2018 CSBC / 2018 CSFSC Part III. Chapter #10. Means of Egress. Table of Contents. Based on the 2015 IBC and the 2015 IFC.

Transcription

1 2018 CSBC / 2018 CSFSC Part III. Chapter #10. Means of Egress. Table of Contents. Based on the 2015 IBC and the 2015 IFC. October 23, 2018 Section Administration. See Section for Egress Drawing Requirements. Section 1002 Definitions. See Chapter2. Such as: Accessible Means of Egress Common Path of Travel Corridor Exit Floor Area, Gross Floor Area, Net Means of Egress Public Way. Section General Means of Egress Ceiling Height Protruding Objects Headroom Post Mounted Objects Horizontal Projections Clear Width Floor Surface Elevation Change. 12. Including Stairs with One or Two Risers Means of Egress Continuity. The required capacity of a means of egress system shall not be diminished along the path of egress travel Elevators. Accessible Means of Egress Security Device. Ct. Amd. Section Occupant Load Design Occupant Load Cumulative Occupant Loads. Intervening Spaces. Adjacent Levels Areas without fixed seating. Table Ct. Amd. Removed Exception Increased Occupant Load Posting of Occupant Load. Assembly Occupancy Fixed Seating Outdoor Areas Multiple Occupancies. Section Means of Egress Sizing General. See Means of Egress for Assembly. Section Minimum Width Based on Component Required Capacity Based on Occupant Load. 1

2 Stairways. Egress Capacity Factor of 0.3 inch per occupant. Ct. Amd Other Egress Components. Egress Capacity Factor of 0.2 inch per occupant. Ct. Amd Continuity. Capacity of means of egress required not be reduced Distribution of Egress Capacity. Loss of any one exit, not to reduce capacity below 50% of the required capacity Egress Convergence. Two Stories to an intermediate level Encroachment. Door Swing, Handrails and Protruding Objects. Section Section Number of Exits and Exit Access Doorways General. Number of Exits. Section for Spaces with one means of egress. Section for Stories with one means of egress. Ct. Amd Egress from Spaces including Mezzanines Egress based on occupant load and common path of egress travel distance. Table Spaces with One Exit or Exit Access Doorway Three or more exits or exit access doorways. Greater than 500 persons Egress based on use Boiler and Furnace Rooms. Over 500 s.f. and 400,000 BTU Refrigeration Machinery Rooms. Over 1,000 s.f Refrigerated Rooms or Spaces. Over 1,000 s.f Day Care Means of Egress. Ct. Amd Vehicular Ramps Egress from Stories or Occupied Roofs Egress Based on Occupant Load. Table Number of Exits Single Exits. Permitted from any Story. Stories with One Exit (1) Table. Stories with One Exit. R-2 Occupancy (2) Table. Stores with One Exit. Other an R-2 Occupancy Mixed Occupancies. Section Exit and Exit Access Doorway Configuration General. Exits to be separated from each other Two Exits or Exit Access Doorways. Remoteness. 1/2, 1/3 or measure along one-hour rated corridor Measurement Point Three or More Exits or Exit Access Doorways. Remoteness Remoteness of Exit Access Stairways Three or More Exit Access Stairways. Section Means of Egress Illumination. (Exit Signage. Section 1013) Means of Egress Illumination Illumination Required. When Occupied. Ct. Amd Illumination Level Under Normal Power. One Foot-candle Exit Discharge. Group I-2. Section Arrangement of Illumination. Failure of a single lamp. Ct. Amd. 2

