A wooden beam is fabricated by nailing together three boards as shown. The boards have dimensionsof b1 = 14 in., d1 = 2.2 in., b2 = 2.2 in., d2 = 13 in., b3 = 7 in., and d3 = 2.2 in.%3D(a) Determine the distance from the bottom edge of the section to the centroid.(b) Determine the moment of inertia of the section about the z axis.(c) Determine the maximum shear stress in the cross section if the internal shear force is V = 480 lb.Assume that the shear force Vacts in the y direction.(d) Consider nail B that connects the bottom flange to the beam web. If the nails used at B can provide150 Ib of horizontal resistance (in the x direction), determine the maximum nail spacing s (in the xdirection) that can be used for nail B. Assume V = 480 lb.(e) If a bending moment applied about the z axis produces a tension normal stress of ox = 510 psi atthe bottom of the cross section, determine the compression normal stress produced at the top of thecross section.b1y|Nail Adid2b2dzNail Bb3

Area A1=b1×d1=14×2.2=30.8 in2C.G of area A1 from top y1=d12=1.1 in⇒Area A2=b2×d2=2.2×13=28.6…

A wooden beam is fabricated by nailing together three boards as shown. The boards have dimensions of b1 = 14 in., d1 = 2.2 in., b2 = 2.2 in., d2 = 13 in., b3 = 7 in., and d3 = 2.2 in. (a) Determine the distance from the bottom edge of the section to the centroid. (b) Determine the moment of inertia of the section about the z axis. (c) Determine the maximum shear stress in the cross section if the internal shear force is V = 480 lb. Assume that the shear force Vacts in the y direction.

A wooden beam is fabricated by nailing together three boards as shown. The boards have dimensions of b1 = 14 in., d1 = 2.2 in., b2 = 2.2 in., d2 = 13 in., b3 = 7 in., and d3 = 2.2 in. (a) Determine the distance from the bottom edge of the section to the centroid. (b) Determine the moment of inertia of the section about the z axis. (c) Determine the maximum shear stress in the cross section if the internal shear force is V = 480 lb. Assume that the shear force Vacts in the y direction.

Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)

5th Edition

ISBN:9781305084766

Author:Saeed Moaveni

Publisher:Saeed Moaveni

Chapter12: Electric Current And Related Variables In Engineering

Section12.2: Electrical Circuits And Components

Problem 6BYG

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