Within individual dwelling and sleeping units in Groups R-2 and R-3, where the building is equipped throughout with an automatic sprinkler system installed in accordance with Section 903.3.1.1, 903.3.1.2 or 903.3.1.3, sleeping rooms in basements shall not be required to have emergency escape and rescue openings provided that the basement has one of the following: Emergency escape and rescue openings shall have a minimum net clear opening of 5.7 square feet (0.53 m2). The minimum dimension measured in the direction of travel shall equal to the width of the stairway, but need not exceed 48” where the stairway has a straight run. Exception: Demarcation lines shall not extend in front of exit discharge doors that lead out of an exit and through which occupants must travel to complete the exit path. The capacity, in inches, of means of egress stairways shall be calculated by multiplying the occupant load served by such stairways by a means of egress capacity factor of 0.3 inch (7.6 mm) per occupant. Calculate code sheet portions referencing this topic. Exception: Landing length in the direction of travel in Groups R-3 and U and within individual units of Group R-2 need not exceed 36 inches (914 mm). Openings in interior exit stairways and ramps other than unprotected exterior openings shall be limited to those required for exit access to the enclosure from normally occupied spaces and for egress from the enclosure. Aisle accessways serving arrangements of seating at tables or counters shall comply with the capacity requirements of Section 1005.1 but shall not have less than 12 inches (305 mm) of width plus 1/2 inch (12.7 mm) of width for each additional 1 foot (305 mm), or fraction thereof, beyond 12 feet (3658 mm) of aisle accessway length measured from the center of the seat farthest from an aisle. A door is permitted to open at the top step of an interior, 1.2. Exception: The minimum width of 1 inch (25 mm) shall not apply to outlining stripes listed in accordance with UL 1994. emergency voice/alarm communication system, Required Plumbing Fixtures - Section 2902, Chapter 3 Occupancy Classification and Use, Chapter 4 Special Detailed Requirements Based on Occupancy and Use, Chapter 5 General Building Heights and Areas, Chapter 7 Fire and Smoke Protection Features, Chapter 9 Fire Protection and Life Safety Systems, 1003.7 Elevators, Escalators and Moving Walks, 1004.2.1 Intervening Spaces or Accessory Areas, 1005.3 Required Capacity Based on Occupant Load, 1005.5 Distribution of Minimum Width and Required Capacity, 1006 Number of Exits and Exit Access Doorways, 1006.2.1 Egress Based on Occupant Load and Common Path of Egress Travel Distance, 1006.2.1.1 Three or More Exits or Exit Access Doorways, 1006.2.2.1 Boiler, Incinerator and Furnace Rooms, 1006.3 Egress From Stories or Occupied Roofs, 1007 Exit and Exit Access Doorway Configuration, 1007.1.1 Two Exits or Exit Access Doorways, 1007.1.2 Three or More Exits or Exit Access Doorways, 1007.1.3 Remoteness of Exit Access Stairways or Ramps, 1007.1.3.1 Three or More Exit Access Stairways or Ramps, 1008.2.1 Illumination Level Under Normal Power, 1008.3.5 Illumination Level Under Emergency Power, 1009.1 Accessible Means of Egress Required, 1009.7 Exterior Areas for Assisted Rescue, 1010.1.4.3 Special Purpose Horizontal Sliding, Accordion or Folding Doors, 1010.1.4.4 Locking Arrangements in Educational Occupancies, 1010.1.9.7 Controlled Egress Doors in Groups I-1 and I-2, 1010.1.9.8.1 Delayed Egress Locking System, 1010.1.9.9 Sensor Release of Electrically Locked Egress Doors, 1010.1.9.10 Door Hardware Release of Electrically Locked Egress Doors, 1010.1.9.11 Locking Arrangements in Buildings Within Correctional Facilities, 1010.1.9.12.1 Stairway Side Door Locking Arrangement, 1011.7.3 Enclosures Under Interior Stairways, 1011.7.4 Enclosures Under Exterior Stairways, 1011.14.1 Handrails of Alternating Tread Devices, 1011.14.2 Treads of Alternating Tread Devices, 1012.10.2 Extended Floor or Ground Surface, 1013.4 Raised Character and Braille Exit Signs, 1015.6 Mechanical Equipment, Systems and Devices, 1017.2.1 Exterior Egress Balcony Increase, 1018.5 Aisles in Other Than Assembly Spaces and Groups B and M, 1019.3 Occupancies Other Than Groups I-2 and I-3, 1023.7 Interior Exit Stairway and Ramp Exterior Walls, 1023.10 Elevator Lobby Identification Signs, 1025.2.4.1 Floor-Mounted Demarcation Lines, 1025.2.4.2 Wall-Mounted Demarcation Lines, 1025.4 Self-Luminous and Photoluminescent, 1027.6 Exterior Exit Stairway and Ramp Protection, 1029.1.1.1 Spaces Under Grandstands and Bleachers, 1029.5 Interior Balcony and Gallery Means of Egress, 1029.6.2 Smoke-Protected