What quantities belong in a construction takeoff?
A takeoff is a quantity record that connects the scope to the drawing. A door is normally counted as an item; a route is measured as a length; a surface is measured as an area; a slab volume needs both area and depth. Keep those units explicit. A box drawn around a detected object identifies its location on an image; it does not establish physical dimensions.
| Quantity | Typical scope | What the estimator checks |
|---|---|---|
| Count | Doors, fixtures, or devices | Legend, type, duplicates, missing items, and schedule |
| Length | A selected pipe or conduit route | Scale, route, vertical changes, and details |
| Area | Glass, floor, wall, or roof surface | Dimensions, openings, surface geometry, and specification |
| Volume | Concrete or another measured solid | Checked area, depth, compatible units, and exclusions |
How do you do a takeoff from a PDF drawing?
- Set the scope. Confirm the current drawing revision, relevant sheets, legend, and specifications.
- Choose the quantity and unit. Separate item counts from measured lengths, areas, and volumes.
- Count or measure. Review automatic detections where available. For physical dimensions, use verified schedule dimensions or calibrate the drawing and select the geometry manually.
- Reconcile the result. Check omissions, duplicate items, inaccessible details, and overlap between sheets.
- Record the evidence. Keep the sheet, revision, location, method, unit, and exclusions with the quantity.
- Build the estimate. Apply checked material and labor rates, equipment, project conditions, overhead, and profit. Keep ordering allowances separate from measured scope.
What should a reviewable output look like?
The following is a blank review structure, not a customer result or an accuracy benchmark. Fill it with your project's checked quantities; do not infer missing values from an AI confidence score.
| Field | Record |
|---|---|
| Source | Drawing identifier, revision, location, and relevant specification |
| Quantity | Checked value, unit, and counting or measurement method |
| Review | Corrections, exclusions, unresolved items, and reviewer |
| Estimate | Rate source, quote date, labor assumptions, and separate allowances |
What does CyanBuild automate?
CyanBuild accepts PDF drawings and proposes detected-item counts for estimator review. Its separate manual measurement tools use a calibrated drawing and estimator-selected geometry. Automatic counts do not establish complete surface areas, route lengths, schedules, or material orders. Review the source drawing and the required scope before using the output in an estimate.
The product features and published plan allowances explain the available workflow. Check an actual drawing before choosing a plan. This guide makes no independent claim about detection accuracy, time savings, or superiority to another product.
How do you compare construction takeoff software?
Use the same drawing revision and a scope your estimator has already checked. Compare missing items, duplicates, unit handling, correction controls, source references, and exports. Check subscription terms against actual page volume and required features. A useful comparison accounts for the work needed to reach a reviewed quantity list, not just the initial detection result.
For a broader comparison, read the AI construction takeoff software guide and the estimating software buyer's guide.