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What is Rock Quality Designation (RQD) Explained about?

This document summarizes the background and recommended procedure for measuring the Rock Quality Designation (RQD) index. The RQD was originally developed in the 1960s as a means to qualitatively describe rock quality for tunneling projects. It has since been widely adopted as a standard parameter for describing rock quality in borehole logs and several rock mass classification systems. The document reviews the history of the RQD

Author

Andres Felipe Mira

Language

EN