Western Steel Erection plan review notes

Home Browse Search

1997 UNIFORM BUILDING CODE 1003.2.8.2 1003.3.1.2 EXCEPTIONS: 1. Main exterior exit doors that obviously and the means of egress system shall comply with the requirements of clearly are identifiable as exit doors need not have exit signs when this section. These means of egress components may be selec- approved by the building official. tively included in the exit access,the exit or the exit discharge por- t.Rooms or areas that require only one exit or exit access. tions of the means of egress system. 3.In Group R,Division 3 Occupancies and within individual units of Group R,Division 1 Occupancies. 1003.3.1 Doors. 4.Exits or exit access from rooms or areas with an occupant load of 1003.3.1.1 General. For the purposes of Section 1003.3.1, the less than 50 where located within a Group I,Division 1.1, 1.2 or 2 Occupancy or a Group E,Division 3 day-care occupancy. term"exit door"shall mean all of those doors or doorways along the path of exit travel anywhere in a means of egress system. 1003.2.83 Graphics.The color and design of lettering,arrows f and other symbols on exit signs shall be in high contrast with their Exit doors serving the means of egress system shall comply background.Exit signs shall have the word"EXIT"on the sign in with the requirements of Section 1003.3.1. Where additional block capital letters not less than 6 inches(152 mm)in height with doors are installed for egress purposes,they shall conform to all a stroke of not less than 3/4 inch(19 mm).The word"EXIT"shall requirements of this section.OBuildings or structures used for have letters having a width of not less than 2 inches (51 mm) human occupancy shall have at least one exterior exit door that except for the letter"I"and a minimum spacing between letters of meets the requirements of Section 1003.3.1.3. not less than 3/8 inch(9.5 mm).Signs with lettering larger than the Exit doors shall be readily distinguishable from the adjacent minimum dimensions established herein shall have the letter construction and shall be easily recognizable as exit doors.Mir- width,stroke and spacing in proportion to their height. rors or similar reflecting materials shall not be used on exit doors, 1003.2.8.4 Illumination.Exit signs shall be internally or exter- and exit doors shall not be concealed by curtains,drapes,decora- nally illuminated. When the face of an exit sign is illuminated tions and similar materials. from an external source,it shall have an intensity of not less than 1003.3.1.2 Special doors. Revolving, sliding and overhead 5 footcandles(54 lx)from either of two electric lamps.Internally doors serving an occupant load of 10 or more shall not be used as illuminated signs shall provide equivalent luminance and be listed required exit doors. for the purpose. EXCEPTIONS: 1.Approved revolving doors having leaves that EXCEPTION:Approved self-luminous signs that provide evenly will collapse under opposing pressures may be used,provided illuminated letters that have a minimum luminance of 0.06 foot lambert 1.1 Such doors have a minimum width of 6 feet 6 inches(1981 (0.21 cd/m'-). mm). 1003.2.8.5 Power source.All exit signs shall be illuminated at 1.2 At least one conforming exit door is located adjacent to all times.To ensure continued illumination for a duration of not each revolving door. less than 11/2 hours in case of primary power loss,the exit signs 1.3 The revolving door shall not be considered to provide any shall also be connected to an emergency electrical system pro- required width when computing means of egress width in vided from storage batteries,unit equipment or an on-site genera- accordance with Section 1003.2.3. for set, and the system shall be installed in accordance with the 2•Horizontal sliding doors complying with UBC Standard 7-8 may Electrical Code.For high-rise buildings,see Section 403. be used2.1 In elevator lobby separations. EXCEPTION:Approved self-luminous signs that provide contin- 2.2 In other than Groups A and H Occupancies,where smoke uous illumination independent of an external power source. barriers are required. 1003.2.9 Means of egress illumination. 2.3 In other than Group H Occupancies,where serving an occu- pant load of less than 50. 1003.2.9.1 General.Any time a building is occupied,the means Power-operated doors complying with UBC Standard 10-1 may of egress shall be illuminated at an intensity of not less than 1 foot- be used for egress purposes. Such doors,where swinging, shall candle(10.76 Ix)at the floor level. have two guide rails installed on the swing side projecting out EXCEPTIONS:1.In Group R,Division 3 Occupancies and within from the face of the door jambs for a distance not less than the wid- individual units of Group R,Division 1 Occupancies. est door leaf.Guide rails shall not be less than 30 inches(762 mm) 2. In auditoriums, theaters, concert or opera halls, and similar in height with solid or mesh panels to prevent penetration into assembly uses,the illumination at the floor level may be reduced dur- door swing and shall be capable of resisting a horizontal load at top ing performances to not less than 0.2 footcandle(2.15 Ix),provided that of rail of not less than 50 pounds per lineal foot(730 N/m). the required illumination be automatically restored upon activation of a premise's fire alarm system when such system is provided. EXCEPTIONS:1.Walls or other types of separators may be used in lieu of the above guide rail,provided all the criteria are met. 1003.2.9.2 Power supply.The power supply for means of egress 2.Guide rails in industrial or commercial occupancies not accessi- illumination shall normally be provided by the premises' electri- ble to the public may comply with the exception to Section 509.3. cal supply. In the event of its failure, illumination shall be auto- 3. Doors swinging toward flow of traffic shall not be permitted matically provided from an emergency system for Group I, unless actuating devices start to function at least 8 feet 11 inches(2718 Divisions 1.1 and 1.2 Occupancies and for all other occupancies mm)beyond the door in an open position and guide rails extend 6 feet where the means of egress system serves an occupant load of 100 5 inches(1956 mm)beyond the door in an open position. or more.Such emergency systems shall be installed in accordance Clearances for guide rails shall be as follows: with the Electrical Code. 1. Six inches (152 mm) maximum between rails and leading For high-rise buildings,see Section 403. edge of door at the closest point in its arc of travel. 1003.2.10 Building accessibility.In addition to the requirements 2.Six inches(152 mm)maximum between rails and the door in of this chapter,means of egress,which provide access to,or egress an open position. from, buildings for persons with disabilities, shall also comply 3.Two inches(51 mm)minimum between rail at hinge side and with the requirements of Chapter 11. door in an open position. 10033 Means of egress components. Doors, gates, stairways 4.Two inches (51 mm)maximum between freestanding rails and ramps that are incorporated into the design of any portion of and jamb or other adjacent surface. 1-107