Free tools for electrical contractors. Estimate dimensions, fill ratios, material costs, and pulling tension for underground duct bank projects.
Calculate duct bank dimensions, trench volume, encasement, backfill, conduit weight, and excavator lift planning.
Check NEC fill percentage or find the right conduit size for your cable configuration. Supports THHN, XHHW, USE-2, and more.
Size HDPE conduit for telecom and fiber runs. Check innerduct fit, pull tape length, and mandrel recommendations.
Generate a full material list and rough cost estimate for bid day. Conduit, spacers, encasement, bedding, backfill, and pull rope.
Filterable reference for conduit OD, ID, wall thickness, weight, and bending radius. Copy to Excel with one click.
Calculate estimated pulling tension and check jam ratio before pulling cable. Includes tugger sizing recommendations.
Get a free quote from DuctBankOne — engineering support, precast solutions, and nationwide delivery.
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