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Financing Options

Click here for the Northland Capital Application

Click here for the Stearns Bank Application

Drainage Coefficient

A drainage coefficient is a design parameter that specifies the capacity of a drainage system. It’s typically expressed as a fraction of an acre-inch of water that the system can remove from the soil in a 24 hour period.

EX: If you have a 1/2" drainage coefficient, the drainage system is designed to remove 1/2" of water from the soil in a 24 hour period.

Figuring Grade and Slope

Ft/Ac of Tile Patterns

Figuring Grade & Slope

Grade = Rise over Run x 100%

Slope = Rise over Run

Using Decimal Ft.

1.0' / 1000' = 0.001 X 100 = 0.1% Grade

1.0' / 4.0' = 25% Slope or 1:4 Slope

10' - 4,356'

20' - 2,178'

30' - 1,452'

40' - 1,089'

50' - 871'

60' - 726'

70' - 622'

80' - 544'

100' - 435’

Spacing - Ft/Ac

Installation Cost Calculator

Ft/Ac x $/ft Pipe & Fittings + $/ft Labor/Equipment

871' x $.50 + $.25 = $653.25/Ac

Universities, Apps, IR, & Safety

There are many resources available from University research to Drainage Schools. Slide Rules to online apps.

Beck’s Hybrids PFR

Precision Planting PTI

Ag Phd Resource Apps

Iowa State University

Ohio State University

University of Illinois

University of Minnesota

University of Guelph

North Dakota State University

South Dakota State University

Michigan State University

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