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Select the lightest section to carry a compressive load of 200 kips dead load and 625 kips live load. The effective length KL is 25

Select the lightest section to carry a compressive load of 200 kips dead load and 625 kips live load. The effective length KL is 25 feet. Use AISC Table 4-1 for (a) Gr. 50 steel, (b) Gr. 65 steel, and (c) Gr. 70 steel

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