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Ordinance No. 655 - Uniform Building CodeORDINANCE NO. 655 AN ORDINANCE OF THE CITY OF ROSEMEAD ADOPTING BY REFERENCE, PURSUANT TO GOVERNMENT CODE SECTION 50022.2, THE UNIFORM BUILDING CODE, 1988 EDITION, AND AMENDMENTS THERETO; LOS ANGELES COUNTY CODE, ELECTRICAL CODE, TITLE 27; THE UNIFORM PLUMBING CODE, 1988 EDITION, AND AMENDMENTS THERETO; THE UNIFORM MECHANICAL CODE, 1988 EDITION, AND AMENDMENTS THERETO; ADOPTING AMENDMENTS TO SAID CODES, READOPTING PORTIONS OF ARTICLE VIII OF THE ROSEMEAD MUNICIPAL CODE AND DECLARING THE URGENCY THEREOF. THE CITY COUNCIL OF THE CITY OF ROSEMEAD DOES ORDAIN AS FOLLOWS: Section 1. Chapter I of Article VIII of the Rosemead Municipal Code is amended by amending Sections 8100 and 8108 to read: • 8100. Adoption of Building Code.` Except as hereinafter provided, Chapters 4 through 60, excluding Chapters 35, 41, and 53 of that certain Building Code known and designated as the "Uniform Building Code, 1988 Edition, prepared by the International Conference of Building Officials and including Chapters 7, 11, 23 (Divisions 1 and 11), 38, 49, and 55 of the Appendix to said Uniform Building Code, together with all amendments to the Uniform Building Code as set forth in Title 26, Building Code of the County of Los Angeles, as amended and if effect on December 5, 1989, are hereby adopted by reference. Section 8101, et seq. of Article Vlll of the Rosemead Municipal Code are hereby readopted. All of the above-mentioned Codes, amendments, and Sections shall constitute the Building Code of the City of Rosemead. The provisions of the Building Code applying to dwellings, lodgings, houses, hotels, apartment houses, convents, monasteries, or other uses classified by • the building code as a group R-1 or R-3 occupancy and including Chapters 1, 2, 3, 4, 98, and 99 shall constitute and may be cited as the Housing Code. A copy of the Uniform Building Code, Title 26, and Sections 8100 et seq. of Chapter I of Article VIII of the Rosemead Municipal Code have been deposited in the office of the City Clerk of the City of Rosemead and shall be at all times maintained by the Clerk for use and examination by the public. 8108. Violations and Penalties. (a) Compliance with Code. No person shall erect, construct, enlarge, alter, repair, move, improve, remove, convert, demolish, equip, use, occupy, or maintain any building or structure or perform any grading in the City of Rosemead, or cause the same to be done, contrary to or in violation of any of the provisions of the Building Code. (b) Penalty. Any person, firm, or corporation violating any of the provisions of the Building Code shall be deemed guilty of a misdemeanor, and each such person shall be deemed guilty of a separate offense for each and every day or portion thereof during which any violation of any of the provisions of the Building Code is committed, continued or permitted, and upon conviction of any such violation such person shall be punishable by a fine of not more than one thousand ($1,000) dollars or by imprisonment in the County Jail for a period of not more than six (6) months, or by both such fine and imprisonment. Section 2. Notwithstanding the provisions of Section 1 of this Ordinance, referred to in Section 1 set forth in the Building Code is amended as Exhibit "A" attached to this Ordinance, a copy of which has been deposited in the office of the City Clerk of the City of Rosemead and shall at all times be maintained by the Clerk for use and examination by the public. Section 3. Notwithstanding the provisions of Section 1 of this • Ordinance, the Building Code is amended as follows: (a) Section 9905 of Title 26 of the Los Angeles County Code is amended by adding subsection (s) to read as follows: U neglect includes, but is not limited to, building exteriors, walls. fences, driveways, or (b) Section 9926 of Title 26 of Los Angeles County Codes is amended as follows: • Section 9926 (b) Emergency Procedures. When in the opinion of the county engineer a substandard property, substandard structure, or portion thereof is an immediate hazard to life and property, and the abatement of such hazard requires action pursuant to the exception in Section 9910, the county engineer may then demolish the substandard building, or portion thereof, or may cause such other work to be done to the extent necessary to eliminate the hazard. 2 8202. Violations and Penalties. It shall be unlawful for any person, firm, or corporation to violate any of the provisions of the Electrical Code. Each person, firm, or corporation violating any of the provisions of the Electrical Code shall be deemed guilty of a separate offense for each day or portion thereof during which such violation is committed, continued, or permitted and shall be punishable by a fine of not to exceed one thousand ($1,000.00) dollars or by imprisonment in the County Jail for a period of not more than six months or by both such fine and imprisonment. Section 4. Chapter 2 of Article VIII of the Rosemead Municipal Code is amended by amending Section 8200 to read: 8200. Adoption of Electrical Code. Except as hereinafter provided, title 27, Electrical Code, of the Los Angeles County Code, adopted by Los Angeles County Ordinance No. 88-0037, as amended and in effect on December 1, 1989, consisting of Title 27 of the Los Angeles County Code (formerly Ordinance No. 110960, adopting the National Electrical Code, 1987 Edition, sponsored by the National Fire Protection Association, commencing with page 70-1 through 70-744 inclusive except as otherwise provided in said Title 27 as amended and in effect on December 1, 1989, is hereby adopted by reference. Sections 8202, et seq., of Chapter 2 of Article VIII of the Rosemead Municipal Code are hereby readopted. All of the abovementioned codes, amendments and sections shall constitute the Electrical code of the City of Rosemead. A copy of Title 27 of the Los Angeles County Code and Sections 8202, • et seq., of Chapter 2 of Article VIII of the Rosemead Municipal Code have been deposited in the office of the City Clerk and shall be at all times maintained by the Clerk for use and examination by the public. Section 5. Chapter III of Article VIII of the Rosemead Municipal Code is amended by amending Sections 8300 and 8302 to read: 8300. Adoption of Plumbing Code. Except as hereinafter provided, Chapters 1 through 13 and Appendices A, B, C, and I of that certain Plumbing Code known and designated as the "Uniform Plumbing Code, 1988 Edition", prepared by the International Association of Plumbing and Mechanical Officials, together with all amendments to the Uniform Plumbing Code, 1985 Edition, as set forth in Title 28, Plumbing Code of the County of Los Angeles, as amended and in effect on December 5, 1989, are hereby adopted by reference. Sections 8301, et • seq., Chapter III of Article VIII of the Rosemead Municipal Code are hereby readopted. All of the above mentioned codes, amendments, and sections shall constitute the Plumbing Code of the City of Rosemead. A copy of the Uniform Plumbing Code, Title 28 and Sections 8300, et seq. of Chapter III of Article VIII of the Rosemead Municipal Code have been deposited in the office of the City Clerk of the City of Rosemead and shall be at all times maintained by the clerk for use and examination by the public. 3 8302. Violations and Penalties. Any person, firm, or corporation violating any provision of the Plumbing Code shall be deemed guilty of a misdemeanor and, upon conviction thereof, shall be punishable by a fine not to exceed one thousand ($1,000.00) dollars or by imprisonment in the County Jail for a period not to exceed six months, or by both such fine and imprisonment. Each separate day or any portion thereof, during which any violation of the Plumbing Code occurs or continues, shall be deemed to constituted a separate offense and upon conviction thereof, shall be punishable as herein provided. Section 6. Notwithstanding the provisions of Section 4 of this Ordinance, the Plumbing Code is amended as follows: (1) Section 113 of the Plumbing Code is amended by adding Subsection (b) and renumbering the remainder of the Section. Subsection (b) shall read as follows: (b) Lavatory - A plumbing fixture used for washing the hands, arms, face, and head. (2) Section 117 of the Plumbing Code is amended by adding Subsection (d) and renumbering the remainder of the Sections. Subsection (d) shall read as follows: (d) Personal Service Room - A room which is not directly • connected with the production or service function performed by the establishment. Such rooms may include, but are not limited to, first aid or medical rooms, toilet rooms, change rooms, wash rooms, shower rooms, kitchens, and lunch rooms. (3) Section 121 of the Plumbing Code is amended by adding Subsections (a), (b), and (c) and renumbering the remainder of the Section. Subsections (a), (b), and (c) shall read as follows: (a) Toilet - A fixture within a toilet room which may be used for defecation or urination. (b) Toilet Room - A room within or on the premises containing at least one water closet. • (c) Toxic Material - A material is concentration or amount which exceeds the applicable limit established by a standard, such as Section 5155, 5208, or 5209 of Title 8, CCR, or in the absence of an applicable standard, which has the capacity to produce personal injury or illness to persons through ingestion, inhalation, or absorption through any body surface. 4 (4) Section 122 is amended to read as follows: (a) Plumbing Code - Plumbing Code is the 1988 Edition of the Uniform Plumbing Code, including Appendices A, B, C, and I, as published by the International Association of Plumbing and Mechanical Officials. (5) Section 122 of the Plumbing Code is amended by adding Subsection (b) to read as follows: (b) Urinal - A plumbing fixture which is used for urination. (6) Section 124 of the Plumbing Code is amended by adding Subsection (c) and renumbering the remainder of the Section. Subsection (c) shall read as follows: (c) Water Closet - A plumbing fixture (which may be used for both defecation and urination) in which the waste matter is removed by flushing with water. (7) Section 208 of the Plumbing Code is amended by adding Subsections (c) and (d) to read as follows: (c) Cast iron fittings, up to and including two (2) inches and used for water distribution, shall be galvanized. • (d) All malleable iron vent or water fittings shall be galvanized. (8) Table A of the Plumbing Code is amended by deleting references to the following Standards: Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe, Schedules 40 and 80. Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Hot and Cold Water Distribution Systems. Chlorinated Poly (Vinyl Chloride) (CPVC) Solvent Cemented Hot and Cold Water Distribution Systems (Installation). Plastic Insert Fittings for Polybutylene (PB) Tubing. • Plastic Insert Fittings for Polyethylene (PE) Plastic Pipe. Polybutylene (PB) Cold Water Building Supply and Yard Piping and Tubing (Installation). Polybutylene Hot and Cold Water Distribution Tubing Systems Using Insert Fittings (Installations). 5 Polybutylene Hot and Cold Water Distribution Pipe, Tubing and Fitting Systems Using Heat Fusion (Installation). Polybutylene (PB) Plastic Hot Water Distribution Systems. Polybutylene (PB) Plastic Pipe (SIDR-PR) Based On Controlled Inside Diameter. Polybutylene (PB) Plastic Tubing. Polyethylene (PE) Code Water Building Supply and Yard Piping and Tubing (Installation). Socket-Type Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe Fittings, Schedule 40. Socket-Type Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe Fittings, Schedule 80. Solvent Cements for Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe and Fittings. (9) Table A of the Plumbing Code is amended by adding Note 7 to read as follows: • 7. See Section 802(d) regarding maximum lead content in solder used on potable water supply systems. follows: (10) Subsection 314(a) of the Plumbing Code is amended to read as (a) In existing buildings or premises in which plumbing installations are to be altered, repaired, or renovated, deviations from the provisions of this Code are permitted, provided such deviations are found to be necessary and are first approved by the Administrative Authority. Any plumbing system may have its existing use, maintenance, or repair continued when the administrative authority determines that its use, maintenance, or repair is in accordance with the original design, and no hazard to the public health, safety, or welfare has been created by such • system. (11) Subsection 314(b) of the Plumbing Code is amended to read as follows: (b) Existing building sewers and building drains may be used in connection with new buildings or new plumbing and drainage work only when they are found on examination and test to conform in all respects to the requirements governing new work, and the proper Administrative Authority 6 shall notify the owner to make any changes necessary to conform to this Code. No building or part thereof, shall be erected or placed over any part of a drainage system which is constructed of materials other than those approved elsewhere in this Code for use under or within a building. Existing building sewer and building drains may be used in connection with plumbing alterations or repairs if such sewers or drains have been properly maintained and were installed in accordance with the applicable laws in effect at the time of installation. Any plumbing system existing on January 1, 1975, shall be deemed to have conformed to applicable law in effect at the time of installation and to have been maintained in good condition if currently in good and safe condition and working properly. (12) Section 803 of the Plumbing Code is amended by adding Subsection (g) to read as follows: (g) ABS and PVC Pipe - Joints in ABS and PVC pipe shall be made as provided in Subsection (1) of Section 802 of the Plumbing Code. (13) The exception to Subsection 909(c) of the Plumbing Code is amended to read as follows: EXCEPTION: Special use shower compartments for wheelchair use may eliminate the curb or threshold. The required slope and depth shall be maintained from the door entry to the drain opening. The minimum distance between the door or entry • to the drain opening shall be 3 feet 6 inches. (14) Chapter 10 of the Plumbing Code is amended by deleting Section 1001 and substituting the following to read: Section 1001 - Running Water Required. (a) Except where not deemed necessary for safety or sanitation by the Administrative Authority, each plumbing fixture shall be provided with an adequate supply of hot and/or cold potable running water piped thereto in an approved manner, so arranged as to flush and keep it in a clean and sanitary condition without danger of backflow or cross connection. Water closets and urinals shall be flushed by means of an approved flush tank or flushometer valve. Faucets and diverters shall be connected to the water • distribution system so that hot water corresponds to the left side of the fittings. Water closets for residential buildings or structures shall use a maximum of 3-1/2 gallons of water per flush as. approved by the State Department of Housing and Community Development. 