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The cross-section of an idealized I-section beam has overall dimensions 120 mm x 240 mm deep....

The cross-section of an idealized I-section beam has overall dimensions 120 mm x 240 mm deep. If the web and flange are both 25 mm thick, determine the second moment of area of the section. If the maximum bending stress is limited to 100 MN/m2, determine the maximum load the cross-section can support at mid-span when it is used as a beam 2.5 m long and simply supported at the ends.
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