Standards for Establishing Places for Manufacturing, Storing, Processing Public Hazardous Substances and Flammable Pressurized Gases, and Regulations on Safety Control of such Places Article 26
If an indoor storage place for the storage of high flash point materials is located in a warehouse of more than two storeys, its location, construction and equipment shall meet the requirements set forth in Subparagraphs 3, 10 to 13 of Article 21; Subparagraphs 1, 2 and 4 of Article 22; and Paragraph 1 of the preceding article. Besides, the walls, beams, pillars, floors and stairs of its warehouse shall be constructed of non-flammable materials; and, for exterior walls that present risks of fire spreading, the walls shall be of fireproof construction and no opening other than the access shall be provided thereto.