According to the elastic theory, the vertical stress induced by a flexible line load length has an intensity of "q" units/length on the surface of a semi- infinite soil mass, this can be estimated by the expression: Ap = 0.637 q/N where: N = z|1+ r = horizontal distance of the point from the line load z = depth of the point at which stress is induced A masonry wall weighing 9 kN per lineal meter is carried by a wall footing 0.60 m wide. a) Evaluate the bearing pressure exerted by the footing onto the supporting soil b) Evaluate the stress in the soil caused by the load depth equal to twice its width c) Evaluate the stress at a depth of 2 m and a horizontal distance of 3 m from the line of the load

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Methods to Determine Vertical Stress

The load applied to the soil is transferred to the underground. The presence of water at soil pores and solid grains above the soil are the primary components that are responsible for the effective load transfer. Due to the load acting, the internal component of the soil or the underground formations undergoes deformations or a tectonic shift. The amount of deformation depends upon the amount of load acting on the soil surface, which indeed, depends on the weight of everything present above the soil. Due to this, the underground soil element develops internal stresses which try to resist the tectonic changes.