A beam is constructed by welding two C152 X 16 channels togetner back to back and welding two C178 x channels on the top and bottom of this assembly as shown. Find thne moments of inertia of this composite shape with respect to horizontal and vertical axes through the centroid of the cross-section. Moment of inertia about a horizontal axis through the centroid: Ic. = mm4 Moment of inertia about a vertical axis through the centroid: Ic, mm4

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