A beam of wide-flange shape, W 8 x 28, has the cross section shown in the figure. -tw h The dimensions are b = 6.54 in.,

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A Beam Of Wide Flange Shape W 8 X 28 Has The Cross Section Shown In The Figure Tw H The Dimensions Are B 6 54 In 1 (94.14 KiB) Viewed 13 times

A beam of wide-flange shape, W 8 x 28, has the cross section shown in the figure. -tw h The dimensions are b = 6.54 in., h = 8.06 in., tw = 0.285 in., and t = 0.465 in. The loads on the beam produce a shear force V = 5.1 kips at the cross section under consideration. (Assume that the cross section is thin-walled. Enter the magnitude of maximum shear stresses in ksi. Round all your answers to at least four decimal places.) (a) Use centerline dimensions to calculate the maximum shear stress max in the web of the beam. 2.34465 ksi (b) Use the more exact analysis of the section 'Shear Stresses in the Webs of Beams with Flanges' in the chapter 'Stresses in Beams (Basic Topics)' to calculate the maximum shear stress in the web of the beam. (Calculate the moment of inertia using only the given dimensions.) 2.2764 X Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. ksi Compare it with the stress obtained in part (a). max, b = max, a