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Measurements of Beams

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1) Determine the location of the centroid yc, measured from the bottom, for a beam with the cross section shown in the figure.

A) 0.5 in
B) 2.5 in
C) 3.0 in
D) 5.0 in

2) Determine the maximum flexural stress produced by a resisting moment Mr of +5000 ft*lb if the beam has the cross section shown in the following figure. Note: I = 136 in.**4.

A) 183 psi C
B) 1.32 ksi T
C) 2.21 ksi T
D) 2.21 ksi C

3) A timber beam is simply supported and carries a uniformly distributed load w of 360 lb/ft over its entire 18-ft span. If the beam has the cross section shown in the following figure, determine the maximum horizontal shearing stress in the beam. Note: yc = 2.333 in., INA = 108.0 in.**4, and QNA = 26.89 in.**3.

A) 80.7 psi
B) 101 psi
C) 202 psi
D) 404 psi

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Solution Summary

This solution provides step-by-step calculations for equations involving measurements of beams.

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