Every exit sign and directional exit sign shall have plainly legible letters not less than 6 inches (152 mm) high with the principal strokes of the letters not less than 3/4 inch (19.1 mm) wide. 3. The fire-resistance rating shall be not less than that required for the interior exit stairway and ramp. Exception: A side-hinged swinging door is not required at security access turnstiles that comply with Section 1010.3.2. Exterior egress balconies shall be separated from the interior of the building by walls and opening protectives as required for corridors. Where an egress court serving a building or portion thereof is less than 10 feet (3048 mm) in width, the egress court walls shall have not less than 1-hour fire-resistance-rated construction for a distance of 10 feet (3048 mm) above the floor of the egress court. The width of stairways shall be determined as specified in section 1005.1, but such width shall not be less than 44 inches (1118mm). Protruding objects are permitted to extend below the minimum ceiling height required by Section 1003.2 where a minimum headroom of 80 inches (2032 mm) is provided over any circulation paths, including walks, corridors, aisles and passageways. Accessible spaces shall be provided with not less than one accessible means of egress. Directions for the use of the two-way communication system, instructions for summoning assistance via the two-way communication system and written identification of the location shall be posted adjacent to the two-way communication system. For seats with folding tablet arms, row spacing shall be determined with the tablet arm in the used position. Exception: Thirty-six inches (914 mm) where the stepped aisles serve less than 50 seats. Finish floor surfaces shall be securely attached. The area shall be permanently maintained and identified as a safe dispersal area. Exception: Handrails are permitted to project into the required width of stepped aisles and ramped aisles in accordance with Section 1014.8. The door assembly power supply shall be electrically supervised. Elevators shall not open into an exit passageway. Stairways that are part of the means of egress for the exterior area for assisted rescue shall provide a minimum clear width of 48 inches (1220 mm) between handrails. A single exit or access to a single exit shall be permitted in accordance with Section 1006.3.3. The exit passageway shall be separated from the remainder of the building by 2-hour fire barriers constructed in accordance with Section 707 or horizontal assemblies constructed in accordance with Section 711, or both. Handrails shall return to a wall, guard or the walking surface or shall be continuous to the handrail of an adjacent flight of stairs or ramp run. 2018 IBC (December 2017) 1 . Low-energy power-operated sliding doors and low-energy power-operated folding doors shall comply with BHMA A156.38. Exception: Where tables or counters are served by fixed seats, the width of the aisle or aisle accessway shall be measured from the back of the seat. The extensions of handrails shall be in the same direction of the flights of stairs at stairways and the ramp runs at ramps. Your selected jurisdiction and code year has limited Interior exit stairway and ramp opening protectives shall be in accordance with the requirements of Section 716. IBC 1015.2: Guards shall be located along open sided walking surfaces that are located more than 30” measured vertically to the floor or grade below at any point. The minimum clear opening width shall not apply to the doors for nonaccessible toilet stalls. Other than for the egress components designed for convergence in accordance with, Where an area under consideration contains multiple functions having different, Where a building contains two or more occupancies, the, For SI: 1 foot = 304.8 mm, 1 square foot = 0.0929 m, Every room or space that is an assembly occupancy shall have the, The minimum width, in inches (mm), of any, The required capacity, in inches (mm), of the, The minimum width or required capacity of the, Protruding objects shall comply with the applicable requirements of, The elevator shall meet the emergency operation and signaling device requirements of Section 2.27 of ASME A17.1/CSA B44. Participants will be presented with those changes that will most impact their use of the code when they adopt these I-Codes. Where an intended function is not listed in Table 1004.5, the building official shall establish a function based on a listed function that most nearly resembles the intended function. Stair riser heights shall be 7 inches (178 mm) maximum and 4 inches (102 mm) minimum. A clear understanding of the identified requirements allows the code user to apply the IBC in specific situations and helps to build an understanding of the intent of the code when asked to make a judgment on code … Where an interior exit stairway or ramp is extended to an exit discharge or a public way by an exit passageway, the exit passageway shall comply with Section 1023.3.1. Exception: The means of egress from a smaller tenant space shall not be prohibited from passing through a larger adjoining tenant space where such rooms or spaces of the smaller tenant occupy less than 10 percent of the area of the larger tenant space through which they pass; are the same or similar occupancy group; a discernible path of egress travel