Digest 444 is in three parts. Part 1 examines the durability of steel in concrete. With Part 2 on investigation and assessment, and Part 3 on protection and remedial work, it sets out the basic principles of these processes for all those concerned with the design and maintenance of durable structures: owners, tenants on repairing leases, architects, surveyors, engineers, material scientists and contractors. It also examines existing standards of construction and the lessons learned from the investigation of cases of corrosion in concrete.

This part of the Digest, Part 2, provides concise guidance on the format for investigations of corrosion of steel in concrete, the techniques employed and how this can lead to a prognosis for the future performance of existing reinforced concrete structures.

Digests 263, 264 and 265 are now withdrawn.