5.11-5 A box beam is constructed of four wood boards as shown in the figure part a. The webs are 200 mm × 25 mm and the flanges are 150 mm x 25 mm boards (actual dimensions), joined by screws for which the allowable load in shear is F = 1.1 kN per screw. (a) Calculate the maximum permissible longitudinal spacing smax of the screws if the shear force V is 5.3 kN. (b) Repeat part (a) if the flanges are attached to the webs using a horizontal arrangement of screws as shown in the figure part b. Flange Flange 25 mm Web 25 mm Web 200 mm 200 mm 25 mm 25 mm 25 mm 25 mm |-150 mm --| - 150 mm 25 mm 25 mm (a) (b) PROBLEM 5.11-5

5.11-5 A box beam is constructed of four wood boards as shown in the figure part a. The webs are 200 mm × 25 mm and the flanges are 150 mm x 25 mm boards (actual dimensions), joined by screws for which the allowable load in shear is F = 1.1 kN per screw. (a) Calculate the maximum permissible longitudinal spacing smax of the screws if the shear force V is 5.3 kN. (b) Repeat part (a) if the flanges are attached to the webs using a horizontal arrangement of screws as shown in the figure part b. Flange Flange 25 mm Web 25 mm Web 200 mm 200 mm 25 mm 25 mm 25 mm 25 mm |-150 mm --| - 150 mm 25 mm 25 mm (a) (b) PROBLEM 5.11-5

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter5: Stresses In Beams (basic Topics)

Section: Chapter Questions

Problem 5.11.5P: A box beam is constructed of four wood boards as shown in the figure part a. The webs are S in, x 1...

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