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Q: An axially loaded column, not machined for full bearing, the fastenings connection the column to the base plates through gussets are to be designed for
  • A. 100% of the load on the column
  • B. 50% of the load on the column
  • C. 25% of the load on the column
  • D. Respective erection conditions only
Correct Answer: Option A - In a gusseted base with a machined end of the column for complete bearing on the base plate, the axial load is assumed to be transferred 50% by direct bearing and 50% through fastenings. • When the end of the column and gusset plate is not machined for full bearing i.e. partially machined, in that case, it is assumed that connection to the base plate is design for all forces acting on the plate.
A. In a gusseted base with a machined end of the column for complete bearing on the base plate, the axial load is assumed to be transferred 50% by direct bearing and 50% through fastenings. • When the end of the column and gusset plate is not machined for full bearing i.e. partially machined, in that case, it is assumed that connection to the base plate is design for all forces acting on the plate.

Explanations:

In a gusseted base with a machined end of the column for complete bearing on the base plate, the axial load is assumed to be transferred 50% by direct bearing and 50% through fastenings. • When the end of the column and gusset plate is not machined for full bearing i.e. partially machined, in that case, it is assumed that connection to the base plate is design for all forces acting on the plate.