NCBC Chapter 10 Means of Egress Outline Use while referencing 2012 NC Building Code text

Transcription

1 SECTION 1001 ADMINISTRATION General Minimum requirements [F] Maintenance SECTION 1002 DEFINITIONS Definitions SECTION 1003 GENERAL MEANS OF EGRESS Applicability Ceiling height s Protruding objects Headroom Post-mounted objects Horizontal projections Clear width Floor surface Elevation change s Means of egress continuity Elevators, escalators and moving walks SECTION 1004 OCCUPANT LOAD Design occupant load Areas without fixed seating Table Maximum Floor Area Allowances per Occupant Increased occupant load Posting of occupant load Exiting from multiple levels Egress convergence Mezzanine levels Fixed Seating Outdoor areas s Multiple occupancies SECTION 1006 MEANS OF EGRESS ILLUMINATION Illumination required s Illumination level Illumination emergency power Performance of system SECTION 1007 ACCESSIBLE MEANS OF EGRESS Accessible means of egress required s Continuity and components s Elevators required s Stairways s Elevators s Platform lifts Openness Areas of refuge s Size Separation Two-way communication Exterior area for assisted rescue Openness Exterior exit stairway Two-way communication s System requirements Directions Signage Directional signage Instructions SECTION 1005 EGRESS WIDTH Minimum required egress width Door encroachment Door hardware encroachment June 24, 2015 Page 1 of 6

2 SECTION 1008 DOORS, GATES AND TURNSTILES Doors Size of doors s Projections into clear width Door swing s Door opening force Location of applied forces Special doors Revolving doors Table Revolving Door Speeds Egress component Other than egress component Power-operated doors s Horizontal sliding doors Access-controlled egress doors Security grilles Floor elevation s Landings at doors Thresholds Door arrangement Door operations Hardware Hardware height Locks and latches Bolt locks s Unlatching s Closet and bathroom doors in Group R-4 occupancies Special locking arrangements in Group I Delayed egress locks Electromagnetically locked egress doors Locking arrangements in correctional facilities Stairway doors s Panic and fire exit hardware Installation Balanced Doors Gates Stadiums Turnstiles High turnstile Additional door SECTION 1009 STAIRWAYS Stairway width s Headroom s Walkline Stair treads and risers Dimension reference surfaces Riser height and tread depth s Winder treads s Dimensional uniformity s Profile s Stairway landings Stairway construction Stairway walking surface Outdoor conditions Enclosures under stairways Vertical rise s Curved stairways s Spiral stairways Alternating tread devices Handrails of alternating tread devices Treads of alternating tread devices Ship ladders Handrails Stairway to roof Roof access Protection at roof hatch openings Stairway to elevator equipment June 24, 2015 Page 2 of 6

3 SECTION 1010 RAMPS Scope s Slope Cross slope Vertical rise Minimum dimensions Width Headroom Restrictions Landings Slope Width Length s Change in direction Doorways Ramp construction Ramp surface Outdoor conditions Handrails Edge protection s Curb, rail, wall or barrier Extended floor or ground surface Guards SECTION 1011 EXIT SIGNS Where required s Illumination Tactile exit signs Internally illuminated exit signs Externally illuminated exit signs Graphics Exit sign illumination Power source SECTION 1012 HANDRAILS Where required Height Handrail graspability Type I Type II Continuity s Fittings Handrail extensions s Clearance Projections Intermediate handrails SECTION 1013 GUARDS Where required Glazing Height s Opening limitations s Screen porches Mechanical equipment Roof access SECTION 1014 EXIT ACCESS General Egress through intervening spaces Multiple tenants Group I Suites in patient sleeping areas Area Exit access Travel distance Suites in areas other than patient sleeping areas Area Exit access One intervening room Two intervening rooms Exit access through suites Travel distance Separation Common path of egress travel s June 24, 2015 Page 3 of 6

