Entries, Exits, and Aisle Width

The main emergency egress from the laboratory shall have a minimum door width of 36 inches to facilitate departure in the event of an emergency.

24 CCR 2 1003.3.1.3a1.


Laboratories having a floor area of 200 square feet (18.6 m2) or more need two separate exits. All portions of the laboratory must be within 75 feet of an exit.


24 CCR 2 1007.4.1 (for H occupancies)


At least 5 feet of clear egress shall be provided.  Casework shall not impede emergency access to an exit. Placement of other furniture (chairs, stools, etc.) and equipment (refrigerators, incubators, etc.) shall not impede exiting.


UC Practice


The space between adjacent workstations and laboratory benches should be 5 feet or greater to provide ease of access. In a teaching laboratory, the desired spacing is 6 feet. Bench spacing shall be considered and included in specifications and plans.


ADA 42 USC 12111 9(A), 12183

NFPA 45, Chapters 2 and 3


Spaces between benches, cabinets, and equipment shall be accessible for cleaning and to allow for servicing of equipment.


Laboratory furnishings should have smooth, nonporous surfaces to resist absorbing liquids, and to decrease vulnerability to the harsh effects of disinfectants. Furniture shall not be positioned in a manner that makes it difficult to clean spilled liquids or to conduct routine maintenance.


UC Practice

NIH Biosafety in Microbiological and Biomedical Laboratories, BSL 2, D.4

NIH Guidelines for Research Involving Recombinant DNA Molecules, App. GII-B-4-c


The laboratory doors are to be automatically self-closing.

The self-closing laboratory doors are to be able to be opened with a minimum of effort as to allow access and egress for individuals with physical limitations. Maximum unlatching force shall not exceed 15 pounds.


24 CCR 2, Chapter 10

Prudent Practices in the Laboratory, Section 5.C

24 CCR 9 (CFC) 1007.4.37


2016 CFC 1010.1.10.1


All exit and emergency doors serving hazardous occupancies shall swing in the direction of exit travel, regardless of the occupant load, and shall be equipped with panic hardware.


24 CCR 2, Chapter 10

Prudent Practices in the Laboratory, Section 5.C

24 CCR 9 (CFC) 1007.4.4, 1007.4.5