3 Emergency Power for Illumination General. Rooms and Spaces. Aisles, Corridors and Stairways Buildings. Stairways, Exit Passageways, Vestibules and Exterior Landings. Section Rooms and Spaces. Electrical Rooms, Fire Command Centers, Fire Pump Rooms, Generator Rooms and Public Toilets > 300 s.f. Ct. Amd Duration. 90-minutes Illumination Level Under Emergency Power. One Foot-candle Activation. Emergency Illumination. Utility, Circuit Breaker or Switch. Section Accessible Means of Egress Accessible Means of Egress Required. At least one accessible means of egress. If more than one means of egress, at least two accessible means of egress. Not required in existing buildings Continuity and Components Elevator Required. Five Storeys. Elevator with standby power to be provided. Section Stairways. 48 Minimum between handrails and area of refuge. Exception for automatic sprinkler system Elevators. Standby power requirements. Chapter #27 and Section Platform Lifts. Accessible route. Section Chapter # Area of Refuge Travel Distance. Section Stairway or Elevator Access Size Separation. Smoke Barrier Section 709 or Stair Enclosure Section Two-Way Communication at area of refuge. Section and Exterior areas for Assisted Rescue Size Separation. Interior of the building Openness Stairways. Width of Stairs Two-Way Communications. Elevator Landing System Requirements Directions. Two-Way Communication System Signage Signage. Area of Refuge. Exterior Area of Assisted Rescue Directional Signage. Accessible Means of Egress. Elevator Landings Instructions. Area of Refuge and Exterior Areas of Assisted Rescue. Use of Area. Section Doors, Gates and Turnstiles Doors Size of Doors Projections into Clear Width Bed and Breakfast Establishments. Ct. Amd. 3

4 Door Swing. Side hinged swinging. See Door Encroachment Direction of Swing. Ct. Amd Door Opening Force Location of Applied Forces Special Doors Revolving Doors Egress Component for Revolving Doors Other Than Egress Component for Revolving Doors Power Operated Doors Special Purpose Horizontal Sliding Doors Security Grilles Floor Elevation. Same elevation on each side of the door Landings at Doors. Width of landing. Door fully open not reduce by more than 7. Door swing, one half the required width. Landing size Thresholds. Exception: Threshold Height. ¾ in Dwelling Units Door Arrangement. 48 between two doors in series Door Operation. Without use of key or special knowledge Door Hardware. Lever Hardware Door Hardware Height. Pool Exception Door Locks and Latches. Door to remain unlocked when building is occupied. Exceptions provided Door Bolt Locks. Flush bolts or surface bolts. Exceptions provided Door Unlatching. One operation Closet and Bathroom Doors. R-4, I-2, I-4. Ct. Amd Controlled Egress Doors in Groups I-1 and I-2. Special Locking Delayed Egress Locks. Not for Groups A, E and H Sensor Release of Electrically Locked Egress Doors Electromagnetically Locked Egress Doors Locking Arrangements in Correctional Facilities Stairway Doors. Openable from both sides. Re-Entry Panic and Fire Exit Hardware. Group H. Groups A & E. 50 or more. Electrical Rooms 1,200 Amps or greater Gates Stadiums. Gates Turnstiles High Turnstile Additional Door Section Stairways General Width and Capacity Headroom Walkline. Winder Stairs Stair Reads and Risers Dimension Reference Surfaces Riser Height and Tread Depth. Ct. Amd. 4

5 Winder Treads. Dwelling Units. Ct. Amd Dimensional Uniformity. 3/8 (.374) difference Nonuniform Height Risers. Public Way Nosing and Riser Profile Stairway Landings Stairway Construction Stairway Walking Surface. Slope of surface. Solid treads and risers Stairway Outdoor Conditions. Snow Conditions. Ct. Amd. Mod Enclosures Under Interior Stairways Enclosures Under Exterior Stairways Stairway Vertical Rise. 12 feet Curved Stairways Spiral Stairways Handrails. Section Section Section 2407 Glass. Ct Amd Stairway to Roof. Four or more stories Stairway to Elevator Equipment Roof Access Guards. Section Stairways and 10 feet to roof edge Alternating Tread Devices Handrails of Alternating Tread Devices Treads of Alternating Tread Devices Ship Ladders. Access to Unoccupied Roofs Handrails of Ships Ladders Treads of Ships Ladders Ladders Section Ramps Scope Slope Cross Slope Vertical Rise Minimum Dimensions Width and Capacity Headroom Restrictions Landings Slope Width Length Change in Direction Doorways Ramp Construction Ramp Surface Outdoor Conditions Handrails. Rise Greater than 6. Section Guards. Section

