1-2 for selected values of t listed in the design aids.
(1-11), where the -factor is obtained from Fig. Express your answer in psi to three significant figures. Flexure 1 through Flexure 4 contains Kn values computed by Eq. Include the sign of the stress in your answer. Part C - Maximum bending stress Determine the absolute maximum bending stress in the section if it is subjected to an internal moment of 535 ft lb around the z-axis. View Available Hint(s) PHA ? I= Value Units Submit What is the moment of inertia of the section for bending around the z-axis? Express your answer to three significant figures and include the appropriate units. Part B - Calculate the moment of inertia Once the position of the centroid is known, the moment of inertia can be calculated. View Available Hint(s) ? UA 7 M Value Units What is the distance T' from the bottom of the section to the centroid? (Figure 3) Express your answer with appropriate units to three significant figures. Figure < 1 of 3 Part A - Locate the centroid Since the widths of the two flanges are not the same, the centroid is not readily apparent. The beam is subjected to a moment so that the internal moment on the section is about the z-axis. The neutral axis of the section nasses through the centroid My In Consider an l-beam section with unequal flanges (Figure 2), where w1 = 9 in., h = 6.2 in. It can also be written in terms of the vertical distance from the neutral axis, y, O = each equation, I is the moment of inertia of the cross- sectional area about the same neutral axis. Transcribed image text: The Flexure Formula 1 of 9 > Mc, where c is the perpendicular distance 11 Review Mc omax = from the neutral axis to the farthest point in the section.
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