Assembly Seating, 1029.9.7 Stairways Connecting to Stepped Aisles, 1029.9.8 Stairways Connecting to Vomitories, 1029.10.1 Transitions to Stairways That Maintain Stepped Aisle Riser and Tread Dimensions, 1029.10.2 Transitions to Stairways That Do Not Maintain Stepped Aisle Riser and Tread Dimensions, 1029.10.2.1 Stairways and Stepped Aisles in a Straight Run, 1029.10.2.2 Stairways That Change Direction From Stepped Aisles, 1029.11.1 Stepped Aisles That Change Direction at Vomitories, 1029.11.2 Stepped Aisle Transitions at the Top of Vomitories, 1029.13.1.1 Aisle Accessway Capacity and Width for Seating at Tables, 1029.13.1.2 Seating at Table Aisle Accessway Length, 1029.13.2 Clear Width of Aisle Accessways Serving Seating in Rows, 1029.14.2.3 Tread Contrasting Marking Stripe, 1029.17.3 Sightline-Constrained Guard Heights, 1030.1.1 Operational Constraints and Opening Control Devices, Chapter 15 Roof Assemblies and Rooftop Structures, Chapter 25 Gypsum Board, Gypsum Panel Products and Plaster, Chapter 30 Elevators and Conveying Systems, Chapter 32 Encroachments Into the Public Right-Of-Way, Chapter 33 Safeguards During Construction, Appendix C Group U—Agricultural Buildings, Appendix E Supplementary Accessibility Requirements, Appendix L Earthquake Recording Instrumentation, Appendix M Tsunami-Generated Flood Hazard, [F] 1002.2 Fire Safety and Evacuation Plans, Section 1006 Number of Exits and Exit Access Doorways, Section 1007 Exit and Exit Access Doorway Configuration, Section 1008 Means of Egress Illumination, Section 1019 Exit Access Stairways and Ramps, Section 1023 Interior Exit Stairways and Ramps, Section 1025 Luminous Egress Path Markings, Section 1027 Exterior Exit Stairways and Ramps, Accessory storage areas, mechanical equipment room, Bowling centers, allow 5 persons for each lane including 15 feet of runway, and for additional areas, Access to and utilization of mechanical, plumbing or electrical systems or equipment, The clear height of floor levels in vehicular and pedestrian traffic areas of public and private parking garages in accordance with. Obstacles shall include, but are not limited to, standpipes, hose cabinets, wall projections and restricted height areas. The area shall be of a size to accommodate not less than 5 square feet (0.46 m2) for each person. Vestibules and areas on the level of discharge used for, Public restrooms with an area greater than 300 square feet (27.87 m, Exterior areas for assisted rescue complying with, The clear width of 48 inches (1219 mm) between, Two-way communication systems are not required at the landing serving each elevator or bank of elevators where the two-way communication system is provided within, Two-way communication systems are not required on floors provided with, Two-way communication systems are not required at the landings serving only service elevators that are not designated as part of the. There is a power failure or power is removed to the device holding the door wings in position. Operable windows where the openings will not allow a 4-inch-diameter (102 mm) sphere to pass through the opening when the window is in its largest opened position. Exception: Where stairways connect stepped aisles to cross aisles or concourses, stairway landings are not required at the transition between stairways and stepped aisles constructed in accordance with Section 1029. The required clear width of the aisle accessway shall be measured perpendicular to the elements and merchandise within the merchandise pad. 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. Capture and share institutional knowledge within your team and company. Don't miss relevant code. The maximum exit access travel distance shall be 400 feet (122 m) in Group F-1 or S-1 occupancies where all of the following conditions are met: Exit access travel distance shall be measured from the most remote point of each room, area or space along the natural and unobstructed path of horizontal and vertical egress travel to the entrance to an exit. Items 1 through 4 shall not apply to doors to areas occupied by persons who, because of clinical needs, require restraint or containment as part of the function of a psychiatric treatment area. Code Calculators automatically generates a detailed list of requirements. The door shall be capable of being unlocked from outside the room with a key or other, The door shall be openable from within the room in accordance with, Modifications shall not be made to listed, 1.1. Notice: Now when … Permanent ladders shall be constructed in accordance with Section 306.5 of the International Mechanical Code. 