Soil and rock description in engineering practice / David Norbury.

Includes bibliographical references and index.

Print version record.

Preface ; Definitions ; 1 Introduction ; 1.1 What are we describing and why?; 1.2 Description compared with classification; 1.3 Communication in description; 1.4 Soil meets rock ; 1.5 Health and Safety in description ; 2 History of Description in Codification ; 2.1 Prior to 1970 ; 2.2 The period 1970-1981; 2.3 The period 1981-1999 and the first BS 5930 ; 2.4 Rock weathering; 2.5 1999 and the second BS 5930 ; 2.6 The period since 1999 ; 2.7 Multiple usage of defined terms; 2.7.1 Clay and silt terminology; 2.7.2 Secondary constituent terms; 2.7.3 Loose and dense

2.7.4 Compactness of silt2.7.5 Rock strength ; 2.7.6 Rock weathering; 2.7.7 Comparison of descriptive technology ; 3 Systematic Description ; 3.1 Standard word order ; 3.2 Standard word order in US practice ; 3.3 The multiple sentence approach ; 4 Description of Materials ; 4.1 Principal soil and rock types ; 4.2 Size fractions ; 4.3 Description procedure using flow chart; 4.4 Very coarse soils; 4.5 Coarse soils; 4.6 Particle shape ; 4.7 The coarse soil/fine soil boundary ; 4.8 Fine soils ; 4.9 Classification of plasticity of fine soils; 4.10 The soil/rock boundary; 4.11 Rock naming

4.11.1 General naming of rocks 4.11.2 Description of coal ; 4.11.3 Naming of carbonate sediments ; 4.11.4 Naming of volcaniclastic sediments ; 4.12 Grain size in rocks ; 5 Relative Density and Strength ; 5.1 Relative density in coarse soils; 5.2 Consistency of fine soils; 5.3 Strength: shear or unconfined ; 6 Structure, Fabric and Texture; 6.1 Structure; 6.2 Fabric ; 6.3 Texture ; 7 Colour ; 8 Secondary and Tertiary Fractions ; 8.1 Secondary fractions; 8.1.1 Secondary fractions in very coarse soils; 8.1.2 Very coarse particles as a secondary fraction; 8.1.3 Secondary fractions in coarse soils

8.1.4 Fine soil as a secondary constituent 8.1.5 Secondary fractions in fine soils; 8.1.6 Multiple secondary fractions; 8.2 Tertiary fractions; 8.3 Description of widely graded soils ; 8.4 Description and classification of particle size grading ; 8.5 Other information ; 9 Geological Unit; 10 Weathering ; 10.1 Weathering of soils; 10.2 Rock weathering; 10.3 Approach 1: description of weathering; 10.4 Approaches 2 and 3: classifications for homogeneous stronger rocks ; 10.5 Approach 4: classification for hetrogeneous weather rocks ; 10.6 Material specific weathering schemes

10.7 Approach 5: special cases 10.7.1 Chalk ; 10.7.2 Karstic limestone ; 10.7.3 Tropical weathering ; 11 Discontinuity Logging ; 11.1 Types of discontinuity ; 11.2 Discontinuity description ; 11.3 Orientation; 11.4 Spacing ; 11.5 Persistence and termination; 11.6 Surface form ; 11.7 Wall strength; 11.8 Aperture and infilling; 11.9 Seepage ; 11.10 Discontinuity sets ; 12 Discontinuity State Recording ; 12.1 Total core recovery ; 12.2 Solid core recovery ; 12.3 Rock quality designation; 12.4 Fracture spacing ; 13 Low Density Soils; 13.1 Organic soils; 13.1.1 Topsoil; 13.1.2 Peat

This is a revised and updated version of the highly successful first edition. It continues to provide invaluable practical guidance in carrying out engineering geological logging of soil and rock samples and exposures in the field.

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