2018 IBC Exit Systems - Iccsafe
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit Systems2018 IBC Exit SystemsBased on the 2018 International Building CodeCourse Description This seminar addresses the provisions ofChapter 10 of the 2018 International BuildingCode (IBC ) regarding specific aspects of themeans of egress, those components regulatedas “exits.”2018 IBC Exit SystemsCopyright 2019 International Code Council31
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsObjectivesUpon completion, participants will be better able to: Determine those means of egress components that aredefined as “exits” Identify where exit elements are required Identify the specific technical criteria for exits Describe the regulation of the exit discharge system2018 IBC Exit Systems4Course Overview Module 1 – Definition of an ExitModule 2 – Use of Exit ComponentsModule 3 – Specifics of Exit ComponentsModule 4 – Exit Discharge2018 IBC Exit Systems5Module 1Definition of an ExitCopyright 2019 International Code Council2
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsDefinition of Exit The term “exit” is used in the code to describeone of three parts of the means of egresssystem. The means of egress includes: Exit access Exit Exit discharge2018 IBC Exit Systems7Definition of Means of Egress The means of egress is defined as “a continuousand unobstructed path of vertical and horizontalegress travel from any occupied portion of abuilding or structure to a public way. A means ofegress consists of three separate and distinctparts: the exit access, the exit and the exitdischarge.2018 IBC Exit Systems8AlleyExit AccessStreetShaded area exit access2018 IBC Exit SystemsCopyright 2019 International Code Council93
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsAlleyExit DischargeStreetShaded area exit discharge2018 IBC Exit Systems10Definition of Exit An exit is defined as “that portion of a means ofegress system between the exit access and theexit discharge or public way. Exit componentsinclude: Exterior exit doors at the level of exit dischargeInterior exit stairways/rampsExit passagewaysExterior exit stairways/rampsHorizontal exits2018 IBC Exit Systems11AlleyExitStreetShaded area exit2018 IBC Exit SystemsCopyright 2019 International Code Council124
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsDefinitions of Exit Components The individual exit components are alsospecifically defined in the IBC: Horizontal exitExit passagewayInterior exit stairwaysExterior stairway The components are further defined by theirapplicable technical provisions.2018 IBC Exit Systems13Definition of Horizontal Exit A horizontal exit is defined as “an exitcomponent consisting of fire-resistance-ratedconstruction and opening protectives intended tocompartmentalize portions of a building therebycreating refuge areas that afford safety from thefire and smoke from the area of fire origin.”2018 IBC Exit Systems14Definition of Exit Passageway An exit passageway is defined as “an exitcomponent that is separated from other interiorspaces of a building or structure by fireresistance-rated construction and openingprotectives, and provides for a protected path ofegress travel in a horizontal direction to an exitor to the exit discharge.”2018 IBC Exit SystemsCopyright 2019 International Code Council155
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsDefinition of Interior Exit Stairway An interior exit stairway is defined as “an exitcomponent that serves to meet one or moremeans of egress design requirements, such asrequired number of exits or exit access traveldistance, and provides for a protected path ofegress travel to the exit discharge or public way.”2018 IBC Exit Systems16Definition of Exterior Exit Stairway An exterior exit stairway is defined as “an exitcomponent that serves to meet one or moremeans of egress design requirements such asrequired number of exits or exit access traveldistance, and is open to yards, courts or publicways.”2018 IBC Exit Systems17Exit Ramps Interior exit ramps and exterior exit ramps arealso considered as exit components. The definitions and protective provisions forsuch ramps are consistent with those for interiorexit stairways and exterior exit stairways,respectively.2018 IBC Exit SystemsCopyright 2019 International Code Council186
