Structural Analysis
The thickness of the rectangular plate for the cap or base of a solid round steel columns, is calculated from the formula t = √[(9W/16 fbct) × D/(D -d)] where ‘d’ is

The diameter of the top
The diameter of the base
The dimension of the base
The reduced diameter of the column

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Structural Analysis
Pick up the correct statement applicable to cased columns.

All of these
The surface and edges of the steel column should be provided a concrete cover not less than 50 mm
Single I-beam or channels back with or without flange plates may be used
Single I-beam or channels back with or without flange plates may be used

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