AASHTO R 27-01 (2019) PDF Download

The AASHTO R 27-01 (2019) standard provides guidance on assessing and mitigating corrosion in steel piling used in non-marine soil applications. The standard is divided into two parts: Part I focuses on identifying the environmental conditions that cause corrosion, while Part II offers procedures for assessing soil corrosivity, selecting corrosion mitigation measures for new piling installations, and evaluating the condition of existing steel piling.

In Part I, the standard explains the mechanisms of underground corrosion and provides information on the factors that contribute to corrosion in non-marine environments. This knowledge helps readers understand the controlling factors and aids in identifying potential causes of corrosion.

Part II of the standard outlines the procedures to assess soil corrosivity at a specific site and provides guidance on selecting appropriate corrosion mitigation measures for new piling installations. It also offers methods for evaluating the current condition of existing steel piling and provides guidance on whether to continue using them or reuse them in new or rehabilitated structures.

It is important to note that this standard does not replace or override testing and test methods used for assessing design parameters for piling placement or continued use. Instead, it complements those practices by offering specific guidance on corrosion assessment and mitigation.