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Service 01 / 07

Quantity Takeoff

Lengths, areas, volumes and counts measured from the drawings. Each quantity is recorded with its unit, the sheet it came from and the drawing revision.

Output
Quantity schedule
Workflow
Covers Drawing, Intelligence, Takeoff, then human review.
See the outputHow it's checked
A-101 · Ground floor plan · takeoff · Rev BIllustrative Example
Illustrative takeoff on a ground floor plan: external wall W-01 measured at 16.00 metres, room A-03 measured at 44.80 square metres, the skirting perimeter F-01 and three counted doors, with grid references, a scale bar and a revision B marker.ABCD1A-0344.80 m²F-01 · 27.20 mW-01 · 16.00 mB123D-01 · 3 nr05 mSCALE 1:100 · CHECKEDN

Markups

Markups (illustrative)
RefMeasured itemQty
W-01External wall · length16.00 m
A-03Room floor · area44.80 m²
F-01Skirting · length27.20 m
D-01Internal doors · count3 nr

Source A-101 · Rev B · scale checked

What it does

Quantities measured from the drawings, organised so they can be checked

Each element on the drawings is measured as a length, area, volume or count, and recorded with its unit and source sheet.

The quantities are grouped by element and by trade or package. They can then be priced, carried into a bill of quantities or checked line by line.

mLengths
Wall runs, skirtings, pipe and duct runs
m²Areas
Floors, walls, ceilings and finishes
m³Volumes
Concrete, excavation and fill
nrCounts
Doors, windows, fittings and fixtures
SHEETDrawing reference
Every line carries its source sheet
REVRevision
The revision each quantity was measured from

Inputs

What we work from

The project's own documents. Core inputs are needed for this service; the others are used where the project has them.

  • Architectural drawings

    Core

    Plans, sections and elevations.

  • Specifications

    Core

    Defines what each measured element is.

  • Structural drawings

    Where relevant

    Foundations, frames and slabs.

  • Building services drawings

    Where relevant

    Runs and fittings, where in scope.

  • Schedules

    Where relevant

    Door, window and finishes schedules.

Workflow

From drawing sheet to quantity schedule

Measurement starts only once the sheet and its scale are known, and nothing reaches the schedule unconfirmed.

  • Estimator
  • AI-assisted suggestion
  • Controlled calculation
  • Human review
  1. 01

    Drawing

    Register the drawings

    Sheets and revisions are listed, so every quantity has a known source.

    Who: Estimator

  2. 02

    Drawing

    Check the scale

    The scale is confirmed against a known dimension before measuring.

    Who: Estimator

  3. 03

    Intelligence

    Identify elements

    AI-Assisted Drawing Intelligence can suggest walls, rooms and symbols. Suggestions stay unconfirmed until checked.

    Who: AI-assisted suggestion

  4. 04

    Takeoff

    Measure

    Lengths, areas, volumes and counts are measured and confirmed.

    Who: Estimator

  5. 05

    Takeoff

    Organise

    Quantities are grouped by element and trade, with units and references.

    Who: Estimator

  6. 06

    Review

    Review

    The schedule is checked against the drawings before issue.

    Who: Human review

Deliverable

Quantity schedule

Measured on dimension-sheet principles: how many times, the dimensions, the squared result and the description.

Every output includes

  • Element and trade grouping
  • Quantity and unit on every line
  • Source sheet and revision
  • Notes where a measurement needs explaining
QT-A101Quantity schedule
Illustrative Example
Illustrative dimension sheet
TimesDimensionSquaredDescription
W-01 · Grid 1 / A–D · A-101 Rev B
1/16.0016.00External wall run · m
A-03 · A-101 Rev B
1/8.00 × 5.6044.80Room floor area · m²
F-01 · A-101 Rev B
2/8.0016.00Skirting, long walls
2/5.6011.20Skirting, short walls
Σ27.20Skirting total · m
D-01 · A-101 Rev B
3/—3Internal doors · nr
Illustrative Example — not a real projectSheet 1 of 1

Checked and traceable

Every quantity points back to a sheet

Before a schedule is issued, it is checked against the drawings it was measured from.

Checked before issue

  1. 01Scale confirmed on every sheet measured
  2. 02Unit matches the measurement type: m, m², m³ or nr
  3. 03Source sheet and revision on every line
  4. 04Counts re-checked against the drawing
  5. 05Unconfirmed suggestions kept out of the schedule

One line followed back to its source, and one drawing revision handled. Neither is real project data.

Illustrative Example
Trace · schedule line QT-01

  1. Source

    A-101 · Ground floor plan · Rev B

  2. Location

    Grid 1 / A–D

  3. Markup

    W-01 · External wall

  4. Measurement

    16.00 m

  5. Schedule line

    QT-01 · Masonry

  6. State

    Reviewed

Revision · W-01 · External wall

Was 15.20 m · Rev A

changed to 16.00 m · Rev B

The change is flagged, re-measured and reviewed before the schedule is reissued.

Quantity Takeoff

Start with measured quantities

The other services build on a quantity takeoff. Next, see how a quantity schedule becomes a structured bill of quantities.

Get a quoteNext: BOQ Preparation

Related services

  • Output · Bill of Quantities

    BOQ Preparation

    Bills of Quantities structured into work sections, with clear item descriptions, units and quantities.

  • Output · Material schedule

    Material Takeoff

    Material schedules derived from the drawings, listing each material with its unit and quantity.

  • Output · Cost estimate

    Construction Cost Estimating

    Cost estimates built up from measured quantities and explicit rates, with the calculation inputs kept visible for review.