In terms of mezzanines, the code does not have any additional exiting requirements other than the typical requirements found in Chapter 10. A mezzanine shall be open to the room in which it is located, except for walls not more than 42 inches in height. Can a Mezzanine be Enclosed?

The maximum travel distance to one exit cannot exceed 150 feet in buildings not sprinklered or 200 feet in buildings protected by a sprinkler system. The mezzanine shall be open to the room where it’s located. The mezzanine design must meet all building code requirements.

However, once portions of or all of the mezzanine is enclosed, or the mezzanine exceeds one-third the area of the room in which it is located, life-safety problems such as occupants not being aware of an emergency or finding a safe exit route from the mezzanine become important.

The number of exits or exit access doorways required within the means of egress system shall comply with the provisions of Section 1006.2 for spaces, including mezzanines, and Section 1006.3 for stories or occupied roofs.

Aug 17, 2022 · Small mezzanine floors that serve fewer than 49 occupants and are below 250 square feet in size only require a single exit stairway in order to be IBC compliant. Mezzanines of a larger capacity and size will need at least two industrial egress stairs.

Sep 11, 2020 · The mezzanine egress requirements are found in IBC Section 10 Means of Egress. Under section 1006, mezzanines must be provided by a means of egress system. The number of exits required is determined by the occupant load and common path of …

Oct 16, 2009 · The IBC requires 2 exits from a mezzanine when the occupant load exceeds 49 (or lower in some occupancies). The NFPA section you quoted starts at 50+, so the 50th person is the difference. Also note the IBC CPET limitations.

Jun 17, 2011 · The exits are placed a distance apart of one third the overall diagonal of the area being served. The occupant load only warrants one exit. However, because the mezzanine is enclosed and not open, a second exit is required.

Exception: Exit access stairways providing means of egress from mezzanines are permitted as part of an accessible means of egress. 1009.3.2 Stairway width. Stairways shall have a clear width of 48 inches ... Where exit sign illumination is required by …

mezzanines served by an enclosed exit stairway or elevator equipped with standby power. On floors above or below the level of exit discharge, accessible means of egress must lead to exit stairways, horizontal exits, or to elevators equipped with standby power.