CHAPTER 10MEANS OF EGRESSSECTION or portions thereof shall be pro-vided with a means of egress system as required by this provisions of this chapter shall control the design, con-struction and arrangement of means of egress componentsrequired to provide an approved means of egress from struc-tures and portions Minimum shall be unlawful to alter abuilding or structure in a manner that will reduce the number ofexits or the capacity of the means of egress to less than requiredby this code.[F] of egress shall be maintainedin accordance with theFire following words and terms shall, forthe purposes of this chapter and as used elsewhere in this code,have the meanings shown MEANS OF continuous andunobstructed way of egress travel from any accessible point ina building or facility to a public exit access component that defines and provides apath of egress portion of an exit access thatleads to an TREAD device that has aseries of steps between 50 and 70 degrees ( and rad)from horizontal, usually attached to a center support rail in analternating manner so that the user does not have both feet onthe same level at the same OF area where persons unable to usestairways can remain temporarily to await instructions or assis-tance during emergency seating PATH OF EGRESS portion ofexit access which the occupants are required to traverse beforetwo separate and distinct paths of egress travel to two exits areavailable. Paths that merge are common paths of travel. Com-mon paths of egress travel shall be included within the permit-ted travel enclosed exit access component that definesand provides a path of egress travel to an , door equipped with double-pivotedhardware so designed as to cause a semicounterbalanced swingaction when court or yard which provides access to apublic way for one or more ESCAPE AND RESCUE window, door or other similar device that provides fora means of escape and access for rescue in the event of an portion of a means of egress system which is sepa-rated from other interior spaces of a building or structure byfire-resistance-rated construction and opening protectives asrequired to provide a protected path of egress travel betweenthe exit access and the exit discharge. Exits include exterior exitdoors at ground level, exit enclosures, exit passageways, exte-rior exit stairs, exterior exit ramps and horizontal , path of egress travel from onebuilding to an area in another building on approximately thesame level, or a path of egress travel through or around a wall orpartition to an area on approximately the same level in the samebuilding, which affords safety from fire and smoke from thearea of incidence and areas communicating portion of a means of egress system thatleads from any occupied portion of a building or structure to portion of a means of egress sys-tem between the termination of an exit and a public DISCHARGE, LEVEL horizontal planelocated at the point at which an exit terminates and an exit dis-charge exit component that is separatedfrom other interior spaces of a building or structure byfire-resistance-rated construction and opening protectives, andprovides for a protected path of egress travel in a vertical or hor-izontal direction to the exit discharge or the public exit component that is separatedfrom all other interior spaces of a building or structure byfire-resistance-rated construction and opening protectives, andprovides for a protected path of egress travel in a horizontaldirection to the exit discharge or the public EXIT hardware that is listed foruse on fire door AREA, floor area within the inside per-imeter of the exterior walls of the building under consideration,exclusive of vent shafts and courts, without deduction for corri-dors, stairways, closets, the thickness of interior walls, col-umns or other features. The floor area of a building, or portionthereof, not provided with surrounding exterior walls shall bethe usable area under the horizontal projection of the roof orfloor above. The gross floor area shall not include shafts withno openings or interior OREGON STRUCTURAL SPECIALTY :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:17 PMColor profile: Generic CMYK printer profileComposite Default screenFLOOR AREA, actual occupied area not includingunoccupied accessory areas such as corridors, stairways, toiletrooms, mechanical rooms and AND TELESCOPIC seatingfacilities having an overall shape and size that are capable ofbeing reduced for purposes of moving or seating building component or a system of building com-ponents located at or near the open sides of elevated walkingsurfaces that minimizes the possibility of a fall from the walk-ing surface to a lower horizontal or sloping rail intended for grasp-ing by the hand for guidance or OF continuous and unobstructed pathof vertical and horizontal egress travel from any occupied por-tion of a building or structure to a public way. A means ofegress consists of three separate and distinct parts: the exitaccess, the exit and the exit merchandise pad is an area for dis-play of merchandise surrounded by aisles, permanent fixturesor walls. Merchandise pads contain elements such as nonfixedand moveable fixtures, cases, racks, counters and partitions asindicated in Section from which customers browse leading edge of treads of stairs and of landingsat the top of stairway number of persons for which themeans of egress of a building or portion thereof is door-latching assembly incorporat-ing a device that releases the latch upon the application of aforce in the direction of egress street, alley or other parcel of land open tothe outside air leading to a street, that has been deeded, dedi-cated or otherwise permanently appropriated to the public forpublic use and which has a clear width and height of not lessthan 10 feet (3048 mm). walking surface that has a running slope steeper thanone unit vertical in 20 units horizontal (5-percent slope).SCISSOR interlocking stairways providing twoseparate paths of egress located within one stairwell ASSEMBLY by means of egress that is not subject to smoke accumu-lation within or under a change in elevation, consisting of one or more or more flights of stairs, either exterior orinterior, with the necessary landings and platforms connectingthem, to form a continuous and uninterrupted passage from onelevel to , stairway that is open on at leastone side, except for required structural columns, beams, hand-rails and guards. The adjoining open areas shall be either yards,courts or public ways. The other sides of the exterior stairwayneed not be , stairway not meeting the defini-tion of an exterior , stairway having a closed circularform in its plan view with uniform section-shaped treadsattached to and radiating from a minimum-diameter tread with nonparallel 1003GENERAL MEANS OF general requirements specified inSections 1003 through 1013 shall apply to all three elements ofthe means of egress system, in addition to those specificrequirements for the exit access, the exit and the exit dischargedetailed elsewhere in this means of egress shall have a ceilingheight of not less than 7 feet 6 inches (2286 mm).Exceptions:1. Sloped ceilings in accordance with Section Ceilings of dwelling units and sleeping units withinresidential occupancies in accordance with Allowable projections in accordance with Stair headroom in accordance with Section Door height in accordance with Section Hallways and corridors shall be permitted to be notless than 7 feet (2134 mm) in Protruding objects shall complywith the requirements of Sections through objects are permitted toextend below the minimum ceiling height required by Sec-tion provided a minimum headroom of 80 inches(2032 mm) shall be provided for any walking surface,including walks, corridors, aisles and passageways. Notmore than 50 percent of the ceiling area of a means of egressshall be reduced in height by protruding :Door closers and stops shall not reduceheadroom to less than 78 inches (1981 mm).A barrier shall be provided where the vertical clearance isless than 80 inches (2032 mm) high. The leading edge ofsuch a barrier shall be located 27 inches (686 mm) maxi-mum above the Free-standing free-standing objectmounted on a post or pylon shall not overhang that post orpylon more than 4 inches (102 mm) where the lowest pointof the leading edge is more than 27 inches (686 mm) andless than 80 inches (2032 mm) above the walking a sign or other obstruction is mounted between postsor pylons and the clear distance between the posts or pylonsis greater than 12 inches (305 mm), the lowest edge of suchsign or obstruction shall be 27 inches (685 mm) maximum2082007 OREGON STRUCTURAL SPECIALTY CODEMEANS OF :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:17 PMColor profile: Generic CMYK printer profileComposite Default screenor 80 inches (2030 mm) minimum above the finished flooror :This requirement shall not apply to slopingportions of handrails serving stairs and Horizontal elements, fix-tures or furnishings shall not project horizontally fromeither side more than 4 inches (102 mm) over any walkingsurface between the heights of 27 inches (686 mm) and 80inches (2032 mm) above the walking :Handrails serving stairs and ramps are per-mitted to protrude inches (114 mm) from the Clear objects shall not reducethe minimum clear width of accessible routes as required inSection Floor surfaces of the means of egressshall have a slip-resistant surface and be securely Elevation changes in elevation of lessthan 12 inches (305 mm) exist in the means of egress, slopedsurfaces shall be used. Where the slope is greater than one unitvertical in 20 units horizontal (5-percent slope), ramps comply-ing with Section 1010 shall be used. Where the difference inelevation is 6 inches (152 mm) or less, the ramp shall beequipped with either handrails or floor finish materials thatcontrast with adjacent floor finish :1. A single step with a maximum riser height of 7 inches(178 mm) is permitted for buildings with occupanciesin Groups F, H, R-2, R-3, S and U at exterior doors notrequired to be accessible by Chapter A stair with a single riser or with two risers and a treadis permitted at locations not required to be accessibleby Chapter 11, provided that the risers and treadscomply with Section , the minimum depth ofthe tread is 13 inches (330 mm) and at least one hand-rail complying with Section 1012 is provided within30 inches (762 mm) of the centerline of the normalpath of egress travel on the A step is permitted in aisles serving seating that has adifference in elevation less than 12 inches (305 mm)at locations not required to be accessible by Chapter11, provided that the risers and treads comply withSection and the aisle is provided with a hand-rail complying with Section change in elevation in a corridor servingnonambulatory persons in a Group I-2 occupancy shall be bymeans of a ramp or sloped Means of egress path of egress travelalong a means of egress shall not be interrupted by any buildingelement other than a means of egress component as specified inthis chapter. Obstructions shall not be placed in the requiredwidth of a means of egress except projections permitted by thischapter. The required capacity of a means of egress systemshall not be diminished along the path of egress Elevators, escalators and moving ,escalators and moving walks shall not be used as a component ofa required means of egress from any other part of the :Elevators used as an accessible means of egressin accordance with Section 1004OCCUPANT Design occupant determining means of egressrequirements, the number of occupants for whom means ofegress facilities shall be provided shall be determined in accor-dance with this section. Where occupants from accessory areasegress through a primary space, the calculated occupant loadfor the primary space shall include the total occupant load ofthe primary space plus the number of occupants egressingthrough it from the accessory Areas without fixed number ofoccupants shall be computed at the rate of one occupant perunit of area as prescribed in Table For areas with-out fixed seating, the occupant load shall not be less thanthat number determined by dividing the floor area underconsideration by the occupant per unit of area factorassigned to the occupancy as set forth in Table an intended use is not listed in Table , thebuilding official shall establish a use based on a listed usethat most nearly resembles the intended :Where approved by the building official, theactual number of occupants for whom each occupiedspace, floor or building is designed, although less thanthose determined by calculation, shall be permitted to beused in the determination of the design occupant Increased occupant occupant load permittedin any building, or portion thereof, is permitted to be increasedfrom that number established for the occupancies in , provided that all other requirements of the code arealso met based on such modified number and the occupant loaddoes not exceed one occupant per 7 square feet ( m2)ofoccupiable floor space. Where required by the building official,an approved aisle, seating or fixed equipment diagram substanti-ating any increase in occupant load shall be submitted. Whererequired by the building official, such diagram shall be Posting of occupant room or space that isan assembly occupancy shall have the occupant load of theroom or space posted in a conspicuous place, near the main exitor exit access doorway from the room or space. Posted signsshall be of an approved legible permanent design and shall bemaintained by the owner or authorized Exiting from multiple exits serve morethan one floor, only the occupant load of each floor consideredindividually shall be used in computing the required capacityof the exits at that floor, provided that the exit capacity shall notdecrease in the direction of egress Egress means of egress fromfloors above and below converge at an intermediate level, thecapacity of the means of egress from the point of convergenceshall not be less than the sum of the two OREGON STRUCTURAL SPECIALTY CODE209MEANS OF EGRESS :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:18 PMColor profile: Generic CMYK printer profileComposite Default screenTABLE FLOOR AREA ALLOWANCES PER OCCUPANTFUNCTION OF SPACEFLOOR AREA IN PER OCCUPANTAccessory storage areas, mechanicalequipment room300 grossAgricultural building300 grossAircraft hangars500 grossAirport terminalBaggage claimBaggage handlingConcourseWaiting areas20 gross300 gross100 gross15 grossAssemblyGaming floors (keno, slots, etc.)11 grossAssembly with fixed seatsSee Section without fixed seatsConcentrated (chairs only not fixed)Standing spaceUnconcentrated (tables and chairs)7 net5 net15 netBowling centers, allow 5 persons for eachlane including 15 feet of runway, and foradditional areas7 netBusiness areas100 grossCourtrooms other than fixed seating areas40 netDay care35 netDormitories50 grossEducationalClassroom areaShops and other vocational room areas20 net50 netExercise rooms50 grossH-5 Fabrication and manufacturing areas200 grossIndustrial areas100 grossInstitutional areasInpatient treatment areasOutpatient areasSleeping areas240 gross100 gross120 grossKitchens, commercial200 grossLibraryReading roomsStack area50 net100 grossLocker rooms50 grossMercantileAreas on other floorsBasement and grade floor areasStorage, stock, shipping areas60 gross30 gross300 grossParking garages200 grossResidential200 grossSkating rinks, swimming poolsRink and poolDecks50 gross15 grossStages and platforms15 netWarehouses500 grossFor SI: 1 square foot = Mezzanine occupant load of a mezzaninelevel with egress onto a room or area below shall be added tothat room or area s occupant load, and the capacity of the exitsshall be designed for the total occupant load thus Fixed areas having fixed seats and aisles,the occupant load shall be determined by the number of fixedseats installed therein. The occupant load for areas in whichfixed seating is not installed, such as waiting spaces and wheel-chair spaces, shall be determined in accordance with and added to the number of fixed areas having fixed seating without dividing arms, theoccupant load shall not be less than the number of seats basedon one person for each 18 inches (457 mm) of seating occupant load of seating booths shall be based on oneperson for each 24 inches (610 mm) of booth seat length mea-sured at the backrest of the seating Outdoor , patios, courts and similar out-door areas accessible to and usable by the building occupantsshall be provided with means of egress as required by this chap-ter. The occupant load of such outdoor areas shall be assignedby the building official in accordance with the anticipated outdoor areas are to be used by persons in addition to theoccupants of the building, and the path of egress travel from theoutdoor areas passes through the building, means of egressrequirements for the building shall be based on the sum of theoccupant loads of the building plus the outdoor :1. Outdoor areas used exclusively for service of thebuilding need only have one means of Both outdoor areas associated with Group R-3 andindividual dwelling units of Group Multiple a building contains twoor more occupancies, the means of egress requirements shallapply to each portion of the building based on the occupancy ofthat space. Where two or more occupancies utilize portions ofthe same means of egress system, those egress componentsshall meet the more stringent requirements of all occupanciesthat are 1005EGRESS Minimum required egress means ofegress width shall not be less than required by this section. Thetotal width of means of egress in inches (mm) shall not be lessthan the total occupant load served by the means of egress mul-tiplied by the factors in Table and not less than specifiedelsewhere in this code. Multiple means of egress shall be sizedsuch that the loss of any one means of egress shall not reducethe available capacity to less than 50 percent of the requiredcapacity. The maximum capacity