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HomeMy WebLinkAbout1478 ORDINANCE NO. 1478 AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF ARCADIA AMENDING THE BUILDING CODE BY ADDING CERTAIN REGULATIONS RELATING TO HIGH RISE BUILDINGS. THE CITY COUNCIL OF THE CITY OF ARCADIA DOES ORDAIN AS FOLLOWS; SECTION 1, Section 8130.30 is hereby added to the Arcadia Munici.pal Code to read as' follows: "8130.30. ADDITION. Section 1807 is hereby added to Chapter 18 of said Uniform Building Code to read as follows: Section 1807. Special Provisions for High Rise Buildings. (a) Scope. All buildings having floors used for human occupancy located more than fifty-five (55) feet above the lowest level of Fire Department vehicle access shall conform to the requirements of this Section in addition to other applicable requirements of this Code. (b) Fire Alarm. A manual fire alarm box shall be located adjacent to exits into stairway shafts and in every ele- vator lobby. The box shall be connected to the Central Control , station and to'the voice communication system as required by this Section. The system shall be designed in accordance with UBC Standards or the applicable provisions of NFPA 71, 72A or 72B. (c) Fire Detectors. An approved system which will provide for automatic detection of products of combustion other than heat shall be installed in every mechanical equipment room and in the return air portion of every air conditioning and mechanical ventilation system that serves floors other than the floor on which the equipment is located. Detectors set to operate within the limitations of UBC Standards No. 43-6 or for greater sensitivity shall be located at each opening into the- vertical shaft. -1- 1478 (d) Voice Alarm System. Both the detection system and the fire alarm system shall activate a voice alarm system capable of being operated from the Central Control Station on both a general and selective basis, The alarm shall be designed to be heard by all occupants within the building or designated portions thereof and within elevators, The elevator lobby detector required by Chapter 51 shall be connected to the system. (e) Voice Communication System. There shall be two separate approved voice communication systems; one for Fire Department communication system and the other a public voice communication (address) system between the Central Control Station and the following areas.: 1. Elevator, elevator lobbies, corridors and stairways. 2. Every office area exceeding one thousand (1,000) square feet in area. 3. Each dwelling unit and hotel guest room. When approved, the Fire Department system may be combined with the public voice communication system. (f) Central Control Station. A Central Control Station for Fire Department operations shall be provided in a location approved by the Fire Department. It shall contain the voice communication systems panel; fire detection and alarm system panels; status indicators and controls for elevators and air handling systems, a public telephone and sprinkler annunciator , and water flow detectors and standby power controls. (g) Smoke Control. Natural or mechanical ventilation for the removal of the products of combustion shall be provided in every story. One of the following systems shall be used on each story; however, the same system need not be used throughout the entire building. -2- 1478 1. Panels or windows in the exterior wall which can be opened from an approved location other than the fire floor, Such venting facilities shall be provided at the rate of at least twenty (20) square feet per fifty (50) lineal feet of exterior wall in each story, and distributed around the perimeter at not more than fifty (50) foot intervals. Such panels shall be clearly identified as required by the Fire Department. 2. Approved openable tempered glass may be used in lieu of openable panels. . , 3. When fire sprinklers are installed in compliance with Section 1807 (1), the mechanical air handling equipment may be designed to assist smoke removal. Under fire conditions, the return and exhaust air shall be ~oved direct+y t9 the outside without recirculation to other sections of the building. 4. A shaft through which smoke and heat can be mechanically vented to the outdoors. The size of the shaft shall be uniform throughout and of such dimensions as to provide sixty < (60) air changes per hour in the largest compartment'served anywhere in the building. Openings into the shaft shall be protected with an automatic single piece shutter locat~d as high in the room as possible and designed to vent the entire compartment. 5. Any other design which will produce equivalent results. (h) Elevators. At least one elevator in each bank available for Fire Department access to any floor shall be provided. The elevator shall open into a lobby which may serve additional elevators, and shall be separated from the remainder of the building by construction as required for corridors. The elevator-may be within a smokeproof enclosure. See Chapter 51 for additional require- ments, -3- 1478 (i) Standby Power and Light. A permanently installed standby power generation system conforming to the Electrical Code shall be provided. The system shall be equipped with suitable means for automatically starting the generator set upon failure of the normal electrical service and for automatic transfer and operation of all required electrical functions at full power within sixty (60) seconds of such normal service failure. System super- vision with manual start and transfer features shall be provided at the Central Control Station. An on-premise fuel supply sufficient for not less than two (2) hours full demand operation of the system shall be provided. All power, 'lighting, signal and communication facilities provided under the requirements of this Section shall be transferable to the standby'power system. The power requirements shall be determined so as to provide service to, but not limited to, the following: 1. Fire alarm system. 