IBC - FLS - Egress Design
(Last updated to 2018 IBC)
MEANS OF EGRESS SYSTEM - CHAPTER 10
(provide a continuous and unobstructed path of vertical and horizontal egress travel from any occupied portion of a building or structure to a public way. A means of egress consists of three separate and distinct parts - IBC definition)
THE EXIT ACCESS
(That portion of a means of egress system that leads from any occupied portion of a building or structure to an exit. - IBC definition)
Corridors (1020)
Egress Balconies (1021) - (An egress Balcony is basically an exterior corridor, like in an old hotel.)
Exit Access Stairways and ramps (1019)
Elevators when used as an accessible means of egress (1003.7 exception, 1009.4)
THE EXIT (1022)
(That portion of a means of egress system between the exit access and the exit discharge or public way. - IBC definition)
Exterior Exit Doors at the level of exit discharge (1022.2)
Interior Exit Stairways and ramps (1023)
Exit Passageways (1024)
Exterior exit stairways and ramps (1027)
Horizontal exits (1026)
THE EXIT DISCHARGE (1028)
(That portion of a means of egress system between the termination of an exit and a public way. - IBC definition)
Path from building to Public way
Egress Courts (1028.4) (A court (An open, uncovered space, unobstructed to the sky, bounded on three or more sides by exterior building walls or other enclosing devices.) or yard (An open space, other than a court, unobstructed from the ground to the sky, except where specifically provided by this code, on the lot on which a building is situated.) which provides access to a public way for one or more exits. IBC definitions)
Public Way (A street, alley or other parcel of land open to the outside air leading to a street, that has been deeded, dedicated or otherwise permanently appropriated to the public for public use and which has a clear width and height of not less than 10 feet (3048 mm). - IBC Definition)
Occupant Loads (See Code Analysis )
Means of Egress Sizing (1005)
Widths and capacities (1005.2, 1005.3)
Distribution of Min Width and Req’d Capacity (105.5)
Egress Convergence (1005.5)
Encroachment (1005.7)
Number of Exits and Exit Access Doorways (1006)
Exit and Exit Access Doorway configuration (1007)
Egress Paths (1003.2, 1003.6, 1003.7)
Check Ceiling Heights along path (1003.2)
Check Minimum Width Requirements
Corridors (Table 1020.2)
Stairs and Ramps (1011.2, 1012.5.1)
Check Exit Access Rules (1016)
Travel Distances (1017, Table 1017.2)
Areas of Refuge (1009.6.1)
Means of Egress Sizing (1005, Cumulative Occupant Loads 1004.2, Egress Convergence 1005.6)
Exiting signs (1013)
ACCESSIBLE MEANS OF EGRESS (1009)
1009.1 Accessible Means of Egress Required requires that accessible spaces must have at least one accessible means of egress or at least two accessible means of egress if more than one means of egress is required from that space.
1009.2 Continuity & Components states that accessible means of egress shall be continuous to a public way and lists the allowed components of an accessible means of egress system including.
Accessible routes complying with 1104 Accessible Route
Interior exit stairways complying with 1009.3 Stairways, 1023 Interior Exit Stairways and Ramps
Exit access stairways complying with 1009.3 Stairways, 1019.3, 1019.4
Exterior exit stairways (complying with 1009.3, 1027)
Elevators (complying with 1009.4)
Platform lifts complying with Section (complying with 1009.5)
Horizontal exits (complying with 1026)
Ramps (complying with 1012)
Areas of refuge (complying with 1009.6)
Exterior areas for assisted rescue (complying with 1009.7 serving exits at the level of exit discharge.
1009.2.1 Elevators Required - Requires at least one accessible means of egress be an accessible means of egress elevator (1009.4) where an accessible floor or occupied roof is four or more stories above or below a level of exit discharge.
ASSEMBLY EGRESS
Special Requirements & Exceptions (1029)
EMERGENCY ESCAPE & RESCUE OPENINGS -
Requirements for R-2, R-3 & R-4 Occupancies (1030)