7 as follows: (15) Subsection 1007(e) of the Plumbing Code is amended to read (e) Relief valves located inside a building shall be provided with a drain, not smaller than the relief valve outlet, of galvanized steel, or hard drawn copper piping and fittings and shall extend from the valve to the outside of the building with the end of the pipe not more than two (2) feet (.6m) nor less than six (6) inches (152.4mm) above the ground and pointing downward. Such drains may terminate at other approved locations. No part of such drain pipe shall be trapped, and the terminal end of the drain pipe shall be threaded. (16) Chapter 12 of the Plumbing Code is amended by adding Section 1203 to read: Section 1203 - Permit. (a) It shall be unlawful for any person to install, alter, or repair or cause to be installed, altered, or repaired any gas piping, without first obtaining a permit from the Administrative Authority to do so, provided, however, no permit shall be required from a serving gas supplier to disconnect defective gas piping or equipment when authorized by Section 1209. (b) Permits for gas piping shall show the total number of gas • outlets to be provided for on each system, and such other information as may be required by the Administrative Authority. (17) Subsection 1213(m) of the Plumbing Code is repealed. (18) Appendix "A" of the Plumbing Code is amended by adding a note to Table A-2 to read as follows: NOTE: See Chapter 10, Section 1009, Table 10-1, Plumbing Code, for equivalent fixture units. follows: (19) Section I-11 of the Plumbing Code is amended to read as • I-11 Abandoned Sewers and Sewage Disposal Facilities. (a) Every abandoned building (house) sewer, or part thereof, shall be plugged or capped in an approved manner within five (5) feet (1.5m) of the property line. (b) Every cesspool or seepage pit which has been abandoned or has been discontinued otherwise from further use or to which no waste or soil 8 pipe from a plumbing fixture is connected, shall have the sewage removed therefrom and be completely filled with the earth, sand, gravel, concrete, or other approved material. (c) The top cover or arch over the cesspool or seepage pit shall be removed before filling, and the filling shall not extend above the top of the vertical portions of the sidewalls or above the level of any outlet pipe until inspection has been called and the cesspool or seepage pit inspected. After such inspection, the cesspool or seepage pit shall be filled to the level of the top of the ground. (d) No person owning or controlling any cesspool or seepage pit on the premises of such person or in that portion of any public street, alley, or other public property abutting such premises, shall fail, refuse, or neglect to comply with the provisions of this section or upon receipt of notice so to comply from the Department having jurisdiction. (e) Where disposal facilities are abandoned consequent to connecting any premises with the public sewer, the permittee making the connection shall fill all abandoned facilities as required by the Administrative Authority within thirty (30) days from the time of connecting to the public sewer. (f) No such excavation shall be left unattended at any time unless the permittee shall have first provided a suitable and adequate barricade to • assure public safety. Section 7. Chapter IV of Article VIII of the Rosemead Municipal Code is amended by amending Sections 8400 and 8402 to read: 8400. Adoption of Mechanical Code. Except as hereinafter provided, Chapters 4 through 17, Chapter 19, Chapter 20, and Appendices A and C of that certain Mechanical Code known and designated as the "Uniform Mechanical Code, 1988 Edition", jointly prepared by the International Conference of Building Officials and the International Association of Plumbing and Mechanical Officials, together with all amendments to the Uniform Mechanical Code, 1985 Edition, as set forth in Title 29, Mechanical Code of the County of Los Angeles, as amended and in effect on December 5, 1989, is hereby adopted by reference. Sections 8401, et seq., Chapter IV of Article VIII of the Rosemead Municipal Code are hereby readopted. • All of the above mentioned codes, amendments, and sections shall constitute the Mechanical Code of the City of Rosemead. A copy of the Uniform Mechanical Code, Title 29, and Sections 8401 et seq. of Chapter IV of Article VIII of the Rosemead Municipal Code have been deposited in the office of the City Clerk of the City of Rosemead and shall be at all times maintained by the clerk for use and examination by the public. 9 8402. Violation and Penalties. It shall be unlawful for any person, firm, or corporation to erect, install, alter, repair, relocate, add to, replace, use, or maintain heating, ventilating, comfort cooling, or refrigeration equipment in the jurisdiction, or cause the same to be done, contrary to or in violation of any of the provisions of the Mechanical Code. Maintenance of equipment which was unlawful at the time it was installed, and which would be unlawful under said Mechanical Code, shall constitute a continuing violation of said Mechanical Code. Any person, firm, or corporation violating any of the provisions of said Mechanical Code shall be deemed guilty of a misdemeanor, and each such person shall be deemed guilty of a separate offense for each and every day or portion thereof during which any violation of any of the provisions of said Mechanical Code is committed, continued, or permitted, and upon conviction of any such violation, such person shall be punishable by a fine of not more than one thousand ($1,000.00) dollars or by imprisonment in the County Jail for a period of not more than six (6) months, or by both such fine and imprisonment. Section 8. Amendments to Mechanical Code. Notwithstanding the provisions of Section 6 of this Ordinance, the Mechanical Code is amended as follows: (1) The exception to Subsection 302(b) of Title 29 of the Los Angeles County Code is amended to read: • EXCEPTION: Identical appliances of 100,000 Btu or less installed in a single building: Up to and including 10 50 percent of the permit fee For each appliance over 10 An additional 5 percent of its permit fee (2) The Group R Occupancies category of Section 417 of the Mechanical Code is amended to read: Group R Occupancies: Division 1. Hotels and apartments. Convents and monasteries (each accommodating more than 10 persons). • Division 2. Not used. Division 3. Dwellings and lodging houses, large, and small day-care homes. (3) Section 423 is amended by changing the definition of Mechanical Code as follows: The Mechanical Code is the 1988 Edition of the Uniform Mechanical Code, including Appendices A and C, as jointly published by the International 10 Conference of Building Officials and the International Association of Plumbing and. Mechanical Officials. (4) Section 423 of the Mechanical Code is amended by adding the following definition to read: Mechanical Code Standards are the Uniform Mechanical Code Standards included in Appendix A of the 1988 Edition of the Uniform Mechanical Code. (5) The previously enacted amendment to Section 423 of the Plumbing Code, defining Unusually Tight Construction, is repealed. (6) Subsection 601(b)1 of the Mechanical Code is repealed. (7) The previously enacted amendment which added the note at the end of the Mechanical Code Section 607 is repealed. (8) The exception to Subsection 704.5 of the Mechanical Code is amended to read as follows: EXCEPTION: Direct vented furnaces, enclosed furnaces, and electric heating furnaces. Access to furnace located in an attic or under-floor crawl space may be through a closet, including closets in bedrooms and bathrooms. • (9) Subsection 2003(8)4 of the Mechanical Code is amended to read as follows: 4. Type I hoods where the cooking equipment includes low temperature appliances such as medium-to-low temperature ranges, roasters, roasting ovens, pastry ovens, and equipment approved for use under a Type II hood. Section 9. The modifications to the Building Code, Electrical Code, Plumbing Code, and Mechanical Code that have previously been enacted are merely a continuation of the Rosemead Building, Electrical, Plumbing, and Mechanical Codes, and all of the changes and modifications to the Building, Plumbing, and Mechanical Codes, whether previously enacted or enacted in this ordinance, are reasonably necessary because of local climate, characterized by hot, dry summers, followed by strong Santa Ana winds which make the structures in the City particularly vulnerable to rapidly spreading fires, and heavy winter rains, the location in Southern California and the relatively flat topography of the City. Section 10. State law requires that localities adopt the Uniform Building Codes and any modifications thereto, by December 28, 1989. It is essential that the City have in effect on that date building codes that comport with state law and contains those modifications necessitated by unique geographic, geologic, and climatic conditions. In the absence of immediate effectiveness, the provisions of the building code unique to the City's special circumstances will not be in place, and 11 this will have a detrimental effect on the public health, safety, and welfare. The modifications to the Uniform Building Codes contain vital provisions regarding administrative procedures, roofing materials, sprinkling requirements, and other similar matters necessitated by the City's exposure to Santa Ana winds. For these reasons, the public health, safety, and welfare require that this ordinance take effect immediately. This is an urgency ordinance. Section 11. This ordinance shall become operative on December 28, 1989. PASSED, APPROVED, and ADOPTED this 12th day of December 1989. Mayor ATTEST: - = Ci,- Clerk TN:ko . 01369/3012/062 certify that the foregoing urgency Ordinance No. 655 was duly and regularly adopted by the City Council of the City of Rosemead at a regular meeting thereof held on the 12th day of December, 1989, by the following vote: Yes: DeCocker, McDonald, Bruesch, Imperial No: Taylor Absent-. None Abstain':. None TY.CLERK rsmId\mherebyisc\kol\misc8 12 RCV 9Y:WILLDAN ASSOCIATES 111-29-89 ; 8:20 8182844905- 2136952120:9 2 EXHIBIT A ORDINANCE NO. An ordinance amending Title 26 (Building Code) of the Los Angeles County Code to adopt by reference portions of the 1988 edition of the Uniform Building Code and make other changes. The Board of Supervisors of the County of Los Angeles ordains as follows: SECTION 1. Section 100 of the Title 26 of the Los Angeles County code is amended to read: Sec. 100. U.B.C. Adoption by Reference. Except as hereinafter provided, Chapters 4 through 60, excluding Chapters 35, 41 and 53, of that certain building code known and designated as the 'uniform Building Code, 4986 1988 Edition", prepared by the International Conference of Building Officials and Including Chapters 7 (PPIEIGN-1-AN9 44+, 11, 23 (Divisions I and II), 38, 49 and 55 of the Appendix to said Uniform Building Code, are incorporated herein by reference as if fully set forth below, and shall be know as Chapters 4 through 60 of Title 26 of the Los Angeles County Code. A Copy of said Uniform Building Code, including the above designated portions of the Appendix, has been deposited in the Executive Office of the Board of Supervisors and shall be at all times maintained by the Executive office for use and examination by the public. SECTION 2. Section 103 of Title 26 of the Los Angeles County Code is amended, beginning with the fourth paragraph, to read: • Where, in any specific case, different sections of this code specify different materials, methods of construction or other requirements, the most restrictive shall govern. Where there is a conflict between a general requirement and a specific requirement the specific requirement shall be applicable. 1 n r In the event any differences in requirements exist between the physically handicapped access requirements of said Uniform Building Code and Part 2, Title 24, California dmiM St Code of Regulations, then Title 24 shall govern. SECTION 3. The first paragraph of subsection 104(b) of Title 26 of the Los Angeles County Code is amended to read: (b) Additions, Alterations or Repairs. Additions, alterations or repairs may be made to any building or structure without requiring the existing building or structure to comply with all the requirements of this code provided the addition, alteration or repair conforms to that required for a new building or structure. Additi ens alteFat4ens OF Fepairs shall -net . S se MW ` - diAg Rsafe tr::vtUFe to aR cau Ag e ad d eceme Additions or alterations shall not be made to an existing building or structure which will cause the existing building or structure to be in • violation of any of the provisions of this code nor shall such additions or alterations cause the existing building or structure to become unsafe. An unsafe condition shall be deemed to have been created if an addition or alteration will cause the existing building or structure to become structurally unsafe or overloaded; will not provide adequate egress in compliance with the provisions of this code or will obstruct existing exits; will create a fire hazard; will reduce required fire resistance or will otherwise create conditions dangerous to human life. Any building so • altered, which involves a change in use or occupancy, shall not exceed the height, number of stories and area permitted for new buildings. Any building plus new additions shall not exceed the height, number of stories and area specified for new buildings. Additions or alterations shall not be made to an existing building or structure when such existing building or 2 structure is not in full compliance with the provisions of this code except when such addition or alteration will result in the existing building or structure being no more hazardous based on life safety, fire safety and sanitation, than before such additions or alterations are under- taken: rSee also Section 911(c) for Group H, Division 6 Occupancies.] SECTION 4. Subsection 104(d) of Title 26 of the Los Angeles County Code is amended by adding the following sentence at the end of the said subsection: To determine compliance with this subsection, the building official may cause anv structure to be re-ins SECTION 5. The first paragraph of subsection 104(f) of Title 26 of the Los Angeles County Code is amended to read: (f) Historic Buildings - Repairs, alterations and additions necessary for the preservation, restoration, rehabilitation or continued use of a building or structure may be made • according to Part 8 of Title 24 of the California Code of Regulations (State Historical Building Code), provided: SECTION 6. The second paragraph of Subsection 203(a) of Title 26 of the Los Angeles County Code is amended by adding the following at the end of said paragraph: As an alternative, the building official may institute any other appropriate action to prevent, restrain, correct or abate the violation. • SECTION 7 . The first paragraph of Subsection 302(b) of Title 26 of the Los Angeles County Code is amended by adding the following sentence at the end of said paragraph: Submittals shall include construction inspection requirements as defined in Section 302(c). 