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsExterior Exit Doors The most common exit component is an exteriorexit door at the level of exit discharge. Exit doors, whether interior or exterior, areregulated under the provisions of Section 1010.2018 IBC Exit Systems19Level of Exit Discharge The level of exit discharge is also specificallydefined as “the story at the point at which an exitterminates and an exit discharge begins. Exit discharge is “that portion of a means ofegress system between the termination of anexit and a public way.”2018 IBC Exit Systems20Module 2Use of Exit ComponentsCopyright 2019 International Code Council7
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsConcept of Exit Components Once reaching an exit component, the occupantis provided with an established degree ofprotection from fire and smoke. Fire-resistance-rated exitways are provided forinterior travel, while exterior travel, althoughabove the discharge level, is separated from aninterior fire and smoke accumulation such that itis not a concern.2018 IBC Exit Systems22Concept of Exit Components Exits are key elements in the design of themeans of egress for a variety of reasons,including: Termination point for travel distance limits Number of means of egress from a story2018 IBC Exit Systems23ExitsSection 1022.1 An exit shall not be used for any purpose thatinterferes with its function as a means of egress. Once a given level of exit protection is provided,that protection level shall not be reduced untilarrival at the exit discharge. Exit components are primarily required bySections 1006 and 1007 addressing the numberand configuration of exits.2018 IBC Exit SystemsCopyright 2019 International Code Council248
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsExitsSections 1006 and 1007 Exits, in addition to the minimum numberrequired by Section 1006, may also need to beprovided in order to meet various means ofegress design requirements in Chapter 10. The most common application is the limit placedon travel distance to an exit component. Other applications include the required separation ofexits per Section 1007.2018 IBC Exit Systems25Number of ExitsSection 1006.1 The number of exits (as well as exit accessdoorways) is regulated for Spaces, including mezzanines Stories and occupied roofsSection 1006.2Section 1006.32018 IBC Exit Systems26Egress from SpacesSection 1006.2.1 Two exits (or exit access doorways) shall beprovided from a room, area or space where thedesign occupant load or the common path ofegress travel distance exceeds the values setforth in Table 1006.2.1.2018 IBC Exit SystemsCopyright 2019 International Code Council279
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsEgress from SpacesTable 1006.2.12018 IBC Exit Systems28Egress from SpacesSection 1006.2.1, #1 The cumulative occupant load from adjacentrooms, areas or spaces must be determinedbased on Section 1004.2. Where egress occurs through a lobby, foyer,vestibule or similar space, the number of exits isnot to be based on the cumulative occupant loadsfor areas discharging through such spaces. However, the capacity of the exits from lobbies andsimilar spaces is to be based on applicable cumulativeoccupant loads.2018 IBC Exit Systems29Egress from SpacesSection 1006.2.1, #1 Example of auditorium and its lobby: Single exit permitted from lobby Capacity of exit doors based on occupant load of1,500 (50% of 3,000 per Section 1029.2)2018 IBC Exit SystemsCopyright 2019 International Code Council3010
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsEgress from SpacesSection 1006.2.1.1 A minimum of three exits or exit accessdoorways are required from rooms or spaceshaving an occupant load of 501 to 1000. A minimum of four exits or exit access doorwaysare required from rooms or spaces having anoccupant load of more than 1000.2018 IBC Exit Systems31Egress from SpacesSection 1006.2.2 Additional provisions address unique egressrequirements for: Boiler, incinerator and furnace roomsRefrigeration machinery roomsRefrigerated rooms or spacesGroup I-4 infant/toddler day care facilitiesGroup R-3 and R-4 occupancies protected by anNFPA 13D sprinkler system2018 IBC Exit Systems32Egress from StoriesSection 1006.3 The minimum required number of separate anddistinct exits (or access to exits) from a story oroccupied roof is based on the aggregateoccupant load served on that story. Where stairways serve more than one story, only theoccupant load of each story considered individually isused when calculating the required number of exits(or access to exits) serving that story.2018 IBC Exit SystemsCopyright 2019 International Code Council3311
