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A hollow concrete column has a rectangular cross-section with an external breadth of 300mm and an external depth of 600mm.The internal breadth is 240mm and the internal depth is 520mm.The compressive resistance of the concrete is 200 N/mm2. If the effective height of the concrete column is 2.8m, calculate:

(i) The least radius of gyration
(ii) The slenderness ratio
(iii) The maximum axial load that the column can carry

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The problem related to Physics and it discusses about calculating least radius of gyration, slenderness ratio and maximum axial load that a hollow concrete column can carry.

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