CHAPTER 10 MEANS OF EGRESS - eCodes

1 CHAPTER 10 MEANS OF EGRESSSECTION or portions thereof shall be pro-vided with ameans of egresssystem as required by this provisions of this CHAPTER shall control the design, con-struction and arrangement ofmeans of egresscomponentsrequired to provide anapproved MEANS of egressfrom struc-tures and portions Minimum shall be unlawful to alter abuilding or structure in a manner that will reduce the number ofexitsor the capacity of themeans of egressto less than requiredby this code.[F] of egressshall 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 anyaccessiblepoint ina building or facility to apublic unenclosedexit accesscomponent that defines andprovides a path of EGRESS portion of anexit accessthatleads to TREAD device that has aseries of steps between 50 and 70 degrees ( and rad)

2 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 usestairwayscan remain temporarily to await instructions or assis-tance during emergency seating supported on a dedicated struc-tural system and two or more rows high and is not a buildingelement (see Grandstands ).COMMON PATH OF EGRESS portion ofexit accesswhich the occupants are required to traverse beforetwo separate and distinct paths of EGRESS travel to twoexitsareavailable. Paths that merge are common paths of travel. Com-mon paths of EGRESS travel shall be included within the permit-ted travel enclosedexit accesscomponent that definesand provides a path of EGRESS travel to , door equipped with double-pivotedhardware so designed as to cause a semicounter balancedswing action when court oryardwhich provides access to apublic wayfor one or ESCAPE AND RESCUE window.

3 Door or other similar device that provides fora MEANS of escape and access for rescue in the event of an portion of ameans of egresssystem 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 betweentheexit accessand theexit discharge. Exits include exterior exitdoors at thelevel of exit discharge, verticalexit enclosures,exitpassageways,exterior exit stairways, exteriorexit rampsandhorizontal portion of ameans of egresssystem thatleads from any occupied portion of a building or structure to ACCESS door or access point along thepath of EGRESS travel from an occupied room, area or spacewhere the path of EGRESS enters an intervening room, corridor,unenclosedexit access stairor unenclosedexit access portion of ameans of egresssys-tem between the termination of anexitand apublic DISCHARGE.

4 LEVEL the point atwhich anexitterminates and anexit 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 theexit dischargeor thepublic , 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 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 horizontaldirection to theexit dischargeor thepublic EXIT hardware that islistedforuse onfire door continuous run of rectangular treads,windersorcombination thereof from one landing to OREGON STRUCTURAL SPECIALTY CODE2211M:\data\CODES\STATE CODES\Oregon\2010\Structural Specialty_Building\Final VP\ , February 05, 2010 12:49:49 PMColor profile.

5 Generic CMYK printer profileComposite Default screenFLOOR AREA, floor area within the inside per-imeter of theexterior wallsof 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 surroundingexterior wallsshall bethe usable area under the horizontal projection of the roof orfloor above. The gross floor area shall not include shafts withno openings or interior AREA, actual occupied area not includingunoccupied accessory areas such as corridors, stairways, toiletrooms, mechanical rooms and AND TELESCOPIC seatinghaving an overall shape and size that is capable of beingreduced for purposes of moving or storing and is not a seating supported on a dedicatedstructural system and two or more rows high and is not a build-ing element (see Bleachers ).

6 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 apublic way. A MEANS ofegress consists of three separate and distinct parts: theexitaccess, theexitand theexit merchandise pad is an area for dis-play of merchandise surrounded byaisles, 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 ofstairsand of landingsat the top ofstairway number of persons for which themeans of egressof 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 the property of emittinglight that continues for a length of time after excitation by visi-ble or invisible light has been street, alley or other parcel of land open tothe outside air leading to a street, that has been deeded.

7 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 interlockingstairwaysproviding twoseparate paths of EGRESS located within one stairwell by a self-contained powersource, other than batteries, and operated independently ofexternal power ASSEMBLY bymeans of egressthat is not subject to smoke accumu-lation within or under a change in elevation, consisting of one or more or moreflightsofstairs, either exterior orinterior, with the necessary landings and platforms connectingthem, to form a continuous and uninterrupted passage from onelevel to , is open on at leastone side, except for required structural columns, beams,hand-railsandguards.

8 The adjoining open areas shall be eitheryards,courtsorpublic ways. The other sides of the exteriorstairway need not be , meeting the defini-tion of anexterior , a closed circularform in its plan view with uniform section-shaped treadsattached to and radiating from a minimum-diameter group of patient treatment rooms or patient sleepingrooms within Group I-2 occupancies where staff are in atten-dance within thesuite, for supervision of all patients within thesuite and the suite is in compliance with the requirements ofSections through tread with nonparallel 1003 GENERAL MEANS OF general requirements specified inSections 1003 through 1013 shall apply to all three elements ofthemeans of egresssystem.

9 In addition to those specificrequirements for theexit access, theexitand theexit dischargedetailed elsewhere in this Ceiling of egressshall 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 OREGON STRUCTURAL SPECIALTY CODEMEANS OF EGRESS2M:\data\CODES\STATE CODES\Oregon\2010\Structural Specialty_Building\Final VP\ , February 05, 2010 12:49:50 PMColor profile: Generic CMYK printer profileComposite Default screen6.

10 Ramp headroom in accordance with The clear height of floor levels in vehicular andpedestrian traffic areas in parking garages in accor-dance with Section Areas above and belowmezzaninefloors in accor-dance 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,aislesand passageways. Notmore than 50 percent of the ceiling area of ameans of egressshall be reduced in height by protruding :Door closers and stops shall not reduceheadroom to less than 78 inches (1981 mm).