PROBLEM SET 1 A rigid bar AB is hinged to a vertical wall and supported horizontally by a tie bar CD as shown in the figure, The tie bar has a cross sectional area A=0.10in² and its allowable stress in tension is 20,000 psi. Find the safe value of the magnitude of the load P and the corresponding vertical deflection AB of point B. The tie-bar has a modulus of elasticity of E=30x106 psi. P B C 4ft D A 3ft

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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.