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Duct Bank Calculator

Need to install a duct bank and want to get the particulars? Simply enter in the information below and Construction Monkey will calculate the trench sizes, backfill, and excavation requirements.

Enter Information

Excavation

Depth of Duct Bank:

Depth Measured from Grade to:

Length of Duct Bank:

feet

Minimum Width of Duct Bank:

inches

Conduit

Conduit:

Horizontal Spacing of Conduits:

Vertical Spacing of Conduits:

Encasement

Type of Fill Around Conduits:

Coverage on Top:

Coverage on Bottom:

Coverage on Left:

Coverage on Right:

Backfill

Material Over Top of Duct Bank:

Results

Enter all information and click "Calculate" button to get the calculation results.

Notes:

¹Calculations are precise and do not take into account waste or slop.

²Duct bank encasement does not account for volume that the conduit spacers will consume.

³Spacers are based on 1 spacer per 5 feet of conduit.

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No guarantees are made as to the accuracy of the calculation or compliance with local codes. Verify all calculations with a professional engineer. If you find an error, or have a suggestion, please send us an email.