Direct shear strength testing is a widely used method in Bangladesh to determine the shear resistance of soils, especially for sandy and clayey soils found across the country. This test measures the maximum shear stress a soil can withstand before failure, providing essential parameters like cohesion and internal friction angle. In Bangladesh, direct shear tests are crucial for the design of foundations, retaining walls, slopes, and embankments, particularly in flood-prone and soft soil regions where stability is a major concern.
