1) Two C6x13 sections are laced together with its flanges outstanding. 10 X Properties of one channel are: Designation w (kg/m) A (mm²) C6x13 19.44 2471 d (mm) 152.4 tw (mm) 11.1 bf (mm) 54.8 tf (mm) 1.4.Calculate the radius of gyration about the x-axis. 1.5.Calculate the radius of gyration about the y-axis. 18.7 x-bar (mm) 13.06 INAbout x 10- mm") 7242 INAbouty ( x 10³ mm) 437 1.1.How much in mm should the channels be placed back to back if the section must be equally strong as beam in both axes. 1.2.Calculate the section modulus about y-axis in x10³ mm³. 1.3.Calculate the section modulus about x-axis in x10³ mm³.

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Mechanics of Solids

It is the study of the behavior of solid materials, their characteristics under various circumstances such as variation in external forces, temperature, and other internal factors. It is one of most important study in the field of engineering science, especially chemistry and mechanical engineering. In rigid body, the idealization of the solid body in which deformation is neglected. Deformation is known as the force acting on the solid state system which exerts change in its shape of the body but it continues to be at rest or in a uniform motion but it cannot accelerate. But those solid systems do have elasticity, compressibility and can be bent. This field is very vast since there are wide range of materials around us.