Fig. 2: Weighing balance
The balance of 1 kg capacity, sensitive to 0.1 g.
For any soil Cohesion (C) and Angle of Internal Friction (Ø) are two important engineering properties, which indicate the shear strength of soil. These two parameters are required for design of slopes, calculation bearing capacity of any strata, calculation of consolidation parameters and in many other analyses. Direct shear test is used to predict these parameters quickly, especially in cohesionless soils.
Loading Frame, Weights, Proving Ring, Micrometer Dial Gauge, Sample Trimmer or Core Cutter, Stop Watch, Balance, Spatula, Straight Edge, Shear box grid plates, porous stones, base plates, loading pad and water jacket shall conform to IS : 11229-1985.
(a) Upper and lower parts of shear box coupled together with two pins
(b) Grid plates - 2 pairs
(c) Stone plates
(d) 4 Base plate
(e) Top plate
(f) Loading pad, and
The balance of 1 kg capacity, sensitive to 0.1 g.
IS 2720(Part 13):1986 Methods of test for soils: Direct shear test. Reaffirmed- 2016.
Date and Time | Vertical Dial Reading | Vertical Dial Difference | Thickness of Specimen |
---|---|---|---|
1 | |||
2 | |||
3 | |||
4 |
Date and Time | Displacement Dial Reading | Displacement,δ | Area Correction | Corrected Area | Stress Dial Reading | Shear Force | Shear Stress | Vertical Dial Reading | Vertical Dial Difference | Thickness of Specimen | |
---|---|---|---|---|---|---|---|---|---|---|---|
1 | |||||||||||
2 | |||||||||||
3 | |||||||||||
4 |
Summary of Results
Test No. | Normal Stress | Shear Stress at Failure | Shear Displacement at Failure | Initial Water Content | Final Water Content | Remarks | |
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1 | |||||||
2 | |||||||
3 | |||||||
4 |