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c3d-quantity-takeoff

Calculate earthwork volumes and material quantities from Civil 3D corridors.

3|Updated Feb 17, 2026
Search Tags:#reports#quantity-takeoff#civil-3d#corridor#earthwork#pay-items#material-lists
One-click install
npx skills add https://github.com/hebackus/c3d-api-plugin --skill c3d-quantity-takeoff
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: c3d-quantity-takeoff
Source: https://github.com/hebackus/c3d-api-plugin/tree/main/skills/c3d-quantity-takeoff
Command: npx skills add https://github.com/hebackus/c3d-api-plugin --skill c3d-quantity-takeoff

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill automates the calculation of earthwork volumes, material totals, and related pay items from Civil 3D corridor data, reducing manual estimation effort.

Core Features & Use Cases

  • Material and volume calculation: Compute earthwork volumes and material quantities from corridor data and sample lines.
  • Pay item mapping: Assign pay items to Civil 3D objects using CSV-driven definitions and categories.
  • Reports generation: Produce XML-based and detailed quantity reports for cost estimation and documentation.

Quick Start

Provide a sample corridor, sample line group, and pay item configuration to generate a QTO report.

Frequently Asked Questions about c3d-quantity-takeoff

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I calculate earthwork quantities from a Civil 3D corridor?▼

Earthwork quantities are calculated by linking Civil 3D corridor objects and sample line groups to material lists, applying QTO criteria to compute cut and fill volumes for reporting.

What is the best way to map pay items to Civil 3D objects for quantity takeoff?▼

Pay item mapping uses CSV-driven definitions and categories to assign specific codes to Civil 3D objects, ensuring accurate material quantities and cost estimation during the QTO workflow.

Can I generate detailed quantity reports from Civil 3D sample line groups?▼

Detailed quantity reports are generated from sample line groups and corridor data, producing XML-based and detailed documentation for earthwork volumes and pay item totals.

Do I need a sample corridor and pay item configuration to run a QTO workflow?▼

Yes, a sample corridor, sample line group, and pay item configuration are required inputs to generate a QTO report and successfully execute the earthwork quantity takeoff process.

Does exporting solids work as an alternative workflow for Civil 3D material lists?▼

Exporting solids serves as an alternative workflow for calculating material volumes when standard sample line groups or QTO criteria methods do not fit the project requirements.

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