To exempt certain storage situations from the application of the spacing requirements stated in Subsections 3.3.3. and 3.3.4. as referenced in Sentence 3.3.2.3.(1), if a barrier is provided.
This is to limit the probability that a fire will spread from one individual storage area to another, which could lead to the spread of fire to adjacent buildings or facilities, which could lead to damage to adjacent buildings or facilities.