Extract quantities from the BIM model. Extracted, validated, and signed off by a quantity surveyor.
Manual extraction is slow, error-prone, and disconnected from the model. Every design change forces a full re-measure.
Scaling from 2D drawings misses elements, counts items twice, and varies by trade. Errors cascade into the cost plan.
Every design revision forces a full re-measure. The cost plan falls behind the model.
Quantities live in spreadsheets with no link to the model. No traceability of what was counted.
Quantities extracted from the BIM, validated by a QS, formatted for your cost plan.
| Layer | What it is | Example |
|---|---|---|
| 1 Model Audit | Verify the model is extraction-ready - LOD, element classification, naming, completeness. | LOD check, classification mapping, gap identification, extraction readiness report |
| 2 Rule-Based Extraction | Automated quantity extraction using classification rules mapped to your cost plan structure. | Element quantities by trade, area/volume/length schedules, BOQ-mapped outputs |
| 3 Manual Validation | QS staff verify every item — against the model and cost plan. | Cross-check against model, flag anomalies, verify cost codes, sign-off package |
| 4 Deliverable | Quantity schedules linked to the model, integrated with your BOQ. | Elemental schedules, trade breakdowns, cost plan integration, revision history, methodology |
Audit, extract, validate, deliver. Full traceability from model to cost plan.
Verify the model is extraction-ready - LOD, classification, completeness.
Map model classifications to your cost plan structure.
Flag missing elements and unclassified objects.
Automated extraction mapped to your cost plan structure.
Generate schedules in your BOQ format.
Flag outliers and duplicate counts.
QS staff verify every quantity against the model.
Verify every line item maps to the cost plan.
Compare against previous extractions - highlight what changed.
Schedules formatted for QS review and approval.
Quantities formatted for your cost plan.
Extraction rules, validation steps, and assumptions.
Every project runs to ISO 19650. EIR development, BEP governance, CDE protocols and structured information exchange at every milestone.