to an exit is provided; and the means of egress into the adjoining space is not subject to locking from the egress side. Where a landing serves an occupant load of 50 or more, doors in any position shall not reduce the landing to less than one-half its required width. The leading edge of such a barrier shall be located 27 inches (686 mm) maximum above the finished floor. Where the seatboards are adjacent to the perimeter, guard height shall be 42 inches (1067 mm) high minimum, measured from the seatboard. Rectangular tread depths shall be 11 inches (279 mm) minimum measured horizontally between the vertical planes of the foremost projection of adjacent treads and at a right angle to the tread's nosing. Operable windows where the openings are provided with window fall prevention devices that comply with ASTM F2090. Exception: Access doors or gates in barrier walls and fences protecting pools, spas and hot tubs shall be permitted to have operable parts of the latch release on self-latching devices at 54 inches (1370 mm) maximum above the finished floor or ground, provided that the self-latching devices are not also self-locking devices operated by means of a key, electronic opener or integral combination lock. Such materials shall include, but not be limited to, self-luminous materials and photoluminescent materials. Alternating tread devices shall have a minimum tread depth of 5 inches (127 mm), a minimum projected tread depth of 81/2 inches (216 mm), a minimum tread width of 7 inches (178 mm) and a maximum riser height of 91/2 inches (241 mm). The minimum height from the finished floor to the bottom of the ceiling or roof slab or deck is 24 feet (7315 mm). Access to the stairway or ramp within a smokeproof enclosure shall be by way of a vestibule or an open exterior balcony. Where serving an occupant load greater than 300, each turnstile that is not portable shall have a side-hinged swinging door that conforms to Section 1010.1 within 50 feet (15 240 mm). Throughout a story in a Group I-2 occupancy, any change in elevation in portions of the means of egress that serve nonambulatory persons shall be by means of a ramp or sloped walkway. Note that there are exceptions and that older codes and codes in some states differ. Code calculators may not be available. In facilities with smoke-protected assembly seating, the total exit access travel distance shall be not greater than 400 feet (122 m). Where changes in direction of travel occur at landings provided between ramp runs, the landing shall be 60 inches by 60 inches (1524 mm by 1524 mm) minimum. Exception: Exit access stairways providing means of egress from mezzanines are permitted as part of an accessible means of egress. Exception: Where access to a public way cannot be provided, a safe dispersal area shall be provided where all of the following are met: Spaces under grandstands or bleachers shall be separated by fire barriers complying with Section 707 and horizontal assemblies complying with Section 711 with not less than 1-hour fire-resistance-rated construction. 2. Each area of refuge shall be designed to minimize the intrusion of smoke. The 2019 OSSC includes portions of the 2018 International Fire Code (IFC). Doors serving individual dwelling units in Groups R-2 and R-3 where the following apply: Landings shall have a width not less than the width of the stairway or the door, whichever is greater. The entire area of the vestibule is separated from areas below by construction conforming to the. The door shall be capable of opening from any position to the full width of the opening in which such door is installed when a force is applied to the door on the side from which egress is made. Where means of egress doors are operated or assisted by power, the design shall be such that in the event of power failure, the door is capable of being opened manually to permit means of egress travel or closed where necessary to safeguard means of egress. Exception: Nonpublic aisles serving less than 50 people and not required to be accessible by Chapter 11 need not exceed 28 inches (711 mm) in width. A depth of not less than 22 inches (559 mm) where the treads on the descending side of the transition have greater depth. 2.3. Use of the space between the corridor ceiling and the floor or roof structure above as a return air plenum is permitted for one or more of the following conditions: Fire-resistance-rated corridors shall be continuous from the point of entry to an exit, and shall not be interrupted by intervening rooms. Exception: Access is not required by way of a vestibule or exterior balcony for stairways and ramps using the pressurization alternative complying with Section 909.20.5. The required clear width of the aisle accessway shall be measured perpendicular to the elements and merchandise within the merchandise pad. Where basements contain one or more sleeping rooms, emergency escape and rescue openings shall be required in each sleeping room, but shall not be required in adjoining areas of the basement. Exception: The minimum width of 1 inch (25 mm) shall not apply to markings listed in accordance with UL 1994. Exception: Membrane penetrations shall be permitted on the outside of the exit passageway. The path of egress travel to exits and within exits shall be marked by readily visible exit signs to clearly indicate the direction of