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2. A built-up (welded) shape consists of two 3/4-in by 16-in flanges and a 3/4-in by 50-inch web. If the yield strength of the steel is 65 ksi what is the nominal strength of this shape based on flange local buckling? For width to thickness ratio limits for welded shapes, refer to table B4.1b in Chapter B of the AlSC Specs, Design Requirements.
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