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. The minimum stairway clear width at and below the handrail shall be 26 inches (660 mm). 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. Exception: For smoke-protected or open-air assembly seating there shall be not more than 40 seats between the two aisles and the minimum clear width shall be 12 inches (305 mm) plus 0.3 inch (7.6 mm) for each additional seat. On the egress side of each security access turnstile lane. A single exit or access to a single exit shall be permitted from any story or occupied roof where one of the following conditions exists: Individual single-story or multistory dwelling units shall be permitted to have a single exit or access to a single exit from the dwelling unit provided that both of the following criteria are met: Where two exits, exit access doorways, exit access stairways or ramps, or any combination thereof, are required from any portion of the exit access, they shall be placed a distance apart equal to not less than one-half of the length of the maximum overall diagonal dimension of the building or area to be served measured in a straight line between them. The fire-resistance-rated exterior wall construction shall extend horizontally not less than 10 feet (3048 mm) beyond the landing on either side of the landing or equivalent fire-resistance-rated construction is permitted to extend out perpendicular to the exterior wall not less than 4 feet (1220 mm) on the side of the landing. 2018 IBC (December 2017) 1 . The rise to the next alternating tread surface shall not exceed 8 inches (203 mm). 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. ICC Digital Codes is the largest provider of model codes, custom codes and standards used worldwide to construct safe, sustainable, affordable and resilient structures. Each tread shall have a depth of not less than 63/4 inches (171 mm) at the walkline. Each required accessible means of egress shall be continuous to a public way and shall consist of one or more of the following components: In buildings where a required accessible floor is four or more stories above or below a level of exit discharge, not less than one required accessible means of egress shall be an elevator complying with Section 1009.4. Forces shall be applied to the latch side of the door. Based on the 2018 International Building Code®(IBC ) Description. All portions of machinery rooms shall be within 150 feet (45 720 mm) of an exit or exit access doorway. Quickly locate sections across your jurisdiction. Any variation of risers within a flight of stairs should not be more than ⅜ inch of tolerance. The force required to operate the door shall not exceed 30 pounds (133 N) to set the door in motion and 15 pounds (67 N) to close the door or open it to the minimum required width. Stairway identification signs shall comply with all of the following requirements: A smokeproof enclosure shall terminate at an exit discharge or a public way. Separation from the interior of the building is not required for occupancies, other than those in Group, Separation from the interior of the building is not required where the, 2.1. Where exit sign illumination is required by Section 1013.3, the signs shall be illuminated. The Illinois Attorney General shall have the authority to enforce the Code in accordance with the EBA. Exception: Aisles and aisle accessways in rooms or spaces used for assembly purposes complying with Section 1029. Landings shall have a length measured in the direction of travel of not less than 44 inches (1118 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. A mezzanine is an intermediate level between the floor and ceiling of any story. Each area of refuge shall be separated from the remainder of the story by a smoke barrier complying with Section 709 or a horizontal exit complying with Section 1026. The doors shall be arranged to unlock from a manual unlocking device located 40 inches to 48 inches (1016 mm to 1219 mm) vertically above the floor and within 5 feet (1524 mm) of the secured doors. The portion of the total permitted exit access travel distance from the entrance to the vomitory or concourse to one of the following shall not exceed 200 feet (60 960 mm): In facilities with open-air assembly seating of Type III, IV or V construction, the total exit access travel distance to one of the following shall not exceed 400 feet (122 m): The common path of egress travel shall not exceed 30 feet (9144 mm) from any seat to a point where an occupant has a choice of two paths of egress travel to two exits. Thresholds at doorways shall not exceed 3/4 inch (19.1 mm) in height above the finished floor or landing for sliding doors serving dwelling units or 1/2 inch (12.7 mm) above the finished floor or landing for other doors. 