Situation 2. W 27 x 178 Properties of Section: Weight = 265.4 kg/m Area = 33,742 mm² Depth = 706.4 mm Web thickness = 18.4 mm Flange width = 357.8 mm Flange thickness = 30.2 mm I; = 94.49 mm The beam is simply supported at its end. I - 2,909,458 x 10ª mmª S=8,237.4 x 10ª mm² Ix = 293.64 mm Iy = 231,008 x 10ª mmª S, 1,291.3 x 10 mm² Iy- 82.74 mm F,-250 MPa %3D a) Determine the allowable bending stress of the beam over an unsupported length of 4m. b) Determine the allowable bending stress of the beam over an unsupported length of 8m. c) Determine the allowable bending stress of the beam over an unsupported length of 10m. d) Determine the allowable bending stress of the beam over an unsupported length of 12m.

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Introduction to Engineering Design

Students are often confused with engineering and design. The term engineering design has two words with different meanings, engineering, and design. The term engineering implies applications of laws and principles of science to design and analyze physical structures and components. In civil engineering, students apply the concept of physics and chemistry to design and build structures and buildings. In engineering disciplines, the term design means determining the dimensions, loads, and associated influences on the component due to the applied loads such as stresses and deformations. The estimation of such parameters is crucial to make the component or structure foolproof.