required from any story of abuilding shall be maintained to the termination of the means :Means of egress complying with Section OREGON STRUCTURAL SPECIALTY CODEMEANS OF :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:18 PMColor profile: Generic CMYK printer profileComposite Default screenTABLE WIDTH PER OCCUPANT SERVEDOCCUPANCYWITHOUTSPRINKLER SYSTEMWITHSPRINKLER SYSTEMaStairways(inches peroccupant)Other egresscomponents(inches peroccupant)Stairways(inches peroccupant)Other egresscomponents(inches peroccupant)Occupanciesother than thoselisted : H-1,H-2, H-3 and : SI: 1 inch = mm. NA = Not Buildings equipped throughout with an automatic sprinkler system in accor-dance with Section or Door opening into the path ofegress travel shall not reduce the required width to less thanone-half during the course of the swing. When fully open, thedoor shall not project more than 7 inches (178 mm) into therequired :The restrictions on a door swing shall not applyto doors within individual dwelling units and sleeping unitsof Group R-2 and dwelling units of Group 1006MEANS OF EGRESS Illumination means of egress, includingthe exit discharge, shall be illuminated at all times the buildingspace served by the means of egress is :1. Occupancies in Group Aisle accessways in Group Dwelling units and sleeping units in Groups R-1, R-2and Sleeping units of Group I Illumination means of egress illuminationlevel shall not be less than 1 foot-candle (11 lux) at the walkingsurface :For auditoriums, theaters, concert or opera hallsand similar assembly occupancies, the illumination at thewalking surface level is permitted to be reduced during per-formances to not less than foot-candle ( lux), pro-vided that the required illumination is automaticallyrestored upon activation of a premises fire alarm systemwhere such system is Illumination emergency power supply formeans of egress illumination shall normally be provided by thepremises electrical the event of power supply failure, an emergency electricalsystem shall automatically illuminate the following areas:1. Aisles and unenclosed egress stairways in rooms andspaces that require two or more means of Corridors, exit enclosures and exit passageways in build-ings required to have two or more Exterior egress components at other than the level of exitdischarge until exit discharge is accomplished for build-ings required to have two or more Interior exit discharge elements, as permitted in , in buildings required to have two or more Exterior landings, as required by Section , forexit discharge doorways in buildings required to havetwo or more emergency power system shall provide power for aduration of not less than 90 minutes and shall consist of storagebatteries, unit equipment or an on-site generator. The installa-tion of the emergency power system shall be in accordancewith Section Performance of lighting facilitiesshall be arranged to provide initial illumination that is at leastan average of 1 foot-candle (11 lux) and a minimum at anypoint of foot-candle (1 lux) measured along the path ofegress at floor level. Illumination levels shall be permitted todecline to foot-candle (6 lux) average and a minimum atany point of foot-candle ( lux) at the end of the emer-gency lighting time duration. A maximum-to-minimum illu-mination uniformity ratio of 40 to 1 shall not be 1007ACCESSIBLE MEANS OF EGRESSNot adopted by the State of Oregon (see Chapter 11).SECTION 1008DOORS, GATES AND of egress doors shall meet the require-ments of this section. Doors serving a means of egress systemshall meet the requirements of this section and Section provided for egress purposes in numbers greater thanrequired by this code shall meet the requirements of this of egress doors shall be readily distinguishable fromthe adjacent construction and finishes such that the doors areeasily recognizable as doors. Mirrors or similar reflectingmaterials shall not be used on means of egress doors. Means ofegress doors shall not be concealed by curtains, drapes, decora-tions or similar Size of minimum width of each dooropening shall be sufficient for the occupant load thereof andshall provide a clear width of not less than 32 inches (813mm). Clear openings of doorways with swinging doorsshall be measured between the face of the door and the stop,with the door open 90 degrees ( rad). Where this sectionrequires a minimum clear width of 32 inches (813 mm) anda door opening includes two door leaves without a mullion,one leaf shall provide a clear opening width of 32 inches(813 mm). The maximum width of a swinging door leafshall be 48 inches (1219 mm) nominal. Means of egressdoors in a Group I-2 occupancy used for the movement of2007 OREGON STRUCTURAL SPECIALTY CODE211MEANS OF EGRESS> :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:18 PMColor profile: Generic CMYK printer profileComposite Default screenbeds shall provide a clear width not less than inches(1054 mm). The height of doors shall not be less than 80inches (2032 mm).Exceptions:1. The minimum and maximum width shall not applyto door openings that are not part of the requiredmeans of egress in Group R-2 and R-3 Door openings to resident sleeping units in GroupI-3 occupancies shall have a clear width of not lessthan 28 inches (711 mm).3. Door openings to storage closets less than 10square feet ( m2) in area shall not be limited bythe minimum Width of door leafs in revolving doors that complywith Section shall not be Door openings within a dwelling unit or sleepingunit shall not be less than 78 inches (1981 mm) Exterior door openings in dwelling units andsleeping units, other than the required exit door,shall not be less than 76 inches (1930 mm) In other than Group R-1 occupancies, the mini-mum widths shall not apply to interior egress doorswithin a dwelling unit or sleeping unit that is notrequired to be adaptable or Door openings required to be accessible withinType B units shall comply with Section Projections into clear shall notbe projections into the required clear width lower than 34inches (864 mm) above the floor or ground. Projectionsinto the clear opening width between 34 inches (864mm) and 80 inches (2032 mm) above the floor or groundshall not exceed 4 inches (102 mm). Door doors shall be :1. Private garages, rooms within suites of health carefacilities, office areas, factory and storage areaswith an occupant load of 10 or Group I-3 occupancies used as a place of Critical or intensive care patient rooms withinsuites of health care Doors within or serving a single dwelling unit inGroups R-2 and In other than Group H occupancies, revolvingdoors complying with Section In other than Group H occupancies, horizontalsliding doors complying with Section permitted in a means of Power-operated doors in accordance with Doors serving a bathroom within an individualsleeping unit in Group shall swing in the direction of egress travel whereserving an occupant load of 50 or more persons or a GroupH opening force for interior side-swinging doors with-out closers shall not exceed a 5-pound (22 N) force. Forother side-swinging, sliding and folding doors, the doorlatch shall release when subjected to a 15-pound (67 N)force. The door shall be set in motion when subjected to a30-pound (133 N) force. The door shall swing to a full-openposition when subjected to a 15-pound (67 N) force. Forcesshall be applied to the latch Special doors and security grillesshall comply with the requirements of Sections Revolving doors shallcomply with the following:1. Each revolving door shall be capable of collapsinginto a bookfold position with parallel egress pathsproviding an aggregate width of 36 inches (914mm).2. A revolving door shall not be located within 10feet (3048 mm) of the foot of or top of stairs orescalators. A dispersal area shall be providedbetween the stairs or escalators and the The revolutions per minute (rpm) for a revolvingdoor shall not exceed those shown in Each revolving door shall have a side-hingedswinging door which complies with in the same wall and within 10 feet (3048mm) of the revolving DOOR SPEEDSINSIDE DIAMETER(feet-inches)POWER-DRIVEN-TYPESP EED CONTROL(rpm)MANUAL-TYPESPEED CONTROL(rpm)6-611127-010117-69118-09108- 6899-0899-67810-078For SI: 1 inch = mm, 1 foot = OREGON STRUCTURAL SPECIALTY CODEMEANS OF :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:19 PMColor profile: Generic CMYK printer profileComposite Default Egress revolving doorused as a component of a means of egress shall com-ply with Section and the following threeconditions:1. Revolving doors shall not be given credit formore than 50 percent of the required Each revolving door shall be credited with nomore than a 50-person Each revolving door shall be capable of beingcollapsed when a force of not more than 130pounds (572) is applied within 3 inches (76mm) of the outer edge of a Other than egress door used as other than a component of ameans of egress shall comply with The collapsing force of a revolving doornot used as a component of a means of egress shall notbe more than 180 pounds (801 N).Exception:A collapsing force in excess of 180pounds (801 N) is permitted if the collapsing forceis reduced to not more than 130 pounds (572)when at least one of the following conditions is sat-isfied:1. There is a power failure or power is removedto the device holding the door wings in There is an actuation of the automatic sprin-kler system where such system is There is an actuation of a smoke detectionsystem which is installed in accordance withSection 907 to provide coverage in areaswithin the building which are within 75 feet(22 860 mm) of the revolving There is an actuation of a manual controlswitch, in an approved location and clearlydefined, which reduces the holding force tobelow the 130-pound (572) force Power-operated means ofegress doors are operated by power, such as doors with aphotoelectric-actuated mechanism to open the door uponthe approach of a person, or doors with power-assistedmanual operation, the design shall be such that in theevent of power failure, the door is capable of beingopened manually to permit means of egress travel orclosed where necessary to safeguard means of forces required to open these doors manually shallnot exceed those specified in Section , exceptthat the force to set the door in motion shall not exceed 50pounds (220 N). The door shall be capable of swingingfrom any position to the full width of the opening inwhich such door is installed when a force is applied to thedoor on the side from which egress is doors shall comply with Power-assisted and low-energy doors shallcomply with BHMA :1. Occupancies in Group Horizontal sliding doors complying with Sec-tion For a biparting door in the emergency breakoutmode, a door leaf located within a multiple-leafopening shall be exempt from the minimum32-inch (813 mm) single-leaf requirement ofSection , provided a minimum 32-inch(813 mm) clear opening is provided when thetwo biparting leaves meeting in the center arebroken Horizontal sliding other thanGroup H occupancies, horizontal sliding doors permittedto be a component of a means of egress in accordancewith Exception 5 to Section shall comply withall of the following criteria:1. The doors shall be power operated and shall becapable of being operated manually in the event ofpower The doors shall be openable by a simple methodfrom both sides without special knowledge The force required to operate the door shall notexceed 30 pounds (133 N) to set the door in motionand 15 pounds (67 N) to close the door or open it tothe minimum required The door shall be openable with a force not toexceed 15 pounds (67 N) when a force of 250pounds (1100 N) is applied perpendicular to thedoor adjacent to the operating The door assembly shall comply with the applica-ble fire protection rating and, where rated, shall beself-closing or automatic closing by smoke detec-tion in accordance with Section , shall beinstalled in accordance with NFPA 80 and shallcomply with Section The door assembly shall have an integratedstandby power The door assembly power supply shall be electri-cally The door shall open to the minimum requiredwidth within 10 seconds after activation of theoperating Access-controlled egress doors in a means of egress in buildings with anoccupancy in Group A, B, E, M, R-1 or R-2 and entrancedoors to tenant spaces in occupancies in Groups A, B, E,M, R-1 and R-2 are permitted to be equipped with anapproved entrance and egress access control systemwhich shall be installed in accordance with all of the fol-lowing criteria:1. A sensor shall be provided on the egress sidearranged to detect an occupant approaching the2007 OREGON STRUCTURAL SPECIALTY CODE213MEANS OF :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:19 PMColor profile: Generic CMYK printer profileComposite Default screendoors. The doors shall be arranged to unlock by asignal from or loss of power to the Loss of power to that part of the access control sys-tem which locks the doors shall automaticallyunlock the The doors shall be arranged to unlock from a man-ual unlocking device located 40 inches to 48inches (1016 mm to 1219 mm) vertically above thefloor and within 5 feet (1524 mm) of the secureddoors. Ready access shall be provided to the man-ual unlocking device and the device shall beclearly identified by a sign that reads PUSH TOEXIT. When operated, the manual unlockingdevice shall result in direct interruption of powerto the lock independent of the access control sys-tem electronics and the doors shall remainunlocked for a minimum of 30 Activation of the building fire alarm system, ifprovided, shall automatically unlock the doors,and the doors shall remain unlocked until the firealarm system has been Activation of the building automatic sprinkler orfire detection system, if provided, shall automati-cally unlock the doors. The doors shall remainunlocked until the fire alarm system has been Entrance doors in buildings with an occupancy inGroup A, B, E or M shall not be secured from theegress side during periods that the building is opento the general Security Groups B, F, M and S, hor-izontal sliding or vertical security grilles are permitted atthe main exit and shall be openable from the inside with-out the use of a key or special knowledge or effort duringperiods that the space is occupied. The grilles shall remainsecured in the full-open position during the period ofoccupancy by the general public. Where two or moremeans of egress are required, not more than one-half of theexits or exit access doorways shall be equipped with hori-zontal sliding or vertical security Floor shall be a floor or landingon each side of a door. Such floor or landing shall be at thesame elevation on each side of the door. Landings shall belevel except for exterior landings, which are permitted tohave a slope not to exceed unit vertical in 12 units hori-zontal (2-percent slope).Exceptions:1. Doors serving individual dwelling units in GroupsR-2 and R-3 where the following A door is permitted to open at the top stepof an interior flight of stairs, provided thedoor does not swing over the top Screen doors and storm doors are permit-ted to swing over stairs or Exterior doors as provided for in Section ,Exception 1, and Section , which are not onan accessible In Group R-3 occupancies not required to beAccessible units, Type A units or Type B units, thelanding at an exterior doorway shall not be morethan inches (197 mm) below the top of thethreshold, provided the door, other than an exteriorstorm or screen door, does not swing over the Variations in elevation due to differences in finishmaterials, but not more than inch ( mm).5. Exterior decks, patios or balconies that are part ofType B dwelling units, have impervious surfacesand that are not more than 4 inches (102 mm)below the finished floor level of the adjacent inte-rior space of the dwelling Landings at shall have a widthnot less than the width of the stairway or the door, whicheveris greater. Doors in the fully open position shall not reduce arequired dimension by more than 7 inches (178 mm). Whena landing serves an occupant load of 50 or more, doors inany position shall not reduce the landing to less thanone-half its required width. Landings shall have a lengthmeasured in the direction of travel of not less than 44 inches(1118 mm).Exception:Landing length in the direction of travel inGroups R-3 and U and within individual units of GroupR-2 need not exceed 36 inches (914 mm). at doorways shall notexceed inch ( mm) in height for sliding doors serv-ing dwelling units or inch ( mm) for other thresholds and floor level changes greater than ( mm) at doorways shall be beveled with a slope notgreater than one unit vertical in two units horizontal(50-percent slope).Exception:The threshold height shall be limited to (197 mm) where the occupancy is Group R-2 orR-3; the door is an exterior door that is not a componentof the required means of egress; the door, other than anexterior storm or screen door does not swing over thelanding or step; and the doorway is not on an accessibleroute as required by Chapter 11 and is not part of anAccessible unit, Type A unit or Type B Door between two doors in aseries shall be 48 inches (1219 mm) minimum plus thewidth of a door swinging into the space. Doors in a seriesshall swing either in the same direction or away from thespace between the :1. The minimum distance between horizontal slidingpower-operated doors in a series shall be 48 inches(1219 mm).2. Storm and screen doors serving individual dwell-ing units in Groups R-2 and R-3 need not be spaced48 inches (1219 mm) from the other Doors within individual dwelling units in GroupsR-2 and R-3 other than within Type A OREGON STRUCTURAL SPECIALTY CODEMEANS OF :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:19 PMColor profile: Generic CMYK printer profileComposite Default Door as specifically permittedby this section egress doors shall be readily openable fromthe egress side without the use of a key or special knowledgeor