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. Where there is an aisle between the seating and the perimeter, the guard height shall be measured in accordance with Section 1015.3. The area shall be permanently maintained and identified as a safe dispersal area. The 2018 Connecticut State Building Code is based on the International Code Council’s widely-adopted 2015 International Codes and references the ICC A117.1-2009 standard for accessibility, and applies to projects with permit applications filed from October 1, 2018. For doors that swing in the direction of egress, the sign shall read: PUSH UNTIL ALARM SOUNDS. Winder treads are not permitted in means of egress stairways except within a dwelling unit. Where changes in elevation of less than 12 inches (305 mm) exist in the means of egress, sloped surfaces shall be used. Code calculators may not be available. Landings shall be level except for exterior landings, which are permitted to have a slope not to exceed 0.25 unit vertical in 12 units horizontal (2-percent slope). Locks and latches shall be permitted to prevent operation of doors where an elevator lobby is separated from the remainder of the floor by partitions and doors; and where the elevator lobby does not provide access to the required. 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. Unpack the code through illustrations and descriptions. 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. Where seating rows have 14 or fewer seats, the minimum clear aisle accessway width shall be not less than 12 inches (305 mm) measured as the clear horizontal distance from the back of the row ahead and the nearest projection of the row behind. In Group B and M occupancies, the minimum clear aisle width shall be determined by Section 1005.1 for the occupant load served, but shall be not less than that required for corridors by Section 1020.2. Riser height nonuniformity shall be limited to the extent necessitated by changes in the gradient of the adjoining seating area to maintain adequate sightlines. These inputs help surface the applicable codes and requirements. See differences between code years or jurisdictions. Exception: Membrane penetrations shall be permitted on the outside of the exit passageway. The minimum fire-resistance rating of the separation shall be 2 hours. Handrails and handrail extensions shall be marked with a solid and continuous stripe having a minimum width of 1 inch (25 mm). Stairways shall not be less than 36 inches (914 mm) in clear width at all points above the permitted handrail height and below the required headroom height PHOTO 1. 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). Building stairs under the International Building Code provides measurements that have existed since early Roman times.The Roman architect, Vitruvius devised a guide for the Roman Emperor Caesar Augustus outlining desirable dimensions for building steps. DOOR CAN BE OPENED IN 15  SECONDS. A flight of stairs shall not have a vertical rise greater than 12 feet (3658 mm) between floor levels or landings. Stair riser heights shall be 7 inches (178 mm) maximum and 4 inches (102 mm) minimum. Exception: In Group I-3 occupancies, exit access stairways or ramps constructed in accordance with Section 408 are not required to be enclosed. Elevators shall not open into interior exit stairways and ramps. A depth of not less than 30 inches (762 mm) where the treads on the descending side of the transition have lesser depth. 6 E145-15 IBC 1030.1 Emergency Escape and Rescue Openings New Exception Decrease Exception for Means of Egress. Exception: Thirty-six inches (914 mm) where the stepped aisles serve less than 50 seats. The fire-resistance rating shall be not less than that required for the interior exit stairway and ramp. The required capacity of corridors shall be determined as specified in Section 1005.1, but the minimum width shall be not less than that specified in Table 1020.2. • The first I-Codes were published in 2000 and are updated on a three-year cycle, the most recent being 2018. This section has been amended at the state or city level. (Amd) 101.2 Scope. The exit discharge shall not reenter a building. 6.3. A sign shall be provided on the door and shall be located above and within 12 inches (305 mm) of the door exit hardware: Exception: Where approved, in Group I occupancies, the installation of a sign is not required where care recipients who because of clinical needs require restraint or containment as part of the function of the treatment area. 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