3 1 SECTION 11. Subsection 304(b) of Title 26 of the Los Angeles County Code is amended by adding the following paragraph at the end of said subsection: The fees specified in this subsection are separate fees from the permit fees specified in subsection 304(a). SECTION 12. Subsection 305(a) of Title 26 of the Los Angeles County Code is amended to read: Sec. 305(a) General - All construction or work for which a permit is required shall be subject to inspection by the building official and all such construction or work shall remain accessible and exposed for inspec- tion purposes until approved by the building official. In addition, aed certain types of construction shall have continuous inspection as specified in Section 306. Approval as a result of an inspection shall not be construed to be an approval of a violation of the provisions of this code or of other ordinan- • ces of this ,jurisdiction. Inspections presuming to give authority to violate or cancel the provisions of this code or of other ordinances of the r jurisdiction shall not be valid. It shall be the duty of the permit applicant to cause the work to remain accessible and exposed for inspection purposes. Neither the building official nor the jurisdiction shall be liable for expense entailed in the removal or replacement of any material required to allow inspection. A survey of the lot may be required by the building official to verify • compliance of the structure with approved plans. 5 A site inspection may be required prior to plan check of building plans for lots or parcels in areas having slopes of five horizontal to one vertical (5:1) or steeper when the building official finds that_a visual inspection of the site is necessary to establish drainage requirements for the protection of property, existing buildings or the proposed construc- tion. The fee for such inspection shall be as set forth in Section 304(f). Such a preinspection shall not be required for a building pad graded under the provisions of Chapter 70. SECTION 13. Subsection 305(b) of Title 26 of the Los Angeles County Code is amended to read: (b) Inspection Record Card - Work requiring a permit shall not be com- menced until the permit holder or his agent shall have posted or otherwise made available an inspection record card pFemises and such position as to allow the building official con- veniently to make the required entries thereon regarding inspection of the work. This card shall be maintained in such pesitieFl available by the per- mit holder until the G.^^^•'°' ~ t^ of 0eeupaneY final approval has been issued granted by the building official. SECTION 14. Subsection 305(c) of Title 26 of the Los Angeles County Code is amended to read: (c) Approvals Required - No work shall be done on any part of the building or structure beyond the point indicated in each successive inspection • without first obtaining the written approval of the building official. Such wFitten aPPFGYa1 shall be given an after aR inspeetieR Shall haye 6eea The building official, upon 6 notification, shall make the requested inspections and shall either indi- cate that portion of the construction is satisfactory as completed or shall notify the permit holder or his agent wherein the same fails to comply with this code. Any portions which do not comply shall be corrected and such portion shall not be covered or concealed until authorized by the building official. There shall be a final inspection and approval of all buildings and structures when completed and ready for occupancy and use. SECTION 15. The second paragraph of Subsection 305(d) of Title 26 of the Los Angeles County Code is amended to read: The building official, upon notification from the permit holder or his agent, shall make the following inspections: and shall itheF appFeye that • SECTION 16. Section 305 of Title 26 of the Los Angeles County Code is amended by adding Subsection 305(f) to read: (f) Inspection Requests - It shall be the duty of the person doing the work authorized by a permit to notify the building official that such work is ready for inspection. The building official may require that every request for inspection be filed at least one working day before such inspection is desired. Such request may be in writing or by telephone at the option of the building official. It shall be the duty of the person requestin g an y insp ections required . by this code to provide access to and means for insp ection of such work. SECTION 17. The first paragraph of Section 306(a) of Title 26 of the Los Angeles County Code 1s amended to read: 7 (a) General - In addition to the inspections to be made as specified in Section 305, the owner eF-his-agent shall employ a special inspector for continuous inspection. The special inspector may be employed either directly or through the architect or engineering firm in charge of the design of the structure, or through an independent approved inspection/test firm. The inspector so employed woe shall be present during construction on the following types of work: SECTION 18. Subsection 306(a) of Title 26 of.the Los Angeles County Code is amended by adding items 13 and 14 to read: 13. BOLTS INSTALLED IN CONCRETE - During installation of bolts and placing of concrete around such bolts when stress increases permitted by Footnote No. 5 of Table No. 26-G are utilized. 14. SHOTCRETE - During the taking of test specimens and placing of all shotcrete and as required by Section 2621 0) and (k). • EXCEPTION - Shotcrete work fully supported on earth, minor repairs and when, in opinion of the building official, no special hazard exists. SECTION 19. Section 306(c) of Title 26 of the Los Angeles County Code is amended to read: (c) Special Inspector - The special inspector shall be a qualified person approved by the Building Official. The special inspector shall furnish continuous inspection on the construction and work requiring his employment. He shall report to the Building Official in writing, noting all Code violations and other information as required. Before commencing his duties, the special inspector shall be examined and shall obtain a Certificate of Registration from the Building Official. Where the Building Official determines that the examination administered by 8 the International Conference of Building Officials (ICBO) for a category of Special Inspector Certification is equivalent to the written portion of the above required examination, the Building Official may require such certification by ICBO in lieu of administering a written examination in that category. Applications shall be made in writing and shall be accompanied by a fee of $100, except that when the Building Official requires the ICBO certificate in lieu of administering a written examination, the application shall be accompanied by a fee of $65 and proof of the required certificate. A separate application and a separate fee shall be required for each type of work. Applicants failing to pass an examination shall be ineligible for re-examination for a period of 30 days. A new application and fee shall accompany each request for re-examination. Unless sooner revoked, Certificates of Registration for special inspectors shall expire biennially on June 30, and must be renewed by payment of a biennial renewal fee of X48 $50. SECTION 20. Section 306 of Title 26 of the Los Angeles County Code is amended by adding Subsection 306(1) to read: i) Structural Observation - Durinq the construction of a structure located in Seismic Zone No. 3 or No. 4 in which construction inspection, as defined in Section 302(c), Item 2, is required, the owner shall employ the engineer or architect responsible for the structural design or his designated engineer or architect to make visits to the site to observe 0 general compliance with the approved structural plans, specifications and change orders. The engineer or architect shall submit a statement in writing to the building official stating the site visits have been made and t anv deficiencies noted have been corrected. 9 - SECTION 21. The first sentence of Subsection 307(a) of Title 26 of the Los Angeles County Code is amended to read: Sec. 307(a) Use of and Occupancy. No building or structure in GFeups Ate R 1inx:2 shall be used or occupied, and no change in the existing occupancy classification of a building or structure or portion thereof shall be made until the building official has approved the building or structure for such use or occupancy. SECTION 22. Subsection 307(c) of Title 26 of the Los Angeles County Code is amended to read: (c) Certificate Issued - After final inspection when it is found that the building or.structure complies with this code and other laws which are enforced by the building official, and a request has been made by the per- mittee or owner, the building.official shall issue a Certificate of occu- pancy which shall contain the following: • EXCEPTION: Group R, Division 3 and M Occupancies. 1. The building permit number. 2. The address of the building. 3. The name and address of the owner. 4. A description of that portion of the building for which the certificate is issued. 5. A statement that the described,portion of the building complies with the requirements of this code for group and division of occupancy and the • use which the proposed occupancy is classified. 6. The name of the building official. Issuance of a Certificate of Occupancy shall not be construed as an approval of a violation of the provisions of this code or of other ordinan- ces of this jurisdiction. Certificates presuming to give authority to 10 violate or cancel the provisions of this code or of other ordinances of this jurisdiction shall not be valid. SECTION 23. The second paragraph of subsection 307(d) is amended to read: Such temporary Certificate of Occupancy shall be valid for a period not to exceed six months. The building official may, in writing, extend the temporary Certificate of Occupancy when he determines that the cir- cumstances so warrant, upon request of the owner or permittee. After the expiration of a temporary Certificate of Occupancy and any extension(s) thereof, the building or structure shall not be used or occupied until the building official has approved the building for such use or occupancy. SECTION 24. Section 307 of Title 26 of the Los Angeles County Code is amended by adding subsection 307(f) to read: (f) Revocation - The building official may, in writing, suspend or revoke a Certificate of Occupancy issued under the provisions of this code when- ever the certificate is issued in error, or on the basis of incorrect information supplied, or when it is determined that the building or struc- ture or portion thereof is in violation of any ordinance or regulation or any of the provisions of this code. SECTION 25. The first sentence of subdivision 308(a)2 of Title 26 of the Los Angeles County code 1s amended to read: 2. Portions of the unincorporated territory of the County of Los Angeles subject to severe flood hazard by reason of inundation, overflow, erosion or deposition of debris are established as floodways by • 12 " Chapter 11.60 of Title 11 of the Los Angeles County GFdina . Code. of Los Angeles. 