handles, pulls, latches,locks and other operating devices on doors required to beaccessible by Chapter 11 shall not require tight grasping,tight pinching or twisting of the wrist to Hardware handles, pulls,latches, locks and other operating devices shall beinstalled 34 inches (864 mm) minimum and 48 inches(1219 mm) maximum above the finished floor. Locksused only for security purposes and not used for normaloperation are permitted at any :Access doors or gates in barrier walls andfences protecting pools, spas and hot tubs shall be per-mitted to have operable parts of the release of latch onself-latching devices at 54 inches (1370 mm) maxi-mum above the finished floor or ground, provided theself-latching devices are not also self-locking devicesoperated by means of a key, electronic opener or inte-gral combination Locks and and latches shallbe permitted to prevent operation of doors where any ofthe following exists:1. Places of detention or In buildings in occupancy Group A having anoccupant load of 300 or less, Groups B, F, M and S,and in places of religious worship, the main exte-rior door or doors are permitted to be equippedwith key-operated locking devices from the egressside The locking device is readily distinguish-able as locked, A readily visible durable sign is posted onthe egress side on or adjacent to the doorstating: THIS DOOR TO REMAINUNLOCKED WHEN BUILDING ISOCCUPIED. The sign shall be in letters 1inch (25 mm) high on a contrasting back-ground, The use of the key-operated locking deviceis revokable by the building official for Where egress doors are used in pairs, approvedautomatic flush bolts shall be permitted to be used,provided that the door leaf having the automaticflush bolts has no doorknob or Doors from individual dwelling or sleeping unitsof Group R occupancies having an occupant loadof 10 or less are permitted to be equipped with anight latch, dead bolt or security chain, providedsuch devices are openable from the inside withoutthe use of a key or Bolt operated flush bolts orsurface bolts are not :1. On doors not required for egress in individualdwelling units or sleeping Where a pair of doors serves a storage or equip-ment room, manually operated edge- or sur-face-mounted bolts are permitted on theinactive unlatching of any door orleaf shall not require more than one :1. Places of detention or Where manually operated bolt locks are permit-ted by Section Doors with automatic flush bolts as permittedby Section , Exception Doors from individual dwelling units andsleeping units of Group R occupancies as per-mitted by Section , Exception Delayed egress , listed,delayed egress locks shall be permitted to be installed ondoors serving any occupancy except Group A, E and Hoccupancies in buildings that are equipped throughoutwith an automatic sprinklersystem in accordance withSection or an approved automatic smoke or heatdetection system installed in accordance with Section 907,provided that the doors unlock in accordance with Items 1through 6 below. A building occupant shall not berequired to pass through more than one door equippedwith a delayed egress lock before entering an The doors unlock upon actuation of the automaticsprinkler system or automatic fire detection The doors unlock upon loss of power controllingthe lock or lock The door locks shall have the capability of beingunlocked by a signal from the fire command The initiation of an irreversible process which willrelease the latch in not more than 15 seconds whena force of not more than 15 pounds (67 N) isapplied for 1 second to the release device. Initia-tion of the irreversible process shall activate anaudible signal in the vicinity of the door. Once thedoor lock has been released by the application offorce to the releasing device, relocking shall be bymanual means :Where approved, a delay of notmore than 30 seconds is A sign shall be provided on the door located aboveand within 12 inches (305 mm) of the releasedevice reading: PUSH UNTIL ALARMSOUNDS. DOOR CAN BE OPENED IN 15  Emergency lighting shall be provided at the OREGON STRUCTURAL SPECIALTY CODE215MEANS OF :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:19 PMColor profile: Generic CMYK printer profileComposite Default Controlled egress locks shall be permitted to be installed on doorsserving Group I-1, I-2, R-3 occupancies subject tolicensure by the state, R-4 and SR occupancies pro-vided that the fire sprinkler system; the fire alarm sys-tem and the controlled egress are in compliance withAppendix SR, Sections 107 and Stairway stairway means ofegress doors shall be openable from both sides withoutthe use of a key or special knowledge or :1. Stairway discharge doors shall be openablefrom the egress side and shall only be lockedfrom the opposite This section shall not apply to doors arranged inaccordance with Section In stairways serving not more than four stories,doors are permitted to be locked from the sideopposite the egress side, provided they areopenable from the egress side and capable ofbeing unlocked simultaneously withoutunlatching upon a signal from the fire com-mand center, if present, or a signal by emer-gency personnel from a single location insidethe main entrance to the Panic and fire exit panic andfire exit hardware is installed, it shall comply with the fol-lowing:1. The actuating portion of the releasing device shallextend at least one-half of the door leaf The maximum unlatching force shall not exceed 15pounds (67 N).Each door in a means of egress from a Group A or E occu-pancy having an occupant load of 50 or more and any GroupH occupancy shall not be provided with a latch or lockunless it is panic hardware or fire exit :A main exit of a Group A occupancy in com-pliance with Section , Item rooms with equipment rated 1,200 amperes ormore and over 6 feet (1829 mm) wide that containovercurrent devices, switching devices or control deviceswith exit access doors must be equipped with panic hard-ware and doors must swing in the direction of balanced doors are used and panic hardware isrequired, the panic hardware shall be the push-pad type andthe pad shall not extend more then one-half the width of thedoor measured from the latch serving the means of egress system shallcomply with the requirements of this section. Gates used as acomponent in a means of egress shall conform to the applicablerequirements for :Horizontal sliding or swinging gates exceedingthe 4-foot (1219 mm) maximum leaf width limitation arepermitted in fences and walls surrounding a hardware is not required on gatessurrounding stadiums where such gates are under constantimmediate supervision while the public is present, andwhere safe dispersal areas based on 3 square feet ( m2)per occupant are located between the fence and enclosedspace. Such required safe dispersal areas shall not belocated less than 50 feet (15 240 mm) from the enclosedspace. See Section for means of egress from safe dis-persal or similar devices that restricttravel to one direction shall not be placed so as to obstruct anyrequired means of :Each turnstile or similar device shall be creditedwith no more than a 50-person capacity where all of the fol-lowing provisions are met:1. Each device shall turn free in the direction of egresstravel when primary power is lost, and upon the man-ual release by an employee in the Such devices are not given credit for more than 50percent of the required egress Each device is not more than 39 inches (991 mm) Each device has at least inches (419 mm) clearwidth at and below a height of 39 inches (991 mm)and at least 22 inches (559 mm) clear width at heightsabove 39 inches (991 mm).Where located as part of an accessible route, turnstiles andgates shall comply with Section High more than 39 inches(991 mm) high shall meet the requirements for Additional serving an occupant loadgreater than 300, each turnstile that is not portable shall havea side-hinged swinging door which conforms to within 50 feet (15 240 mm).SECTION Stairway width of stairways shall be deter-mined as specified in Section , but such width shall notbe less than 44 inches (1118 mm). See Section foraccessible means of egress :1. Stairways serving an occupant load of less than 50shall have a width of not less than 36 inches (914mm).2. Spiral stairways as provided for in Section Aisle stairs complying with Section Where an incline platform lift or stairway chairlift isinstalled on stairways serving occupancies in GroupR-3, or within dwelling units in occupancies in GroupR-2, a clear passage width not less than 20 inches (508mm) shall be provided. If the seat and platform can be2162007 OREGON STRUCTURAL SPECIALTY CODEMEANS OF :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:19 PMColor profile: Generic CMYK printer profileComposite Default screenfolded when not in use, the distance shall be measuredfrom the folded shall have a minimum head-room clearance of 80 inches (2032 mm) measured verticallyfrom a line connecting the edge of the nosings. Such headroomshall be continuous above the stairway to the point where theline intersects the landing below, one tread depth beyond thebottom riser. The minimum clearance shall be maintained thefull width of the stairway and :Spiral stairways complying with are permitted a 78-inch (1981 mm) headroom Stair treads and riser heights shall be 7inches (178 mm) maximum and 4 inches (102 mm) tread depths shall be 11 inches (279 mm) minimum. Theriser height shall be measured vertically between the leadingedges of adjacent treads. The tread depth shall be measuredhorizontally between the vertical planes of the foremost projec-tion of adjacent treads and at a right angle to the tread s leadingedge. Winder treads shall have a minimum tread depth of 11inches (279 mm) measured at a right angle to the tread s lead-ing edge at a point 12 inches (305 mm) from the side where thetreads are narrower and a minimum tread depth of 10 inches(254 mm).Exceptions:1. Alternating tread devices in accordance with Spiral stairways in accordance with Section Aisle stairs in assembly seating areas where the stairpitch or slope is set, for sightline reasons, by the slopeof the adjacent seating area in accordance with Sec-tion In Group R-3 occupancies; within dwelling units inGroup R-2 occupancies; and in Group U occupanciesthat are accessory to a Group R-3 occupancy or acces-sory to individual dwelling units in Group R-2 occu-pancies; the maximum riser height shall be (197 mm); the minimum tread depth shall be10 inches (254 mm); the minimum winder tread depthat the walk line shall be 10 inches (254 mm); and theminimum winder tread depth shall be 6 inches (152mm). A nosing not less than inch ( mm) butnot more than inches (32 mm) shall be providedon stairways with solid risers where the tread depth isless than 11 inches (279 mm).5. See the Section for the replacement of Winder treads are not permitted inmeans of egress stairways except within a dwelling :1. Curved stairways inaccordance with Spiral stairways inaccordance with Dimensional treads and risersshall be of uniform size and shape. The tolerance betweenthe largest and smallest riser height or between the largestand smallest tread depth shall not exceed inch ( ) in any flight of stairs. The greatest winder tread depthat the 12-inch (305 mm) walk line within any flight of stairsshall not exceed the smallest by more than inch ( ) measured at a right angle to the tread s leading :1. Nonuniform riser dimensions of aisle stairs com-plying with Section Consistently shaped winders, complying withSection , differing from rectangular treadsin the same stairway the bottom or top riser adjoins a sloping publicway, walkway or driveway having an established grade andserving as a landing, the bottom or top riser is permitted tobe reduced along the slope to less than 4 inches (102 mm) inheight, with the variation in height of the bottom or top risernot to exceed one unit vertical in 12 units horizontal(8-percent slope) of stairway width. The nosings or leadingedges of treads at such nonuniform height risers shall have adistinctive marking stripe, different from any other nosingmarking provided on the stair flight. The distinctive mark-ing stripe shall be visible in descent of the stair and shallhave a slip-resistant surface. Marking stripes shall have awidth of at least 1 inch (25 mm) but not more than 2 inches(51 mm). radius of curvature at the leading edgeof the tread shall be not greater than inch ( mm).Beveling of nosings shall not exceed inch ( mm).Risers shall be solid and vertical or sloped from the under-side of the leading edge of the tread above at an angle notmore than 30 degrees ( rad) from the vertical. The lead-ing edge (nosings) of treads shall project not more than (32 mm) beyond the tread below and all projectionsof the leading edges shall be of uniform size, including theleading edge of the floor at the top of a :1. Solid risers are not required for stairways that arenot required to comply with Section ,provided that the opening between treads does notpermit the passage of a sphere with a diameter of 4inches (102 mm).2. Solid risers are not required for occupancies inGroup Stairway shall be a floor or landing atthe top and bottom of each stairway. The width of landingsshall not be less than the width of stairways they serve. Everylanding shall have a minimum dimension measured in thedirection of travel equal to the width of the stairway. Suchdimension need not exceed 48 inches (1219 mm) where thestairway has a straight :1. Aisle stairs complying with Section OREGON STRUCTURAL SPECIALTY CODE217MEANS OF :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:20 PMColor profile: Generic CMYK printer profileComposite Default screen2. Doors opening onto a landing shall not reduce thelanding to less than one-half the required fully open, the door shall not project more than7 inches (178 mm) into a Stairway stairways shall be built ofmaterials consistent with the types permitted for the type ofconstruction of the building, except that wood handrails shallbe permitted for all types of Stairway walking walking surfaceof treads and landings of a stairway shall not be slopedsteeper than one unit vertical in 48 units horizontal (2-per-cent slope) in any direction. Stairway treads and landingsshall have a solid surface. Finish floor surfaces shall besecurely :In Group F, H and S occupancies, other thanareas of parking structures accessible to the public, open-ings in treads and landings shall not be prohibited pro-vided a sphere with a diameter of inches (29 mm)cannot pass through the Outdoor stairways and out-door approaches to stairways shall be designed so that waterwill not accumulate on walking Enclosures under walls and soffitswithin enclosed usable spaces under enclosed and unen-closed stairways shall be protected by 1-hour fire-resis-tance-rated construction or the fire-resistance rating of thestairway enclosure, whichever is greater. Access to theenclosed space shall not be directly from within the :Spaces under stairways serving and con-tained within a single residential dwelling unit in GroupR-2 or R-3 shall be permitted to be protected on theenclosed side with ( mm) gypsum shall be no enclosed usable space under exteriorexit stairways unless the space is completely enclosed in1-hour fire-resistance-rated construction. The open spaceunder exterior stairways shall not be used for any Vertical flight of stairs shall not have a verticalrise greater than 12 feet (3658 mm) between floor levels :Aisle stairs complying with Section Curved stairways with windertreads shall have treads and risers in accordance with and the smallest radius shall not be less than twice therequired width of the :The radius restriction shall not apply to curvedstairways for occupancies in Group R-3 and within individ-ual dwelling units in occupancies in Group Spiral stairways are permitted to beused as a component in the means of egress only within dwell-ing units or from a space not more than 250 square feet (23 m2)in area and serving not more than five occupants, or from gal-leries, catwalks and gridirons in accordance with spiral stairway shall have a inch (191 mm) minimumclear tread depth at a point 12 inches (305 mm) from the narrowedge. The risers shall be sufficient to provide a headroom of 78inches (1981 mm) minimum, but riser height shall not be morethan inches (241 mm). The minimum stairway width shallbe 26 inches (660 mm). Alternating tread tread devicesare limited to an element of a means of egress in buildings ofGroups F, H and S from a mezzanine not more than 250 squarefeet (23 m2) in area and which serves not more than five occu-pants; in buildings of Group I-3 from a guard tower, observa-tion station or control room not more than 250 square feet (23m2) in area and for access to unoccupied Handrails of alternating tread shall be provided on both sides of alternating treaddevices and shall comply with Section Treads of alternating tread devices shall have a minimum projected tread of 5inches (127 mm), a minimum tread depth of inches (216mm), a minimum tread width of 7 inches (178 mm) and amaximum riser height of inches (241 mm). The initialtread of the device shall begin at the same elevation as theplatform, landing or floor :Alternating tread devices used as an elementof a means of egress in buildings from a mezzanine areanot more than 250 square feet (23 m2) in area whichserves not more than five occupants shall have a mini-mum projected tread of inches (216 mm) with a mini-mum tread depth of inches (267 mm). The rise to thenext alternating tread surface should not be more than 8inches (203 mm). shall have handrails on eachside and shall comply with Section 1012. Where glass is usedto provide the handrail, the handrail shall also comply withSection :1. Aisle stairs complying with Section 1025 providedwith a center handrail need not have additional Stairways within dwelling units, spiral stairways andaisle stairs serving seating only on one side are per-mitted to have a handrail on one side Decks, patios and