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsEgress from StoriesSection 1006.3 No cumulative or contributing occupant loadfrom adjacent stories needs to be considered600 Occupants3 exits required 200200200 400 Occupants2 exits required 2018 IBC Exit Systems 34Egress from Adjacent StoriesSection 1006.3.1 In multistory buildings, the use of exit accessstairways is selectively permitted. In all other cases, exit components must be utilizedas a vertical continuation of the means of egresssystem. The path of egress travel to an exit is typicallylimited such that travel is not permitted to passthrough more than one adjacent story.2018 IBC Exit Systems35Egress from Adjacent StoriesSection 1006.3.12018 IBC Exit SystemsCopyright 2019 International Code Council3612
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsEgress through Adjacent StoriesSection 1006.3.1, Exceptions Travel through more than one adjacent story ispermitted: Within dwelling units of Groups R-1, R-2 and R-3 wherestairways connect no more than four stories In Group R-3 congregate residences and Group R-4facilities In open parking garages where the means of egressserves only the garage For outdoor facilities where all portions of the means ofegress are essentially open to the outside For travel between balconies and assembly areas below2018 IBC Exit Systems37Number of ExitsSection 1006.3.2 Each story or occupied roof must have theminimum number of exits, or access to exits, asset forth in Table 1006.3.2.2018 IBC Exit Systems38Number of ExitsSection 1006.3.2 The required number of exits, or exit accessstairways where permitted, from any story oroccupied roof shall be maintained until arrival atthe exit discharge or a public way. It is important that the exits be adequatelyseparated per Section 1007 in order to maintaintheir independence.2018 IBC Exit SystemsCopyright 2019 International Code Council3913
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsSingle Exits from StoriesSection 1006.3.3 A single exit or access to a single exit ispermitted from any story or an occupied roofwhere in conformance with Section 1006.3.3. Five different conditions are set forth where asingle exit or access to a single exit is permitted.2018 IBC Exit Systems40Single ExitsSection 1006.3.3, Condition 1 A single exit or access to a single exit ispermitted from any story or an occupied roofwhere the occupant load, number of dwellingunits and exit access travel distance do notexceed the values in Table 1006.3.3(1) or1006.3.3(2).2018 IBC Exit Systems41Number of ExitsTable 1006.3.3(1)2018 IBC Exit SystemsCopyright 2019 International Code Council4214
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsNumber of ExitsTable 1006.3.3(2)2018 IBC Exit Systems43Number of ExitsSection 1006.3.3, Conditions 2–5 In addition to the allowances for single-exit storiesin Tables 1006.3.2(1) and 1006.3.2(2), there are anumber of other conditions under which a singleexit is permitted: Rooms, areas and spaces complying with Section1006.2.1, provided the exits discharge directly to theexterior at the level of exit discharge Parking garages where vehicles are parked mechanically Group R-3 and R-4 occupancy buildings Individual dwelling units (subject to occupant load andtravel distance limitations)2018 IBC Exit Systems44Dwelling UnitsSection 1006.3.3, Condition 5 Single exits are permitted within and fromdwelling units in single-story and multistorybuildings where the: dwelling unit complies as a space with one means ofegress, and exit from the dwelling unit discharges directly to theexterior at the level of exit discharge, or the exitaccess outside of the unit’s entrance door providesaccess to at least two exits.2018 IBC Exit SystemsCopyright 2019 International Code Council4515
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsMixed OccupanciesSection 1006.3.3.1 A single exit or single access stairway may servemultiple occupancies on a story where incompliance with the unity formula: The sum of the ratios of the occupant load of eachspace divided by the allowable number of occupantsas indicated by Table 1006.3.2(2) for each occupancydoes not exceed one. Where dwelling units are involved, the actual numberof units divided by four is to be added to the ratio ofthe other occupancy.2018 IBC Exit Systems46Mixed OccupanciesSection 1006.3.3.1Noncompliant2018 IBC Exit Systems47Mixed OccupanciesSection 1006.3.3.1Group R-24 unitsTwounitsGroup R-2Second storysingle exit permitted10/29 2/4 1Compliant2018 IBC Exit SystemsCopyright 2019 International Code Council4816