11 SECTION 26. Section 308(d) of Title 26 of the Los Angeles County Code is amended by renumbering to Section 308(e). SECTION 27. Section 308 of Title 26 of the Los Angeles County Code is amended by adding subsection (d) to read: (d) METHANE GAS HAZARDS. Permits shall not be issued for buildings or structures regulated by this Code on, adjacent to, or within 1,000 feet of active, abandoned or idle oil or gas well(s) unless designed according to the recommendations contained to a report prepared by a licensed civil engineer and reviewed and approved by the Director of Public Works. The report shall contain a description of the investigation; study and recommendation to minimize the possible instrusion, and to prevent the accumulation of explosive concentrations of blogenic and petrogenic gases within and under enclosed portions of such building or structure. At the time of the final inspection, the licensed civil engineer shall furnish a • signed statement attesting that the structure has been constructed in accordance with his recommendations and that such building or structure is safe from intrusion of biogenlc and petrogenic gases and can be safely occupied. Abandoned or idle oil or gas well(s) within a property on which per- mats are to be issued for buildings or structures regulated by this Code shall be evaluated by a licensed civil and/or petroleum engineer and shall be abandoned or reabandoned If so determined by and in accordance with the applicable rules and regulations of the Division of Oil and Gas of the • State of California. This requirement is not applicable to abandoned or 12 idle oil or gas wells more than 1,000 feet of the proposed building or structures. As used in this Section, "well" shall mean any well as defined by Section 3008, Subdivisions (a) and (b) of the California Public Resources Code. SECTION 28. Subsection 304(f)4 of Title 26 of the Los Angles County Code is amended to read: 4. For processing geological or engineering reports submitted pursuant to Section 308 or 309: Geology Report $180.00 Geotechnical Engineering jSo11sj Report $180.00 Geotechnical jCombination Soils Engineering and Geologyj Report $260.00 Methane Gas Hazard Report $500.00 SECTION 29. Section 309 of Title 26 of the Los Angeles County Code is is amended to read: Section 309 Geotechnical Reports. The building official may require a geological or engineering report, or both, where to his opinion such reports are essential for the evaluation of the safety of the site. A geological report shall be prepared by a certified engineering geologist licensed by the State of California. This report shall contain a finding regarding the safety of the building site for the proposed struc- ture against hazard from landslide, settlement or slippage and a finding • regarding the effect that the proposed building or grading construction will have on the geologic stability of property outside of the building site in accordance with Section 832 of the California Civil Code. An A geotechnical engineering report shall be prepared by an a civil engineer 13 qualified to perform this work such as a geotechnical engineer expe0 enced 4n soil mechan4es. When both a geological and an geotechnical engineering report are required for the evaluation of the safety of a building site, the two reports shall be coordinated before submission to the county engineer. SECTION 30. Section 310 of Title 26 of the Los Angeles County Code is amended to read: Sec. 310. Earthquake Fault Maps - Special studies zones maps within Los Angeles County prepared by the State Geologist under Sections 2622 and 2623 of the California Resources Code which show traces of earthquake faults are hereby declared to be on the date of official issue a part of this code and may be referred to elsewhere in this code. Special studies zones maps revised by the State Geeleg4st under the above sections of the California Resources Code shall on the date of their official issue supersede pre- viously issued maps which they replace. Three sets of copies of each of the above maps shall at all times be maintained and updated by the County Engineer have been with a set depo- sited in the office of for use and examination by the public at the Department of Public Works, Department of Regional Planning and the Clerk of the Board of Supervisors of the County of Los Angeles all times ffiaiAtaiAed by said c;erk (OF use and examiAatiGA by the pUbliG. SECTION 31. Subsection 311(b) of Title 26 of the Los Angeles County Code • is amended to read: (b) Scope - The provisions of this section shall apply only to permits for buildings or structures on individual lots or parcels and are not intended to be supplementary to geologic investigations required to qualify divi- sions of land as set forth in Title 21 of the Los Angeles County Code, the Subdivision OFdinanee Code. 14 RCV BY:WILLDAN ASSOCIATES :11-29-89 8:21 8182844905- 2136952120:# 3 SECTION 32. Subsection 311(c) of Title 26 of the Les Angeles County Code is amended to read: (c) Definition - For the purpose of this section, a geologist shall be a registered geologist, licensed by the State Board of Registration for Geologist and Geophysicists to practice geology in California. SECTION 33. Subsection 311(d) of Title 26 of the Los Angeles County Code is amended to read: (d) Known Active Earthquake Faults - For the purpose of this section, known active earthquake faults are ' those faults which have had displacement within Holocene time (last 11,000 years) as defined in the most current issue of Special Publication 42 of the California Division of Mines and Geology. SECTION 34. The fifth paragraph of Subsection 311(e) of Title 26 of the • Los An;eles County Code is amended, beginning with the third sentence, to read: The trench shall be approximately perpendicular to the most probable direc- tion of the fault trace, at least 1~k feet wide, and at least up-te five feet in depth measured from natural grade or to a depth satisfactory to the County Engineer. The trench must be accessible for mapping and inspection by the County Engineer, when requested, and meet the requirements of Title 8 of the California Code of Regulations, Construction Safety Orders. The trench aiid • d t d f nee ex en urther than the full width of the proposed structure plus five feet beyond the traversed exterior walls. A known active earthquake fault shall be presumed nonexistent if an exposure is not found by the County Engineer or a geologist in the walls or floor of the trench. 15 RbV BY:WILLOAN ASSOCIATES :11-29-89 : 8:22 8182844905- 2136952120:9 4 SECTION 35. Subsection 311(f) of Title 26 of the Los Angeles County Code is amended to read: (f) Maps of Active Faults - The County Engineer shall maintain maps available to the public showing the location of known active earthquake faults. In the absence of additional information, the location of known active earthquake faults shall be as shown on special studies zones maps as required by Section 310. SECTION 36. The first paragraph of Subsection 311(g) of Title 26 of the Los Angeles County code is amended to read: (g) Special Studies Zones - Work within the special studies zones establish by-the-5t 4ounder Sections 2622 and 2623 of the California Public Resources Code shall comply with state codes 4ewaT poli- cies, ♦he state and cies, criteria, rules or regulations _rtabl____.i_...shed _ the state and appli- cable to such work. Fees established by Chapter 7.5 of Division 2 of the California Public Resources Code shall be collected and disbursed as required by state law. SECTION 37. The previously enacted amendment of UBC Section 408 is deleted. SECTION 38. The previously enacted amendment of UBC Section 413 is deleted. SECTION 39. The previously enacted amendment of UBC Section 422 is amended to read: • Sec. 422. UBC is the 4485 1988 edition of the Uniform Building Code as published by the International Conference of Building Officials. U.B.C. Standards Is the Uniform Building Code Standards, 4985 1988 edition. 16 Uniform Fire Code is the "Fire Code" as defined in this chapter. SECTION 40. UBC Subsection 505(e) is amended by adding subdivision 505(e)6 to read: 6. Area separation walls shall not be considered to create separate buildings for the purpose of automatic fire-sprinkler system requirements as set forth in Chapter 38. EXCEPTION - Buildings separated by continuous area separation walls of four-hour fire-resistive construction without openings. Buildings required to have automatic fire-sprinkler protection as set forth in Section 13113 of the Health and Safety Code are prohibited from using area separation walls in lieu of automatic fire-spinkler protection. SECTION 41. UBC Table No. 5-A is amended so that the first paragraph of the description of occupancy for Group B division 2 reads as follows: 2 - Drinking and dining establishments having an occupant load of less than • 50, wholesale and retail stores, office buildings, printing plants munici- pal police and fire stations, factories and workshops using material not highly flammable or combustible, storage and sales rooms for combustible goods, paint stores that comply with section 708 without bulk handling. SECTION 42. The third paragraph of UBC Section 701 is amended to read: Division 2 - Drinking and dining establishments having an occupant load of less than 50, wholesale and retail stores, office buildings, printing plants, municipal police and fire stations, factories and workshops using • material not highly flammable or combustible, storage and sales rooms for combustible goods, paint stores that comply with section 708 without bulk handling. (See Section 402 for definition of assembly building.) SECTION 43. UBC Subdivision 702(b)2 is amended by deleting exception 2 and renumbering existing exception 3 to become exception 2. SECTION 44. Subsection 702(c), which was added to the UBC by a previously enacted amendment is deleted. 17 SECTION 45. UBC Subsection 901(a) is amended by adding item 10 under Division 3 to read: 10. Aerosol Containers SECTION 46. UBC Subsection 901(d) is amended by deleting item 2 and renumbering items 3-5 to to be items 2-4. SECTION 47. The exception to UBC subsection 902(a) which was added by a previously enacted amendment is deleted. SECTION 48. The first sentence of UBC Section 903 is amended to read: Sec. 903 Group H Occupancies shall be located on property in accordance with Section 504, Table No. 9-C and this chapter. SECTION 49. UBC Subsection 905(b) is amended such that the first three paragraphs reads as follows: (b) Ventilation in Rooms Containing Hazardous Material - Rooms in which explosive, corrosive, combustible, flammable, toxic or highly toxic dusts, mists, fumes, vapors or gases are or may be emitted due to the processing, use, handling or storage of materials shall be mechanically ventilated as required by the Fire Code and the Mechanical Code. Emissions generated at work stations shall be confined to the area in which they are generated as specified in the Fire and Mechanical Codes. The location of supply and exhaust openings shall be in accordance with the Mechanical Code. Exhaust air contaminated by toxic or highly toxic material shall be treated in accordance with the Fire Code. • SECTION 50. UBC Table No. 9-A is amended by adding item 0.1 to read as _ follows: Condition Material Class 0.1 Aerosol Containers Storage Solid Liquid Gas lbs Gallons cu-ft (cu-ft) cu-ft 500 18 Table No. 9-A cont. Use-Closed System Materials Solid Liquid lbs Gallons (cu-ft) (lbs) 0.1 Aerosol Containers (500) Use-Open System Gas Solid Liquid Gas cu-ft lbs Gallons cu-ft (cu-ft) (lbs) SECTION 51. Section 1010, which was added to the UBC by a previously enacted amendment is renumbered to be Section 1011. SECTION 52. The previously enacted amendment to UBC Section 1202 is deleted. .SECTION 53. UBC Section 1204 is amended by adding the following imme- diately after the first sentence. (See also Section 3314) SECTION 54. The first paragraph of UBC Section 1211 is amended to read: Section 1211 - A manual and automatic approved fire alarm system shall be • installed in apartment houses that are three or more stories in height or contain more than 15 dwelling units and in hotels three or more stories in height or containing 20 or more guest rooms, in accordance with the Fire Code and Part 3 of Title 24 of the California Code of Requlations. SECTION 55. Section 1213, which was added to the UBC by a previously 0 enacted amendment, is renumbered, and is amended to read: Section 4,L13 1214 - Access and adaptability requirements for physically handicapped persons shall be provided in accordance with the requirements in Title 24, Part 2, of the California AdffliRistFatiye Code of Regulations. SECTION 56. Chapter 12 of UBC is amended by renumbering Sections 1214, 1215 and 1216 which were added to the UBC by previously enacted amendments to Sections 1.215, 1216 and 1217 respectively. SECTION 57. The first paragraph of Subsection 1603(b) of Title 26 of the Los Angeles County Code is amended to read: 19 (b) Roof Covering - Roof covering shall be "F'- Retardant" Class A or Class B roofing as specified in 11 ef Section 3203(e) Subsections 3204(a) and 3204(b). Tile roofs shall be fire stopped at the eave ends to preclude entry of flame or embers under the tile. SECTION 58. Subsection 1604(b) of Title 26 of the Los Angeles County Code is amended to read: (b) Roof covering for Type V,buildings housing R-3 or M Occupancies shall be any Class C built-up roofing assembly, or Class C prepared roofing, or a mineral-aggregate surfaced built-up roof complying with Subdivision 3 1 of Section 3203(f) 3204(d). Roof coverings for buildings housing R-1 Occupancies may be Class C. Roof coverings for other occupancies shall comply with Section 1704. SECTION 59. The previously enacted amendment to UBC Section 1704 is • amended by deleting the exceptions, and to read in its entirety: Roofs - Sec. 1704. Roof covering shall be Fe-FetaFdaRt Class A or Class B as classified in Subsections 3204(a) and 3204(b), except in Type V Fire Zone 3, where it may be as specified in Seeti-----('9_f) Table No. 32-A. Skylights shall be constructed as required in Chapter 34. Penthouses shall be constructed as required in Chapter 36. For use of plastics in roofs see Chapter 52. W For Attics: Access, Draft Stops and Ventilation, see Section 3205. For Roof Drainage, see Section 3207. For Fire Zone 4 and Buffer Fire Zone requirements, see Chapter 16. SECTION 60. The previously enacted amendment to UBC Subsection 1715(b) is deleted. 20 SECTION 61. Subsection 1715(1), added to the UBC by a previously enacted amendment, is deleted. SECTION 62. The previously enacted amendment of UBC Section 1807 is amended such that said section reads in its entirety as follows: Sec. 1807. High-Rise Buildings - High-rise buildings shall conform to Section 2-1807 of Part 2 of Title 24 of the California " :2 Code of Regulations. High-rise buildings shall be those set forth in Subsection (a) "Scope" of said Section 2-1807. The Fed ens St FU en wtili2ed in buildings eempiyinq with this seetien. Nothing in this chapter shall be deemed to modify the responsibility of the State Fire Marshal in the enforcement of this section. A Los Angeles County Fire Department approved helistop shall be installed on the roof of a building when required by the Fire Code. • For the convenience of users of this publication, said section 1807 is reprinted immediately followinq as it appeared on the date of printin Sec. 1807. (a) Scope 1. In addition to other applicable requirements of these regulations, the provisions of this section shall apply to every new building of any type of construction or occupancy having floors used for human occupancy located more than 75 feet above the lowest floor level having building access. EXCEPTIONS: 1. Hospitals as defined in Section 1250 of the Health and • Safety Code. 2. The following structures, while classified as high-rise buildings, shall not be subject to the provisions of this section, but shall conform to all other applicable provisions of these regulations. a. Buildings used exclusively as open parking garages_ b. Buildings where all floors above the 75-foot level are used exlusi- vely as open parking garages. 