Stresses in Beams Bending and Horizontal Shear Stress

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‪@MATHalino1‬ ‪@EngrHLDC‬ ‪@tingdong2263‬ ‪@EngrDeLaCruz‬ ‪@cebox‬ ‪@eboratutorials‬ ‪@engrjayc‬ ‪@KippapEducation‬ • 0:00 R-5.2 A simply supported wood beam (L=5m) with rectangular cross-section (b=200mm, h=280mm) carries a uniform load 1=9.5kN/m which includes the weight of the beam. The maximum flexural stress is approximately: • 5:17 R-5.4 A beam with an overhang is loaded by a uniform load of 3kN/m over its entire length. Moment of inertia Iz=3.36x10^6mm^4 and distances to top and bottom of the beam cross section are 20mm and 66.4mm, respectively. It is known that reaction at A and B are 4.5kN and 13.5kN, respectively. The maximum bending stress in the beam is approximately: • 23:54 R-5.6 A cantilever wood pole carries force P=300N applied at its free end, as well as its own weight (weight density = 6kN/m^3). The length of the pole is L=0.75m and the allowable bending stress is 14MPa. The required diameter of the pole is approximately: • 36:52 R-5.7 A simply supported steel beam of length L=1.5m and rectangular cross section (h=75mm, b=20mm) carries a uniform load of q=48kN/m that includes its own weight. The maximum transverse shear stress on the cross section at 0.25m from the left support is approximately: • 44:50 R-5.8 A simply supported laminated beam of length L=0.5m and square cross section weighs 4.8N. Three strips are glued together to form the beam, with the allowable shear stress in the glued joint equal to 0.3MPa. Considering also the weight of the beam, the maximum load P that can be applied at L/3 from the left support is approximately: • 57:48 R-5.9 An aluminum cantilever beam of length L=0.65m carries a distributed load, which includes its own weight, of intensity q/2 at A and q at B. The beam cross section has a width of 50mm and height of 170mm. Allowable bending stress is 95MPa and allowable shear stress is 12MPa. The permissible value of load intensity q is approximately: • 1:12:16 R-5.10 An aluminum light pole weighs 4300N and supports an arm of weight 700N, with the arm center of gravity at 1.2m left of the centroidal axis of the pole. A wind force of 1500N acts to the right at 7.5m above the base. The pole cross section at the base has an outside diameter of 235mm and thickness of 20mm. The maximum compressive stress at the base is approximately: • 1:30:48 Quiz Solution: Determine the maximum tensile and compressive stress for the beam shown. • 1:32:39 Moment of Inertia Calculator Technique

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