To exempt exterior walls from the temperature rise limitations required by the standard tests referred to in Article 9.10.3.1. if certain conditions are met [such walls have a limiting distance of not less than 1.2 m] and due allowance is made for the effects of heat radiation [e.g. Sentence 3.2.3.1.(9)] so as to limit the probability that fire will spread from one building to an adjacent building.
To expand the application of Sentence 3.2.3.1.(9) to Part 9 buildings.