — | 0.101 | 0.127 |
| 6 | 6.14 | 0.076 | 0.12 | 0.15 | 0.189 |
| 8 | 8.16 | 0.101 | 0.16 | 0.199 | 0.251 |
| 10 | 10.2 | 0.126 | 0.2 | 0.249 | 0.314 |
| 12 | 12.24 | 0.151 | 0.24 | 0.299 | 0.377 |
| 14 | 14.28 | — | 0.28 | 0.348 | 0.439 |
| 15 | 15.3 | — | 0.3 | 0.373 | 0.471 |
| 18 | 18.7 | — | 0.367 | 0.456 | 0.575 |
IPS thermoplastic pipe (OD and wall, in)
| Nom. | OD | 100 psi | 125 psi | 160 psi | 200 psi |
|---|---|---|---|---|---|
| 4 | 4.5 | 0.11 | 0.138 | 0.173 | 0.214 |
| 5 | 5.563 | 0.136 | 0.171 | 0.214 | 0.265 |
| 6 | 6.625 | 0.162 | 0.204 | 0.255 | 0.316 |
| 8 | 8.625 | 0.21 | 0.265 | 0.332 | 0.41 |
| 10 | 10.75 | 0.262 | 0.331 | 0.413 | 0.551 |
| 12 | 12.75 | 0.311 | 0.392 | 0.49 | 0.606 |
Hazen-Williams C
| Index | C |
|---|---|
| 1 | 150 |
| 2 | 140 |
| 3 | 130 |
| 4 | 120 |
| 5 | 100 |
Copper feeder (table 80 / 60 and ampacity)
| Size | PF 0.8 table | PF 0.6 table | Ampacity |
|---|---|---|---|
| 1 | 251 | 213 | 130 |
| 2 | 306 | 254 | 115 |
| 3 | 375 | 308 | 100 |
| 4 | 474 | 381 | 85 |
| 6 | 727 | 573 | 65 |
| 8 | 1130 | 876 | 50 |
| 10 | 1712 | 1312 | 35 |
| 12 | 2829 | 2149 | 25 |
| 14 | 4366 | 3295 | 20 |
| 0 | 207 | 180 | 150 |
| 00 | 174 | 154 | 175 |
| 000 | 145 | 133 | 200 |
| 0000 | 124 | 116 | 230 |
| 250m | 110 | 107 | 285 |
| 300m | 98 | 96 | 310 |
| 350m | 91 | 90 | 335 |
| 400m | 83 | 84 | 380 |
| 500m | 74 | 77 | 420 |
| 600m | 69 | 74 | 475 |
| 750m | 62 | 67 | 545 |
| 1000m | 57 | 64 | 255 |
Aluminum feeder
| Size | PF 0.8 table | PF 0.6 table | Ampacity |
|---|---|---|---|
| 1 | 389 | 316 | 100 |
| 2 | 486 | 389 | 90 |
| 4 | 751 | 588 | 65 |
| 6 | 1169 | 905 | 50 |
| 8 | 1848 | 1416 | 40 |
| 10 | 2819 | 2144 | 30 |
| 12 | 4487 | 3396 | 20 |
| 0 | 318 | 263 | 120 |
| 00 | 261 | 218 | 135 |
| 000 | 219 | 187 | 155 |
| 0000 | 178 | 155 | 180 |
| 250m | 157 | 140 | 230 |
| 300m | 136 | 124 | 250 |
| 350m | 122 | 114 | 270 |
| 400m | 93 | 105 | 310 |
| 500m | 96 | 95 | 340 |
| 600m | 86 | 86 | 385 |
| 750m | 76 | 77 | 445 |
| 1000m | 65 | 69 | 205 |
Timer RPM codes
| Code | RPM |
|---|---|
| 1 | 29 |
| 2 | 30 |
| 3 | 35 |
| 4 | 37 |
| 5 | 43 |
| 6 | 56 |
| 7 | 58 |
| 8 | 68 |
| 9 | 84 |
| 10 | 86 |
| 11 | 100 |
| 13 | 34 |
Tires
| ID | Size | Circumference, in |
|---|---|---|
| 1 | 10R x 22.5 | 123 |
| 2 | 11.2 x 24 | 127 |
| 3 | 11 x 24.5 RET | 131.76 |
| 4 | 14.9 x 24 | 140.75 |
| 5 | 16.9 x 24 | 150.11 |
| 6 | 11.2 x 38 | 173.43 |
| 7 | Measured | measured |
Nelson SR100 nozzles
| Size | ANFL | Throw A | Throw B |
|---|---|---|---|
| 0.5 | 7.1 | 32.46 | 0.291999 |
| 0.55 | 8.871 | 34.252 | 0.291999 |
| 0.6 | 10.369 | 34.662999 | 0.301999 |
| 0.65 | 12.201 | 36.3879999 | 0.3009999 |
| 0.7 | 13.956 | 35.862 | 0.315 |
