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  1. Pickup columns or planted columns are structural cols supported on transfer slabs or beams (which you are referring as pickup beams i think). For seismic design you have to overdesign collector elements like transfer beams or slabs by omega factor. Issues with pickup cols is loads in them depend on stiffness of slabs/beams supporting them. If supports are flexible they are literally just hanging threads from slabs above carrying little or no load at all, you cannot just manually transfer loads to them by distributary area. Another thing is to check deflection at upper and below slabs as well as punching on both slabs. Make sure the transfer slab has sufficient shear strength. Another issue might be consteuction sequence and long term deflections due to these columns. Also make sure you check for irregularity clauses of seismic code.
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