21 c. Floors of buildings used exclusively as open parking garages and located above all other floors used for human occupancy. d. Buildings such as power plants, lookout towers steeples grain houses and similar structures with noncontinuous human occupancy, when so determined by the enforcing agency. e. Buildings used exclusively for Jails and prisons. 2. For the purpose of this subsection !building access" shall mean an exterior door opening conforming to all of the following: a. Suitable and available for fire department use. b. Located not more than 2 feet above the adjacent round level c. Leading to a space, room or area having foot traffic communication capa- bilities with the remainder of the building. d. Designed to permit penetration through the use of fire department forcible-entry tools and equipment unless other approved arrangements • have been made with the fire authority having jurisdiction. 3. As used herein, "new building" shall mean a high-rise structure the construction of which is commenced on or after Jul 1 1974 For the pur- pose of this section, construction shall be deemed to have commenced when plans and specifications are more than 50 percent complete and have been presented to the local jurisdiction prior to July 1 1974 Unless all pro- visions of this section have been met the construction of such buildings shall commence on or before Janauarv 1 1976. 10 NOTE: It is the intent of this subsection that in determinin g the level from which the hig hest occupied floor is to be measured the enforcing agency should exercise reasonable judgment, including con- sideration of overall accessibility to the building by fire department personnel and vehicular equipment. When a building is situated on sloping terrain and there is building access on more than one level 22 the enforcing agency may select the level which provides the most logi- cal and adequate fire department access. (b) Certificate of Occupancy - All mechanical and electrical equipment and other required life safety systems shall be approved and installed in accordance with approved plans and specifications pursuant to this section and shall be tested and proved to be in proper working condition to the satisfaction of the building official before issuance of the Certificate of Occupancy. Such system shall be maintained in accordance with Title 19, California Code of Regulations, and the Fire Code, 1988 edition. (c) Automatic Sprinkler System - 1.1. Every high-rise building shall be protected by an automatic fire-extinguishing system installed in confor- mance to NFPA 13-1987 edition and the provisions of this subsection. EXCEPTION: Automatic sprinklers may be omitted in rooms or areas in accordance with Sections 3801(d) and 3804. • A.I. Sprinkler control valves, shutoff valves and a water-flow detecting device shall be provided at the lateral connection to the riser for each floor. Such valves and devices shall be electrically supervised to automa- tically sound an appropriate signal transmitted to locations in accordance with Section 1809(e). B. In Seismic Zones No. 2, No. 3 and No. 4, in addition to the main water supply, a secondary on-site supply of water equal to the hydraulically calculated sprinkler design demand plus 100 gallons per minute additional • for the total standpipe system shall be provided. This supply shall be automatically available if the principal supply fails and shall have a duration of 30 minutes. 2. Modifications - The following modifications of code requirements are permitted. A. The fire-resistive time periods set forth in Table No. 17-A may be 23 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. Vertical shafts other than stairway enclosures and elevator shafts may be reduced to one hour when sprinklers are installed within the shafts at alternate floors. The fire-resistive time period reduction as specified herein shall not apply to exterior bearing and non- bearing walls whose fire-resistive rating has already been reduced under the exceptions contained within Section 1803(a) or 1903(a). B. Except for corridors in Group B, Division 2 and Group R, Division 1 Occupancies and partitions separating dwelling units or guest rooms, all interior nonbearing partitions required to be one-hour fire-resistive construction by Table No, 17-A may be of noncombustibe construction without a fire-resistive time period. C. Fixed tempered glass may be used in lieu of openable panels for smoke- control purposes. D. Travel distance from the most remote point in the.floor area to a hori- zontal exit or to an enclosed stairway may be 300 feet. E. Fire dampers, other than those needed to protect floor-ceiling assemblies to maintain the fire resistance of the assembly, are not required. F. Emergency windows required by Section 1204 are not required. (d) Smoke Detection Systems - At least one approved automatic smoke detec- • for suitable for the intended use shall be installed: 1. In every mechanical equipment, electrical, transformer, telephone equipment, elevator machine or similar room. 2. In the main return and exhaust air plenum of each air-conditioning system and located in a serviceable area downstream of the last.duct inlet. 24 3. At each connection to a vertical duct or riser serving two or more stories from a return-air duct or plenum of an air-conditioning system. In Group R, Division 1 Occupancies, an approved smoke detector may be used in each return-air riser carrying not more than 5000 cfm and serving not more than 10 air inlet openings. The actuation of any detector required by this section shall operate the voice alarm system and shall place into operation all equipment ecessarv to Drevent the recirculation of smoke. (e) Alarm and Communication Systems - Every high-rise building shall be provided with a state fire marshall approved and listed.fire alarm system. The alarm and communication systems shall be designed and installed so that damage to any terminal unit or speaker will not render more than one zone of the system inoperative. The voice alarm and public address system may be a combined system. • When approved the fire department communications system may be combined with the voice alarm system and the public address system. Three communication systems which may be combined as set forth above shall be provided as follows: 1. Voice alarm system - The operation of any smoke detector, sprinkler, water flow device or manual fire alarm station shall automatically sound an alert signal to the desired areas followed by voice instructions giving appropriate information and direction to the occupants. • Upon activation of the automatic sprinkler sy stem, an y automatic fire- detection device req uired b y this section or any special hazard fire- protection or extinguishing system, an automatic voice alarm signal shall sound on the floor where activated and an audible and visual signal shall be transmitted to the central control station. The content of the voice alarm in each instance shall be determined by the fire authority having 25 jurisdiction in cooperation with the building owner or manager. The central control station shall contain controls for the voice alarm system so that a selective or general voice alarm may be manually ini- tiated. The system shall be supervised to cause the activation of an audible- trouble signal in the central control station upon interruption or failure of the audiopath including amplifiers, speaker wiring, switches and electrical contacts and shall detect opens, shorts and grounds which might Impair the function of the system. The alarm shall be designed to be heard clearly by all occupants within the building or designated portions thereof as is required for the public address system. EXCEPTION: In lieu of a voice alarm signal and when approved by the enforcing agency having jurisdiction, the local alarm system may • employ any sounding device or devices which are approved and listed by the state fire marshall. The sounding devices of such alternate system shall have a distinctive tone and shall be arranged to emit intermittent, prolonged or continuous sound signals for a full period of 10 seconds. to be immediately followed by an intermission or periods of silence of 5 seconds, before the signal is repeated. Such signal shall continue to sound until manually terminated at the central control station but in no case shall such manual operation be • arranged to cause termination in less than 3 minutes. 2._ Public address system - Speakers or signaling devices used to sound the voice or fire alarm shall be so located as to be clearly heard on the floor where activated, except as may be otherwise found necessary or acceptable by the enforcing agency. A public address communication system designed to be clearly heard by 26 all occupants of the building shall operate from the central control sta- tion. It shall be established on a selective or general basis to the following terminal areas: A. Elevators. B. Elevator lobbies. C. Corridors. D. Exit stairways. E. Rooms and tenant spaces exceeding 1000 square feet in area. F. Dwelling units in apartment houses. G. Hotel guest rooms or suites. 3. Fire department communication system - A two-way fire department com- munication system shall be provided for fire department use. It shall operate between the central control station and every elevator, elevator lobby and entry to every enclosed exit stairway. is 4. Alarm transmission - Unless the central control station is constantly manned by competent and experienced operating personnel conforming to Section 1-3, NFPA 72D-1986, Proprietary Protective Signaling Systems, voice or fire alarm and trouble signals shall be automatically retransmitted to one of the following: a. An approved central station conforming to NFPA 71-1982, Central Station Signaling System. b. A supervisory station or an approved remote station conforming to NFPA 72C-1986, Remote Station Protective Sig naling Systems. • c. When approved b y the enforcing agency having jurisdiction, such signals may be retransmitted directly to the fire department in accordance with the California Electrical Code. 5. Annunication - Alarm, waterflow and trouble signals shall be annunciated in the central control station by means of an audible signal and a visual display, which indicates the building, floor, zone or other 97 designated area from which the alarm, waterflow or trouble signal origi- nated. For purposes of annunciation, zoning shall be in accordance with the following, unless otherwise deemed necessary by the enforcing agency: a. When the system serves more than one building, each building shall be considered as a separate zone. b. Each floor shall be considered as a separate zone. c. Each section of floor separated by area separation walls or by horizontal exits shall be considered as a separate zone. 6. Special provisions - A. When a building conforms to the provisions of this section, the manually operated fire alarm system otherwise specified by Section 1216 for Group R, Division 1 Occupancies shall not be required. B. The fire-detection devices specified in Section 1210(a) need not be interconnected to the fire alarm system required by this section. tral Control Station - A central control station for fire deoart- • ment operations shall be provided in a location approved by the fire department. It shall contain: 1. The voice alarm and public address system panels. 2. The fire department communications Danel. 3. Fire detection and fire alarm system annunciator panels. 4. Annunciator visually indicating the location of the elevators and whether they are operational'. 5. Status indicators and controls for air-handling systems. 6. Controls for unlocking all stairway doors simultaneously. • 7. Sprinkler valve and water-flow detector display panels. B. Standby power controls and status indicators. 9. A telephone for fire department use with controlled access to the public telephone system. 28 10. Elevator control switches for switching of emergency power. 11. Fire pump status indicators. 12. Other fire-protection equipment and systems controls as required by the enforcing agency having jurisdiction. Central control stations shall not be used for the housing of any boiler, heating unit, generator, combustible storage, or similar hazardous equip- ment or storage. (g) Smoke Control - Natural or mechanical ventilation for the removal of products of combustion shall be provided in every story and shall consist on one of the following: 1. Easily identifiable windows or panels which are manually openable or approved fixed tempered glass shall be provided in the exterior walls. They shall be distributed around the perimeter of the building at not more than 50-foot intervals at the rate of 20 square feet per 50 lineal feet. • EXCEPTION: In Group R, Division 1 Occupancies each guest room or suite having an exterior wall may be provided with -a minimum of 2 square feet of venting area. 2. When a complete and approved automatic sprinkler system is installed the mechanical air-handling equipment may be designed to accomplish smoke removal. Under fire conditions, the return and exhaust air shall be moved directly to the outside without recirculation to other sections of the building. The airhandling system shall provide a minimum of one exhaust air change each 10 minutes for the area involved. • 3. Any other approved design which will produce equivalent results. (h) Elevators - Elevators and elevator lobbies shall comply with the pro- visions of Chapter 51 and the following: 29 NOTE: A bank of elevators is a group of elevators or a single ele- vator controlled by a common operating system; that is, all those elevators which respond to a single call button constitute a bank of elevators. There is no limit on the number of cars which may be in a bank or group but there may be not more than four cars within a common hoistway. 1. Elevators on all floors shall open into elevator lobbies which are separated from the remainder of the building, including corridors and other exits, by walls extending from the floor to the underside of the fire- resistive floor or roof above. Such walls shall be of not less than one- hour fire-resistive construction. Openings through such walls shall conform to Section 3305(h). EXCEPTIONS: 1. The main entrance level elevator lobby in office buildings. • 2. Elevator lobbies located within an atrium complying with the provi- sions of Section 1715. 