Pivot design
Menu-driven calculators from the Pivot Design workbook.
Yellow fields are inputs — everything else calculates live, same as the original workbook.
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Company brand (print package)
Logo and business name print at the top of every worksheet in the design package.
Job header
Formulas match Pivot Design 1.52 (November 3, 2009) with 1.0 engines where the sheets were unchanged. Linear timer is kept from 1.0. Application rates are estimates — they depend on GPM, PSI, and end-gun throw.
Center pivot amp draw & voltage drop
Span wire, tower current, last-tower voltage, generator size.
Fusing report
Panel, span, booster, and drive-unit fuse packages.
Mainline electrical
Copper vs aluminum feeder size and voltage drop.
Center pivot pressure loss
Span pipe friction, regulator pressure, end-gun GPM.
Mainline pressure loss
Hazen-Williams friction on PIP, IPS, or custom pipe.
End gun radius
Nelson SR100 throw, nozzle, and acres by booster size.
Sprinkler GPM & IAR
Outlet GPM and instantaneous application rate.
Pivot percent timer chart
Hours and inches per revolution by percent timer.
Linear percent timer chart
Hours and inches per pass for a linear machine.
Design summary
Acres, TDH, brake HP, annual energy cost.
Reference tables
Pipe, wire, motor, generator, tire, and SR100 tables.