Methods of test for soils, Part 39: Direct shear test for soils containing gravel, Section 1: Laboratory test
IS 2720 Part 39 Section 1 (1977) specifies the laboratory method for determining the shear strength of soils containing gravel particles larger than 4.75 mm using the direct shear test. This standard is essential for geotechnical engineers and soil testing laboratories to accurately assess the shear resistance of gravelly soils under controlled conditions, ensuring reliable data for foundation and earthwork design.
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Overview
What This Standard Covers
IS 2720 Part 39 Section 1 (1977) specifies the laboratory method for determining the shear strength of soils containing gravel particles larger than 4.75 mm using the direct shear test. This standard is essential for geotechnical engineers and soil testing laboratories to accurately assess the shear resistance of gravelly soils under controlled conditions, ensuring reliable data for foundation and earthwork design.
Audience
Who Uses This Standard
Geotechnical Engineers
Soil Testing Laboratory Technicians
Civil Engineers
Foundation Design Specialists
Construction Quality Control Engineers
Research Scholars in Soil Mechanics
Infrastructure Project Managers
Contents
Key Topics Covered
✓Scope and applicability for soils containing gravel
✓Shear box design and specifications
✓Specimen preparation and dimensions
✓Loading plate and loading device requirements
✓Measurement of shear displacement and normal load
✓Test procedure at natural and saturated moisture conditions
✓Use of micrometer dial gauges for displacement measurement
✓Calculation and reporting of shear strength parameters
✓Handling of disturbed soil specimens
✓Equipment calibration and accuracy standards
✓Test result recording proforma
✓Amendments and international coordination
Structure
Table of Contents
1Scope▼
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2Apparatus and Equipment▼
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3Preparation of Specimen▼
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4Test Procedure▼
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5Calculation and Report▼
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Appendix AProforma for Recording Shear Stage▼
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Frequently Asked
Popular Questions About IS 2720
?What size of gravel particles does this standard apply to?▼
Detailed answer not available.
?What are the specifications for the shear box used in the test?▼
Detailed answer not available.
?How should the soil specimen be prepared and conditioned before testing?▼
Detailed answer not available.
?What loading and displacement measurement devices are required?▼
Detailed answer not available.
?How are the shear strength parameters calculated and reported?▼
Detailed answer not available.
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