3. In fully-sprinklered office buildings, corridors may lead through enclosed elevator lobbies if all areas of the building have access to at least one required exit without passing through the elevator lobby. 2. Each elevator lobby shall be provided with an approved smoke detector located on the lobby ceiling. When the detector is activated elevator doors shall not open and all cars serving that lobby are to return to the main floor and be under manual control only. If the main floor detector or • a transfer floor detector is activated, all cars serving the main floor or transfer floor shall return to a location approved by the fire department and building official and be under manual control only. The smoke detector 30 is to operate before the optical density reaches 0.03 per foot. The detec- tor may serve to close the lobby doors. 3. Elevator hoistways shall not be vented through an elevator machine room. Cable slots entering the machine room shall be sleeved beneath the machine room floor and extend to not less than 12 inches below the shaft vent to inhibit the passage of smoke into the machine room. 4. Special requirements - Except as otherwise controlled by the California Mechanical Code. and Title 8. CCR. Subchapter 6. elevators shall conform to Chapter 51.- (i) Standby Power, Light and Emergency Systems - 1. Standby power. Standby power generatirq system conforming to U.B.C. Standard No. 18-1 shall be provided. The system shall be equipped with suitable means for automatically starting the generator set upon failure of the normal electrical sUDDly svstems and for automatic transfer of all functions 40 required by this section at full power within 60 seconds of such normal service failure. Systems supervisions with manual start and transfer features shall be provided at the central control station. An on-premises fuel supply sufficient for not less than two hours (for SFM) six hours at full demand operation of the system shall be provided. Where fire pumps are required, an eight-hour fuel supply shall be provided. The standby system shall have a capacity and rating that would supply all equipment required to be operational at the same time. The generating • capacity need not be sized to operate all the connected electrical equip- ment simultaneously. All power, lighting, signal and communication facilities specified in (d), (e), (f), (g), (h), (i) and (J) as applicable; fire pumps required to maintain pressure, stair pressurization fans, standby lighting and normal 31 circuits supplying exit signs and exit illumination shall be transferable to the standby source. The installation of any combustion engine and gas turbines associated with such power-generating systems shall be in accordance with the California Electrical Code. 2. Standby lighting - Standby lighting shall be provided as follows: a. Separate lighting circuits and fixtures sufficient to provide light with an intensitv of not less than one footcandle measured at floor level in all exit corridors, stairways, smokeproof enclosures, ele- vator cars and lobbies and other areas which are clearly a part of the escape route. b. All circuits supply lighting for the central control station and mechanical equipment room. 3. Emergency systems - The following are classified as emergency systems • and shall operate within 10 seconds of failure of the normal power supply: a. Exit sign and exit illumination is required by Sections 3313 and 3314. b. Elevator car lighting. . Fire alarm svstem: d. Fire-detection system. e. Sprinkler alarm system. Installation of emergency electrical systems shall be in accordance with the provisions of the California Electrical Code. When the standby power-operation s ystem reaches full operating capa- city, the emergency electrical systems and equipment shall be transferred thereto. 32 .(J) Exits - Exits shall comply with other requirements of this code and the following: 1. All stairway doors which are locked from the stairway side shall have the capability of being unlocked simultaneously without unlatching upon a signal from the central control station. Upon failure of electrical power, the locking mechanisms shall be retracted to the unlocked position. 2. When stairway doors are locked from the stairway side, a telephone or other two-way communications system connected to an approved emergency ser- vice which operates continuously shall be provided at not less than every fth floor in each reouired stairwav where other orovisions of this code • permit the doors to be locked. (k) Seismic Considerations - In Seismic Zones No. 2, No. 3 and No. 4, the anchorage of mechanical and electrical equipment required for life safety systems, including fire pumps and elevator drive and suspension systems, shall be desiqned in accordance with the requirements of Section 2312. SECTION 63. The previously enacted exception to UBC Subdivision 2312(J)36 Is relocated to be exception 2 to UBC Subsection 2908(b). All other previously enacted amendments to UBC Section 2312 are deleted. SECTION 64. UBC Subdivision 2312(d)l is amended by adding an exception to u read: EXCEPTION: For structures in Occupancy Category I, a geotechnicai and seismological report shall be submitted to the building official for each site for determination of potential earthquake hazard. At the discretion of the building official, portions of this requirement may be waived. SECTION 65. All previously enacted amendments to UBC Section 2411 are deleted. 33 J SECTION 66. UBC Subsection 2501(e) is amended, beginning after the second paragraph to read: End-jointed wood products shall not be used for structural purposes unless specifically approved by the building official. Plywood used for structural purposes shall be of species 1, 2, 3 or 4 and shall be one of the grades specified in U.B.C. Standard No. 25-9. SECTION 67 DELETED. SECTION 68. UBC Subsection 2903(b) is amended to read: (b) Protection of Adjoining Property - The requirements for protection of adjacent property and depth to which protection is required shall be a defined by Section 832 of the California Civil Code. maw. song excavation to be made to depth of 12 feet -less betew the grade shall PFGtect the emeayat4on so that the sell of adjGWR9 PFOpepty • will net ie settle,but shall of be 11aWe fOF the e*pense of save ties wheFe his e*cavatlen is ROt 4R excess of 12 feet in depth. BefeFe 0 The ewneF5 of the adjoining PFOpeFties shall be giYeA access to the 34 tie to be made di 2 feet v~TT9-i~se4l W11 net eaYe 4R OF settle aAd shall extend t he leufidat4eR of any of 12 feet below 9Fade at his J y buildings - - e*pense The ewneF of the adj8Jn -y b ldi y shall extend the G a ti of these bull diRgs `e a-depth of 12 feet below QFade at his awn expense, as SECTION 69. UBC Subsection 2907(a) is amended to read: (a) General - Footings and foundations, unless otherwise specifically pro- vided, shall be constructed of masonry, concrete or treated wood in confor- mance with U.B.C. Standard No. 29-3, and in all cases shall extend below the frost line. Footings of concrete and masonry shall be of solid material. Foundations supporting wood shall extend at least 6 inches above the adjacent finish grade. All exterior footings shall extend into firm • bearing undisturbed-soil or controlled compacted fill, or, if in expansive soil, to a depth sufficient to minimize movements in the underlying soil due to moisture changes in the.soil. Footings shall have a minimum depth as indicated in Table No. 29-A unless another depth is recommended by a geotechnical engineering report and approved by the building official (own elation 4yestigatien SECTION 70. The second paragraph of UBC Subsection 2907(e) is deleted. SECTION 71. The first paragraph of Subsection 2907(j), added to the UBC by . previous enactment, is amended to read: (j) Foundation on Expansive Soil - Foundation systems on expansive soil shall be constructed in a manner that will minimize damage to the structure 35 RCV BY:WILLCAN ASSOCIATES :11-29-89 8:23' 8182844905- 2138952120:0 5 from movement of the soil. Slab-on-grade and mat-type footings buildings located on expansive soils may be designed in accordance with the provi- sions of UBC Standard No. 29-4 or such other engineering design based upon geotechnical recommendation as approved by the building official WHea For residential-type buildings, where such an approved method of construc- tion is not provided, foundations and floor slabs shall comply with the following requirements. SECTION 72. UBC Section 2909 is amended by adding subsections 2909(h) and 2909(1) to read: O Inspection of Piles - The installation of piles shall be continuously observed by the geotechnical engineer or his qualified representative responsible for that portion of the project. The geotechnical engineer or • said qualified representative shall make a report of the pile driving operation giving such pertinent data as: 1. The physical characteristics of the pile driving equipment. 2. Identify marks for each pile. 3. The total depth of embedment of each pile 4. The design formula used and the permanent penetration under the last ten blows, when the allowable pile loads are determined by a dynamic load formula. A copy of the report shall be submitted to the building official • (1) Inspection of Caissons - The provisions of Sec 2909(b) shall apply to cast-in-place belled caissons. The belled base of each pier shall be inspected by the geotechnical engineer or his qualified representative to verify foundation soil classification The slope sides of the belled bases shall be limited to a slope of 2 vertically to 1 horizontal) unless 36 reinforced as for a concrete spread footing. SECTION 73. All previously enacted amendments to UBC chapter 32 are deleted. SECTION 74. The first paragraph of UBC Section 3203 is amended to read: Roof Covering Requirements - Sec. 3203. The roof covering on any structure regulated by this code shall be as specified in Table Ole. 3? -A Section 1704 and as classified in section 3204. SECTION 75. The previously enacted amendment to UBC subsection 3301(e) is amended such that said subsection reads in its entirety as follows: (e) Building Accessibility - Portions of buildings shall be accessible as required in the regulations in Title 24, Part 2 of the California "a-'y2 Code of Regulations and all primary entrances to a building which are required to be accessible shall be usable by the physically han- dicapped and be on a level that would provide accessibility to the eleva- tors, where provided. • SECTION 76. The third paragraph of UBC subsection 3307(d) is deleted. SECTION 77. The previously enacted amendment to UBC subsection 3310(b) is deleted. SECTION 78. UBC Subsection 3314(a) is amended to read as follows: (a) Where Required - When two or more exits are required from a room, area or floor level, Eexit signs shall be installed at required exit doorways and where otherwise necessary to clearly indicate the direction of egress when the exit serves an occupant load of 50 or more. • EXCEPTIONS: 1. Main exterior exit doors which obviously and clearly are identifiable as exits need not be signed when approved by the building official. 2. Group R, Division 3, and individual units of Group R, Division 1 Occupancies. 37 3. Exits from rooms or areas with an occupant load of less than 50 when located within a Group I, Division 1 or 2 Occupancy or a Group E. SECTION 79. UBC Section 3314 is amended by adding subsection (e) to read: (e) Low-level Exit Signs - Where exit signs are required by Section 3314(a), approved low-level exits signs which are internally or externally illuminated, or self-luminous, shall be provided in Group R, Division 1 Occupancies. SECTION 80. Section 3500, which was previously added to the UBC is amended to read: Section 3500 - Group R Occupancies except detached single-family dwellings shall conform to the applicable regulations concerning noise insulation stan- dards set forth in the California AdfiRist a Code of Regulations, Title 24, Part 2, Appendix Chapter 2-35. Sound transmission control between dwelling units within a building and residential buildings excluding detached single family dwellings established in the Noise Element of the General Plan of the • County of Los Angeles shall be regulated by this chapter. For the convenience of the users of this publication, these standards as they appeared on the date of printing of this chapter are reprinted immediately following. SOUND TRANSMISSION CONTROL Sec. 3501.(a) General - Purpose and scope. The purpose of this section is to establish uniform minimum noise insulation performance standards to protect persons with new hotels, motels, dormitories, long-term care facilities, apartment houses and dwellings other than detached • single-family dwellings from the effects of excessive noise, including, but not limited to, hearing loss or impairment and interference with speech and sleep. These regulations shall apply to all applications for buildings permits 38 made subsequent to August 22, 1974. 