Methods of test for soils, Part 39: Direct shear test for soils containing gravel, Section 2: In-situ shear test
IS 2720 Part 39 Section 2 (1979) specifies the procedure for conducting in-situ direct shear tests on soils containing gravel and cobblestones to determine their shear strength parameters. It provides detailed methods for sample preparation, loading, measurement, and result interpretation, ensuring reliable assessment of soil shear resistance under field conditions. This standard is essential for geotechnical engineers and researchers involved in foundation design and soil stability analysis where coarse-grained soils are encountered.
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Overview
What This Standard Covers
IS 2720 Part 39 Section 2 (1979) specifies the procedure for conducting in-situ direct shear tests on soils containing gravel and cobblestones to determine their shear strength parameters. It provides detailed methods for sample preparation, loading, measurement, and result interpretation, ensuring reliable assessment of soil shear resistance under field conditions. This standard is essential for geotechnical engineers and researchers involved in foundation design and soil stability analysis where coarse-grained soils are encountered.
Audience
Who Uses This Standard
Geotechnical Engineers
Soil Testing Laboratory Technicians
Foundation Design Engineers
Civil Engineers
Research Scientists in Soil Mechanics
Construction Quality Control Engineers
Infrastructure Project Consultants
Contents
Key Topics Covered
✓In-situ direct shear test methodology
✓Testing soils containing gravel and cobblestones
✓Sample preparation using steel shear boxes
✓Application of normal and shear loads
✓Use of hydraulic jacks and loading equipment
✓Measurement of shear force and displacement
✓Recording and interpreting load-displacement data
✓Calculation of shear strength parameters: cohesion and angle of shearing resistance
✓Test conditions including moisture content considerations
✓Graphical representation of shear stress vs normal stress
✓Equipment specifications and setup
✓Pro forma for test data recording and reporting
Structure
Table of Contents
1Scope▼
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2Apparatus and Equipment▼
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3Sample Preparation and Installation▼
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4Application of Normal Load▼
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5Application of Shear Load▼
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6Calculation and Reporting of Results▼
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Appendix APro Forma for Recording In-Situ Test Results▼
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Frequently Asked
Popular Questions About IS 2720
?What is the recommended procedure for preparing soil samples containing gravel for the in-situ direct shear test?▼
Detailed answer not available.
?How is the normal load applied and controlled during the test according to IS 2720 Part 39 Section 2?▼
Detailed answer not available.
?What equipment is specified for applying shear force and measuring displacement in this test?▼
Detailed answer not available.
?How are the shear strength parameters such as cohesion and angle of shearing resistance calculated from test data?▼
Detailed answer not available.
?What considerations are given for moisture content and soaking conditions during testing of soils with fines?▼
Detailed answer not available.
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