walkways that have a single changein elevation where the landing depth on each side ofthe change of elevation is greater than what isrequired for a landing do not require In Group R-3 occupancies, a change in elevation con-sisting of a single riser at an entrance or egress doordoes not require Changes in room elevations of only one riser withindwelling units and sleeping units in Group R-2 andR-3 occupancies do not require Stairway to buildings located four or morestories in height above grade plane, one stairway shall extend tothe roof surface, unless the roof has a slope steeper than fourunits vertical in 12 units horizontal (33-percent slope). In2182007 OREGON STRUCTURAL SPECIALTY CODEMEANS OF EGRESS :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:20 PMColor profile: Generic CMYK printer profileComposite Default screenbuildings without an occupied roof, access to the roof from thetop story shall be permitted to be by an alternating tread deviceor a ship stair or ladder that is constructed of steel and is a mini-mum of 30 inches (762 mm) between handrails; has a rise andrun of the stair or ladder of 12 inches (305 mm) maximum and 4inches (102 mm) minimum, respectively; and has handrailsprovided on both sides of the stair or Roof a stairway is provided to aroof, access to the roof shall be provided through a pent-house complying with Section :In buildings without an occupied roof,access to the roof shall be permitted to be a roof hatch ortrap door not less than 30 inches (762 mm) wide and 8feet (2438 mm) Protection at roof hatch theroof hatch opening providing the required access is locatedwithin 10 feet (3049 mm) of the roof edge, such roof accessor roof edge shall be protected by guards installed in accor-dance with the provisions of Section provisions of this section shall apply toramps used as a component of a means of :1. Other than ramps that are part of the accessible routesproviding access in accordance with Section aisles within assembly rooms or spaces shallconform with the provisions in Section Curb ramps shall comply with Section Vehicle ramps in parking garages for pedestrian exitaccess shall not be required to comply with through when they are not an accessi-ble route serving accessible parking spaces, otherrequired accessible elements or part of an accessiblemeans of used as part of a means of egress shallhave a running slope not steeper than one unit vertical in 12units horizontal (8-percent slope). The slope of other pedes-trian ramps shall not be steeper than one unit vertical in eightunits horizontal ( slope).Exception:An aisle ramp slope in occupancies of Group Ashall comply with Section Cross slope measured perpendicular to thedirection of travel of a ramp shall not be steeper than one unitvertical in 48 units horizontal (2-percent slope). Vertical rise for any ramp run shall be 30inches (762 mm) Minimum minimum dimensions ofmeans of egress ramps shall comply with Sections minimum width of a means of egressramp shall not be less than that required for corridors bySection The clear width of a ramp and the clearwidth between handrails, if provided, shall be 36 inches(914 mm) minimum headroom in all partsof the means of egress ramp shall not be less than 80 inches(2032 mm). of egress ramps shall notreduce in width in the direction of egress travel. Projectionsinto the required ramp and landing width are opening onto a landing shall not reduce the clearwidth to less than 42 inches (1067 mm). shall have landings at the bottom andtop of each ramp, points of turning, entrance, exits and at shall comply with Sections shall have a slope not steeper thanone unit vertical in 48 units horizontal (2-percent slope) inany direction. Changes in level are not landing shall be at least as wide as thewidest ramp run adjoining the landing length shall be 60 inches(1525 mm) :1. Landings in nonaccessible Group R-2 and R-3individual dwelling units are permitted to be 36inches (914 mm) Where the ramp is not a part of an accessible route,the length of the landing shall not be required to bemore than 48 inches (1220 mm) in the direction Change in changes in directionof travel occur at landings provided between ramp runs, thelanding shall be 60 inches by 60 inches (1524 mm by 1524mm) :Landings in nonaccessible Group R-2 andR-3 individual dwelling units are permitted to be 36inches by 36 inches (914 mm by 914 mm) doorways are located adjacentto a ramp landing, maneuvering clearances required by Sec-tion are permitted to overlap the required Ramp ramps shall be built of materi-als consistent with the types permitted for the type of construc-tion of the building, except that wood handrails shall bepermitted for all types of construction. Ramps used as an exitshall conform to the applicable requirements of through for exit Ramp surface of ramps shall be ofslip-resistant materials that are securely Outdoor ramps and outdoorapproaches to ramps shall be designed so that water will notaccumulate on walking with a rise greater than 6 inches(152 mm) shall have handrails on both sides. Handrails shallcomply with Section OREGON STRUCTURAL SPECIALTY CODE219MEANS OF :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:20 PMColor profile: Generic CMYK printer profileComposite Default Edge protection complying with Sec-tions or shall be provided on each side oframp runs and at each side of ramp :1. Edge protection is not required on ramps that are notrequired to have handrails, provided they have flaredsides that comply with Section curb ramp Edge protection is not required on the sides of ramplandings serving an adjoining ramp run or Edge protection is not required on the sides of ramplandings having a vertical dropoff of not more inch ( mm) within 10 inches (254 mm) hori-zontally of the required landing Curb, rail, wall or curb, rail, wall orbarrier shall be provided that prevents the passage of a4-inch-diameter (102 mm) sphere, where any portion of thesphere is within 4 inches (102 mm) of the floor or Extended floor or ground floor orground surface of the ramp run or landing shall extend 12inches (305 mm) minimum beyond the inside face of ahandrail complying with Section shall be provided where required bySection 1013 and shall be constructed in accordance with Sec-tion 1011EXIT Where and exit access doors shall bemarked by an approved exit sign readily visible from any direc-tion of egress travel. Access to exits shall be marked by readilyvisible exit signs in cases where the exit or the path of egresstravel is not immediately visible to the occupants. Exit signplacement shall be such that no point in a corridor is more than100 feet (30 480 mm) or the listed viewing distance for the sign,whichever is less, from the nearest visible exit :1. Exit signs are not required in rooms or areas thatrequire only one exit or exit Main exterior exit doors or gates that are obviouslyand clearly identifiable as exits need not have exitsigns where approved by the building Exit signs are not required in occupancies in Group Uand individual sleeping units or dwelling units inGroup R-1, R-2 or Exit signs are not required in sleeping areas in occu-pancies in Group In occupancies in Groups A-4 and A-5, exit signs arenot required on the seating side of vomitories or open-ings into seating areas where exit signs are providedin the concourse that are readily apparent from thevomitories. Egress lighting is provided to identifyeach vomitory or opening within the seating area in signs shall be internally or exter-nally :Tactile signs required by Section neednot be provided with Tactile exit tactile sign stating EXIT and comply-ing with Section shall be provided adjacent to each door toan egress stairway, an exit passageway and the exit Internally illuminated exit illumi-nated exit signs shall be listed and labeled and shall be installedin accordance with the manufacturer s instructions and Section2702. Exit signs shall be illuminated at all Externally illuminated exit illumi-nated exit signs shall comply with Sections exit sign and directional exit signshall have plainly legible letters not less than 6 inches (152mm) high with the principal strokes of the letters not less inch ( mm) wide. The word EXIT shall have let-ters having a width not less than 2 inches (51 mm) wide,except the letter I, and the minimum spacing between let-ters shall not be less than inch ( mm). Signs largerthan the minimum established in this section shall have letterwidths, strokes and spacing in proportion to their word EXIT shall be in high contrast with the back-ground and shall be clearly discernible when the means ofexit sign illumination is or is not energized. If a chevrondirectional indicator is provided as part of the exit sign, theconstruction shall be such that the direction of the chevrondirectional indicator cannot be readily Exit sign face of an exit signilluminated from an external source shall have an intensityof not less than 5 foot-candles (54 lux). Power signs shall be illuminated at alltimes. To ensure continued illumination for a duration of notless than 90 minutes in case of primary power loss, the signillumination means shall be connected to an emergency powersystem provided from storage batteries, unit equipment or anon-site generator. The installation of the emergency power sys-tem shall be in accordance with Section :Approved exit sign illumination means thatprovide continuous illumination independent of externalpower sources for a duration of not less than 90 minutes,in case of primary power loss, are not required to be con-nected to an emergency electrical Where for stairways and rampsshall be adequate in strength and attachment in accordancewith Section Handrails required for stairways by Sec-tion shall comply with Sections Handrails required for ramps by Section shallcomply with Sections through OREGON STRUCTURAL SPECIALTY CODEMEANS OF EGRESS :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:20 PMColor profile: Generic CMYK printer profileComposite Default height, measured above stair treadnosings, or finish surface of ramp slope shall be uniform, notless than 34 inches (864 mm) and not more than 38 inches (965mm). Handrail with a circularcross-section shall have an outside diameter of at least (32 mm) and not greater than 2 inches (51 mm) or shallprovide equivalent graspability. If the handrail is not circular, itshall have a perimeter dimension of at least 4 inches (102 mm)and not greater than inches (160 mm) with a maximumcross-section dimension of inches (57 mm). Edges shallhave a minimum radius of inch ( mm). surfaces shall be con-tinuous, without interruption by newel posts or other :1. Handrails within dwelling units are permitted to beinterrupted by a newel post at a stair Within a dwelling unit, the use of a volute, turnout orstarting easing is allowed on the lowest Handrail brackets or balusters attached to the bottomsurface of the handrail that do not project horizontallybeyond the sides of the handrail within inches (38mm) of the bottom of the handrail shall not be consid-ered obstructions. For each inch ( mm) ofadditional handrail perimeter dimension above 4inches (102 mm), the vertical clearance dimension inches (38 mm) shall be permitted to be reducedby inch (3 mm). Handrail shall return to a wall,guard or the walking surface or shall be continuous to the hand-rail of an adjacent stair flight or ramp run. At stairways wherehandrails are not continuous between flights, the handrailsshall extend horizontally at least 12 inches (305 mm) beyondthe top riser and continue to slope for the depth of one treadbeyond the bottom riser. At ramps where handrails are not con-tinuous between runs, the handrail shall extend horizontallyabove the landing 12 inches (305 mm) minimum beyond thetop and bottom :1. Handrails within a dwelling unit that is not required tobe accessible need extend only from the top riser tothe bottom Aisle handrails in Group A occupancies in accor-dance with Section space between a handrail and a wallor other surface shall be a minimum of inches (38 mm). Ahandrail and a wall or other surface adjacent to the handrailshall be free of any sharp or abrasive ramps, the clear width between hand-rails shall be 36 inches (914 mm) minimum. Projections intothe required width of stairways and ramps at each handrail shallnot exceed inches (114 mm) at or below the handrail into the required width shall not be limited abovethe minimum headroom height required in Section Intermediate shall haveintermediate handrails located in such a manner so that all por-tions of the stairway width required for egress capacity arewithin 30 inches (762 mm) of a handrail. On monumentalstairs, handrails shall be located along the most direct path ofegress Where shall be located alongopen-sided walking surfaces, mezzanines, industrial equip-ment platforms, stairways, ramps and landings that are locatedmore than 30 inches (762 mm) above the floor or grade shall be adequate in strength and attachment in accor-dance with Section Where glass is used to provide aguard or as a portion of the guard system, the guard shall alsocomply with Section 2407. Guards shall also be located alongglazed sides of stairways, ramps and landings that are locatedmore than 30 inches (762 mm) above the floor or grade belowwhere the glazing provided does not meet the strength andattachment requirements in Section :Guards are not required for the following loca-tions:1. On the loading side of loading docks or On the audience side of stages and raised platforms,including steps leading up to the stage and raised On raised stage and platform floor areas, such as run-ways, ramps and side stages used for entertainment At vertical openings in the performance area of stagesand At elevated walking surfaces appurtenant to stagesand platforms for access to and utilization of speciallighting or Along vehicle service pits not accessible to the In assembly seating where guards in accordance withSection are permitted and shall form a protective barrier not lessthan 42 inches (1067 mm) high, measured vertically above theleading edge of the tread, adjacent walking surface or :1. For occupancies in Group R-3, and within individualdwelling units in occupancies in Group R-2, guardswhose top rail also serves as a handrail shall have aheight not less than 34 inches (864 mm) and not morethan 38 inches (965 mm) measured vertically fromthe leading edge of the stair tread The height in assembly seating areas shall be in accor-dance with Section Opening guards shall have balustersor ornamental patterns such that a 4-inch-diameter (102 mm)sphere cannot pass through any opening up to a height of 342007 OREGON STRUCTURAL SPECIALTY CODE221MEANS OF :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:21 PMColor profile: Generic CMYK printer profileComposite Default screeninches (864 mm). From a height of 34 inches (864 mm) to 42inches (1067 mm) above the adjacent walking surfaces, asphere 8 inches (203 mm) in diameter shall not :1. The triangular openings formed by the riser, tread andbottom rail at the open side of a stairway shall be of amaximum size such that a sphere of 6 inches (152mm) in diameter cannot pass through the At elevated walking surfaces for access to and use ofelectrical, mechanical or plumbing systems or equip-ment, guards shall have balusters or be of solid mate-rials such that a sphere with a diameter of 21 inches(533 mm) cannot pass through any In areas that are not open to the public within occu-pancies in Group I-3, F, H or S, balusters, horizontalintermediate rails or other construction shall not per-mit a sphere with a diameter of 21 inches (533 mm) topass through any In assembly seating areas, guards at the end of aisleswhere they terminate at a fascia of boxes, balconiesand galleries shall have balusters or ornamental pat-terns such that a 4-inch-diameter (102 mm) spherecannot pass through any opening up to a height of 26inches (660 mm). From a height of 26 inches (660mm) to 42 inches (1067 mm) above the adjacentwalking surfaces, a sphere 8 inches (203 mm) indiameter shall not Within individual dwelling units and sleeping units inGroup R-2 and R-3 occupancies, openings for requiredguards on the sides of stair treads shall not allow asphere of inches (111 mm) to pass Screen and decks which are enclosedwith insect screening shall be provided with guards where thewalking surface is located more than 30 inches (762 mm) abovethe floor or grade Mechanical shall be provided whereappliances, equipment, fans, roof hatch openings or other compo-nents that require service are located within 10 feet (3048 mm) ofa roof edge or open side of a walking surface and such edge oropen side is located more than 30 inches (762 mm) above thefloor, roof or grade below. The guard shall be constructed so as toprevent the passage of a 21-inch-diameter (533 mm) sphere. Theguard shall extend not less than 30 inches (762 mm) beyond eachend of such appliance, equipment, fan or Roof shall be provided where the roofhatch opening is located within 10 feet (3048 mm) of a roofedge or open side of a walking surface and such edge or openside is located more than 30 inches (762 mm) above the floor,roof or grade below. The guard shall be constructed so as to pre-vent the passage of a 21-inch-diameter (533 mm) 1014EXIT exit access arrangement shall complywith Sections 1014 through 1017 and the applicable provisionsof Sections 1003 through Egress through intervening throughintervening spaces shall comply with this Egress from a room or space shall not pass throughadjoining or intervening rooms or areas, except wheresuch adjoining rooms or areas are accessory to the areaserved, are not a high-hazard occupancy and provide adiscernible path of egress travel to an :Means of egress are not prohibitedthrough adjoining or intervening rooms or spaces in aGroup H, S or F occupancy when the adjoining orintervening rooms or spaces are the same or a lesserhazard occupancy Egress shall not pass through kitchens, storage rooms,closets or spaces