INTERNATIONAL MANUAL FOR THE SAMPLING OF SOFT COHESIVE SOILS

1. Introduction. 2. General description. 2.1 Planning of boring and sampling. 2.1.1 Sampling methods and their selection. 2.1.2 Boring methods for sampling. 2.1.3 Planning of sampling program. 2.2 Sample quality and evaluation. 2.2.1 Sources of sample disturbance. 2.2.2 Required sample quality in relation to design parameters. 2.2.3 Quality evaluation at the site. 2.2.4 Quality evaluation in the laboratory. 3. Preparatory work for undisturbed sampling in borehole. 3.1 Borings for undistributed sampling. 3.1.1 Types of borings. 3.1.2 Boring methods and their applicability. 3.1.3 Stabilization of boreholes. 3.1.4 Cleaning of boreholes. 3.1.5 Water level in borehole. 3.2 Boring records. 4. Undistributed sampling by thin-walled samplers with fixed pistons. 4.1 Sampler types and their characteristic. 4.1.1 Hvorslev type. 4.1.2 Osterberg type. 4.1.3 NGI type. 4.1.4 Japanese type. 4.1.5 Swedish standard piston sampler. 4.1.6 L.P.C. piston core sampler. 4.2Sampling tubes. 4.2.1 Material and wall thickness. 4.2.2Diameter of sampling tube. 4.2.3 Length of sampling tube. 4.2.4 Inside clearance. 4.2.5 Edge taper angle. 4.2.6 Roundness. 4.3 Sampling procedure. 4.3.1 Sampler assembly. 4.3.2 Sampling procedure. 5. Other samplers used for undistributed sampling. 5.1 Thin-walled sampler with frees piston. 5.1.1 Sampler types and their piston. 5.1.2 Sampling procedures. 5.2 Thin-walled, open-drive sampler. 5.2.1 Sampler types and their characteristic. 5.2.2 Sampling procedures. 5.3 Foil sampler. 5.3.1 Sampler characteristic. 5.3.2 Sampling procedures. 5.3.3 Sealing and storage. 5.4 Begemann sampler. 5.4.1 Sampler characteristic. 5.4.2 Sampling procedures. 5.5 Samplers used in the USSR. 6. Handling of undistributed samples. 6.1 Sealing. 6.1.1 Wax sealing. 6.1.2 Mechanical sealing. 6.1.3 Recording. 6.2 Shipment and storage of samples. 6.3 Preparation of specimens for laboratory test. 7. Hand-carving undistributed samples from pits or trenches. 7.1 Sampling procedures. 7.1.1 Application. 7.1.2 Excavation 7.1.3 Equipment. 7.1.4 Sampling procedures. 7.2 Storage, recording and shipment. 8. Methods of distributed soil sampling. 8.1 Definition, purpose and application. 8.2 Sampling methods. 8.2.1 Augers. 8.2.2 Core boring. 8.2.3 Standard penetration test. 8.2.4 Distributed samples from pits and trenches. 8.3 Storage and recording of samples.

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