To limit the probability that the live load due to use and occupancy, which is used for the structural design, will not take into account the maximum expected concentration of weight due to people and objects in a local area of floor or roof, which could lead to structural failure, which could lead to harm to persons.
To expand the application of Article 4.1.5.2. to the determination of concentrated loads for occupancies not listed in Table 4.1.5.9.