Computer Study—comparison of cantilever and portal methods with an exact analysis. (a) Analyze the two-story frame in Figure P13.19 by the portal method. (b) Repeat the analysis using the cantilever method. Assume the area of the interior columns is twice the area of the exterior columns. Assume the baseplates connecting all columns to the foundations can be treated as a pin support. (c) Compare the results with an exact analysis using a computer software. Use E = 200 GPa for all members; for beams and interior columns use A = 10,000 mm2 and I = 50 × 106 mm4; for exterior columns use A = 5000 mm2 and I = 25 × 106 mm4.
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