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2 cards from this section. Quick, good the night before a test.
What is the purpose of the direct shear test in soil mechanics?
Think about how we test materials for building stability.
Name the device used to conduct the direct shear test.
It’s the part that splits into two for testing.
What type of load is initially applied to the soil sample in a direct shear test?
This load is essential before any shear force is applied.
True or False: The direct shear test is used exclusively for testing clay.
Think about the types of soils we can test.
In a direct shear test, the applied normal load is 75 kPa, and at failure, the shear stress is measured at 30 kPa. Calculate the friction angle and discuss its significance for construction.
Remember how to apply trigonometric functions to determine friction angles.
Describe the impact of increasing the moisture content on the results of a direct shear test conducted on sand. Consider its implications for construction sites located on sandy soil.
Think about how wet conditions affect soil behavior under shear forces.
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