Rudenberg’s Formula for the Placement of an Anode Ground Bed

This formula considers the attenuation of the pipe to determines the required structure voltage based on the current output.
Rudenberg’s formula is very theoretical just using pipe parameters. Other factors to be considered include the presence of foreign metallic structures, accessibility and availability of a power source which are not included.

Vx — Potential at X in volt caused by grounds anode current

I — Ground anode current(Amps)

ρ — Actual soil resitivity (0hm / cm)

y — Length of anode in earth(ft)

x — distance from ground anode(ft)

If x > 10y then,

Input Parameters

To create a new case, click the “Add Case” button
Select the Rudenberg’s Formula for the Placement of an Anode Ground Bed application from the Cathodic Protection module list.
Enter Case Name, Location, Date and any necessary notes.
Fill out all required fields.
Make sure the values you are inputting are in the correct units.
Click the CALCULATE button.

Ground Anode Current
Actual Soil Resistivity
Length of Anode in Earth
X – Distance from the Ground to Anode

Outputs/Reports

View the results.
If an input parameter needs to be edited be sure to hit the CALCULATE button after the change.
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To generate a REPORT, click the REPORT button.
The user may export the Case/Report by clicking the Export to Excel/PowerPoint icon.
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Potential at X Caused by Ground Anode Current

Rudenberg’s Formula for the Placement of an Anode Ground Bed

Input Parameters

Outputs/Reports

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