1 . The AIGA provides a number of standard graphics for signs in the US(www.aiga.org/symbol-signs). Download and print the male and female symbols. Find their centroids and moments of inertia with units of percentage of height and width, not in.or mm.
2 . Consider a Wsection (an Ishaped steel beam where the horizontal parts are the"flanges" and the vertical part is the "web"). If we assume a total height of 12 inches, a total width of 8 inches, and a uniform thickness of 1/2", a. Find the centroid and moments of inertia assuming square corners. b. Find the centroid and moments of inertia assuming some of the corners are rounded, similar to Fig A3 on p. 789( Mechanics of materials Hibbeler 9th edition) . For the bottom of the top flange tips and the top of the bottom flange tips, assume a 1/4 inch radius. For the interior corners where the web meets the flanges, assume a 3/8 inch radius. c. In your opinion, is the difference in the Ix values from a) and b) significant?
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