A short rectangular post supports a compressive load of P = 175 kN as shown. A top view of the post showing the location where load P is applied to the top of the post is also shown. Determine the vertical normal stress at corner d of the post. P 150 mm b 150 mm 100 mm 30 mm d - 50 mm Top view of post. -13.02 MPa O -6.66 MPa -10.99 MPa -8.62 MPa O -9.33 MPa

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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.