To limit the probability that walls forming part of the Seismic Force Resisting System will not be continuous from their top to the foundation and will not contain an in-plane or out-of-plane discontinuity (irregularity Types 4 and 5 in Table 4.1.8.6.) in areas where strong ground motions affect structures of moderate to long periods in particular, which could lead to the Seismic Force Resisting System being unable to function effectively during strong earthquake motions, which could lead to structural failure, which could lead to harm to persons.