01
Phase 1
Understand
Surveys, data, uses, constraints, risks and success criteria are clarified before any proposal.
Required evidenceDefined need and criteria
13Engineering & Infrastructure
Approach
A rigorous, collaborative method focused on real performance.
A/01
Design principle
Data • Interfaces • Evidence
Chain of responsibility
Every stage prepares the evidence required by the next.
The method does not separate studies, works and operation. It organises their continuity, interfaces and success criteria.
02
Phase 2
Compare
Scenarios are assessed through performance, whole-life cost, maintainability, risk and durability.
Required evidenceCompared scenarios
03
Phase 3
Design
The selected scenario becomes calculations, drawings, specifications, phasing and acceptance criteria.
Required evidenceVerifiable specifications
04
Phase 4
Deliver and verify
Supervision, testing and commissioning preserve continuity between design and operation.
Required evidenceTests and deviations recorded
05
Phase 5
Support
Maintenance, monitoring, training and continuous improvement sustain performance.
Required evidenceMonitored performance
Governance
Decisions, responsibilities and controls remain clear.
Data
Sources, quality, assumptions and limitations are recorded.
Interfaces
Boundaries between packages and stakeholders are explicitly managed.
Risks
Technical, human, economic and operational risks are prioritised.
Evidence
Each key requirement receives an inspection, test or indicator.
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