used for similar :1. Means of egress are not prohibited through akitchen area serving adjoining rooms constitut-ing part of the same dwelling unit or Means of egress are not prohibited throughstockrooms in Group M occupancies when allof the following are The stock is of the same hazard classifica-tion as that found in the main retail area; Not more than 50 percent of the exitaccess is through the stockroom; The stockroom is not subject to lockingfrom the egress side; There is a demarcated, minimum44-inch-wide (1118 mm) aisle definedby full or partial height fixed walls orsimilar construction that will maintainthe required width and lead directlyfrom the retail area to the exit An exit access shall not pass through a roomthat can be locked to prevent Means of egress from dwelling units or sleep-ing areas shall not lead through other sleepingareas, toilet rooms or Multiple more than one tenantoccupies any one floor of a building or structure, each tenantspace, dwelling unit and sleeping unit shall be provided withaccess to the required exits without passing through adja-cent tenant spaces, dwelling units and sleeping :Means of egress shall not be prohibitedthrough adjoining tenant space where such rooms orspaces occupy less than 10 percent of the area of the ten-ant space through which they pass; are the same or simi-lar occupancy group; a discernable path of egress travelto an exit is provided; and the means of egress into theadjoining space is not subject to locking from the egressside. A required means of egress serving the larger tenantspace shall not pass through the smaller tenant space OREGON STRUCTURAL SPECIALTY CODEMEANS OF :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:21 PMColor profile: Generic CMYK printer profileComposite Default Group rooms or suites in Group I-2occupancies shall have an exit access door leading directlyto a :1. Rooms with exit doors opening directly to the out-side at ground Patient sleeping rooms are permitted to have oneintervening room if the intervening room is notused as an exit access for more than eight Special nursing suites are permitted to have oneintervening room where the arrangement allowsfor direct and constant visual supervision by nurs-ing For rooms other than patient sleeping rooms locatedwithin a suite, exit access travel from within thesuite shall be permitted through one interveningroom where the travel distance to the exit accessdoor is not greater than 100 feet (30 480 mm).5. For rooms other than patient sleeping roomslocated within a suite, exit access travel fromwithin the suite shall be permitted through twointervening rooms where the travel distance to theexit access door is not greater than 50 feet (15 240mm).Suites of sleeping rooms shall not exceed 5,000 squarefeet (465 m2). Suites of rooms other than patient sleepingrooms shall not exceed 10,000 square feet (929 m2). Anypatient sleeping room, or any suite that includes patientsleeping rooms, of more than 1,000 square feet (93 m2)shall have at least two exit access doors remotely locatedfrom each other. Any room or suite of rooms other thanpatient sleeping rooms of more than 2,500 square feet (232m2) shall have at least two access doors remotely locatedfrom each other. The travel distance between any point in aGroup I-2 occupancy and an exit access door in the roomshall not exceed 50 feet (15 240 mm). The travel distancebetween any point in a suite of sleeping rooms and an exitaccess door of that suite shall not exceed 100 feet (30 480mm). Common path of egress occupancies otherthan Groups H-1, H-2 and H-3, the common path of egresstravel shall not exceed 75 feet (22 860 mm). In Group H-1, H-2and H-3 occupancies, the common path of egress travel shallnot exceed 25 feet (7620 mm). For common path of egresstravel in Group A occupancies having fixed seating, see Sec-tion :1. The length of a common path of egress travel inGroup B, F and S occupancies shall not be more than100 feet (30 480 mm), provided that the building isequipped throughout with an automatic sprinkler sys-tem installed in accordance with Section Where a tenant space in Group B, S and U occupan-cies has an occupant load of not more than 30, thelength of a common path of egress travel shall not bemore than 100 feet (30 480 mm).3. The length of a common path of egress travel in aGroup I-3 occupancy shall not be more than 100 feet(30 480 mm).4. The length of a common path of egress travel in aGroup R-2 occupancy shall not be more than 125 feet(38 100 mm), provided that the building is protectedthroughout with an approved automatic sprinkler sys-tem in accordance with Section serving as a portion of the exit access inthe means of egress system shall comply with the require-ments of this section. Aisles shall be provided from all occu-pied portions of the exit access which contain seats, tables,furnishings, displays and similar fixtures or serving assembly areas, other than seating at tables,shall comply with Section 1025. Aisles serving reviewingstands, grandstands and bleachers shall also comply with Sec-tion required width of aisles shall be :Doors, when fully opened, and handrails shallnot reduce the required width by more than 7 inches (178mm). Doors in any position shall not reduce the requiredwidth by more than one-half. Other nonstructural projec-tions such as trim and similar decorative features are permit-ted to project into the required width inches (38 mm)from each Aisles in Groups B and Group B and Moccupancies, the minimum clear aisle width shall be deter-mined by Section for the occupant load served, butshall not be less than 36 inches (914 mm).Exception:Nonpublic aisles serving less than 50 peopleand not required to be accessible by Chapter 11 need notexceed 28 inches (711 mm) in Aisle accessways in Group aisleaccessway shall be provided on at least one side of each ele-ment within the merchandise pad. The minimum clearwidth for an aisle accessway not required to be accessibleshall be 30 inches (762 mm). The required clear width of theaisle accessway shall be measured perpendicular to the ele-ments and merchandise within the merchandise pad. The30-inch (762 mm) minimum clear width shall be maintainedto provide a path to an adjacent aisle or aisle accessway. Thecommon path of travel shall not exceed 30 feet (9144 mm)from any point in the merchandise :For areas serving not more than 50 occu-pants, the common path of travel shall not exceed 75 feet(22 880 mm). Seating at seating is located at atable or counter and is adjacent to an aisle or aisleaccessway, the measurement of required clear width of theaisle or aisle accessway shall be made to a line 19 inches(483 mm) away from and parallel to the edge of the table orcounter. The 19-inch (483 mm) distance shall be measuredperpendicular to the side of the table or counter. In the caseof other side boundaries for aisle or aisle accessways, the2007 OREGON STRUCTURAL SPECIALTY CODE223MEANS OF :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:21 PMColor profile: Generic CMYK printer profileComposite Default screenclear width shall be measured to walls, edges of seatingand tread edges, except that handrail projections are :Where tables or counters are served by fixedseats, the width of the aisle accessway shall be measuredfrom the back of the Aisle accessway for tables and accessways serving arrangements of seating attables or counters shall have sufficient clear width to con-form to the capacity requirements of Section butshall not have less than the appropriate minimum clearwidth specified in Section Table and seating accessway shall provide a minimum of 12 inches (305mm) of width plus inch ( mm) of width for eachadditional 1 foot (305 mm), or fraction thereof, beyond12 feet (3658 mm) of aisle accessway length measuredfrom the center of the seat farthest from an :Portions of an aisle accessway having alength not exceeding 6 feet (1829 mm) and used by atotal of not more than four Table and seating aisle accessway length of travel along the aisle accessway shall notexceed 30 feet (9144 mm) from any seat to the pointwhere a person has a choice of two or more paths ofegress travel to separate Egress used for egress purposesshall conform to the same requirements as corridors for width,headroom, dead ends and Wall egress balconies shallbe separated from the interior of the building by walls andopening protectives as required for :Separation is not required where the exterioregress balcony is served by at least two stairs and adead-end travel condition does not require travel past anunprotected opening to reach a long side of an egress balconyshall be at least 50 percent open, and the open area above theguards shall be so distributed as to minimize the accumula-tion of smoke or toxic 1015EXIT AND EXIT ACCESS Exit or exit access doorways exits orexit access doorways from any space shall be provided whereone of the following conditions exists:1. The occupant load of the space exceeds the values inTable The common path of egress travel exceeds the limita-tions of Section Where required by Sections , and :Group I-2 occupancies shall comply with Sec-tion WITH ONE MEANS OF EGRESSOCCUPANCYMAXIMUM OCCUPANT LOADA, B, Ea, F, M, U49H-1, H-2, H-33H-4, H-5, I-1, I-3, I-4, R10S29a. Day care maximum occupant load is Three or more to three or more exitsshall be provided from a floor area where required by Sec-tion Exit or exit access doorway shall be located in a manner that makes their availabilityobvious. Exits shall be unobstructed at all times. Exit and exitaccess doorways shall be arranged in accordance with and Two exits or exit access twoexits or exit access doorways are required from any portionof the exit access, the exit doors or exit access doorwaysshall be placed a distance apart equal to not less thanone-half of the length of the maximum overall diagonaldimension of the building or area to be served measured in astraight line between exit doors or exit access or scissor stairs shall be counted as one :1. Where exit enclosures are provided as a portionof the required exit and are interconnected by a1-hour fire-resistance-rated corridor conform-ing to the requirements of Section 1017, therequired exit separation shall be measured alongthe shortest direct line of travel within the Where a building is equipped throughout with anautomatic sprinkler system in accordance withSection or , the separation dis-tance of the exit doors or exit access doorwaysshall not be less than one-third of the length of themaximum overall diagonal dimension of the Three or more exits or exit access access to three or more exits is required, at least twoexit doors or exit access doorways shall be arranged inaccordance with the provisions of Section Boiler, incinerator and furnace exitaccess doorways are required in boiler, incinerator and furnacerooms where the area is over 500 square feet (46 m2) and anyfuel-fired equipment exceeds 400,000 British thermal units(Btu) (422 000 KJ) input capacity. Where two exit access door-ways are required, one is permitted to be a fixed ladder or analternating tread device. Exit access doorways shall be sepa-rated by a horizontal distance equal to one-half the length of themaximum overall diagonal dimension of the Refrigeration machinery roomslarger than 1,000 square feet (93 m2) shall have not less than2242007 OREGON STRUCTURAL SPECIALTY CODEMEANS OF EGRESS :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:21 PMColor profile: Generic CMYK printer profileComposite Default screentwo exits or exit access doors. Where two exit access doorwaysare required, one such doorway is permitted to be served by afixed ladder or an alternating tread device. Exit access door-ways shall be separated by a horizontal distance equal toone-half the maximum horizontal dimension of portions of machinery rooms shall be within 150 feet (45720 mm) of an exit or exit access doorway. An increase in traveldistance is permitted in accordance with Section shall swing in the direction of egress travel, regardlessof the occupant load served. Doors shall be tight fitting Refrigerated rooms or or spaces hav-ing a floor area of 1,000 square feet (93 m2) or more, containinga refrigerant evaporator and maintained at a temperature below68 F (20 C), shall have access to not less than two exits or exitaccess distance shall be determined as specified in , but all portions of a refrigerated room or space shall bewithin 150 feet (45 720 mm) of an exit or exit access doorwhere such rooms are not protected by an approved automaticsprinkler system. Egress is allowed through adjoining refriger-ated rooms or :Where using refrigerants in quantities limitedto the amounts based on the volume set forth in theMechan-ical Stage means of two means of egress arerequired, based on the stage size or occupant load, one meansof egress shall be provided on each side of the Gallery, gridiron and catwalk means of means of egress from lighting and access catwalks, gal-leries and gridirons shall meet the requirements for occu-pancies in Group :1. A minimum width of 22 inches (559 mm) is per-mitted for lighting and access Spiral stairs are permitted in the means of Stairways required by this subsection need not Stairways with a minimum width of 22 inches (559mm), ladders, or spiral stairs are permitted in themeans of A second means of egress is not required from theseareas where a means of escape to a floor or to a roofis provided. Ladders, alternating tread devices orspiral stairs are permitted in the means of Ladders are permitted in the means of 1016EXIT ACCESS TRAVEL Travel distance shall be so locatedon each story such that the maximum length of exit accesstravel, measured from the most remote point within a story tothe entrance to an exit along the natural and unobstructed pathof egress travel, shall not exceed the distances given in the path of exit access includes unenclosed stairwaysor ramps within the exit access or includes unenclosed exitramps or stairways as permitted in Section , the distanceof travel on such means of egress components shall also beincluded in the travel distance measurement. The measurementalong stairways shall be made on a plane parallel and tangent tothe stair tread nosings in the center of the :1. Travel distance in open parking garages is permittedto be measured to the closest riser of open In outdoor facilities with open exit access compo-nents and open exterior stairs or ramps, travel dis-tance is permitted to be measured to the closest riserof a stair or the closest slope of the Where an exit stair is permitted to be unenclosed inaccordance with Exception 8 or 9 of Section ,the travel distance shall be measured from the mostremote point within a building to an exit ACCESS TRAVEL DISTANCEaOCCUPANCYWITHOUT SPRINKLERSYSTEM(feet)WITH SPRINKLERSYSTEM(feet)A, E, F-1, I-1, M,R, S-1200250bB200300cF-2, S-2, U300400cH-1Not Permitted75cH-2Not Permitted100cH-3Not Permitted150cH-4Not Permitted175cH-5Not Permitted200cI-2, I-3, I-4150200cFor SI: 1 foot = See the following sections for modifications to exit access travel distancerequirements:Section 402: For the distance limitation in 404: For the distance limitation through an atrium For increased limitations in Groups F-1 and : For increased limitation in assembly : For increased limitation for assembly open-air : For buildings with one 31: For the limitation in temporary Buildings equipped throughout with an automatic sprinkler system in accor-dance with Section or See Section 903 for occupancieswhere automatic sprinkler systems in accordance with Section Buildings equipped throughout with an automatic sprinkler system in accor-dance with Section Roof vent buildings that are one story inheight, equipped with automatic heat and smoke roof ventscomplying with Section 910 and equipped throughout with anautomatic sprinkler systemin accordance with , the maximum exit access travel distance shall be 400feet (122 m) for occupancies in Group F-1 or OREGON STRUCTURAL SPECIALTY CODE225MEANS OF :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:22 PMColor profile: Generic CMYK printer profileComposite Default Exterior egress balcony distancesspecified in Section shall be increased up to an addi-tional 100 feet (30 480 mm) provided the last portion of the exitaccess leading to the exit occurs on an exterior egress balconyconstructed in accordance with Section The length ofsuch balcony shall not be less than the amount of the shall be fire-resistance ratedin accordance with Table The corridor walls requiredto be fire-resistance rated shall comply with Section 708 forfire :1. A fire-resistance rating is not required for corridors inan occupancy in Group E where each room that isused for instruction has at least one door directly tothe exterior and rooms for assembly purposes have atleast one-half of the required means of egress doorsopening directly to the exterior. Exterior doors speci-fied in this exception are required to be at A fire-resistance rating is not required for corridorscontained within a dwelling or sleeping unit in anoccupancy in Group A fire-resistance rating is not required for corridors inopen parking A fire-resistance rating is not required for corridors inan occupancy in Group B which is a space requiringonly a single means of egress complying with Corridor minimum corridor width shall beas determined in Section , but not less than 44 inches(1118 mm).Exceptions:1. Twenty-four inches (610 mm) For access to and uti-lization of electrical, mechanical or plumbing sys-tems or Thirty-six inches (914 mm) With a required occu-pant capacity of less than Thirty-six inches (914 mm) Within a dwelling Seventy-two inches (1829 mm) In Group E with acorridor having a required capacity of 100 or Seventy-two inches (1829 mm) In corridors serv-ing surgical Group I, health care centers for ambula-tory patients receiving outpatient medical care, whichcauses the patient to be not capable of Ninety-six inches (2438 mm) In Group I-2 in areaswhere required for bed Dead more than one exit or