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsExit ConfigurationSection 1007.1 Where multiple exits are required, they shall beadequately separated from each other such thatif one exit is blocked, the others are available. Exits, exit access doorways, and exit accessstairways and ramps serving spaces andindividual stories shall be separated inconformance with Section 1007.2018 IBC Exit Systems49Separation of Two ExitsSection 1007.1.1 Where two exits, exit access doorways, exitaccess stairways or ramps, or any combinationthereof, are required within the exit access, theyshall be separated a minimum of ½ of themaximum overall diagonal of the building or areaserved. Where the building is fully sprinklered, the requiredseparation is reduced to 1/3 of the overall diagonal.2018 IBC Exit Systems50Separation of Two ExitsSection 1007.1.12018 IBC Exit SystemsCopyright 2019 International Code Council5117
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsSeparation of Two ExitsSection 1007.1.1.1 The separation distance required in Section1007.1.1 shall be measured to: any point along the width of the doorway (exits andexit access doorways) the closest riser (exit access stairways) the start of the ramp run (exit access ramps) The separation between two interior exitstairways is measured between the doorways ofthe stairway enclosures, not the enclosure walls.2018 IBC Exit Systems52Separation of Three or More ExitsSection 1007.1.2 Where access to three or more exits is required,at least two must be separated in conformancewith Section 1007.1.1. The additional required exit(s) must be located areasonable distance from the others so that ifone becomes blocked, the others will beavailable.2018 IBC Exit Systems53Separation of Three or More ExitsSection 1007.1.2Assume nonsprinklered condition?2018 IBC Exit SystemsCopyright 2019 International Code Council5418
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsModule 3Specifics of Exit ComponentsExterior Doors at the Level of Exit DischargeSection 1022.2 For most buildings, the typical exit componentsare exterior doors at or near grade. This component is considered as a protectedelement as it leads directly to exterior travel atground level, providing direct access to a publicway with limited, if any, concern for fire andsmoke risk.2018 IBC Exit Systems56Exterior Doors at the Level of Exit DischargeSection 1022.2 Complying doors, including exterior doors, areregulated by Section 1010. In addition, Section 1022.2 mandates that allbuildings used for human occupancy beprovided with at least one exterior door thatmeets the requirements of Section 1010.1.1(size of doors).2018 IBC Exit SystemsCopyright 2019 International Code Council5719
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsInterior Exit Stairways and RampsSection 1023.1 Interior exit stairways and ramps shall beenclosed and lead directly to the exterior of thebuilding or extended to the exterior through theuse of a complying exit passageway. As an alternative, extended travel is permittedthrough an interior exit discharge area as limitedby Section 1028.1. Specifics are addressed under the Exit Dischargemodule of this program.2018 IBC Exit Systems58Interior Exit Stairways and RampsSection 1023.1 An interior stairway or ramp shall not be used forany purpose other than: A means of egress A circulation path2018 IBC Exit Systems59Interior Exit Stairway ConstructionSection 1023.2 Enclosures for interior exit stairways and rampsare to be constructed as fire barriers orhorizontal assemblies, or both. Minimum 2-hour where connecting four or morestories Otherwise, minimum of 1-hour Not less than the rating of the floor assemblypenetrated, but no greater than 2 hours2018 IBC Exit SystemsCopyright 2019 International Code Council6020
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsInterior Exit Stairway TerminationSection 1023.3 Interior exit stairways and ramps are to becontinuous and terminate at an exit discharge orthe public way, except where extended by anexit passageway. Such interior exit stairways and ramps may open intoan interior exit discharge condition as established inExceptions 1 and 2 of Section 1028.1.2018 IBC Exit Systems61Interior Exit Stairway ExtensionSection 1023.3.1 Where interior exit stairways and ramps areextended by an exit passageway, thestairway/ramp shall be separated from the exitpassageway by a fire barrier or horizontalassembly, or both. The minimum rating of the fire barrier shall be not lessthan the required rating for the interior exitstairway/ramp. The only opening permitted in the separationbetween the stairway and exit passageway isthe required fire door assembly.2018 IBC Exit Systems62Interior Exit Stairway ExtensionSection 1023.3.1Fire door assemblyper Section 716.5Approved barrier perSection 1023.82018 IBC Exit SystemsCopyright 2019 International Code Council6321
