A beam with varying load is shown at the figure below. If the beam properties are given, what is the final stress at bottom of the beam at midspan where total losses of the prestressing force is 28% (MPa) Properties: Beam width = 257 mm Beam height = 395 mm %3D Varying load = 20.23 kN/m %3D Span of the beam = 9 m Prestressing force 347 kN eccentricity %3! = 103 mm

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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.