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I <br />82. <br />A floor or landing not more than 1 inch below <br />the threshold is required on each side of an <br />exit door. Section 3303 (h). <br />83. <br />Doors should not project more than 7 inches in. <br />to the required corridor width when fully <br />Opened or more than one-half into the required <br />corridor width when in any position. Section <br />3304(d)........................................................... <br />84. <br />Revolving (sliding) (overhead) doors are not per- <br />mitted as exit doors. Section 3303 (1). <br />85. <br />Exit doors should provide immediate access to <br />an approved means of egress. Section 3303 <br />(g). Exiling through another room does not <br />comply. <br />86. <br />Corridors should have a minimum width of 44 <br />• <br />inches. Section 3304 (b). <br />87. <br />serving nonambulatory persons should <br />ICorridors <br />have an 8-foot minimum width. Section 3318 <br />(c). <br />88. <br />Dead end of corridors and exit balconies are <br />limited to 20 feet. Section 3304 (f). <br />89. <br />and ceilings of corridors should be of one - <br />hour fire -resistive construction. Section 3304 <br />IWalls <br />(g). An architectural section through tire corri• <br />dor is necessary to determine how this is <br />accomplished. <br />90. I <br />Exterior exit balconies cannot project into an <br />area where protected openings are required <br />due to location on property. Section 3304 (i). <br />91. <br />openings into corridors should be pro- <br />IInterior <br />tected as specified in Section 3304 N. <br />92. <br />Stairway .......................................... should have <br />a minimum width of .................... inches. Trim <br />and handrails should not project more than <br />31/2 inches into the required width. Section <br />3305 (b). <br />93. <br />on stairways should not exceed 72/2 <br />(Risers <br />inches and runs should not be less than 10 <br />inches. Section 3305 (c). <br />94. <br />Landings on stairways should have a dimension <br />in the direction of travel equal to the width of <br />the stairway but need not exceed 4 feet. Sec- <br />tion 3305 (f). <br />95.I <br />Landings should not be reduced in width more <br />than 31/a inches by a door when fully open. <br />Section 3305 (f). <br />96. <br />portion of stairways should have an <br />IBasement <br />approved barrier where continuous to upper <br />floors in an exit enclosure. Section 3305 (g). <br />97. <br />IVertical distances between stairway landings are <br />limited to 12 feet. Section 3305 (h). <br />98. <br />I Fandrails should be placed not less than 30 <br />inches nor more than 34 inches above the <br />tread. Section 3305 (i). Two handrails are re- <br />quired where'stainvays exceed 44 inches in <br />width. <br />99. <br />'Guardrails for stairs, balconies, and landings <br />should conform with Section 1714. Note that <br />maximum clearance between intermediate rails <br />is 9 inches. <br />100. <br />( Openings in exterior walls within 10 feet of <br />exterior stairways should be protected with <br />self -closing three -fourths -hour fire -resistive as. <br />semblies. Section 3305 (k). <br />101. <br />Enclosed ustrbte space under interior stairways <br />should be protected on the enclosed side as <br />required for one -hour fire -resistive construc- <br />tion. Section 3305 (1). <br />102. <br />Nnncombuslible exterior stairs are required. <br />Suction 3305 (m). <br />103. <br />Exterior stairs should not project into an area <br />(yards or courts) where wall openings must be <br />protected. Section 3305 (m). <br />104. <br />One stairway should extend to the roof. Section <br />3305 (n). It must be in a smokeproof enclosure <br />In buildings over 75 feet in height. Section <br />3309 (b). <br />105. <br />Six-foot 6-inch minimum headroom clearance for <br />stairways should be indicated on plans. Section <br />3305 (o). Note that this is from a plane tan- <br />gent to the stairway tread nosings. <br />106. <br />Ramp slopes should not exceed one foot in <br />................................ feet. Section 3306 (c) (d). <br />107. <br />Surface of ramps should be roughened or of a <br />nonslip material. Section 3306 (f). <br />108. <br />Stairways should be, enclosed as specified in <br />Section 3308. <br />(a) One (two) -hour fire -resistive walls are re- <br />quired. <br />(b) Only exit doors are allowed to open into exit <br />enclosures. <br />(e) Doors should be labeled one (one -and -one- <br />half) -hour fire assemblies. <br />(d) Exit enclosures should include a corridor on <br />the ground floor extending to the exterior. <br />Fire -resistive construction should be as re- <br />quired for the exit enclosure, including pro- <br />tected openings. Only exit doors are per- <br />mitted to open into the corridor. <br />(e) An approved barrier is required at the <br />ground floor to prevent people from acci- <br />dentally continuing to the lower level. <br />(f) Usable space is not allowed under the <br />stairs. <br />.............................................................................. <br />309. <br />One exit from the building should be a smoke - <br />proof enclosure complying with Section 3309. <br />110. <br />openings into exit courts less than 10 feet wide <br />should be protected with labeled 45-minute fire <br />assemblies. Section 3310 (d). Also see "exit <br />court" definition in Section 3301 (c). Openings <br />than 10 feet above the court floor are <br />exempt. <br />tmore <br />ill.No <br />openings other than required exits are per- <br />mitted in exit passageways. The passageways <br />should be of .........................hour fire -resistive <br />construction. Section 3311 (a). <br />112. <br />Exit Illumination and signs should be provided in <br />conformance with Section 3312. <br />113. <br />Aisle (cross aisle) in auditorium should have a <br />minimum width of ............................... Section <br />3313 (b). Section 3313 (e). <br />114. <br />'anic hardware is required on exit doors serving <br />Group 0 Occupancies having an occupant load <br />of more than 100. Section 3316 (a). In lieu <br />of this, doors shall have no locks or latches. <br />115. <br />:Rain and side exits in conformance with Sec- <br />tion 3315 are required for B-2 (1) Occupancies. <br />Section 3316 (a). <br />116. <br />Corridors of Group C Occupancies should have a <br />width required by Section 3302 plus 2 feet, but <br />not less than 6 feet. Section 3317 (e). <br />117. <br />Each floor above or below the ground floor level <br />of Group C Occupancies should have no less <br />than two exit stairs. Section 3317 (6). <br />118. <br />Exit stairs serving an occupant load of more <br />than 100 in a Group C Occupancy should have <br />a minimum clear width of 5 feet. Section 3317 <br />(g)• <br />119. <br />Every room with an occupant load exceeding <br />300 should have one of Its exits Into a separate <br />exit system. Section 3317 (b). <br />