# Construction & infrastructure use cases

> Connect drawing revisions, contractor evidence, and project handover records.

Canonical page: https://www.truthlocks.com/industries/construction
Category: Industry & infrastructure

Construction teams coordinate documents across designers, contractors, and owners. Signed records make it easier to identify the version shared and the approval or reported action attached to it.

## Design & engineering: Identify the drawing version approved for a stage

A site team may receive a drawing that differs from the reviewed design package.

### What to record

Record drawing fingerprints, revision identifiers, project references, and the responsible approval event.

### What to review

Compare the version presented with the approved record and return changed or unclear instructions to the design team.

### The outcome

A clear reference for the drawing revision associated with a recorded approval.

## General contractors: Keep subcontractor reviews connected to their documents

Subcontractor training and assurance evidence arrives in inconsistent formats.

### What to record

Record document fingerprints or supported credentials, source references, assignment scope, and the reviewing team’s outcome.

### What to review

Check source and status where supported and independently assess suitability for the proposed work.

### The outcome

An organized evidence record for each subcontractor review.

## Infrastructure owners: Deliver a checkable project handover manifest

Owners receive large packages of manuals, drawings, and reports with missing version context.

### What to record

Sign a manifest containing approved document fingerprints, project identifiers, release version, and the responsible handover source.

### What to review

Compare received files with the manifest and resolve missing or changed items through the agreed acceptance process.

### The outcome

A defined handover package that the receiving team can check file by file.

## Before you begin

Choose a document-control or handover workflow and agree on project references. Qualified teams remain responsible for design adequacy, site safety, and acceptance.

## Relevant capabilities

- [Digital records](https://www.truthlocks.com/product/attestation-service)
- [Action receipts](https://www.truthlocks.com/product/receipts)
- [Proof bundles](https://www.truthlocks.com/product/proof-bundles)

These are practical workflow examples, not certification claims or a record of customer deployments.