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See how long the pivot takes per revolution and how many millimeters of water it applies with each revolution, at the set percent dial.
Pre-sizing and estimating tool: the results do not replace a design, calculation, or report signed by a qualified professional, nor verification against the applicable standards.
Top view of the pivot: the irrigated area, the full revolution, and the 50% and 75% rings of the radius. Unscaled water schematic; the drawing shows the geometry, not the actual distribution.
Millimeters applied per revolution at different settings; the point is your setting.
Millimeters per revolution at the current flow rate and with variations; the highlighted bar is your flow rate.
Drag the controls to simulate data different from what you entered (from 30% less to 30% more) and watch the result change instantly.
Return time and depth per revolution for percent dial settings of 40% to 100%, with the radius and flow you entered.
The calculation done in steps, with the values you entered.
The calculation memo gathers this page's inputs, results, equations, assumptions, and references, with fields for project, responsible person, and review. The full report also includes the charts and interpretations, in color. In the print window, choose Save as PDF.
Enter the pivot radius, the equipment's flow rate, the round-trip time with the percent meter at 100% (from the manual), and the current setting. The calculator shows the round-trip time, the volume per revolution, and the applied depth.
Radius of 400 m, flow of 150 m³/h, 24 h return time at 100% and percentimeter at 60%.
Area = 3.1416 × 400² ÷ 10,000 = 50.3 ha. Time = 24 ÷ 0.6 = 40 h. Volume = 150 × 40 = 6,000 m³. Depth = 6,000 ÷ (10 × 50.3) = 11.9 mm per revolution.
It is the pivot speed setting, in percent. At 100%, the pivot turns at maximum speed; at 50%, it takes twice as long per revolution.
From the manufacturer's manual, which depends on the pivot length. It is a factory figure that you should check on the equipment.
Because it sets the runoff risk and uniformity. If the depth per revolution is high, the soil may not absorb it and water runs off.
No. It calculates the depth per revolution. The amount needed comes from the water balance and the irrigation interval.
Important notice: the Agrocalcs tools make estimates and preliminary sizing based on the data entered and on published engineering methods. They do not replace a design, a calculation report or a report signed by a qualified professional (CREA/ART), nor verification against the applicable technical standards and legislation, such as the Regulatory Standards of the Ministry of Labor. Material and fuel properties vary: check with the manufacturer or with analyses of your process before deciding. By using the site, you agree to the Terms of Use.
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