the best way for finding the best parameters in comparing of two model is studding recommendation for design of models, if you read the main parameter which is important for design of composite and RC columns you can find the best parameters.
i suggest you to search this keyword:recommendation for composite columns design and recommendation for RC columns design
the best way for finding the best parameters in comparing of two model is studding recommendation for design of models, if you read the main parameter which is important for design of composite and RC columns you can find the best parameters.
i suggest you to search this keyword:recommendation for composite columns design and recommendation for RC columns design
The answer will depend on the building design code that is used. For example IBC 2006 uses spectral accelerations at periods 0.2 s and 1.0 s while Eurocode 8 uses peak ground acceleration to represent the seismic demand.
Generally speaking, circular column shapes are frequently more advantageous. Stiffness and strength are the same in all directions and hoops/spirals are more effective iin confining the concrete core than are rectangular transverse ties. It is possible, of course, to use a circular arrangement of bars with spirals in a rectangular shape. But the corners are somewhat wasted in such a condition.