2. Definitions - The following special definitions shall apply to this section: SOUND TRANSMISSION CLASS (STC) is a single number rating used to compare walls, floor-ceiling assemblies and doors for their sound-insulation properties with respect to speech and small household appliance noise. The STC is derived from laboratory measurements of sound transmission loss across a series of 16 test bands. Laboratorv STC ratings should be used to the greatest extent possible in determining that the design complies with this section. FIELD SOUND TRANSMISSION_CLASS _(FSTC) is a single number rating similar to STC, except that the transmission loss values used to derive the FSTC are measured in the field. All sound transmitted from the source room to the receiving room is assumed to be through the separating wall or floor-ceiling assembly. • This section does not require determination of the FSTC, and field measured values of noise reduction should not be reported as transmission loss. IMPACT INSULATION CLASS (TIC) is a single number rating used to compare the effectiveness of floor-ceiling assemblies in providing reduction of impact generated sounds such as footsteps. The IIC is derived from laboratory measurements of impact sound pressure level across a series of 16 test bands using a standarized tapping machine. Laboratory IIC ratings should be used to the greatest extent possible in determining that the • design complies with this section. FIELD IMPACT INSULATION CLASS (FIIC) is a single number rating similar to the IIC, except that the impact sound pressure levels are measured in the field. NOISE ISOLATION CLASS (NIC) is a single number rating derived from 39 measured values of noise reduction between two enclosed spaces that are connected by one or more paths. The NIC is not adjusted or normalized to a standard reverberation time. NORMALIZED NOISE ISOLATION CLASS (NNIC) is a single number rating similar to the NIC, except that the measured noise reduction values are normalized to a reverberation time of 1/2 second. NORMALIZED A-WEIGHTED SOUND LEVEL DIFFERENCE (Dn) means, for a specified source room sound spectrum, On is the difference, in decibels, between the average sound levels produced in two rooms after adjustment to the expected acoustical conditions when the receiving room under test is normally furnished. DAY-NIGHT AVERAGE SOUND LEVEL (Ldn) is the A-weighted equivalent continuous sound exposure level for a 24-hour period with a IOdb adjustment ` added to sound levels occurring during nightime hours (10 p.m. to 7 a.m.). COMMUNITY NOISE EQUIVALENT LEVEL (CNEL) is a metric similar to the Ldn, • except that a 6db adjustment is added to the equivalent continuous sound exposure level for evening hours (7 p.m. to 10 p.m.) in addition to the IOdb nightime adjustment used in the Ldn• 3., Relevant standards - The current edition of the following standards are generally applicable for determining compliance with this section. Copies may be obtained from the American Society for Testing and Materials (ASTM) at 1916 Race Street, Philadelphia, Pennsylvania 19103. ASTM C 634 Standard Definitions of Terms Relating to Environmental • Acoustics. ASTM E 90 Standard Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions. ASTM E 336 Standard Test Methods for Measurement of Airborne Sound Insulation in Buildinqs. 40 ASTM E 413 Standard Classification for Determination of Sound Transmission Class. ASTM E 492 Standard Method of Laboratory Measurement of Impact Sound Transmission Through Floor-Ceiling Assemblies Using the Tapping Machine. ASTM E 497 Standard Recommended Practice for Installation of Fixed Partitions of Light Frame Type for the Purpose of Conserving Their Sound Insulation Efficiencv. ASTM E 597 Recommended Practice for Determining A Single-Number Rating of Airborne Sound Isolation in Multi-unit Building Specifications. ASTM E 966 Standard Guide for Field Measurement of Airborne Sound Insulation of Building Facades and Facade Elements. ASTM 989 Standard Classification for Determination of Impact Insulation Class (IIC). ASTM E 1007 Standard Test Method for Field Measurement of Tapping Machine Impact Sound Transmission Through Floor-Ceiling Assemblies and Associated • Support Structures. ASTM E 1014 Standard Guide for Measurement of Outdoor A-Weighted Sound • Levels. 4. Complaints - Where a complaint as to noncompliance with this article requires a field test, the complainant shall post a bond or adequate funds in escrow for the cost of said testing. Such costs shall be chargeable to the complainant if the field tests show compliance with these regulations. If the tests show noncompliance, then testing costs shall be borne by the owner or builder. 5. Local modification - the governing body of any city or county may, by ordinance, adopt changes or modifications to the requirements of this section as set forth in Section 17922.7 of the Health and Safety Code. (a.1) Interdwelling Sound Transmission Control 1. Wall and 41 floor-ceiling assemblies - Wall and floor-ceiling assemblies separating dwelling units or guest rooms from each other and from public or service areas such as interior corridors garages and mechanical spaces shall provide airborne sound insulation for walls and both airborne and impact sound-insulation for floor-ceiling assemblies EXCEPTION: Impact sound insulation is not required for floor-ceiling assemblies over nonhabitable rooms or spaces not designed to be occupied, such as garages mechanical rooms or storage areas (b.1) Airborne Sound Insulation - All such acoustically rated separating wall and floor-ceiling assemblies shall provide airborne sound insulation equal to that required to meet a Sound Transmission Class (STC) rating of 50 based on laboratory tests as defined in ASTM Standards E 90 and E 413. Field-tested assemblies shall meet a Noise Isolation Class (NIC) rating of 45 for occupied units and a Normalized Noise Isolation Class (NNIC) rating of 45 for unoccupied units as defined in ASTM Standards • E 336 and E413. ASTM Standard E 597 may be used as a simplified procedure for field tests of the airborne sound isolation between rooms in unoccupied buildings. In such tests, the minimum value of Dn is 45db for compliance. Entrance doors from interior corridors together with their perimeter seals shall have Sound Transmission Class (STC) rating not less than 26 Such tested doors Shall operate normally with commercially available seals Solid-core wood slab doors 1-3/8 inches thick minimum or 18-gauge insu- lated steel slab doors with compression seals all around including the threshold, may be considered adequate without other substantiating infor- mat ion. Field tests of corridor walls should not include segments with doors If such tests are Impratical, however, the NIC or NNIC rating for the 42 composite wall-door assembly shall not be less than 30. Penetrations or openings in construction assemblies for piping, electrical devices, recessed cabinets, bathtubs, soffits, or heating, ventilating or exhaust ducts shall be sealed, lined, insulated or otherwise treated to maintain the required ratings. (.1) Impact Sound Insulation - All acoustically rated separating floor-ceiling assemblies shall provide impact sound insulation equal to that required to meet an Impact Insulation Class (IIC) rating of 50 based on laboratory tests as defined in ASTM Standards E 492 and E 989. Field-tested assemblies shall meet a Field Impact Insulation Class (FIIC) rating of 45 for both occupied and unoccupied units as defined in ASTM Standards E 1007 and E 989, with the exception that the measured impact sound pressure levels shall not be normalized to a standard amount of absorption in the receiving room. Floor coverings may be included in the assembly to obtain the required • ratings. These coverings must be retained as a permanent part of the assembly and may be replaced only by other floor coverings that provide the required impact sound insulation. (d.1) Tested Assemblies - 1. Laboratory-tested wall or floor-ceiling designs having STC or IIC ratings of 50 or more may be used by the building official to determine compliance with this section during the plan review phase. Field tests shall be required by the building official when evidence of sound leaks or flanking paths is noted, or when the separating • assembly is not built according to the approved design. Generic sound transmission control systems as listed in the Catalo of STC and IIC Ratings for Wall and Floor-Ceiling Assemblies, as published by the Office of Noise Control, California Department of Health Services, or the Fire Resistance Design Manual, as published by the Gypsum 43 Association, may be used to evaluate construction assemblies for their sound transmission properties. Other tests from recognized laboratories may also be used. When ratings for essentially similar assemblies differ, and when ratings are below STC or IIC 50, field testing may be used to demonstrate that the building complies with this section. 3. For field testing, rooms should ideally be large and reverberant for reliable measurements to be made in all test bands. This is often not possible for bathrooms, kitchens, hallways or rooms with large amounts of sound-absorptive materials. Field tests results should however, report the measured values in all bands, noting those which do not meet relevant ASTM criteria for diffusion. 4. It should be noted that STC ratings do not adequately characterize the sound insulation of construction assemblies when the intruding noise is predominantly low pitched, as is often produced by amplified music or by large pieces of mechanical equipment. • It should also be noted that the transmission of impact sound from a standardized tapping machine may vary considerably for a given design due to differences in specimen size, flanking transmission through associated structure and the acoustical response of the room below. Laboratory IIC values should therefore be used with caution when estimating the performance of hard-surfaced floors in the field. Additionally. IIC ratings may not always be adequate to characterize the subjectively annoying creak or boom generated by footfalls on a limber floor. • (e.1 ) Certification - Field testing, when required, shall be done under the sup ervision of a person exp erienced in the field of acoustical testing and engineering and who shall forward test results to the building official showing that the sound isolation requirements stated above have been met. Documentation of field test results should generally follow the 44 requirements outlined in relevant ASTM standards. (f) Airborne Sound Insulation Field Tests - When required, airborne sound insulation shall be determined according to the applicable Field Airborne Sound Transmission Loss Test procedures of U.B.C. Standard No. 35-3. All sound transmitted from the source room to the receiving room shall be considered to be transmitted through the test partition. (g) Impact Sound Insulation Field Test - When required, impact sound insulation shall be determined in accordance with U.B.C. Standard No. 35-2. (h) Exterior Sound Transmission Control - 1. Application consistent with local land-use standards, residential structures located in noise critical areas, such as proximity to highways, county roads, city streets railroads, rapid transit lines, airports or industrial areas shall be designed to prevent the intrusion of exterior noises beyond prescribed levels. Proper design shall include, but shall not be limited to, orientation of the residential structure, setbacks, shielding and sound • insulation of the building itself. 2. Allowable interior noise levels - Interior noise levels attributable to exterior sources shall not exceed 45db in any habitable room. The noise metric shall be either the Day-night Average Sound Level (Ldn) or the Community Noise Equivalent Level (CNEL), consistent with the noise element of the local general plan. NOTE: Ldn is the preferred metric for implementing these standards. Worst-case noise levels, either existing or future, shall be used as the • basis for determining compliance with this section. Future noise levels shall be predicted for a period of at least ten years from the time of building permit application. 3. Airport noise sources - Residential structures to be located where 45 the annual Ldn or CNEL (as defined in Title 21, Subchapter 6, CCR) exceeds 60db shall require an acoustical analysis showing that the proposed design will achieve prescribed allowable interior level. For public-use airports or heliports, the Ldn or CNEL shall be determined from the airport land-use plan prepared by the county wherein the airport is located For military bases, the Ldn shall be determined from the facility Air Installation Compatible Use Zone (AICUZ) plan. For all other airports or heliports or public-use airports or heliports for which a land-use plan has not been developed, the Ldn or CNEL shall be determined from the noise element of the general plan of the local jurisdiction. When aircraft noise is not the only significant source, noise levels from all sources shall be added to determine the composite site noise level. 4. Other noise sources - Residential structures to be located where the Ldn or CNEL exceeds 60db shall require an acoustical analysis showing that • the proposed design will limit exterior noise to the prescribed allowable interior level. The noise element of the local general plan shall be used to the greatest extent possible to identify sites with noise levels potentially greater than 60db. 1.5. Compliance - Evidence of compliance shall consist of submittal of an acoustical analysis report, prepared under the supervision of a person experienced in the field of acoustical engineering, with the application for a building permit. The report shall show topographical relationships • of noise sources and dwelling sites, identification of noise sources and their characteristics, predicted noise spectra and levels at the exterior of the proposed dwelling structure considering present and future land usage, basis for the prediction (measured or obtained from published data) noise attenuation measures to be applied, and an analysis of the noise 46 insulation effectiveness of the proposed construction showing that the prescribed interior noise level requirements are met. If interior allowable noise levels are met by requiring that windows be unopenable or closed, the design for the structure must also specify a ventilation or airconditioning system to provide a habitable interior environment. The ventilation system must not compromise the dwelling unit or guest room noise reduction. 2.6. Field Testing - When inspection indicates that the construction is not in accordance with the approved design, or that the noise reduction is compromised due to sound leaks or flanking paths, field testing may be required. A test report stowing compliance or noncompliance with prescribed interior allowable levels shall be submitted to the building official. Measurements of outdoor sound levels shall generally follow the guildelines in ASTM E 1014. • Field measurements of the A-weighted airborne sound insulation of buildings from exterior sources shall generally follow the guidelines in ASTM E 966. For the purpose of this standard, sound level differences measured in unoccupied units shall be normalized to a receiving room reverberation time of one-half second. Sound level differences measured in occupied units shall not be normalized to a standard reverberation time. SECTION 81. Subsection 3802(b)5 which was added to the UBC by a • previously enacted amendment is amended by adding an exception to read: EXCEPTION: Buildings used exclusively as open parking garages. SECTION 82. Subsection 3802(g), exception 3, which was added to the UBC by a previously enacted amendment is renumbered to exception 2. 47 SECTION 83. UBC section 4302 is amended by adding subsection (f) to read: (f) Cellular Concrete. 