6 Edge Protection Curb, Rail, Wall or Barrier Extended Floor or Ground Surface Section Exit Signs. (Emergency Lighting Section 1008) Where Required Accessible Exits. CT Amd Floor Level Exit Signs. R-1, I-2, R-2. Section Ct. Amd Illumination Raised Character and Braille Exit Signs Internally Illuminated Exit Signs Externally Illuminated Exit Signs Graphics Exit Sign Illumination Power Source Section Handrails Where Required. Section Stairways. Section Ramps Height. 34 to Handrail Graspability. Type I Type I Type II Continuity Fittings Handrail Extensions Clearance. 1 ½ Projections. Limited to 4 ½ Intermediate Handrails. Ct. Amd. Section Guards General Where Required Glazing. Section Section Height. Ct. Amd Opening Limitations. Ct. Amd Screen Porches Mechanical Equipment, Systems and Devices. Roof or walking surface. See 2015 IMC Roof Access. 10 feet to roof edge Window Openings Window Opening Control Devices Retaining Walls. Ct. Amd. 6

7 Section Exit Access. Travel Distance in Section General Egress Through Intervening Spaces. Elevator Lobby. Accessory to area. Not high hazard Multiple Tenants. Passing through adjacent space. Exception. Section Exit Access Travel Distance General Travel Distance Limitations. Table Exit Access Travel Distance. Ct. Amd Exterior Egress Balcony Increase Group F-1 and S-1 Increase. 400 feet Measurement Exit Access Stairways and Ramps. Section Aisles General Aisles in Assembly Spaces. Section Aisles in Groups B and M. Section Aisles Accessways in Group M Aisles in Other Than Assembly Spaces and Group B and M. Section Exit Access Stairways and Ramps General All Occupancies. Stairs within a single story Occupancies Other than Groups 1-2 and 1-3. Ct. Amd. Limited. Section Group I-2 and I-3 Occupancies. Section 713. Section Corridors Construction. Table Group R-1 Bed and Breakfast Establishments. Ct. Amd Table. Corridor Fire Resistance Rating. Ct. Amd Corridor Width. Table Minimum Corridor Width. I-2 Exception Obstruction. Encroachment. Section Dead Ends. 20 Feet. Exceptions for 50 Feet Air Movement in Corridors Corridor Ceilings. Air Plenum Corridor Continuity. Section Elevator Lobby Enclosure. Section Egress Balconies Section General Section Wall Separation Section Openness Section Location 7

8 Section 1022 Exits General. No use that interferes with means of egress. No reduction of protection Exterior Exit Doors Detailed Requirements. Section Arrangement Mercantile Occupancies. 1/2 of required egress width on one wall. Ct. Amd. Section 1023 Interior Exit Stairways and Ramps. See 712 for Vertical Openings General. No use other than means of egress Construction. One-Hour / Two-Hour. Section 707. Section Termination Extension. Exit Passageway Openings. Exit access from normally occupied spaces Penetrations. Ct. Amd. Security Systems Ventilation Interior Exit Stairways and Ramp Exterior Walls. Less than 180* Discharge Identification. Swing Gate Stairway Identification Signs. Stairway Floor Number Signs. Greater than three floors Signage Requirements Elevator Lobby Identification Signs Smokeproof Enclosures and Pressurized Stairways and Ramps. Section , Section Section Termination and Extension. Exit Passageway Enclosure Access. Section 1024 Exit Passageway Exit Passageway. Means of Egress Width Construction. Rating to match stair enclosure. One or Two Hour Termination. Exit Discharge Openings. Section 716. Normally occupied spaces Penetrations. Ct. Amd Ventilation. Section 1025 Luminous Egress Path Markings General. High-Rise Buildings. Groups A, B, E, I, M & R Markings Within Exit Components Steps Landings Handrails Perimeter Demarcation Lines Floor-mounted Demarcation Lines Wall-mounted Demarcation Lines. 8

