Design of Steel Structure
According to IS Specifications, the maximum pitch of rivets in compression is (where t is thickness of thinnest outside plate or angle)

lesser of 200 mm and 161
lesser of 300 mm and 32 t
lesser of 200 mm and 12 t
lesser of 3 00 mm and 24 t

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Design of Steel Structure
In a gusseted base, when the end of the column is machined for complete bearing on the base plate, then the axial load is assumed to be transferred to base plate

50% by direct bearing and 50% through fastenings
75% by direct bearing and 25% through fastenings
Fully through fastenings
Fully by direct bearing

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