BASE PLATE STEEL COLUMN BASE PLATES DESIGN | DETAILING | S11
The following assumptions are made during analysis and design: Column forces are transferred to the baseplate and concrete though an effective area, determined by the column geometry and the plate stiffeners (if any). A plane is used to represent the strain across the effective area. The equilibrium point is determined iteratively to balance the internal forces with the applied axial load and biaxial bending. For each individual bolt, the module uses the plane of strain to determine its state of tension or compression. Torsion transfers to the bolts as shear.
On completing the analysis, the module displays the resulting design forces and factors of safety for each of the load cases.
Design checks include: Concrete bearing stress Bolt tension or compression force Bolt shear force Plate bending stress Welds
For a better understanding of the analysis of the module, the strain diagram shows the effective bearing area used as well as the plane of strain used to find equilibrium.
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