Transcription of GUIDELINES FOR CORE LOGGING
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GUIDELINES FOR CORE LOGGING
Chapter 10 GUIDELINES FORCORE LOGGINGT hese GUIDELINES incorporate procedures and methodsused by many field offices and are appropriate for"standard" engineering geology/geotechnical log forms,computerized log forms, and many of the modified logforms used by various Bureau of Reclamation(Reclamation) chapter describes the basic methods for engineeringgeology core LOGGING and provides examples andinstructions pertaining to format, descriptive data, andtechniques; procedures for working with drillers to obtainthe best data; caring for recovered core; and water testingin drill holes. The chapter also provides a reference forexperienced loggers to improve their techniques and trainothers.
Detailed microscopic or laboratory testing to define rock type or mineralogy generally are necessary only in special cases. Empirical design methods, such as the Rock Mass Rating System Geomechanics Classification (RMR) and Q-system Classification (Q), are commonly used for design of under-ground structures and are coming into common use for
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