When your proposed development is located on steep slopes and other potential landslide areas, Slope Stability Assessment is essential.
A Landslide, or less often known as Landslip, is defined as the movement of a mass of rock, earth or debris down a slope. Gravity is the major driving force for a landslide to occur. However there are other factors affecting slope stability that produce specific conditions that make a slope prone to failure. such as; heavy rainfall, earthquake, cut & fill earthworks and etc.
Almost every landslide has multiple causes. Landslide occurs when forces acting down-slope (shear stress) exceed the strength of the materials (shear strength) that compose the slope. Causes of instability include factors that increase the shear stress and factors that contribute to low or reduced shear strength. Landslides can be initiated in slopes by rainfall, snowmelt, changes in ground water level, stream erosion, earthquakes, volcanic activity, disturbance by human activities (cut & fill earthworks), or any combination of these factors.
OB Geotechnics will develop the appropriate geotechnical constitutive model for your site and carry out slope stability analysis to insure that your proposed development will not be affected by landslide.