# Platform Overview — Geotechnical Data Management | G&

> See the G& platform: central geotechnical database, four-layer validation, review and approval, and AGS 4.1 deliverables — one controlled line from field to submission.

## The five stages

### 01 — Capture

Field and lab measurements entered once at source, bound to location, depth interval, and sample ID on write.

- Daily records
- SPT / CPT increments
- Sampling & groundwater
- Legacy AGS & Excel intake

### 02 — Govern

One central geotechnical database with referential integrity enforced at the database, and standards held as versioned data.

- Parent–child schema
- Versioned standards
- Record history
- Role-based access

### 03 — Validate

Data integrity, engineering logic, AGS compliance, and plausibility run continuously — not at export time.

- Four validation layers
- Client rule sets
- Issue log
- Corrections workflow

### 04 — Approve

QA review then explicit approval by a named signing engineer. Approved is the only state a deliverable can be built from.

- QA review queues
- Forward-only status
- Named approvals
- Immutable audit log

### 05 — Deliver

AGS 4.1 packages, borehole logs, factual reports, reviewed report comments, client exports, and IPC quantities — all from approved records.

- AGS 4.1 package
- Factual report creation
- Report review & comments · beta
- Submission readiness view

## Interoperability

- **AGS 4.1** — Native in and out, dictionary-checked
- **Excel** — Round-trip with mapping profiles
- **Legacy archives** — Archive intake before 2028 end-of-life
- **Design tools** — Coexists via open formats
- **Modelling workflows** — Export-ready data
- **GIS / CSV** — Regional coordinate systems preserved

## Modules

- **M01 Field logging** (Field) — Capture once, at source
- **M02 In-situ testing** (Field) — Every increment, bound to depth
- **M03 Central geotechnical database** (Database) — One governed estate
- **M04 Import & migration** (Database) — Digitised is not verified
- **M05 Laboratory lifecycle** (Laboratory) — Request to result, one record
- **M06 Quantities & IPC** (Laboratory) — Billed from approved records
- **M07 Borehole logs & factual reports** (Output) — Publication-grade, reviewed from the record
- **M08 Charts & dashboards** (Output) — Ground truth, plotted
- **M09 Submission control** (Governance) — Nothing leaves unvalidated
- **M10 Roles, audit & hosting** (Governance) — Tender-grade accountability