9 Transition Obstacles Doors within the Exit Path Emergency Exit Symbol Door Hardware Markings Door Frame Markings Uniformity Self Luminous and Photoluminescent Illumination Statutory Requirements for Exit Access Corridors. Ct. Amd. Occupancy A over 300 persons, B Medical, E, I-1, I-2, R-1 Hotels, R-2 Dormitories. Newly Constructed Occupancies Size and Location. Ct. Amd Device or System Requirements. Ct. Amd Illumination. Ct. Amd. Section 1026 Horizontal Exits Horizontal Exits Separation. Fire Wall or Fire Barrier. Two-Hour Rated Opening Protectives. Section Doors Refuge Area Capacity Number of Exits. Section 1027 Exterior Exit Stairways and Ramps Exterior Exit Stairways and Ramps Use in a Means of Egress Open Side Side Yards Location. 10 feet Separation Distance Exterior Ramps and Stairway Protection. Separation to the interior. Less than 180*. Section 1028 Exit Discharge General. 50% on the LED requirements Exit Discharge Width or Capacity Exit Discharge Components Remoteness of Exit Discharge. Ct. Amd Egress Courts Width or Capacity Construction and Openings Access to a Public Way. Safe dispersal area. 9

10 Section 1029 Assembly General Bleachers. ICC Spaces Under Grandstands and Bleachers. One-Hour Separation Assembly Main Exit. Ct. Amd. 2/3 Rule Assembly Other Exits Foyers and Lobbies. Waiting Areas. Clear Path Interior Balcony and Gallery Means of Egress Capacity of Aisle for Assembly Without Smoke Protection Smoke Protected Assembly Seating Smoke Control Roof Height Automatic Sprinklers Outdoor Smoke-Protected Assembly Seating Travel Distance Common Path of Travel Path Through Adjacent Row Assembly Aisles are Required Minimum Aisle Width Aisle Catchment Areas Converging Aisles Uniform Width and Capacity Dead End Aisles Aisle Measurement Assembly Aisle Obstructions Stairways Connecting to Stepped Aisles Stairways Connecting to Vomitories Transitions Transitions and Stairways that Maintain Stepped Aisle Riser and Tread Dimensions Transitions to Stairways that do not Maintain Stepped Aisle Riser and Tread Dimensions Stairways and Stepped Aisles in a Straight Run Stairways and Stepped Aisles that Change Direction Transition Marking Construction. Aisles, Stepped Aisles and Ramped Aisles Waling Surface Outdoor Conditions Aisle Accessways. Seating at Tables Seating at Tables Aisle Accessway Capacity and Width for Seating at Tables Seating at Table Aisle Accessway Length Clear Width of Aisle Accessway Serving Seating in Rows Dual Access Single Access. 10

11 Assembly Aisle Walking Surfaces Ramped Aisles Cross Slope Landings Edge Protection Stepped Aisles Treads Risers Construction Tolerances Tread Contrasting Marking Stripe Nosing and Profile. Section through Seat Stability. 200 Seat Rule Handrails. Section Discontinuous Handrails Handrail Termination Mid-Aisle Termination Rails. Lower Handrail Assembly Guards Perimeter Guards Cross Aisles Sightline Constrained Guard Heights Guards at the End of Aisles. Section 1030 Emergency Escape and Rescue General. R-2 Units as per Table (1) and (2) and R-3. Ct. Amd Operations Constraints and Opening Control Devices. Ct. Amd Group E Occupancies. Ct. Amd Group I-4 Occupancies. Ct. Amd Minimum Size Minimum Dimensions. Ct. Amd Maximum Height From Floor. Ct. Amd Operational Constraints Window Wells Minimum Size Ladders or Steps. Section 1031 Maintenance of the Means of Egress IFC General Reliability Security Devices and Egress Locks Obstructions Group I-2. Section Exit Signs. Section Nonexit Identification Finishes, Furnishings and Decorations. 11

12 Emergency Escape and Rescue Openings Inspections, Testing and Maintenance Floor Identification Signs. Section Douglas L. Golden Bruce J. Spiewak, AIA Consulting Architect, LLC 375 Morgan Lane. Unit 405 West Haven, Conn October 23,