Design of Steel Structure
Shape factor is a property which depends

only on the ultimate stress of the material
only on the yield stress of the material
both on the yield stress and ultimate stress of material
only on the geometry of the section

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Design of Steel Structure
When the axis of load lies in the plane of rivet group, then the most heavily loaded rivet will be the one which (where, Fa is the load shared by each rivet due to axial load and Fm is the shearing load due to moment in any rivet.)

is at the maximum distance from CG of the rivet group
gives the minimum angle between the two forces Fa and Fm
is at the minimum distance from CG of the rivet group
gives the maximum angle between the two forces Fa and Fm

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