2. Exit and other eme~gency lighting. 3. Fire protection equipment. 4. Mechanical ventilation required by this Section. 5. Fire De~artment elevator. 6. Voice communication system. (j) Seismic Considerations. The anchorage-of the following mechanical and electrical equipment required by" this Section shall be designed in accordance with Section 2314 for a lateral force based on a"Cp" value of 0.5 unless data substan- tiating a lesser value is furnished: 1. Elevator drive and suspension systems. 2. Standby power and lighting facilities. 3. Fire pumps and other fire protection equipment. -4- " 1478 (k) Exits. All stairway doors which are. to be locked from the stairway side shall have the capability of being unlocked without unlatching upon a signal from the Central Control Station. Emergency telephones shall be provided at not less than every fifth floor in each required stairway. (1) Fire Sprinkler System. Sprinkler protection conforming to the following shall be provided: 1. The sprinkler system is hydraulically designed using the parameters set forth in UBC Standard No. 38-1 and the following: a. Shut off valves and waterflow devices shall be provided on each floor. In addition to actuating a local alarm on the floor upon which the water flow is detected, such valves shall be supervised by a ' continuously manned control station or by a central station. b. The sprinkler system shall be looped between standpipe risers at the bottom, top and mid-height of all buildings with a maximum of twenty (20) stories served by any loop. At each loop level there shall be check valves. c. Piping may be copper or steel with no minimum size of.pipe required. Solder connections may be used if not less than ninety-five per cent (95%) tin and five per cent (5%) antimony. d. Pitching of lines is not required. e. A minimum of two (2) .fire pumps independently driven shall be provided and sized for the sprinkler demand plus providing for a minimum five hundred (500) gallons per minute Fire Department standpipe operation. -5- 1478 '" f. An on-site supply of fifteen thousand (15,000) gallons of water shall be provided. This supply shall be available automatically if the principal supply fails. g. Operation of the sprinkler system shall activate the voice communication system. 2. When the automatic sprinkler system described above is installed, the following reductions from this Code are permitted: a. The fire-resistive timer period set forth in Table No. 17-A may be reduced by one hour for interior bearing walls, exterior bearing and non-bearing walls, roofs and the beams supporting roofs provided they do not frame into columns. All office building partitions required to be of one-hour fire-resistive construction by Table No. 17-A and Section 3304 (g) may be of non-combustible construction without a fire-resistive time period. Openings in corridor partitions shall be protected by tight fitting, self-closing doors that need not have a fire-resistive time period. In Group H Occupancies, corridor and dwelling unit or guest room separation may be reduced to one-half hour. b. The one and one-half inch hose lines and nozzles may be omitted. c. Travel distance to a horizontal exit or to an enclosed stairway may be three hundred (300) feet, d. Smokeproof enclosures may be eliminated if.each required stairway is pressurized as provided in Section 3309 (H-5) to .15 inches of water column. .-6- 1478 e. Dry standpipes may be eliminated providing that hose connections for Fire Department use are taken off the sprinkler risers, and the system complies with Section 3073 of the 1972 Edition of NFPA Pamphlet #13.11 SECTION 2. Section'8130.31 is hereby added to the Arcadia Municipal Code to read as follows: 118130.31. ADDITION. Section 1907 is hereby added to Chapter 19 of said Uniform Building Code to read as follows: Section 1907. Special Provisions for High Rise Buildings. Buildings having floors used for' human occupancy loc~ted more than fifty-five (55) feet above the lowest level of Fire Department vehicle access shall conform to tne requirements of Section 1807 in addition to other applicable requirements of this Code.. II SECTION 3. Section 8130.33 is hereby added to the Arcadia Municipal Code to read as follows: 118130.33. ADDITION. Chapter 51 is hereby added to said Uniform Building Code to read as follows: CHAPTER 51 -- ELEVATORS Section 5101. The provisions of this Chapter shall apply to the design, construction, installation, operation, alteration and repair of elevators. Section 5102. Walls and partitions enclosing elevator and dumbwaiter hoistway shafts and escalator shafts shall be of not less than the fire-resistive construction required under Types of Construction in Part V of this Code. Section 5103. (a) Automatic Elevators. Automatic passenger elevators shall conform to the following: 1. Commandeering switch. In other than dwelling units, elevators shall be provided witt a two-position switch for emergency operation. Such switch shall be located near the entrance to the elevator at each main floor of the building. -7- 1478 When t.he switch.is in the "on" position, all elevators which are in normal service shall return non-stop to the floor where the swi.tch is in the "on" position and the doors shall open, except that an elevator traveling away from the main floor may reverse at the next available floor without opening ,- its doors. When the switch is in the "on" position, door reopening devices for power operated doors which. may be affected ,by smoke or heat so as to prevent door closure shall be rendered inoperative and elevators equipped with power operated doors and standing at a floor other than the main floor, with door open, shall close their doors without delay. Except. for elevators in emergency service, the switch shall be connected so that elevators may be returned to normal service by moving the switch to the "off" position. 