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AdvancedFree Navisworks course about 16 min

Quantification and coordination reporting

Navisworks can measure quantities from models and produce the reports that keep coordination moving. Learn what quantification can and can’t do, and how to report well.

In this lesson you will

  • Run a model take-off with Quantification
  • Understand take-off limits
  • Export quantities and reports
  • Produce a useful coordination meeting pack

Quantification

In Navisworks Manage, Quantification takes off quantities from model objects into a catalogue of items and resources: counts, lengths, areas and volumes, grouped by your structure (e.g. by work breakdown). You can also do 2D and virtual take-offs for items not modelled.

Know the limits

Model quantities are only as good as the models: missing, duplicated or wrongly modelled elements produce wrong numbers. Measurement rules (how openings, overlaps and wastage are treated) must match what the cost planner expects. Always reconcile with drawings and label quantities with the model version and date.

Coordination reports

A good coordination pack is short:

  • Summary: models received, versions, what was tested.
  • Top issues with viewpoint images, locations, responsible party and due date.
  • Progress: clash counts per test over time.
  • Decisions from the last meeting and their status.

Export clash reports as HTML/viewpoint reports and issues as BCF where the team uses it.

Structuring a take-off

Organise items the way the cost plan is organised — by trade or element (e.g. substructure, frame, upper floors, roof, external walls) — so results drop straight into it. Map model properties such as category, type and level to catalogue items, and keep a note of which model versions were measured.

Quick reference

Command / toolHow to start itWhat it does
QuantificationHome tab (Manage)Model take-off
Export quantitiesQuantification workbookExports to Excel/XML
Clash reportsClash Detective › ReportHTML/XML reports

Common mistakes

  • Quantities differ from the cost plan.

    Agree measurement rules; check model completeness and duplicates.

  • Reports list thousands of clashes nobody reads.

    Report grouped issues and trends.

  • Taking off from models with duplicated elements.

    Run a duplicates clash test first and ask authors to remove doubles.

Exercise

Take-off and report

  1. Take off columns (count, volume) and slabs (area, volume) from a structural model.
  2. Export to Excel and note the model version.
  3. Assemble a two-page coordination report from your last clash round.

You should end up with: A labelled take-off and a concise report.

Checklist

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Lesson quiz

1 / 4

Model quantities are only as reliable as the models.

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Free KitWren tools that help

Free, independent learning material written for KitWren. Navisworks is a registered trademark of Autodesk, Inc. KitWren is not affiliated with, sponsored or endorsed by Autodesk. We never provide software downloads, licence keys or cracks — use the official sources.