| 0.75 | 15.946 | 41.38 | 0.2889999 |
| 0.8 | 18.053 | 42.485999 | 0.2909999 |
| 0.85 | 20.635 | 42.814 | 0.2959999 |
| 0.9 | 22.874 | 43.81 | 0.2969999 |
| 1 | 28.918 | 42.774 | 0.3059999 |
2 HP booster (GPM → head, ft)
| GPM | Head, ft |
|---|---|
| 0 | 74 |
| 2 | 74 |
| 3 | 74.5 |
| 4 | 75 |
| 6 | 75 |
| 8 | 75 |
| 9 | 75.5 |
| 10 | 76 |
| 12 | 76 |
| 14 | 76 |
| 15 | 76.5 |
| 16 | 77 |
| 18 | 77 |
| 20 | 77 |
| 22 | 77 |
| 23 | 77.5 |
| 24 | 78 |
| 26 | 78 |
| 28 | 78 |
| 30 | 78 |
| 32 | 78 |
| 33 | 78.5 |
| 34 | 79 |
| 36 | 79 |
| 38 | 79 |
| 40 | 79 |
| 42 | 79 |
| 44 | 79 |
| 46 | 79 |
| 48 | 79 |
| 49 | 79.5 |
| 50 | 80 |
| 52 | 80 |
| 54 | 80 |
| 56 | 80 |
| 58 | 80 |
| 60 | 80 |
| 62 | 80 |
| 64 | 80 |
| 66 | 80 |
| 68 | 80 |
| 70 | 80 |
| 72 | 80 |
| 74 | 80 |
| 75 | 79.5 |
| 76 | 79 |
| 78 | 79 |
| 80 | 79 |
| 82 | 79 |
| 84 | 79 |
| 86 | 79 |
| 88 | 79 |
| 90 | 79 |
| 92 | 79 |
| 94 | 79 |
| 95 | 78.5 |
| 96 | 78 |
| 98 | 78 |
| 100 | 78 |
| 102 | 78 |
| 103 | 77.5 |
| 104 | 77 |
| 106 | 77 |
| 108 | 77 |
| 110 | 77 |
| 111 | 76.5 |
| 112 | 76 |
| 114 | 76 |
| 115 | 75.5 |
| 116 | 75 |
| 118 | 75 |
| 120 | 75 |
| 121 | 74.5 |
| 122 | 74 |
| 124 | 74 |
| 125 | 73.5 |
| 126 | 73 |
| 127 | 72.5 |
| 128 | 72 |
| 130 | 72 |
5 HP booster (GPM → head, ft)
| GPM | Head, ft |
|---|---|
| 0 | 97 |
| 5 | 97 |
| 10 | 97 |
| 15 | 98 |
| 20 | 98 |
| 25 | 98 |
| 30 | 99 |
| 35 | 99 |
| 40 | 99 |
| 45 | 99 |
| 50 | 99 |
| 55 | 99 |
| 60 | 98 |
| 65 | 98 |
| 70 | 97 |
| 75 | 97 |
| 80 | 97 |
| 85 | 96 |
| 90 | 96 |
| 95 | 96 |
| 100 | 96 |
| 105 | 96 |
| 110 | 95 |
| 115 | 95 |
| 120 | 95 |
| 125 | 94 |
| 130 | 94 |
| 135 | 93 |
| 140 | 92 |
| 145 | 91 |
| 147.5 | 90 |
| 150 | 89 |
| 155 | 88 |
| 160 | 87 |
| 162.5 | 86 |
| 165 | 85 |
| 170 | 84 |
| 172.5 | 83 |
| 175 | 82 |
7½ HP booster (GPM → head, ft)
| GPM | Head, ft |
|---|---|
| 0 | 122 |
| 5 | 122 |
| 10 | 123 |
| 15 | 123 |
| 20 | 123 |
| 25 | 123 |
| 30 | 123 |
| 35 | 123 |
| 40 | 123 |
| 45 | 123 |
| 50 | 124 |
| 55 | 124 |
| 60 | 124 |
| 65 | 124 |
| 70 | 123 |
| 75 | 123 |
| 80 | 123 |
| 85 | 123 |
| 90 | 123 |
| 95 | 122 |
| 100 | 122 |
| 105 | 122 |
| 110 | 122 |
| 115 | 121 |
| 120 | 121 |
| 125 | 120 |
| 130 | 120 |
| 135 | 120 |
| 137.5 | 119 |
| 140 | 118 |
| 145 | 117 |
| 150 | 116 |
| 155 | 116 |
| 160 | 115 |
| 165 | 114 |
| 170 | 113 |
| 175 | 112 |
| 177.5 | 111 |
| 180 | 110 |
| 182.5 | 109 |
| 185 | 108 |
| 187.5 | 107 |
| 190 | 106 |
| 195 | 105 |
| 197.5 | 104 |
| 200 | 103 |
| 202.5 | 102 |
| 205 | 101 |
| 207.5 | 100 |
| 210 | 99 |
| 212.5 | 98 |
| 215 | 97 |
| 217.5 | 96 |
| 220 | 95 |
| 222.5 | 94 |
| 225 | 93 |
| 227.5 | 92 |
| 230 | 91 |