4 SECTION 1015 EXIT AND EXIT ACCESS DOORWAYS Exits or exit access doorways from spaces Table Spaces with One Exit or Exit Access Doorway Three or more exits or exit access doorways Exit or exit access doorway arrangement Two exits or exit access doorways s Three or more exits or exit access doorways Boiler, incinerator and furnace rooms Refrigeration machinery rooms Refrigerated rooms or spaces Stage means of egress Gallery, gridiron and catwalk means of egress s SECTION 1016 EXIT ACCESS AND TRAVEL DISTANCE Travel distance limitations Table Exit Access Travel Distance s Exterior egress balcony increase SECTION 1017 AISLES General Aisles in Groups B and M Aisle accessways in Group M Seating at tables Aisle accessway for tables and seating Table and seating accessway width Table and seating aisle accessway length SECTION 1018 CORRIDORS Construction Table Corridor Fire-Resistance Rating s Corridor width s Corridor obstruction Dead ends s Air movement in corridors s Corridor ceiling Corridor continuity SECTION 1019 EGRESS BALCONIES General Wall separation Openness SECTION 1020 EXITS General Exterior exit doors Detailed requirements Arrangement SECTION 1021 NUMBER OF EXITS AND CONTINUITY Exits from stories Table Minimum Number of Exits for Occupant Load s Exits maintained Parking structures Helistops Single exits Table Stories with One Exit Exit continuity Exit door arrangement SECTION 1022 EXIT ENCLOSURES Enclosures required s Termination Extension Openings and penetrations Penetrations Ventilation Exit enclosure exterior walls Discharge identification Floor identification signs Signage requirements Smokeproof enclosures and pressurized stairways Termination and extension s Enclosure access SECTION 1023 EXIT PASSAGEWAYS Exit passageway Width Construction Termination Openings and penetrations Penetrations June 24, 2015 Page 4 of 6

5 SECTION 1024 LUMINOUS EGRESS PATH MARKINGS General s Markings within exit enclosures Steps Landings Handrails Perimeter demarcation lines Floor-mounted demarcation lines Wall-mounted demarcation lines Transition Obstacles Doors from exit enclosures Emergency exit symbol Door hardware markings Door frame markings Uniformity Self-luminous and photoluminescent Illumination SECTION 1027 EXIT DISCHARGE General s Exit discharge capacity Exit discharge location Exit discharge components Egress courts Width Construction and openings s Access to a public way SECTION 1025 HORIZONTAL EXTIS Horizontal exits s Separation Opening protectives Capacity of refuge area SECTION 1026 EXTERIOR EXIT RAMPS AND STAIRWAYS Exterior exit ramps and stairways Use in a means of egress Open side Side yards Location Exterior ramps and stairway protection s June 24, 2015 Page 5 of 6

6 SECTION 1028 ASSEMBLY General Bleachers Assembly main exit Assembly other exits Foyers and lobbies Interior balcony and gallery means of egress Enclosure of openings Width of means of egress for assembly Without smoke protection Smoke-protected seating Table Width of Aisles for Smoke- Protected Assembly Smoke control Roof height Automatic sprinklers s Width of means of egress for outdoor smoke-protected assembly Travel distance s Common path of egress travel s Path through adjacent row Assembly aisles are required Minimum aisle width Aisle width Converging aisles Uniform width Assembly aisle termination s Assembly aisle obstructions Clear width of aisle accessways serving seating Dual access Table Smoke-Protected Assembly Aisle Accessways Single access Assembly aisle walking surfaces Treads Risers s Tread contrasting marking stripe Seat stability s Handrails s Discontinuous handrails Intermediate handrails Assembly guards Cross aisles Sightline-constrained guard heights Guards at the end of aisles Bench seating SECTION 1029 EMERGENCY ESCAPE AND RESCUE General s Minimum size Minimum dimensions Maximum height from floor Operational constraints Window wells Minimum size Ladders or steps June 24, 2015 Page 6 of 6