CAD-QA Index — Report (iModel & iTwin Rollup)

The Report (iModel & iTwin Rollup) tab transforms per-model CAD-QA calculation runs into executive assurance dashboards across both the active iModel (Level 3) and the overarching iTwin Portfolio (Level 4).

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Level 4 — iTwin Portfolio CAD-QA Rollup

On major rail, highway, and hospital programmes, federated designs are often partitioned across multiple iModels within a single project iTwinId (for example, Track & Alignment, Structures & Bridges, Overhead Line Electrification, and Signalling).

At the top of the Report tab, the Level 4 — iTwin Portfolio Rollup banner aggregates the most recent CAD-QA calculation run per iModel for the active authority configuration:

• iTwin Deliverable Score (%): Deliverable-count-weighted compliance across all evaluated CAD files in the iTwin.
• iTwin Element-Weighted Score (%): Element-volume-weighted compliance across all evaluated iModels.
• Overall Assurance Gate Badge: Worst-case portfolio RAG status (RED — BLOCKER if any iModel has a rejected RED deliverable, AMBER — VARIATION if any model has an Amber deviation, or GREEN — COMPLIANT).
• Per-iModel Breakdown Table: Lists each evaluated iModel, Changeset, Deliverable Files count, Total Elements, Deliverable Score, Element-Weighted Score, and Assurance Gate.

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Interactive Analytics Slicers

Use the Analytics Slicers bar to focus the four Level 3 charts on specific deliverables or assurance gates:

1. Filter by Deliverable Model: Isolate a single .dgn / .dwg / .rvt deliverable container or view All Deliverable Models.
2. Filter by RAG Gate: Filter across All Severities (Red / Amber / Green), Red — Mandatory Blockers, Amber — Variation Permitted, or Green — Best Practice.

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Level 3 Analytical Charts (2×2 Grid)

1. Per-Model Deliverable Score (%)

A bar chart comparing the weighted CAD-QA score (0–100%) of every deliverable model matching the active slicers—allowing BIM coordinators to spot non-compliant CAD containers immediately before a Friday CDE submission gate.

2. Rule Compliance Breakdown Across Models (%)

Aggregates the mean compliance percentage for every active rule code (e.g., CP0091-6.1, CP0091-7.4.3, CP0091-9.6) across the filtered models, excluding N/A rules. Low bars pinpoint systemic supply-chain authoring habits—such as unpurged Default levels (CP0091-10.3.1.3) or non-standard BS 1192 / Table 6–8 level prefixes (CP0091-9.6).

3. Deliverable Complexity (Elements) vs. CAD-QA Score

A scatter plot mapping Total Elements in Model (X-axis) against CAD-QA Score % (Y-axis). Models in the bottom-right quadrant (high element volume, low CAD-QA score) represent the highest remediation priority prior to multidisciplinary clash detection or drawing extraction.

4. Historical Changeset Trend

A dual-series line chart tracking both Deliverable File Score (%) and Element-Weighted Score (%) across sequential calculation runs—demonstrating progressive CAD hygiene improvement from early Work in Progress (S0) iterations through formal client handover (A1).