2930 HOYT AVE 2019-09-24 - Laserfiche WebLink

CONSTRUCTION REQUIREMENTS FOR EXISTING BUILDINGS TABLE 1104.9 1104.13.1 Height.Handrail height,measured above stair REVOLVING DOOR SPEEDS tread nosings, shall be uniform, not less than 30 inches INSIDE DIAMETER POWER-DRIVEN-TYPE MANUAL-TYPE (762 nun)and not more than 42 inches(1067 mm). (feet-Inches) SPEED CONTROL SPEED CONTROL (rpm) (rpm) 1104.14 Slope of ramps. Ramp runs utilized as part of a 6-6 11 12 means of egress shall have a running slope not steeper than 7-0 10 11 one unit vertical in 10 units horizontal (10-percent slope). 7-6 9 11 The slope of other ramps shall not be steeper than one unit vertical in eight units horizontal(12.5-percent slope). 8-0 9 10 1104.15 Width of ramps. Existing ramps are permitted to 8-6 8 9 have a minimum width of 30 inches (762 mm) but not less 9-0 8 9 than the width required for the number of occupants served as 9-6 7 8 determined by Section 1005.1.In Group I-2,ramps serving as a means of egress and used for the movement of patients in 16-0 A, 7 8 beds shall comply with Section 1105.5.4. For SI: 1 inch=25.4 mm,1 foot=304.8 mm. 1104.16 Fire escape stairways. Fire escape stairways shall 1104.9.1 Egress component.A revolving door used as a comply with Sections 1104.16.1 through 1104.16.7. component of a means of egress shall comply with Section 1104.16.1 Existing means of egress. Fire escape stair- 1104.9 and all of the following conditions: ways shall be permitted in existing buildings but shall not ' 1. Revolving doors shall not be given credit for more constitute more than 50 percent of the required exit capac- than 50 percent of the required egress capacity. ity. i 2. Each revolving door shall be credited with not more 1104.16.2 Protection of openings. Openings within 10 than a 50-person capacity. feet(3048 mm)of fire escape stairways shall be protected 3. Revolving doors shall be capable of being collapsed by opening protectives having•a minimum 3/4-hour fire when a force of not more than 130 pounds(578 N)is protection rating. applied within 3 inches(76 mm)of the outer edge of Exception: In buildings equipped throughout with an a wing. approved automatic sprinkler system, opening protec- 1104.10 Stair dimensions for existing stairways. Existing tion is not required. ( stairways in buildings shall be permitted to remain if the rise 1104.16.3 Dimensions. Fire escape stairways shall meet does not exceed 81/4 inches (210 mm) and the run is not less the minimum width, capacity,riser height and tread depth I than 9 inches(229 mm).Existing stairways can be rebuilt.Exception: Other stairways approved by theas specified in Section 1104.10. fire code 1104.16.4 Access.Access to a fire escape stairway from a official. corridor shall not be through an intervening room.Access 1104.10.1 Dimensions for replacement stairways. The to a fire escape stairway shall be from a door or window replacement of an existing stairway in a structure shall not meeting the criteria of Section 1005.1. Access to a fire be required to comply with the new stairway requirements escape stairway shall be directly to a balcony, landing or of Section 1009 where the existing space and construction platform.These shall not be higher than the floor or win- will not allow a reduction in pitch or slope. dow sill level and not lower than 8 inches(203 mm)below ?, the floor level or 18 inches (457 mm) below the window 1104.11 Winders. Existing winders shall be allowed to sill. remain in use if they have a minimum tread depth of 6 inches 1104.16.5 Materials and strength. Components of fire (152 mm)and a minimum tread depth of 9 inches(229 mm) escape stairways shall be constructed of noncombustible at a point 12 inches(305 mm)from the narrowest edge. materials. Fire escape stairways and balconies shall sup- 11104.12 Curved stairways.Existing curved stairways shall port the dead load plus a live load of not less than 100 be allowed to continue in use, provided the minimum depth pounds per square foot (4.78 kN/m2). Fire escape stair- ' of tread is 10 inches (254 mm)and the smallest radius shall ways and balconies shall be provided with a top and inter- be not less than twice the width of the stairway. mediate handrail on each side. 1 1104.13 Stairway.handrails.Stairways shall have handrails 1104.16.5.1 Examination. Fire escape stairways and on at least one side.Handrails shall be located so that all por- balconies shall be examined for structural adequacy tions of the stairway width required for egress capacity are and safety in accordance with Section 1104.16.5 by a within 44 inches(1118 mm)of a handrail. registered design professional or others acceptable to Exception: Aisle stairs provided with a center handrail the fire code official every 5 years,or as required by the are not required to have additional handrails. fire code official.An inspection report shall be submit- ted to the fare code official after such examination. I 206 2015 INTERNATIONAL FIRE CODE®