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsInterior Exit Stairway ExtensionSection 1023.3.1, Exception 1 Penetrations of the fire barrier separating theinterior exit stairway and the exit passagewayare permitted when in compliance with Section1023.5. Six conditions are identified provided suchpenetrations are appropriately protected.2018 IBC Exit Systems64Interior Exit Stairway ExtensionSection 1023.3.1, Exception 2 The fire barrier and fire door assemblies are notrequired where there are no openings in the exitpassageway extension.2018 IBC Exit Systems65Interior Exit Stairway ExtensionSection 1023.3.1, Exception 3 The fire barrier and fire door assemblies are notrequired where the interior exit stairway ispressurized and the pressurization is extendedto the exit passageway.2018 IBC Exit SystemsCopyright 2019 International Code Council6622
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsInterior Exit Stairway OpeningsSection 1023.4 Interior exit stairway and ramp openingprotectives shall comply with Section 716. Openings other than unprotected exterioropenings are limited to those necessary for: Exit access to the enclosure from normally occupiedspaces, and Egress from the enclosure. Elevators are not permitted to open into interiorexit stairways and ramps.2018 IBC Exit Systems67Interior Exit Stairway PenetrationsSection 1023.5 Penetrations into and openings through interiorexit stairways are generally prohibited. Allowances include: Equipment and ductwork necessary for independentventilation or pressurization Fire protection systems Security systems Two-way communication systems Electrical raceways serving the enclosure2018 IBC Exit Systems68Interior Exit Stairway PenetrationsSection 1023.5, ExceptionPenetrations generallyprohibited into stairway See 1023.5 for specific permitted items2018 IBC Exit SystemsCopyright 2019 International Code Council6923
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsInterior Exit Stairway PenetrationsSection 1023.5 There shall be no penetrations orcommunicating openings, whether protected ornot, between adjacent interior exit stairways andramps.2018 IBC Exit Systems70Interior Exit Stairway VentilationSection 1023.6 Equipment and ductwork for interior exit stairwayand ramp ventilation must: Be located at the building’s exterior and directly connectto the enclosure by ductwork in complying shafts, or When located within the enclosure, receive intake airtaken directly from the outdoors and exhaust air directlyto the outside, or utilize ducts within complying shafts, or When located within the building, be separated from theremainder of the building, including other mechanicalequipment, through the use of complying shafts.2018 IBC Exit Systems71Interior Exit Stairway VentilationSection 1023.6 Under each of the three ventilation conditions,openings into the fire-resistance-ratedconstruction shall be protected and limited tothose needed for maintenance and operation. Interior exit stairway and ramp ventilationsystems shall be independent of other buildingventilation systems.2018 IBC Exit SystemsCopyright 2019 International Code Council7224
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsInterior Exit Stairway Exterior WallsSection 1023.7 In addition to the general requirementsaddressing exterior wall protection, specialprovisions apply where nonrated walls orunprotected openings enclose the exterior of thestairway and the walls/openings are exposed byother parts of the building at less than 180degrees.2018 IBC Exit Systems73Interior Exit Stairway Exterior WallsSection 1023.7 Under such conditions, the building exteriorwalls within 10 feet horizontally of a nonratedwall or opening shall be rated for at least 1 hour. Openings within such walls shall be protected byminimum ¾-hour protectives. The fire protection shall extend from the groundat least 10 feet vertically above the topmostlanding, or to the roof, whichever is lower.2018 IBC Exit Systems74Interior Exit Stairway Exterior WallsSection 1023.72018 IBC Exit SystemsCopyright 2019 International Code Council7525
