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Column Splice Locations

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Section 1921.7.2.2 of the 1997 UBC applies to columns that do not resist
seismic loads, with axial load between 0.1 f'c and 0.3Po, in which the
compatibility moments due to Rw*delta do not exceed the design moment.
By reference to 1921.4.3, it appears that this section requires that the
lap splices in such columns be located in the middle 1/3, a significant
departure from previous codes.  Is my interpretation correct?  Can
anyone explain why this provision is not triggered for axial loads less
than 0.1f'c (1921.7.2.1) and for members with axial loads exceeding
0.3Po (1921.7.2.3)?