egress travel in cases where the exit or the path of egress travel is not immediately visible to the occupants. The tread shall be projected such that the total of the tread depth plus the, The slope measured perpendicular to the direction of travel of a, The minimum width and required capacity of a. Landings shall have a slope not steeper than one unit vertical in 48 units horizontal (2-percent slope) in any direction. A readily visible durable sign is posted on the egress side on or adjacent to the door stating: THIS DOOR TO REMAIN UNLOCKED WHEN THIS SPACE IS OCCUPIED. The width of the egress court shall be not less than the required capacity. Ticket booths less than 100 square feet (9.29 m, Other accessory use areas 1,000 square feet (92.9 m, Not less than 0.005 inch (0.127 mm) of additional. In the event of power supply failure in rooms and spaces that require two or more means of egress, an emergency electrical system shall automatically illuminate all of the following areas: In the event of power supply failure in buildings that require two or more means of egress, an emergency electrical system shall automatically illuminate all of the following areas: In the event of power supply failure, an emergency electrical system shall automatically illuminate all of the following areas: Accessible means of egress shall comply with this section. Exception: Alternating tread devices used as an element of a means of egress in buildings from a mezzanine area not more than 250 square feet (23 m2) in area that serves not more than five occupants shall have a minimum tread depth of 3 inches (76 mm) with a minimum projected tread depth of 101/2 inches (267 mm). The leading edge of landings shall be marked with a stripe consistent with the dimensional requirements for steps. Exception: The radius restriction shall not apply to curved stairways in Group R-3 and within individual dwelling units in Group R-2. Permanent ladders shall not serve as a part of the means of egress from occupied spaces within a building. Stairways shall have a headroom clearance of not less than 80 inches (2032 mm) measured vertically from a line connecting the edge of the nosings. Not less than one refuge area exit shall lead directly to the exterior or to an interior exit stairway or ramp. For doors that swing in the direction of egress, the sign shall read: PUSH UNTIL ALARM SOUNDS. It shall be unlawful to alter a building or structure in a manner that will reduce the number of exits or the minimum width or required capacity of the means of egress to less than required by this code. An emergency voice/alarm system is not required for outdoor bleacher -type seating with an occupant load of 300 or less. functionality. Alternating tread devices shall comply with Section 1011.14. (Amd) 101.2 Scope. Upon loss of power to the turnstile or any part of the access control system that secures the physical barrier. 2.3. Approved luminous egress path markings delineating the exit path shall be provided in high-rise buildings of Group A, B, E, I-1, M or R-1 occupancies in accordance with this section. Door openings to storage closets less than 10 square feet (0.93 m, The width of door leaves in revolving doors that comply with, Doors to walk-in freezers and coolers less than 1,000 square feet (93 m. The minimum clear opening width shall not apply to doors for nonaccessible shower or sauna compartments. 1025.2.1 Steps. 2018 RESIDENTIAL STAIR GUIDE SECTION R311.7 STAIRWAYS R311.7.1 Width. A reliable and up-to-date source of codes. The total number of seats specified shall be those within the space exposed to the same smoke-protected environment. The maximum unlatching force shall not exceed 15 pounds (67 N). Riser height nonuniformity shall be limited to the extent necessitated by changes in the gradient of the adjoining seating area to maintain adequate sightlines. In Group I-2 and I-3 occupancies, floor openings between stories containing exit access stairways or ramps are required to be enclosed with a shaft enclosure constructed in accordance with Section 713. Not more than 50 percent of the number and minimum width or required capacity of interior exit stairways and ramps is permitted to egress through areas on the level of discharge provided that all of the following conditions are met: Not more than 50 percent of the number and minimum width or required capacity of the interior exit stairways and ramps is permitted to egress through a vestibule provided that all of the following conditions are met: 2.3. Exception: Handrails are permitted to protrude 41/2 inches (114 mm) from the wall or guard. Exterior walls separating the exterior area of assisted rescue from the interior of the building shall have a minimum fire-resistance rating of 1 hour, rated for exposure to fire from the inside. ICC Digital Codes is the largest provider of model codes, custom codes and standards used worldwide to construct safe, sustainable, affordable and resilient structures. A mezzanine is an intermediate level between the floor and ceiling of any story. Revolving doors shall not be given credit for more than 50 percent of the minimum width or required capacity. The numbers, types and locations of exits or access to exits shall be provided in the uses described in Sections 1006.2.2.1 through 1006.2.2.6. 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