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsDischarge IdentificationSection 1023.8 Where an interior exit stairway or rampcontinues below its level of exit discharge, anapproved barrier must be provided to preventpersons from unintentionally traveling to thelevel(s) below. Directional exit signage must be provided in additionto the required barrier.2018 IBC Exit Systems76Stairway Identification SignsSection 1023.9 An informational sign is required at each floorlevel landing of an interior exit stairway or rampconnecting four or more stories. In addition to the stairway identification sign, afloor-level sign in visual characters, raisedcharacters and Braille complying with ICC A117.1shall be located adjacent to the door leading fromthe interior stairway or ramp onto the story toidentify the floor level.2018 IBC Exit Systems77Stairway Identification SignsSection 1023.9NORTH STAIRWAYEXIT AT 1ST FLOORDIRECTLY TO EXTERIOR2018 IBC Exit SystemsCopyright 2019 International Code Council7826
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsElevator Lobby Identification SignsSection 1023.10 Where the landing of an interior stairway has twoor more doors that lead to the floor level, anydoor with direct access to an enclosed elevatorlobby shall be identified. A sign shall be located on the door or adjacentto the door that states “Elevator Lobby.” Letters shall be at least 1 inch in height and incontrast to their background.2018 IBC Exit Systems79Smokeproof Enclosures and PressurizedStairways and RampsSection 1023.11 As required for high-rise buildings, undergroundbuildings and airport traffic control towers,interior exit stairways and ramps shall besmokeproof enclosures. The requirements for construction and operation areestablished in Section 909.20.2018 IBC Exit Systems80Termination and ExtensionSection 1023.11.1 Termination of a smokeproof enclosure shall occurat an exit discharge or the public way. A smokeproof enclosure is permitted to egress throughareas on the level of exit discharge as permitted bySection 1028.1 for interior exit discharge.2018 IBC Exit SystemsCopyright 2019 International Code Council8127
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsTermination and ExtensionSection 1023.11.1 The extension of a smokeproof enclosure by anexit passageway is permitted where: The exit passageway is without openings other than thefire door assembly required by Section 1023.3.1, and Doors necessary for egress from the exit passageway. Openings are permitted within the exitpassageway and the fire barrier separating the exitpassageway from the smokeproof enclosure is notrequired provided: The exit passageway is protected and pressurized inthe same manner as the smokeproof enclosure.2018 IBC Exit Systems82Enclosure AccessSection 1023.11.2 Unless the pressurization alternative is used,access to the stairway within a smokeproofenclosure shall be by way of a vestibule or anopen exterior balcony.2018 IBC Exit Systems83Natural Ventilation AlternativeSection 909.20.32018 IBC Exit SystemsCopyright 2019 International Code Council8428
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsMechanical Ventilation AlternativeSection 909.20.42018 IBC Exit Systems85Stairway Pressurization AlternativeSection 909.20.5 Where the building is fully sprinklered, thevestibule is not required, provided each interiorexit stairway is pressurized. The pressurization level, in the shaft relative tothe building, shall be: Not less than 0.10 inch of water Not more than 0.35 inch of water2018 IBC Exit Systems86StandpipesSection 1023.12 Standpipes and standpipe hose connections,where mandated by Section 905.3, are to belocated as required by Section 905.4. At every interior stairway, a connection shall beprovided for each story above grade plane. Hose connections are to be located at the main floorlanding unless otherwise approved by the fire codeofficial.2018 IBC Exit SystemsCopyright 2019 International Code Council8729
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsExit PassagewaysSection 1024.1 An exit passageway, provides exit travel along ahorizontal path, typically as selectivelydetermined by the designer. Exit passageways are also mandated by variousprovisions of the code where highly protectedegress travel is necessary. An exit passageway shall not be used for anypurpose other than as a means of egress and acirculation path.2018 IBC Exit Systems88Exit Passageway WidthSection 1024.2 Exit passageway minimum width and requiredcapacity are regulated in much the samemanner as required for corridors. The minimum required width is 44 inches, with areduction to 36 inches permitted where theoccupant load served is less than 50. Other than permissible encroachments, theminimum width or required capacity must beunobstructed.2018 IBC Exit Systems89Exit Passageway ConstructionSection 1024.3 Exit passageway enclosures shall have walls,floors and ceilings with a minimum 1-hour fireresistance rating Fire barriers or horizontal assemblies, or both, mustbe provided in order to achieve the requiredfireresistance. Where connecting interior exit stairways, therating cannot be less than that of the stairwayenclosure.2018 IBC Exit SystemsCopyright 2019 International Code Council9030