exit accessdoorway is required, the exit access shall be arranged such thatthere are no dead ends in corridors more than 20 feet (6096mm) in :1. In occupancies in Group I-3 of Occupancy Condition2, 3 or 4 (see Section ), the dead end in a corridorshall not exceed 50 feet (15 240 mm).2. In occupancies in Groups B and F where the buildingis equipped throughout with an automatic sprinklersystem in accordance with Section , thelength of dead-end corridors shall not exceed 50 feet(15 240 mm).3. A dead-end corridor shall not be limited in lengthwhere the length of the dead-end corridor is less times the least width of the dead-end Air movement in shall not serveas supply, return, exhaust, relief or ventilation air :1. Use of a corridor as a source of makeup air for exhaustsystems in rooms that open directly onto such corri-dors, including toilet rooms, bathrooms, dressingrooms, smoking lounges and janitor closets, shall bepermitted, provided that each such corridor is directlysupplied with outdoor air at a rate greater than the rateof makeup air taken from the OREGON STRUCTURAL SPECIALTY CODEMEANS OF EGRESSTABLE FIRE-RESISTANCE RATINGOCCUPANCYOCCUPANT LOAD SERVED BY CORRIDORREQUIRED FIRE-RESISTANCE RATING (hours)Without sprinkler systemWith sprinkler systemcH-1, H-2, H-3AllNot Permitted1H-4, H-5Greater than 30Not Permitted1A, B, E, F, M, S, UGreater than 3010RGreater than 10Not , I-4AllNot Permitted0I-1, I-3AllNot Permitted1ba. For requirements for occupancies in Group I-2, see Section For a reduction in the fire-resistance rating for occupancies in Group I-3, see Section Buildings equipped throughout with an automatic sprinkler system in accordance with Section or where :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:22 PMColor profile: Generic CMYK printer profileComposite Default screen2. Where located within a dwelling unit, the use of corri-dors for conveying return air shall not be Where located within tenant spaces of 1,000 squarefeet (93 m2) or less in area, utilization of corridors forconveying return air is Corridor of the space between thecorridor ceiling and the floor or roof structure above as areturn air plenum is permitted for one or more of the follow-ing conditions:1. The corridor is not required to be of fire-resis-tance-rated construction;2. The corridor is separated from the plenum byfire-resistance-rated construction;3. The air-handling system serving the corridor is shutdown upon activation of the air-handling unit smokedetectors required by theMechanical The air-handling system serving the corridor is shutdown upon detection of sprinkler waterflow wherethe building is equipped throughout with an auto-matic sprinkler system; or5. The space between the corridor ceiling and the flooror roof structure above the corridor is used as a com-ponent of an approved engineered smoke control Corridor corridorsshall be continuous from the point of entry to an exit, and shallnot be interrupted by intervening :Foyers, lobbies or reception rooms constructedas required for corridors shall not be construed as interven-ing shall comply with Sections 1018through 1023 and the applicable requirements of Sections 1003through 1013. An exit shall not be used for any purpose thatinterferes with its function as a means of egress. Once a givenlevel of exit protection is achieved, such level of protectionshall not be reduced until arrival at the exit Exterior exit or structures used forhuman occupancy shall have at least one exterior door thatmeets the requirements of Section Detailed exit doors shallcomply with the applicable requirements of Section exit doors shall leaddirectly to the exit discharge or the public 1019NUMBER OF EXITS AND Minimum number of rooms and spaceswithin each story shall be provided with and have access to theminimum number of approved independent exits required byTable based on the occupant load of the story, except asmodified in Section or For the purposes of thischapter, occupied roofs shall be provided with exits as requiredfor stories. The required number of exits from any story, base-ment or individual space shall be maintained until arrival atgrade or the public NUMBER OF EXITS FOR OCCUPANT LOADOCCUPANT LOAD(persons per story)MINIMUM NUMBER OF EXITS(per story)1-5002501-1,0003More than 1, Parking structures shall nothave less than two exits from each parking tier, except thatonly one exit is required where vehicles are mechanicallyparked. Vehicle ramps shall not be considered as requiredexits unless pedestrian facilities are means of egress from helistopsshall comply with the provisions of this chapter, providedthat landing areas located on buildings or structures shallhave two or more exits. For landing platforms or roof areasless than 60 feet (18 288 mm) long, or less than 2,000square feet (186 m2) in area, the second means of egress ispermitted to be a fire escape or ladder leading to the Multistory dwelling multistorydwelling units located in buildings of any height shall bepermitted to have a single exit from the dwelling unit, pro-vided all of the following criteria are met:1. The individual dwelling unit occupies not more thanthree stories; and2. The exit from the dwelling unit is located at the levelof exit discharge or is located to provide immediateaccess to not less than two approved independentexits from the story; and3. The dwelling unit complies with Section as aspace with one means of Stories with one one exit shall be requiredfrom stories as specified below:1. Stories meeting the limitations of Table Buildings of Group R-3 OREGON STRUCTURAL SPECIALTY CODE227MEANS OF EGRESSTABLE WITH ONE EXITSTORY ABOVEGRADE PLANEOCCUPANCYMAXIMUM OCCUPANTS(OR DWELLING UNITS) PERFLOOR ANDTRAVEL DISTANCE TO EXITFIRST STORYOR BASEMENTA, Bd, Ee, Fd, M, U, Sd49 occupants and 75 feettravel distanceH-2, H-33 occupants and 25 feettravel distanceH-4, H-5, I, R10 occupants and 75 feettravel distanceSa29 occupants and 100 feettravel distanceSECONDSTORYBb, F, M, Sa29 occupants and 75 feettravel distanceR-24 dwelling units and 50 feettravel distanceTHIRD STORYR-2c4 dwelling units and 50 feettravel distanceFor SI: 1 foot = For the required number of exits for parking structures, see Section For the required number of exits for air traffic control towers, see Section Buildings classified as Group R-2 equipped throughout with an automaticsprinkler system in accordance with Section or and pro-vided with emergency escape and rescue openings in accordance with Sec-tion Group B, F and S occupancies in buildings equipped throughout with anautomatic sprinkler system in accordance with Section shall havea maximum travel distance of 100 Day care occupancies shall have a maximum occupant load of Exit shall be continuous from thepoint of entry into the exit to the exit Exit door door arrangement shallmeet the requirements of Sections through 1020VERTICAL EXIT Enclosures exit stairways and inte-rior exit ramps shall be enclosed with fire barriers constructedin accordance with Section 706 or horizontal assemblies con-structed in accordance with Section 711, or both. Exit enclo-sures shall have a fire-resistance rating of not less than 2 hourswhere connecting four stories or more and not less than 1 hourwhere connecting less than four stories. The number of storiesconnected by the exit enclosure shall include any basementsbut not any mezzanines. An exit enclosure shall not be used forany purpose other than means of :1. In all occupancies, other than Group H and I occupan-cies, a stairway is not required to be enclosed whenthe stairway serves an occupant load of less than 10and the stairway complies with either Item or all cases, the maximum number of connecting openstories shall not exceed The stairway is open to not more than onestory above the story at the level of exit dis-charge; The stairway is open to not more than onestory below the story at the level of exit Exits in buildings of Group A-5 where all portions ofthe means of egress are essentially open to the outsideneed not be Stairways serving and contained within a single resi-dential dwelling unit or sleeping unit in Group R-1,R-2 or R-3 occupancies are not required to Stairways that are not a required means of egress ele-ment are not required to be enclosed where such stair-ways comply with Section Stairways in open parking structures that serve onlythe parking structure are not required to be Stairways in Group I-3 occupancies, as provided forin Section , are not required to be Means of egress stairways as required by are not required to be In other than Group H and I occupancies, a maximumof 50 percent of egress stairways serving one adjacentfloor are not required to be enclosed, provided at leasttwo means of egress are provided from both floorsserved by the unenclosed stairways. Any two suchinterconnected floors shall not be open to other exit stairways shall be remotely locatedas required in Section In other than Group H and I occupancies, interioregress stairways serving only the first and second sto-ries of a building equipped throughout with an auto-matic sprinkler system in accordance with are not required to be enclosed, provided atleast two means of egress are provided from bothfloors served by the unenclosed stairways. Such inter-connected stories shall not be open to other exit stairways shall be remotely locatedas required in Section Openings and enclosureopening protectives shall be in accordance with the require-ments of Section as permitted in Section , openings in exitenclosures other than unprotected exterior openings shall belimited to those necessary for exit access to the enclosurefrom normally occupied spaces and for egress from interior exit enclosures are extended to the exte-rior of a building by an exit passageway, the door assemblyfrom the exit enclosure to the exit passageway shall be pro-tected by a fire door assembly conforming to the require-ments in Section Fire door assemblies in exitenclosures shall comply with Section shall not open into an exit into and openingsthrough an exit enclosure are prohibited except for requiredexit doors, equipment and ductwork necessary for inde-2282007 OREGON STRUCTURAL SPECIALTY CODEMEANS OF EGRESSpendent pressurization, sprinkler piping, standpipes, elec-trical raceway for fire department communication systemsand electrical raceway serving the exit enclosure and termi-nating at a steel box not exceeding 16 square inches ( ). Such penetrations shall be protected in accordance withSection 712. There shall be no penetrations or communica-tion openings, whether protected or not, between adjacentexit and ductwork for exitenclosure ventilation as permitted by Section shallcomply with one of the following items:1. Such equipment and ductwork shall be located exte-rior to the building and shall be directly connected tothe exit enclosure by ductwork enclosed in construc-tion as required for Where such equipment and ductwork is locatedwithin the exit enclosure, the intake air shall be takendirectly from the outdoors and the exhaust air shall bedischarged directly to the outdoors, or such air shallbe conveyed through ducts enclosed in constructionas required for Where located within the building, such equipmentand ductwork shall be separated from the remainderof the building, including other mechanical equip-ment, with construction as required for each case, openings into the fire-resistance-rated con-struction shall be limited to those needed for maintenanceand operation and shall be protected by opening protectivesin accordance with Section 715 for shaft enclosure ventilation systems shall be independentof other building ventilation Exit enclosure exterior walls of anexit enclosure shall comply with the requirements of Section704 for exterior walls. Where nonrated walls or unprotectedopenings enclose the exterior of the stairway and the walls oropenings are exposed by other parts of the building at anangle of less than 180 degrees ( rad), the building exteriorwalls within 10 feet (3048 mm) horizontally of a nonratedwall or unprotected opening shall have a fire-resistance ratingof not less than 1 hour. Openings within such exterior wallsshall be protected by opening protectives having a fire protec-tion rating of not less than3/4hour. This construction shallextend vertically from the ground to a point 10 feet (3048mm) above the topmost landing of the stairway or to the roofline, whichever is Discharge identification stairway inan exit enclosure shall not continue below the level of exitdischarge unless an approved barrier is provided at the levelof exit discharge to prevent persons from unintentionallycontinuing into levels below. Directional exit signs shall beprovided as specified in Section Stairway floor number sign shall beprovided at each floor landing in interior exit enclosuresconnecting more than three stories designating the floorlevel, the terminus of the top and bottom of the stair enclo-sure and the identification of the stair. The signage shall alsostate the story of, and the direction to the exit discharge andthe availability of roof access from the stairway for the firedepartment. The sign shall be located 5 feet (1524 mm)above the floor landing in a position that is readily visiblewhen the doors are in the open and closed Smokeproof buildings required tocomply with Section 403 or 405, each of the exits of a build-ing that serves stories where the floor surface is locatedmore than 75 feet (22 860 mm) above the lowest level of firedepartment vehicle access or more than 30 feet (9144 mm)below the level of exit discharge serving such floor levelsshall be a smokeproof enclosure or pressurized stairway inaccordance with Section Enclosure smokeproof enclosure orpressurized stairway shall exit into a public way or intoan exit passageway, yard or open space having directaccess to a public way. The exit passageway shall bewithout other openings and shall be separated from theremainder of the building by 2-hour :1. Openings in the exit passageway serving asmokeproof enclosure are permitted where theexit passageway is protected and pressurized inthe same manner as the smokeproof enclosure,and openings are protected as required foraccess from other Openings in the exit passageway serving a pres-surized stairway are permitted where the exitpassageway is protected and pressurized in thesame manner as the pressurized A smokeproof enclosure or pressurized stair-way shall be permitted to egress through areason the level of discharge or vestibules as per-mitted by Section Enclosure to the stairwaywithin a smokeproof enclosure shall be by way of a vesti-bule or an open exterior :Access is not required by way of a vesti-bule or exterior balcony for stairways using the pres-surization alternative complying with 1021EXIT Exit passageways serving as an exitcomponent in a means of egress system shall comply with therequirements of this section. An exit passageway shall not beused for any purpose other than as a means of width of exit passageways shall be deter-mined as specified in Section but such width shall notbe less than 44 inches (1118 mm), except that exit passagewaysserving an occupant load of less than 50 shall not be less than36 inches (914 mm) in OREGON STRUCTURAL SPECIALTY CODE229MEANS OF EGRESS :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:23 PMColor profile: Generic CMYK printer profileComposite Default screenThe required width of exit passageways shall be :Doors, when fully opened, and handrails, shallnot reduce the required width by more than 7 inches (178mm). Doors in any position shall not reduce the requiredwidth by more than one-half. Other nonstructural projec-tions such as trim and similar decorative features are permit-ted to project into the required width inches (38 mm) oneach passageway enclosures shall havewalls, floors and ceilings of not less than 1-hour fire-resistancerating, and not less than that required for any connecting exitenclosure. Exit passageways shall be constructed as fire barri-ers in accordance with Section Openings and passageway openingprotectives shall be in accordance with the requirements ofSection as permitted in Section , openings in exit pas-sageways other than unexposed exterior openings shall be lim-ited to those necessary for exit access to the exit passagewayfrom normally occupied spaces and for egress from the exit interior exit enclosures are extended to the exterior of abuilding by an exit passageway, the door assembly from the exitenclosure to the exit passageway shall be protected by a fire doorconforming to the requirements in Section Fire doorassemblies in exit passageways shall comply with shall not open into an exit into and openings throughan exit passageway are prohibited except for required exitdoors, equipment and ductwork necessary for independentpressurization, sprinkler piping, standpipes, electrical racewayfor fire department communication and electrical racewayserving the exit passageway and terminating at a steel box notexceeding 16 square inches ( m2). Such penetrations shallbe protected in accordance with Section 712. There shall be nopenetrations or communicating openings, whether protected ornot, between adjacent exit 1022HORIZONTAL Horizontal exits serving as an exit ina means of egress system shall comply with the requirements ofthis section. A horizontal exit shall not serve as the only exitfrom a portion of a building, and where two or more exits arerequired, not more than one-half of the total number of exits ortotal exit width shall be horizontal :1. Horizontal exits are permitted to comprise two-thirdsof the required exits from any building or floor areafor occupancies in Group Horizontal exits are permitted to comprise 100 per-cent of the exits required for occupancies in GroupI-3. At least 6 square feet ( m2) of accessible spaceper occupant shall be provided on each side of the hor-izontal exit for the total number of people in fire compartment for which credit is allowed in con-nection with a horizontal exit shall not be required