5.5-4 A simply supported wood beam AB with a span length L = 4 m carries a uniform load of inten- sity q = 5.8 kN/m (see figure). (a) Calculate the maximum bending stress o max due to the load q if the beam has a rectangular cross section with width b = 140 mm and height h = 240 mm. %3D (b) Repeat part (a) but use the trapezoidal distrib- uted load shown in the figure part b.

5.5-4 A simply supported wood beam AB with a span length L = 4 m carries a uniform load of inten- sity q = 5.8 kN/m (see figure). (a) Calculate the maximum bending stress o max due to the load q if the beam has a rectangular cross section with width b = 140 mm and height h = 240 mm. %3D (b) Repeat part (a) but use the trapezoidal distrib- uted load shown in the figure part b.

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter6: Stresses In Beams (advanced Topics)

Section: Chapter Questions

Problem 6.10.3P: A propped cantilever beam of length L = 54 in. with a sliding support supports a uniform load of...

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A cantilever beam AB of length L = 6.5 ft supports a trapezoidal distributed load of peak intensity 4, and minimum intensity q/2tthat includes the weight of the beam (see figure). The beam is a steel W 12 × 14 wide-flange shape (see Table F-l(a), Appendix F). Calculate the maximum permissible load q based upon (a) an allowable bending stress eallow = 18 ksi and (b) an allowable shear stress eallow = 7,5 ksi. Note: Obtain the moment of inertia and section modulus of the beam from Table F-l(a).
A steel beam ABC is simply supported at A and fiand has an overhang BC of length L = 150 mm (see figure). The beam supports a uniform load of intensity q = 4,0 kN/m over its entire span AB and l.5g over BC. The cross section of the beam is rectangular with width h and height 2b. The allowable bending stress in the steel iso"a|]ûW = 60 MPa, and its weight density is y = 77.0 kN/m . Disregarding the weight of the beam, calculate the required width b of the rectangular cross section. Taking into account the weight of the beam, calculate the required width b.
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-1 through 5.10-6 A wide-flange beam (see figure) is subjected to a shear force V. Using the dimensions of the cross section, calculate the moment of inertia and then determine the following quantities: The maximum shear stress tinixin the web. The minimum shear stress rmin in the web. The average shear stress raver (obtained by dividing the shear force by the area of the web) and the ratio i^/t^. The shear force i^/t^ carried in the web and the ratio V^tV. Note: Disregard the fillets at the junctions of the web and flanges and determine all quantities, including the moment of inertia, by considering the cross section to consist of three rectangles. 5.10-6 Dimensions of cross section: b = 120 mm, a = 7 mm, h = 350 mm, hx= 330 mm, and K=60kN.
A propped cantilever beam of length L = 54 in. with a sliding support supports a uniform load of intensity q (see figure). The beam is made of steel {<7y = 36 ksi) and has a rectangular cross section of width/) = 4.5 in. and height h = 6.0 in. What load intensity q will produce a fully plastic condition in the beam?
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