BOQ verification at scale — a knowledge graph architecture.

BOQ verification is manual, slow, and disputed.

Bill of Quantities reconciliation is the single most expensive coordination work in a road construction programme. Every BOQ line item represents a specific quantity of work at a specific specification — and every payment milestone depends on certifying that the line was delivered as described.

The historical process is paper-based: the contractor submits a measurement, the inspector verifies it, a Quantity Surveyor consolidates, the Project Director signs, the bill issues. Each stage is a coordination cost and a potential dispute point. At PMGSY scale — 7L+ km across thousands of packages — the cumulative friction is enormous.

• Manual measurement and certification per BOQ line — labour-intensive at scale
• Dispute resolution mechanism slow and evidence-poor
• No traceable link between verified field event and BOQ clearance
• Quantity surveyor consolidation a frequent reconciliation bottleneck

BOQ lines as nodes in a structured graph.

Cortex represents every BOQ line item as a structured node — linked to the contract, the package, the chainage range, the asset, the construction method, and the regulatory standard that governs it. The verification criteria for each line are encoded: what events must be confirmed for the line to clear?

When Boson telemetry or Photon vision events match a line's verification criteria, the line moves from pending to verified automatically. When events fail verification, a non-conformance is raised with the supporting evidence attached. The Quantity Surveyor's manual consolidation becomes an exception workflow rather than a default workflow.

A BOQ that clears itself against verified work.

The reference deployment on UPRRDA Package 6152 demonstrated 95/100 quality with automated BOQ-linked progress tracking across the full pre/during/post construction lifecycle. The model is now positioned as a reference architecture for NRIDA, NHAI, and state highway authorities operating at PMGSY scale.

The numbers behind the story.