to have astairway or door leading directly outside, provided the adjoin-ing fire compartments have stairways or doors leading directlyoutside and are so arranged that egress shall not require theoccupants to return through the compartment from whichegress area into which a horizontal exit leads shall be providedwith exits adequate to meet the occupant requirements of thischapter, but not including the added occupant capacityimposed by persons entering it through horizontal exits fromanother area. At least one of its exits shall lead directly to theexterior or to an exit separation between buildings or ref-uge areas connected by a horizontal exit shall be provided by afire wall complying with Section 705 or a fire barrier comply-ing with Section 706 and having a fire-resistance rating of notless than 2 hours. Opening protectives in horizontal exit wallsshall also comply with Section 715. The horizontal exit separa-tion shall extend vertically through all levels of the buildingunless floor assemblies have a fire-resistence rating of not lessthan 2 hours with no unprotected :A fire-resistance rating is not required at hori-zontal exits between a building area and an above-gradepedestrian walkway constructed in accordance with Section3104, provided that the distance between connected build-ings is more than 20 feet (6096 mm).Horizontal exit walls constructed as fire barriers shall becontinuous from exterior wall to exterior wall so as to dividecompletely the floor served by the horizontal Opening doors in horizontal exitsshall be self-closing or automatic-closing when activated by asmoke detector in accordance with Section Doors,where located in a cross-corridor condition, shall be auto-matic-closing by activation of a smoke detector installed inaccordance with Section Capacity of refuge refuge area of a horizon-tal exit shall be a space occupied by the same tenant or a publicarea and each such refuge area shall be adequate to accommo-date the original occupant load of the refuge area plus the occu-pant load anticipated from the adjoining compartment. Theanticipated occupant load from the adjoining compartmentshall be based on the capacity of the horizontal exit doors enter-ing the refuge area. The capacity of the refuge area shall becomputed based on a net floor area allowance of 3 square feet( m2) for each occupant to be accommodated :The net floor area allowable per occupant shallbe as follows for the indicated occupancies:1. Six square feet ( m2) per occupant for occupanciesin Group Fifteen square feet ( m2) per occupant for ambula-tory occupancies in Group OREGON STRUCTURAL SPECIALTY CODEMEANS OF :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:23 PMColor profile: Generic CMYK printer profileComposite Default screen3. Thirty square feet ( m2) per occupant fornonambulatory occupancies in Group 1023EXTERIOR EXIT RAMPS AND Exterior exit ramps and exitramps and stairways serving as an element of a required meansof egress shall comply with this :Exterior exit ramps and stairways for outdoorstadiums complying with Section , Exception Use in a means of exit ramps and stair-ways shall not be used as an element of a required means ofegress for Group I-2 occupancies. For occupancies in otherthan Group I-2, exterior exit ramps and stairways shall be per-mitted as an element of a required means of egress for buildingsnot exceeding six stories above grade plane or having occupiedfloors more than 75 feet (22 860 mm) above the lowest level offire department vehicle Open exit ramps and stairways serving asan element of a required means of egress shall be open on atleast one side. An open side shall have a minimum of 35 squarefeet ( m2) of aggregate open area adjacent to each floor leveland the level of each intermediate landing. The required openarea shall be located not less than 42 inches (1067 mm) abovethe adjacent floor or landing Side open areas adjoining exterior exitramps or stairways shall be either yards, courts or public ways;the remaining sides are permitted to be enclosed by the exteriorwalls of the exit ramps and stairways shall belocated in accordance with Section Exterior ramps and stairway ramps and stairways shall be separated from the interior ofthe building as required in Section Openings shall belimited to those necessary for egress from normally :1. Separation from the interior of the building is notrequired for occupancies, other than those in GroupR-1 or R-2, in buildings that are no more than two sto-ries above grade plane where the level of exit dis-charge is the first story above grade Separation from the interior of the building is notrequired where the exterior ramp or stairway is servedby an exterior ramp and/or balcony that connects tworemote exterior stairways or other approved exitswith a perimeter that is not less than 50 percent be considered open, the opening shall be a mini-mum of 50 percent of the height of the enclosing wall,with the top of the openings no less than 7 feet (2134mm) above the top of the Separation from the interior of the building is notrequired for an exterior ramp or stairway located in abuilding or structure that is permitted to have unen-closed interior stairways in accordance with Separation from the interior of the building is notrequired for exterior ramps or stairways connected toopen-ended corridors, provided that Items are The building, including corridors and rampsand/or stairs, shall be equipped throughoutwith an automatic sprinkler system in accor-dance with Section or The open-ended corridors comply with Sec-tion The open-ended corridors are connected oneach end to an exterior exit ramp or stairwaycomplying with Section At any location in an open-ended corridorwhere a change of direction exceeding 45 de-grees ( rad) occurs, a clear opening of notless than 35 square feet ( m2) or an exteriorramp or stairway shall be provided. Whereclear openings are provided, they shall be lo-cated so as to minimize the accumulation ofsmoke or toxic 1024EXIT shall discharge directly to the exterior ofthe building. The exit discharge shall be at grade or shall pro-vide direct access to grade. The exit discharge shall not reentera :1. A maximum of 50 percent of the number and capacityof the exit enclosures is permitted to egress throughareas on the level of discharge provided all of the fol-lowing are Such exit enclosures egress to a free and un-obstructed way to the exterior of the building,which way is readily visible and identifiablefrom the point of termination of the exit The entire area of the level of discharge is sep-arated from areas below by construction con-forming to the fire-resistance rating for theexit The egress path from the exit enclosure on thelevel of discharge is protected throughout byan approved automatic sprinkler system. Allportions of the level of discharge with accessto the egress path shall either be protectedthroughout with an automatic sprinkler sys-tem installed in accordance with or , or separated from theegress path in accordance with the require-ments for the enclosure of OREGON STRUCTURAL SPECIALTY CODE231MEANS OF :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:23 PMColor profile: Generic CMYK printer profileComposite Default screen2. A maximum of 50 percent of the number and capacityof the exit enclosures is permitted to egress through avestibule provided all of the following are The entire area of the vestibule is separatedfrom areas below by construction conformingto the fire-resistance rating for the exit The depth from the exterior of the building isnot greater than 10 feet (3048 mm) and thelength is not greater than 30 feet (9144 mm). The area is separated from the remainder ofthe level of exit discharge by constructionproviding protection at least the equivalent ofapproved wired glass in steel The area is used only for means of egress andexits directly to the Stairways in open parking garages complying withSection , Exception 5, are permitted to egressthrough the open parking garage at the level of Exit discharge capacity of the exit dis-charge shall be not less than the required discharge capacity ofthe exits being Exit discharge balconies, stairwaysand ramps shall be located at least 10 feet (3048 mm) fromadjacent lot lines and from other buildings on the same lotunless the adjacent building exterior walls and openings areprotected in accordance with Section 704 based on fire separa-tion Exit discharge discharge compo-nents shall be sufficiently open to the exterior so as to minimizethe accumulation of smoke and toxic Egress courts serving as a portion of theexit discharge in the means of egress system shall comply withthe requirements of Section width of egress courts shall be deter-mined as specified in Section , but such width shallnot be less than 44 inches (1118 mm), except as specifiedherein. Egress courts serving Group R-3 and U occupanciesshall not be less than 36 inches (914 mm) in required width of egress courts shall be unobstructedto a height of 7 feet (2134 mm).Exception:Doors, when fully opened, and handrailsshall not reduce the required width by more than 7 inches(178 mm). Doors in any position shall not reduce therequired width by more than one-half. Othernonstructural projections such as trim and similar deco-rative features are permitted to project into the requiredwidth inches (38 mm) from each an egress court exceeds the minimum requiredwidth and the width of such egress court is then reducedalong the path of exit travel, the reduction in width shall begradual. The transition in width shall be affected by a guardnot less than 36 inches (914 mm) in height and shall not cre-ate an angle of more than 30 degrees ( rad) with respectto the axis of the egress court along the path of egress no case shall the width of the egress court be less than therequired Construction and an egresscourt serving a building or portion thereof is less than 10feet (3048 mm) in width, the egress court walls shall havenot less than 1-hour fire-resistance-rated construction for adistance of 10 feet (3048 mm) above the floor of the within such walls shall be protected by openingprotectives having a fire protection rating of not less than3 :1. Egress courts serving an occupant load of less Egress courts serving Group Access to a public exit discharge shall pro-vide a direct and unobstructed access to a public :Where access to a public way cannot be pro-vided, a safe dispersal area shall be provided where all of thefollowing are met:1. The area shall be of a size to accommodate at least5 square feet ( m2) for each The area shall be located on the same lot at least 50feet (15 240 mm) away from the building The area shall be permanently maintained andidentified as a safe dispersal The area shall be provided with a safe and unob-structed path of travel from the in Group A which contain seats,tables, displays, equipment or other material shall comply withthis , grandstands, and foldingand telescopic seating shall comply with ICC Assembly main A occupancies that havean occupant load of greater than 300 shall be provided with amain exit. The main exit shall be of sufficient width to accom-modate not less than one-half of the occupant load, but suchwidth shall not be less than the total required width of all meansof egress leading to the exit. Where the building is classified asa Group A occupancy, the main exit shall front on at least onestreet or an unoccupied space of not less than 10 feet (3048mm) in width that adjoins a street or public :In assembly occupancies where there is nowell-defined main exit or where multiple main exits are pro-vided, exits shall be permitted to be distributed around theperimeter of the building provided that the total width ofegress is not less than 100 percent of the required Assembly other addition to having access to amain exit, each level in a Group A occupancy having an occu-pant load greater than 300 shall be provided with additional2322007 OREGON STRUCTURAL SPECIALTY CODEMEANS OF :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:23 PMColor profile: Generic CMYK printer profileComposite Default screenmeans of egress that shall provide an egress capacity for at leastone-half of the total occupant load served by that level andcomply with Section :In assembly occupancies where there is nowell-defined main exit or where multiple main exits are pro-vided, exits shall be permitted to be distributed around theperimeter of the building, provided that the total width ofegress is not less than 100 percent of the required Foyers and Group A-1 occupancies, wherepersons are admitted to the building at times when seats are notavailable and are allowed to wait in a lobby or similar space,such use of lobby or similar space shall not encroach upon therequired clear width of the means of egress. Such waiting areasshall be separated from the required means of egress by sub-stantial permanent partitions or by fixed rigid railings not lessthan 42 inches (1067 mm) high. Such foyer, if not directly con-nected to a public street by all the main entrances or exits, shallhave a straight and unobstructed corridor or path of travel toevery such main entrance or Interior balcony and gallery means of or galleries having a seating capacity of 50 or morelocated in Group A occupancies, at least two means of egressshall be provided, with one from each side of every balcony orgallery and at least one leading directly to an Enclosure of balcony stair-ways and other vertical openings shall be enclosed in an exitenclosure as provided in Section , except that stair-ways are permitted to be open between the balcony and themain assembly floor in occupancies such as theaters, placesof religious worship and auditoriums. At least one accessi-ble means of egress is required from a balcony or gallerylevel containing accessible seating locations in accordancewith Section Width of means of egress for clearwidth of aisles and other means of egress shall comply withSection where smoke-protected seating is not pro-vided and with Section or wheresmoke-protected seating is provided. The clear width shall bemeasured to walls, edges of seating and tread edges except forpermitted Without smoke clear width ofthe means of egress shall provide sufficient capacity inaccordance with all of the following, as applicable:1. At least inch ( mm) of width for each occupantserved shall be provided on stairs having riser heights7 inches (178 mm) or less and tread depths 11 inches(279 mm) or greater, measured horizontally betweentread At least inch ( mm) of additional stairwidth for each occupant shall be provided for inch ( mm) of riser height above 7 inches (178mm).3. Where egress requires stair descent, at least ( mm) of additional width for each occupantshall be provided on those portions of stair width hav-ing no handrail within a horizontal distance of 30inches (762 mm).4. Ramped means of egress, where slopes are steeperthan one unit vertical in 12 units horizontal (8-percentslope), shall have at least inch ( mm) of clearwidth for each occupant served. Level or rampedmeans of egress, where slopes are not steeper than oneunit vertical in 12 units horizontal (8-percent slope),shall have at least inch ( mm) of clear widthfor each occupant Smoke-protected clear width of themeans of egress for smoke-protected assembly seating shallnot be less than the occupant load served by the egress ele-ment multiplied by the appropriate factor in Table total number of seats specified shall be those within thespace exposed to the same smoke-protected is permitted between the specific values life safety evaluation, complying with NFPA 101, shall bedone for a facility utilizing the reduced width requirements ofTable for smoke-protected assembly :For an outdoor smoke-protected assemblywith an occupant load not greater than 18,000, the clearwidth shall be determined using the factors in Smoke of egress serving asmoke-protected assembly seating area shall be providedwith a smoke control system complying with Section909 or natural ventilation designed to maintain thesmoke level at least 6 feet (1829 mm) above the floor ofthe means of Roof smoke-protected assemblyseating area with a roof shall have the lowest portion ofthe roof deck not less than 15 feet (4572 mm) above thehighest aisle or aisle :A roof canopy in an outdoor stadiumshall be permitted to be less than 15 feet (4572 mm)above the highest aisle or aisle accessway providedthat there are no objects less than 80 inches (2032mm) above the highest aisle or aisle Automatic areas withwalls and ceilings in buildings or structures containingsmoke-protected assembly seating shall be protectedwith an approved automatic sprinkler system in accor-dance with Section :1. The floor area used for contests, performancesor entertainment provided the roof constructionis more than 50 feet (15 240 mm) above thefloor level and the use is restricted to low firehazard Press boxes and storage facilities less than1,000 square feet (93 m2) in Outdoor seating facilities where seating and themeans of egress in the seating area are essen-tially open to the OREGON STRUCTURAL SPECIALTY CODE233MEANS OF :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:24 PMColor profile: Generic CMYK printer profileComposite Default Width of means of egress for outdoorsmoke-protected clear width in inches(mm) of aisles and other means of egress shall be not lessthan the total occupant load served by the egress elementmultiplied by ( mm) where egress is by aisles andstairs and multiplied by ( mm) where egress is byramps, corridors, tunnels or :The clear width in inches (mm) of aisles andother means of egress shall be permitted to comply withSection for the number of seats in the outdoorsmoke-protected assembly where Section per-mits less and aisles shall be so located thatthe travel distance to an exit door shall not be greater than 200feet (60 960 mm) measured along the line of travel innonsprinklered buildings. Travel distance shall not be morethan 250 feet (76 200 mm) in sprinklered