Methods of test for soils, Part 39: Direct shear test for soils containing gravel, Section 1: Laboratory test 1977 Edition
The 1977 edition of IS 2720 Part 39 Section 1 outlines the laboratory procedure to evaluate the shear strength of soils containing gravel larger than 4.75 mm by means of the direct shear test. This guideline is crucial for geotechnical professionals and soil laboratories to obtain precise shear resistance data for gravelly soils, facilitating dependable design of foundations and earth structures.
The 1977 edition of IS 2720 Part 39 Section 1 outlines the laboratory procedure to evaluate the shear strength of soils containing gravel larger than 4.75 mm by means of the direct shear test. This guideline is crucial for geotechnical professionals and soil laboratories to obtain precise shear resistance data for gravelly soils, facilitating dependable design of foundations and earth structures.
Audience
Who Uses This Standard
Geotechnical engineering professionals
Technicians in soil testing laboratories
Civil engineering practitioners
Foundation design experts
Construction quality assurance engineers
Researchers specializing in soil mechanics
Managers overseeing infrastructure development projects
Contents
Key Topics Covered
✓Application and limits for gravelly soil testing
✓Specifications and design criteria of the shear box apparatus
✓Steps for preparing and sizing test specimens
✓Requirements for loading plates and loading mechanisms
✓Techniques for measuring shear displacement and normal stress
✓Conducting tests under both natural and saturated moisture states
✓Utilizing micrometer dial gauges for precise displacement readings
✓Methods for calculating and documenting shear strength values
✓Approach to handling disturbed soil samples
✓Standards for equipment calibration and measurement accuracy
✓Formats for recording test results
✓Revisions and alignment with international standards
Structure
Table of Contents
1Introduction and Scope
2Equipment and Instrumentation
3Specimen Preparation Procedures
4Testing Methodology
5Data Analysis and Reporting
Appendix ATemplate for Shear Test Data Recording
Frequently Asked
Popular Questions About IS 2720
?Which gravel particle sizes are covered by this standard?▼
Specific details are not provided.
?What are the design and specification requirements for the shear box?▼
Specific details are not provided.
?How is the soil sample to be prepared and conditioned before testing?▼
Specific details are not provided.
?What devices are used for applying load and measuring displacement?▼
Specific details are not provided.
?In what manner should the shear strength parameters be calculated and documented?▼
Specific details are not provided.
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