TRH12: rehabilitation investigation
Investigation evidence before treatment selection
What this reference covers
Rehabilitation requires an investigation appropriate to the question and the pavement. A summary measurement should remain connected to its source observations.
Interpretation and limits
This reference does not assert universal IRI or rut-depth treatment bands. Verify the selected method, source edition and project interpretation policy.
Follow the evidence
Record the exact source edition and the applicable project requirements. Educational summaries do not establish product or project compliance.
Reference
Department of Transport (n.d.) Roads: Engineering Standard Guidelines and Manuals. TRH12 catalogue entry. Original source (Accessed: 5 September 2026).
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