Section 453 — GROUP L [SFM] — 2025 California Building Code (Title 24, Part 2)

453.1 Scope. ¶

453.1 Scope. The provisions of this section shall apply to buildings or structures, or portions thereof, containing one or more Group L laboratory suites as defined in Section 202. The provisions of this section are optional and may apply to buildings or structures. See Section 304 for Group B Laboratories. 453.1.1 Technical report. The enforcing agency may require a technical opinion and report to identify and develop methods of protection from the hazards presented by the hazardous materials. A qualified person, firm or corporation, approved by the enforcing agency, shall prepare the…

provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use

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453.2 Definitions. The following terms are defined in Chapter 2: ¶

453.2 Definitions. The following terms are defined in Chapter 2: LABORATORY SUITE. [F] LIQUID TIGHT FLOOR.

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453.3 Laboratory suite requirements. ¶

453.3 Laboratory suite requirements. 453.3.1 The gross floor area of an individual laboratory suite shall not exceed 10,000 square feet (929 m [2] ). 453.3.2 An individual laboratory suite shall not serve more than a single tenant. Exception: An individual laboratory suite shall have a responsible party or department for all hazardous materials within a suite.

provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance

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453.4 Construction. ¶

453.4 Construction. 453.4.1 Separation of laboratory suites. 453.4.1.1 Laboratory suites shall be separated from other occupancies in accordance with Table 508.4. 453.4.1.2 Laboratory suites shall be separated from other laboratory suites by a fire barrier having a fire-resistance rating of not less than 1-hour. 453.4.1.3 Laboratory suites shall be separated from control areas by a minimum 2-hour fire-resistance rating in accordance with Sections 707 and 711. Exception: Laboratory suites shall be separated from control areas by a minimum 1-hour fire-resistance rating on floor levels below the…

provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use

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453.5 Fire protection systems. See Chapter 9. ¶

453.5 Fire protection systems. See Chapter 9.

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453.6 Means of egress. ¶

453.6 Means of egress. 453.6.1 Access to exits. Every room of a laboratory suite containing hazardous materials and having a floor area of 500 square feet (19 m2) or more shall have access to not less than two separate exits or exit-access doorways in accordance with Section 1006.2. 453.6.2 Door swing. All exit and exit-access doors serving areas with hazardous materials shall swing in the direction of exit travel, regardless of the occupant load served. 453.6.3 Panic hardware. Exit and exit access doors from areas with hazardous materials shall not be provided with a latch or lock unless it…

provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking

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453.7 Hazardous materials. ¶

453.7 Hazardous materials. 453.7.1 Multiple hazards. When a hazardous material has multiple hazards, all hazards shall be addressed and controlled in accor- dance with the provisions of this code and the California Fire Code. on Jul 18, 2025 11:14 AM (CDT) THEREUNDER. SPECIAL DETAILED REQUIREMENTS BASED ON OCCUPANCY AND USE 453.7.2 Percentage of maximum allowable quantities. The percentage of the maximum allowable quantity of hazardous materi- als per laboratory suite permitted for each story level within a building shall be in accordance with Table 453.7.2.1. TABLE 453.7.2.1—HAZARDOUS…

provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use

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