buildings. Whereaisles are provided for seating, the distance shall be measuredalong the aisles and aisle accessway without travel over or onthe :1. Smoke-protected assembly seating: The travel dis-tance from each seat to the nearest entrance to avomitory or concourse shall not exceed 200 feet (60960 mm). The travel distance from the entrance to thevomitory or concourse to a stair, ramp or walk on theexterior of the building shall not exceed 200 feet (60960 mm).2. Open-air seating: The travel distance from each seatto the building exterior shall not exceed 400 feet (122m). The travel distance shall not be limited in facilitiesof Type I or II Common path of egress common path ofegress travel shall not exceed 30 feet (9144 mm) from any seatto a point where an occupant has a choice of two paths of egresstravel to two :1. For areas serving less than 50 occupants, the commonpath of egress travel shall not exceed 75 feet (22 860mm).2. For smoke-protected assembly seating, the commonpath of egress travel shall not exceed 50 feet (15 240mm). Path through adjacent one of thetwo paths of travel is across the aisle through a row of seatsto another aisle, there shall be not more than 24 seatsbetween the two aisles, and the minimum clear widthbetween rows for the row between the two aisles shall be 12inches (305 mm) plus inch ( mm) for each addi-tional seat above seven in the row between :For smoke-protected assembly seating thereshall not be more than 40 seats between the two aislesand the minimum clear width shall be 12 inches (305mm) plus inch ( mm) for each additional Assembly aisles are occupied portionof any occupancy in Group A that contains seats, tables, dis-plays, similar fixtures or equipment shall be provided withaisles leading to exits or exit access doorways in accordancewith this section. Aisle accessways for tables and seating shallcomply with Section Minimum aisle minimum clear widthfor aisles shall be as shown:1. Forty-eight inches (1219 mm) for aisle stairs havingseating on each :Thirty-six inches (914 mm) where theaisle serves less than 50 Thirty-six inches (914 mm) for aisle stairs havingseating on only one Twenty-three inches (584 mm) between an aisle stairhandrail or guard and seating where the aisle is subdi-vided by a Forty-two inches (1067 mm) for level or rampedaisles having seating on both :1. Thirty-six inches (914 mm) where the aisleserves less that 50 Thirty inches (762 mm) where the aisle doesnot serve more than 14 OREGON STRUCTURAL SPECIALTY CODEMEANS OF EGRESSTABLE OF AISLES FOR SMOKE-PROTECTED ASSEMBLYTOTAL NUMBER OFSEATS IN THE SMOKE-PROTECTED ASSEMBLYOCCUPANCYINCHES OF CLEAR WIDTH PER SEAT SERVEDStairs and aisle steps withhandrails within 30 inchesStairs and aisle stepswithout handrailswithin 30 inchesPassageways, doorwaysand ramps not steeperthan 1 in 10 in slopeRamps steeperthan 1 in 10 in slopeEqual to or less than 5, , , , to or greater than 25, SI: 1 inch = :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:24 PMColor profile: Generic CMYK printer profileComposite Default screen5. Thirty-six inches (914 mm) for level or ramped aisleshaving seating on only one :1. Thirty inches (762 mm) where the aisle doesnot serve more than 14 Twenty-three inches (584 mm) between anaisle stair handrail and seating where an aisledoes not serve more than five rows on Aisle aisle width shall provide suffi-cient egress capacity for the number of persons accommo-dated by the catchment area served by the aisle. Thecatchment area served by an aisle is that portion of the totalspace that is served by that section of the aisle. In establish-ing catchment areas, the assumption shall be made that thereis a balanced use of all means of egress, with the number ofpersons in proportion to egress Converging aisles converge to forma single path of egress travel, the required egress capacity ofthat path shall not be less than the combined required capac-ity of the converging Uniform portions of aisles, whereegress is possible in either of two directions, shall be uni-form in required Assembly aisle end of an aisleshall terminate at cross aisle, foyer, doorway, vomitory orconcourse having access to an :1. Dead-end aisles shall not be greater than 20 feet(6096 mm) in Dead-end aisles longer than 20 feet (6096 mm) arepermitted where seats beyond the 20-foot (6096mm) dead-end aisle are no more than 24 seats fromanother aisle, measured along a row of seats hav-ing a minimum clear width of 12 inches (305 mm)plus inch ( mm) for each additional seatabove seven in the For smoke-protected assembly seating, thedead-end aisle length of vertical aisles shall notexceed a distance of 21 For smoke-protected assembly seating, a longerdead-end aisle is permitted where seats beyond the21-row dead-end aisle are not more than 40 seatsfrom another aisle, measured along a row of seatshaving an aisle accessway with a minimum clearwidth of 12 inches (305 mm) plus inch ( mm)for each additional seat above seven in the Assembly aisle shall be noobstructions in the required width of aisles except for hand-rails as provided in Section Clear width of aisle accessways serving seating rows have 14 or fewer seats, the minimum clearaisle accessway width shall not be less than 12 inches (305mm) measured as the clear horizontal distance from the back ofthe row ahead and the nearest projection of the row chairs have automatic or self-rising seats, the measure-ment shall be made with seats in the raised position. Where anychair in the row does not have an automatic or self-rising seat,the measurements shall be made with the seat in the down posi-tion. For seats with folding tablet arms, row spacing shall bedetermined with the tablet arm Dual rows of seating served by aislesor doorways at both ends, there shall not be more than 100seats per row. The minimum clear width of 12 inches (305mm) between rows shall be increased by inch ( mm)for every additional seat beyond 14 seats, but the minimumclear width is not required to exceed 22 inches (559 mm).Exception:For smoke-protected assembly seating, therow length limits for a 12-inch-wide (305 mm) aisleaccessway, beyond which the aisle accessway minimumclear width shall be increased, are in Table AISLE ACCESSWAYSTOTAL NUMBER OFSEATS IN THE SMOKE-PROTECTED ASSEMBLYOCCUPANCYMAXIMUM NUMBER OF SEATS PER ROWPERMITTED TO HAVE A MINIMUM 12-INCHCLEAR WIDTH AISLE ACCESSWAYAisle or doorway atboth ends of rowAisle or doorway atone end of row onlyLess than 4,0001474,0001577,00016810,00017813,0001 8916,00019919,000201022,000 and greater2111For SI: 1 inch = Single rows of seating served by anaisle or doorway at only one end of the row, the minimumclear width of 12 inches (305 mm) between rows shall beincreased by inch ( mm) for every additional seatbeyond seven seats, but the minimum clear width is notrequired to exceed 22 inches (559 mm).Exception:For smoke-protected assembly seating, therow length limits for a 12-inch-wide (305 mm) aisleaccessway, beyond which the aisle accessway minimumclear width shall be increased, are in Table Assembly aisle walking with a slopenot exceeding one unit vertical in eight units horizontal( slope) shall consist of a ramp having a slip-resis-tant walking surface. Aisles with a slope exceeding one unitvertical in eight units horizontal ( slope) shall con-sist of a series of risers and treads that extends across the fullwidth of aisles and complies with Sections depths shall be a minimum of 11inches (279 mm) and shall have dimensional :The tolerance between adjacent treads shallnot exceed inch ( mm).2007 OREGON STRUCTURAL SPECIALTY CODE235MEANS OF :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:24 PMColor profile: Generic CMYK printer profileComposite Default the gradient of aisle stairs is to bethe same as the gradient of adjoining seating areas, the riserheight shall not be less than 4 inches (102 mm) nor morethan 8 inches (203 mm) and shall be uniform within :1. Riser height nonuniformity shall be limited to theextent necessitated by changes in the gradient ofthe adjoining seating area to maintain adequatesightlines. Where nonuniformities exceed ( mm) between adjacent risers, the exactlocation of such nonuniformities shall be indicatedwith a distinctive marking stripe on each tread atthe nosing or leading edge adjacent to the nonuni-form risers. Such stripe shall be a minimum of 1inch (25 mm), and a maximum of 2 inches (51mm), wide. The edge marking stripe shall be dis-tinctively different from the contrasting Riser heights not exceeding 9 inches (229 mm)shall be permitted where they are necessitated bythe slope of the adjacent seating areas to Tread contrasting marking contrast-ing marking stripe shall be provided on each tread at the nos-ing or leading edge such that the location of each tread isreadily apparent when viewed in descent. Such stripe shallbe a minimum of 1 inch (25 mm), and a maximum of 2inches (51 mm), :The contrasting marking stripe is permittedto be omitted where tread surfaces are such that the loca-tion of each tread is readily apparent when viewed Seat places of assembly, the seats shall besecurely fastened to the :1. In places of assembly or portions thereof withoutramped or tiered floors for seating and with 200 orfewer seats, the seats shall not be required to be fas-tened to the In places of assembly or portions thereof with seatingat tables and without ramped or tiered floors for seat-ing, the seats shall not be required to be fastened to In places of assembly or portions thereof withoutramped or tiered floors for seating and with greaterthan 200 seats, the seats shall be fastened together ingroups of not less than three or the seats shall besecurely fastened to the In places of assembly where flexibility of the seatingarrangement is an integral part of the design and func-tion of the space and seating is on tiered levels, a max-imum of 200 seats shall not be required to be fastenedto the floor. Plans showing seating, tiers and aislesshall be submitted for Groups of seats within a place of assembly separatedfrom other seating by railings, guards, partial heightwalls or similar barriers with level floors and havingno more than 14 seats per group shall not be requiredto be fastened to the Seats intended for musicians or other performers andseparated by railings, guards, partial height walls orsimilar barriers shall not be required to be fastened tothe aisles having a slope exceedingone unit vertical in 15 units horizontal ( slope) andaisle stairs shall be provided with handrails located either at theside or within the aisle :1. Handrails are not required for ramped aisles having agradient no greater than one unit vertical in eight unitshorizontal ( slope) and seating on Handrails are not required if, at the side of the aisle,there is a guard that complies with the graspabilityrequirements of Discontinuous there is seat-ing on both sides of the aisle, the handrails shall be discon-tinuous with gaps or breaks at intervals not exceeding fiverows to facilitate access to seating and to permit crossingfrom one side of the aisle to the other. These gaps or breaksshall have a clear width of at least 22 inches (559 mm) andnot greater than 36 inches (914 mm), measured horizon-tally, and the handrail shall have rounded terminations Intermediate handrails areprovided in the middle of aisle stairs, there shall be an addi-tional intermediate handrail located approximately 12 inches(305 mm) below the main Assembly guards shall complywith Sections through Cross aisles located more than 30inches (762 mm) above the floor or grade below shall haveguards in accordance with Section an elevation change of 30 inches (762 mm) or lessoccurs between a cross aisle and the adjacent floor or gradebelow, guards not less than 26 inches (660 mm) above theaisle floor shall be :Where the backs of seats on the front of thecross aisle project 24 inches (610 mm) or more above theadjacent floor of the aisle, a guard need not be Sightline-constrained guard to the requirements of Section , a fascia orrailing system in accordance with the guard requirements ofSection 1013 and having a minimum height of 26 inches(660 mm) shall be provided where the floor or footboardelevation is more than 30 inches (762 mm) above the floor orgrade below and the fascia or railing would otherwise inter-fere with the sightlines of immediately adjacent seating. Atbleachers, a guard must be provided where the floor or foot-board elevation is more than 24 inches (610 mm) above the2362007 OREGON STRUCTURAL SPECIALTY CODEMEANS OF :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:24 PMColor profile: Generic CMYK printer profileComposite Default screenfloor or grade below and the fascia or railing would other-wise interfere with the sightlines of the immediately adja-cent Guards at the end of fascia or railingsystem complying with the guard requirements of Section1013 shall be provided for the full width of the aisle wherethe foot of the aisle is more than 30 inches (762 mm) abovethe floor or grade below. The fascia or railing shall be a min-imum of 36 inches (914 mm) high and shall provide a mini-mum 42 inches (1067 mm) measured diagonally betweenthe top of the rail and the nosing of the nearest Bench bench seating is used, the num-ber of persons shall be based on one person for each 18 inches(457 mm) of length of the 1026EMERGENCY ESCAPE AND addition to the means of egress required bythis chapter, provisions shall be made for emergency escapeand rescue in Group R and I-1 occupancies. Basements andsleeping rooms below the fourth story above grade plane shallhave at least one exterior emergency escape and rescue openingin accordance with this section. Where basements contain oneor more sleeping rooms, emergency egress and rescue open-ings shall be required in each sleeping room, but shall not berequired in adjoining areas of the basement. Such openingsshall open directly into a public way or to a yard or court thatopens to a public :1. In other than Group R-3 occupancies, buildingsequipped throughout with an approved automaticsprinkler system in accordance with or In other than Group R-3 occupancies, sleeping roomsprovided with a door to a fire-resistance-rated corri-dor having access to two remote exits in The emergency escape and rescue opening is permit-ted to open onto a balcony within an atrium in accor-dance with the requirements of Section 404, providedthe balcony provides access to an exit and the dwell-ing unit or sleeping unit has a means of egress that isnot open to the Basements with a ceiling height of less than 80 inches(2032 mm) shall not be required to have emergencyescape and rescue High-rise buildings in accordance with Section Emergency escape and rescue openings are notrequired from basements or sleeping rooms that havean exit door or exit access door that opens directly intoa public way or to a yard, court or exterior exit bal-cony that opens to a public Basements without habitable spaces and having nomore than 200 square feet ( m2) in floor area shallnot be required to have emergency escape Minimum escape and rescue open-ings shall have a minimum net clear opening of square feet( m2).Exception:The minimum net clear opening for emergencyescape and rescue grade-floor openings shall be 5 squarefeet ( m2). Minimum minimum net clearopening height dimension shall be 24 inches (610 mm). Theminimum net clear opening width dimension shall be 20inches (508 mm). The net clear opening dimensions shall bethe result of normal operation of the Maximum height from escape andrescue openings shall have the bottom of the clear opening notgreater than 44 inches (1118 mm) measured from the Operational escape and res-cue openings shall be operational from the inside of the roomwithout the use of keys or tools. Bars, grilles, grates or similardevices are permitted to be placed over emergency escape andrescue openings provided the minimum net clear opening sizecomplies with Section and such devices shall bereleasable or removable from the inside without the use of akey, tool or force greater than that which is required for normaloperation of the escape and rescue opening. Where such bars,grilles, grates or similar devices are installed in existing build-ings, smoke alarms shall be installed in accordance with Sec-tion regardless of the valuation of the Window emergency escape and rescue open-ing with a finished sill height below the adjacent ground levelshall be provided with a window well in accordance with Sec-tions and Minimum minimum horizontal area ofthe window well shall be 9 square feet ( m2), with a min-imum dimension of 36 inches (914 mm). The area of thewindow well shall allow the emergency escape and rescueopening to be fully Ladders or wells with a verticaldepth of more than 44 inches (1118 mm) shall be equippedwith an approved permanently affixed ladder or steps. Lad-ders or rungs shall have an inside width of at least 12 inches(305 mm), shall project at least 3 inches (76 mm) from thewall and shall be spaced not more than 18 inches (457 mm)on center ( ) vertically for the full height of the windowwell. The ladder or steps shall not encroach into the requireddimensions of the window well by more than 6 inches (152mm). The ladder or steps shall not be obstructed by theemergency escape and rescue opening. Ladders or stepsrequired by this section are exempt from the stairwayrequirements of Section OREGON STRUCTURAL SPECIALTY CODE237MEANS OF :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:25 PMColor profile: Generic CMYK printer profileComposite Default screen2382007 OREGON STRUCTURAL SPECIALTY :\data\CODES\STATE CODES\Oregon\2007\Structural Specialty\Final VP_Chgo\ , January 10, 2007 2:03:25 PMColor profile: Generic CMYK printer profileComposite Default screen
CHAPTER 10 MEANS OF EGRESS - iccsafe.org
CHAPTER 10 MEANS OF EGRESS SECTION 1001 ADMINISTRATION 1001.1 General. Buildings or portions thereof shall be pro-videdwithameansofegresssystemasrequiredbythischapter.
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