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414.2.6 Hazardous Materials Above the Third Floor in Laboratories in Group B, E, and I-2 Occupancies
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Control areas containing laboratories located above the third floor in Group B, E, or I-2 occupancies may be exempt from the provisions in Sections 414.2.1.through 414.2.4.if all of the following conditions are met:
- Buildings containing the laboratories are equipped throughout with automatic sprinkler protection installed in accordance with Section 903.3.1.1;
- Control areas containing laboratories located above the third floor are separated from each other and other portions of the building by a fire barrier having a fire-resistance rating of not less than two hours;
- The maximum amount of hazardous materials in storage and in use in control areas containing laboratories does not exceed ten percent of the maximum allowable quantities listed in Tables 307.1(1) and 307.1(2).with all increases allowed in the footnotes of those tables; and
- The maximum number of control areas containing laboratories shall not exceed 5 per floor.