2. Heat and smoke sensing devices. The return to a main floor may be initiated by heat and/or smoke sensing devices. in the building independently of the switch required by Provision 1, above, except that such devices at the main floor shall not initiate the return of the elevators. If so, the switch required at a main floor shall have three (3) positions. The third position shall restore normal service independent of the heat and/or smoke sensing device. 3. Elevator car emergency switch. A switch shall be provided in or adjacent to an operating panel of each elevator car. This switch, when operated, shall put the elevator on emergency service and shall be operable only after the switch required by Provision 1,- above, has been activated. When the emergency se:r'Vice switch in the elevator is actuated: (i) An elevator shall,be operable only by a person in the elevator. -8- 1478 (ii) Elevators on emergency service shall not respond to elevator landing calls. (iii) The opening of power operated doors shall be controlled only by continuous pressure "open" buttons or switches. If the open button or switch is released during the "open" motion, the doors shall automatically reclose. '(iv) Door reopening devices for power operated doors which may be affected by smoke or heat so as to prevent door closure shall be rendered inoperative. 4. Keys for elevator switches. Keys where permitted for the switches required by Provisions 1 and 3,. above, shall be kept on the premises by the person responsible fb.r. the maintenance and operation of the elevators, in a locat~on readily accessible to authorized persons in an emergency, but not where they are available to the public. (b) Attendant Operated Elevators. Elevators operated only by a designated operator in the car shall be proviged with signal system to permit signalling the operator from the main floor to return non-stop to a designated main floor. Attendant operated elevators having power operated doors and door reopening devices affected by smoke or heat shall be rendered inoperative and such doors and devices shall conform to subsection (a) 3, (Hi) and (iv), above. (c) Dual Operated Elevators. Elevators arranged for dual operation shall, when on automatic' operation, conform to subsection 5103(a) and when attendant operated shall conform to subsection 5103(b). (d) Door Operation on Dangerous Floors. Each elevator lobby or entrance ,area shall be provided with a heat and smoke sensing element which will not permit the elevator doors to open -9- 1478 when there is a temperatre of 250oF, or a smoke obscuration of 0.03 optical density per foot or more at ceiling height or at an elevation of 12 feet, whichever is lower, at the elevator entrance. (e) Access. Each elevator car shall have a height, recessed area, or movable ceiling which will make possible the carrying of a nine (9) foot high ladder. (f) Emergency Power. In every building regulated by Section 1807 or 1907, emergency power shall be provided for at least one elevator in each bank. ~he emergency power shall.be transferable to any other elevator in the bank ana shall be capable of operating the' elevator with a full load at a speed of not less than one hundred fifty (150) feet per minute. Emergency power shall be provided by an approved self-contained generator set to operate whenever there is a loss of power in the normal house current. The generator shall be in a separate room having at least a One-Hour Fire-Resistive. Occupancy Separation ~rom the remainder of the building and shall have a fuel supply adequate to operate the equipment for two (2) hours. (g) Restricted or Limited Use Elevators. The Building Official may waive the requirements of this Section for any eleva- tor designed for limited or restricted use, serving only specific floors or a special function." SECTION 4. This is an emergency ordinance necessary for the immediate preservation of the public peace, health and safety, and shall go into effect upon its adoption. The facts constituting such necessity are that high rise buildings having floors used for human occupancy located more than fifty-five (55) feet above the lowest level of Fire Department vehicle access may be constructed in the City of Arcadia under applicable zoning and building regulations. Such buildings present special fire -10- 1478 protection and suppression problems, and in order to meet these problems and protect the public health and safety, it is necessary that this ordinance take effect i~ediately. SECTION 5. The City Clerk shall certify to the adoption of this ordinance. I HEREBY CERTIFY that the foregoing ordinance was adopted at a regular meeting of the City Council of the City of Arcadia held on the 15th day of May , 1973, by the affirmative vote of at least three Councilmen, to wit: AYES: Councilmen Butterworth, Hage, Helms, Scott and Arth NOES: None ABSENT: None ~au(A,a~ 51c~ Ci Y qerk of tneCity of Arcadia SIGNED AND APPROVED this 15th day of May , 1973.. r!. / !f:-~yj'- 0X Mayor of the City of Arcadia ATTEST, '- ~ar~~/1 I&~~ City Clerk ' (SEAL) .;/ , , / ,. .' ~ " , -,.---. . --. _-.; ~.r._ - _'-' --"'" . - -..... ...( -11- 1478