2019 ICC Annual ConferenceEducational Sessions Handout2018 IBC Exit SystemsExit Passageway TerminationSection 1024.4 Exit passageways located on the level of exitdischarge shall be continuous until reaching theexit discharge. Where located on other levels of the building,exit passageways shall terminate at an exit,such as an interior exit stairway.2018 IBC Exit Systems91Exit Passageway OpeningsSection 1024.5 Openings are limited in exit passageways inmuch the same manner as for interior exitstairways. Other than those in the exterior wall, openingsare limited to those necessary for exit access tothe exit passageway from normally occupiedspaces, and for egress from the exitpassageway. Exception for mall buildings2018 IBC Exit Systems92Exit Passageway PenetrationsSection 1024.6 Penetrations are also limited in exitpassageways in much the same manner as forinterior exit stairways. Generally prohibited, allowances include: Equipment and ductwork necessary for independentventilation or pressurization Fire protection systems Security systems Two-way communication systems Electrical raceways serving the enclosure2018 IBC Exit SystemsCopyright 2019 International Code Council9331
2019 ICC Annual ConferenceEducational Sessions Handout2018
An interior exit stairway is defined as “an exit component that serves to meet one or more means of egress design requirements, such as required number of exits or exit access travel distance, and provides for a protected path of egress travel to the exit discharge or public way.” 2018 IBC Exit Systems
2015 IBC Transition from the 2009 IBC 33 2015 Mezzanine – Means of egress and Openness 2015 IBC Transition from the 2009 IBC 34 2012 IBC 2015 IBC 505.2.2 505.2.3 The specific provisions for mezzanine means of egress have been deleted and replaced with a general reference to C
A The UPS and one or more Model IBC-L units in a line-up-and-match configuration. A The UPS and one or more Model IBC-L units in a standalone configuration. 1.2 UPS Systems Using Powerware 9390 Battery Cabinets A Powerware 9390 40-80 kVA UPS (Model IBC-S and Model IBC-L) A Powerware 9390 120-160 kVA UPS (Model IBC-L only)
Grupo IBC que tem as marcas: Instituto Brasileiro de Coaching - IBC, IBC Imóveis, Coaching Assessment IBC, IBC Shop e IBC Corporativo. A missão do IBC PNL é oferecer as melhores e mais diferenciadas formações em Programação Neurolinguística e a sua visão é se tornar a maior referência em PNL do Brasil.
Amended IBC-2012 IBC-2015 IBC-2018 101.2 Scope. The provisions of this code shall apply to the construction, alteration, relocation, enlargement, replacement, repair, equipment, use and occupancy, location, maintenance, removal and demolition of every building or structure or any appurtenances connected or attached to such buildings or structures.
Adopted ASCE 7 -10 with Supplement No. 1 Adopted ASCE 7 -16. ASCE 7-16. Adopts ASCE 7-16 with Supplement No. 1. 2021 IBC. ACI 318-14 and -19. 2018 IBC. 2021 IBC. SDPWS-2015 and -2021 2018 IBC. 2021 IBC. LIVE LOAD, ROOF. A load on a roof produced: 1. During maintenance by workers, equipment
2015 IBC Exit Systems 39 Mixed Occupancies Section 1006.3.2.1 In a mixed occupancy condition where single exits are permitted for the occupancies involved, the maximum number of occupants served by the single exit shall be based on: 2015 IBC Exit Systems 40 calculated
Apr 16, 2008 · 1 14 1 13 1 12 sci entrance exit 1 11 1 10 1 19. blue clinc orange clinic red clinic . 1 9 exit . 1 8 exit. exit. 1 18 . exit . chapel . exits . 1 3 . exit . 1 2 . 1 6. 1 1 . 1 4 . 1 7. yellow clinic. green clinic. exit. exit exit 1
GB50332 and ASTM F1962 ignores the cohesion and compressibility of the soil, using the same method to calculate sand soil and clay soil, and does not fully consider the effect of the internal friction angle of soils, which lead to a small impact of the soil properties on the arching factor. The BS EN 1594 standard considers the cohesion strength of soils and uses two different methods for .
