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A prismatic beam with span L= 3ft is simply supported at points A and B. The beam is supporting a uniform load

with q = 160lb/in. The cross-section of the beam is a solid rectangle with width b = 1in and height h= 4in.


Determine: (a) The normal stress (σ C) and shear stress (τC) at point C located 8 inches left of support B and 1 in. below the top of the beam; (b) The principle stress orientation (θ) with respect to the longitudinal axis of an element located at point C for the state of stress determine in Part a; (c) What is the magnitude of the shear stress in the principle orientation? Screen Shot 2020-01-23 at 3.30.41 PM.png

Screen Shot 2020-01-23 at 3.30.41 PM.png

Top Answer

TOTAL LOAD =160312=5760 Reaction at support =5760/2=2880 Shear force at support =2280 shear force at point C=8/18 ... View the full answer

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