1. Use and application. Controlled-density cellular concrete, when used or applied, shall be in accordance with the use of materials Bulletin No. 65 of the Federal Housing Administration United States Department of Housing and Urban Development. EXCEPTIONS: 1. Regardless of the provisions of Subsections 3.2 3.3 3.4 and 3.6 in Section 3 relating to proportioning mixing and testing in Bulletin No. 65, the following shall apply to these regulations. A. Field-control weighings for control of the wet-unit weight shall be made. The design wet-unit weight for field control of the concrete shall be based upon previously established data for the relation between the wet-unit weight and the air-dry unit weight at 28 days for the mix being placed. Field-control weighings for determining the wet-unit weight shall be made at the mixer discharge and at the point of deposit. Make one pair of weighings per batch for batch-type • mixers unless equipment is provided with scales allowing the operator to adequately weight materials. For continuous weight-instrumented batch mixers, make one pair of weighings per 10 yards3. The gain in unit weight between the mixer discharge and point of deposit shall not unit weight between the mixer discharge and point of deposit shall not exceed 5 percent. The wet-unit weight at the point of deposit of the concrete shall not exceed +5 percent of the design wet-unit weight A variation exceeding +5 percent of the design wet-unit weight shall require a modification of the mix proportions, a change of materials or a change in the mixing procedures. B. When tests are required by the building official, they shall be performed in the following manner: Two test cylinders, for compressive strength tests, shall be made for each 8,000 feet2 of the surface area 48 placed. A minimum of two test cylinders shall be made each day. Each strength test result shall be the average of two cylinders from the same sample tested at 28 days or at a specified earlier age. C. The minimum air-dry density shall be 90 pounds/feet3• The minimum design compressive strength shall be 1,000 pounds/inch2 when the curing procedure specified herein is applied. The minimum design compressive strength shall be 1,250 pounds/inch2 if the slab is placed in a covered area of a building and a specified curing medium is not applied. The specified design compressive strength shall be increased 20 percent when the specified strength is greater then 1,000 pounds/inch2 and the slab is placed in a covered area of a building and a specified curing medium is not applied. 0. The cellular concrete shall be sampled at the point of deposit in accordance with the applicable procedures of ASTM C 172, Sampling Fresh Concrete. Cylinder molds shall be either 3 inches by 6 inches or 6 • inches by 12 inches. Lightly tap the sides of the mold with a rubber hammer while filling the mold instead of nodding the mix. Moist cure the specimens for 7 days at 73.4°F..t 3° F. At the age of 7 days, remove the specimens from the moist condition and store in a temperature of 73.40F ± 30F. and a relative humidity of 50 f 10 percent for 21 days, remove and air dry until the time of test at 28 days. The compressive strength test shall be in accordance with ASTM C 39, Compressive Strength of Cylindrical Concrete Specimens. Determine the-air dry unit • weight at 28 days. 2. Regardless of the provisions of Subsections 4.1 and 4.2 in Section 4, rela- ting to placing, finishing and curing in Bulletin No. 65, the following shall apply to these regulations. 49 A. The concrete shall be placed, finished and cured to produce a level, smooth surface. The concrete shall be placed in a single layer to a minimum thickness of 11/2 inches. The deviation from a plan shall not exceed 1/4 inch in any 10 feet. The final finish of the concrete shall be suitable for the application of the specified wear-resistant covering. Cracks wider than 1/8 inch shall be repaired. B. Install a water-resistant membrane between wood or plywood subfloors and the cellular concrete to prevent leakage of the concrete and wetting of the subfloor. The membrane shall consist of waterproof paper or plastic sheets conforming to ASTM C 171, Sheet Materials for Curing Concrete, or 15-pound roofing felt conforming to ASTM D 226, D 250 or D 227, or Federal Specification UUB790, Building Paper, Vegetable Fiber: (Kraft Water-proofed, Water Repellent and Fire-resistant) Type 1, Grade B. The sheets shall be securely fastened to the subfloor. 3. Regardless of the provisions of Subsections 6.1 and 6.1 in Section 6 rela- ting to applicator qualifications and warranty in Bulletin No. 65, these sub- sections are omitted from these regulations. SECTION 84. The previously enacted amendment of UBC Section 4501 which added a paragraph at the end is amended to read: For the purpose of this chapter, the "Highway Line" defined in Ordinanee Pie. 1494 Title 22, of the Los Angeles County Code entitled "The Zoning Ordinance" shall-be deemed to be the street property line, and a line on the street side 12 feet from said building line shall be deemed to be • the curb line. The area on the highway or street side of the highway line shall, for the purposes of this chapter, be deemed to be public property. SECTION 85. Section 4508, which was added to the UBC by a previously enacted amendment, is amended to read: Section 4508 - Overhead structures as defined in Section 444 16.04.160 of 50 QFdinasee Ole. 3597 Title 16 of the Los Angeles County Code entitled "Highway Permit Ordinance" may project beyond a street property line or building line as provided in a permit issued by the Road Commissioner pursuant to Section 44; 16.06.010 of said Ordinance Ns, 9 Title 16. SECTION 86. The previously enacted amendment to item 2 of UBC Appendix Chapter 7, Division 1, subsection 713(a) is relocated to item 2, of UBC subsection 5603(a). SECTION 87. The previously enacted amendments to UBC Appendix Chapter 7, Division 1, subsection 714(8) are relocated to UBC subsection 5604(g). SECTION 88. The last paragraph of subsection 6202 of Title 26 of the Los Angeles County Code is amended to read: Where signs are illuminated by electric lighting, a separate Electrical Permit shall be obtained as required by the Electrical Code, QrMRa^^^ Title 27 of the Los Angeles County Code. SECTION 89. The last paragraph of Section 6710 of Title 26 of the Los • Angeles County Code is amended to read: Locking devices installed on sliding glass doors providing the exit required by section 3303 or the emergency egfess escape or rescue required by section 1204 shall be releasable from the inside without the use of a key, tool or excessive force. SECTION 90. Item 5 of Section 6808 of Title 26 of the Los Angeles County Code is amended to read: 5. If the proposed use is prohibited by ° a;RaRee -1494 Title 22 of the Los • Angeles Count y Code or any other land use ordinance. SECTION 91. Section 6903 of Title 26 of the Los Angeles County Code is amended to read: Permit Required - Sec. 6903. A trailer coach shall not be used, maintained or occupied contrary to the provisions of this chapter and the applicable 51 state laws and regulations., Before using a trailer coach for living or sleeping purposes a person shall first obtain a permit to do so from the county engineer. In any case to which the time during which a trailer coach may be so used is limited by the provisions of GFd!AaRce Pie 104T entitled .The ZOR49.0FdiRaAee . Title 22 of Los Angeles County Code, The Planning and Zoning Code, adopted September 12, 1927, the County engineer shall issue a permit good for the same length of time., Otherwise he shall issue a permit which shall be valid until revoked. SECTION 92. Item 4 of section 6904 of Title 26 of the Los Angeles County Code is amended to read: 4. State that (a) any sanitary facilities of the trailer coach will be sealed so that they cannot be used on the property or (b) the sewage dispo- sal system for the trailer coach will comply with the Plumbing Code, QrdlAanre lie 2269 Title 28 of the Los Angeles County Code and other pertinent local and state regulations governing plumbing for trailers. 0 SECTION 93. Section 7002 of Title 26 of the Los Angeles County Code is amended by adding or amending the following definitions: EROSION is the wearing away of the ground surface as a result of the move- ment of wind, water and/or ice. KEY is a designed compacted fill placed to a trench excavated to earth material beneath the toe of a proposed fill slope. SLOPE is an inclined ground surface the inclination of which 1s expressed as a ratio of horizontal distance to vertical distance. • SOIL TESTING AGENCY is an agency regularly engaged in the testing of soils and rock under the direction of a civil engineer experienced In soil eaechanics testing (a soil eAgineeF+. 52 TERRACE is a relatively level step constructed in the face of a graded slope surface for drainage and maintenance purposes. SECTION 94. Exception 2 to Section 7003 of Title 26 of the Los Angeles County Code is amended to read: 2. A fill not intended to support structures and which does not obstruct a drainage course if such fill J~j is placed on natural grade that has a slope not steeper than thfee five horizontal to one vertical and is less than one foot deep, arm or %(b) is less than 3 feet in depth at its deepest point, measured vertically upward from natural grade to the surface of the fill, and does not exceed 50 cubic yards, or % (c) does not exceed 20 cubic yards on any one lot. SECTION 95. Item 12 of Subsection 7005(b) is amended by adding a second sentence to read: Suitable access shall be provided to permit proper cleaning and main- tenance. • SECTION 96. The first sentence of Subsection 7015(a) of Title 26 of the Los Angeles County Code is amended to read: Sec. 7015(a) Maximum Slope - Cuts shall not be steeper in slope than 0" aAd one-ha~€ two horizontal to one vertical unless the owner furnishes a soils engineering or an engineering geology report, or both, conforming with the requirements of Chapter 3, stating that the site has been investigated and giving an opinion that a cut at a steeper slope will be stable and not create a hazard to public or private property. • SECTION 97. Subsection 7016(b) of Title 26 of the Los Angeles County Code is amended by adding the following immediately after the second sentence of said subsection: 53 The bench under the toe of a fill on a slope steeper than five to one shall be at least 10 feet wide. The area beyond the toe of fill shall be sloped for sheet overflow or a paved drain shall be provided When fill is. to be placed over a cut, the bench under the toe of fill shall be at least 10 feet wide but the cut shall be made before placing the fill and before acceptance by the geotechnical enqineer or engineering geologist or both as a suitable foundation for fill. SECTION 98. Subsection 7016(h) of Title 26 of the Los Angeles County Code is amended to read: (h) Testing of Fills - Sufficient tests of the fill soils shall be made to determine the density thereofr sts- shall be as 3 One test at the leeatlen ef the final fill slepe feF each building site (let) in each fBUF feet Yeptlea! 14ft er portion theFeef, • s, «ieient test of fill shall and to verify compliance of the sGils be fnade soil properties with the design requirements including soil types and shear strengths in accordance with the standards established by the Building Official. The results of such testing shall be included in the reports required by this chapter. SECTION 99. Section 7018 of Title 26 of the Los Angeles County Code is • amended by adding subsection (h) to read: (h) Interceptor Drains - Paved interceptor drains shall be installed along the top of all cut slopes where the height of the cut is greater than 5 feet measured vertically. Interceptor drains shall be paved with a minimum of 3 inches of concrete or gunite and reinforced as required 54 for drainage terraces. They shall have a minimum depth of 12 inches and a minimum paved width of 30 inches measured horizontally across the drain. The slope of drain shall be approved by the building official. SECTION 100. Subsection 7018(d) of Title 26 of the Los Angeles County Code is amended to read: (d) Drainage Terraces Required - The requirements for drainage terraces shall apply to all cut or fill slopes steeper than three horizontal to one vertical. Cut or fill slopes more than 30 feet in height and = t slopes Fnepe thaR 49 feet 4n height shall have drainage terraces provided at intervals not exceeding 25 feet except that where only one terrace is required, it shall be at midheight. Such terraces shall be not less than 8' feet in width (measured horizontally from the outside edge) except where the total slope height exceeds 100, one terrace near midheight shall be not less than 20 feet in width (measured horizontally from the outside edge). For cut and fill slopes greater than 120 feet in height design of drainage • devices and terraces may be submitted by the civil engineer and approved by the building officia1._For slopes not steeper than three horizontal to one vertical, the building official may require the design of drainage devices to be submitted. Suitable access shall be provided to permit proper cleaning and maintenance. SECTION 101. The first sentence of Subsection 7018(e) of Title 26 of the Los Angeles County Code is amended to read: (e) Drainage Terraces Construction - Drainage terraces shall have 0 a longitudinal grade of not less than €euf five percent nor more than twelve percent and a minimum depth of one foot at the flow line. 55 SECTION 102. Subsection 7018(f) of Title 26 of the Los Angeles County Code is amended by adding a second paragraph to read: Swales used for slope protection shall conform with subsection (h). Berms utilized for slope protection shall be not less than 12 inches above the level of the pad and shall slope back at least 4 feet from the top of the slope. SECTION 103. Section 7019 is amended by retitling the section, changing existing subsections (a) through (e) to become subsections (b) through (f) respectively and adding new subsections (a) and (g) as follows: Sec. 7019 Erosion Control (a) Slopes - the faces of cut and fill slopes shall be prepared and maintained to control against ero- sion. This control must consist of effective planting as described elsewhere in this section or other devices satisfactory to the building official. (g) Other devices - Where necessary, check dams, cribbing, riprap or • other devices or methods shall be employed to control erosion and provide safety. SECTION 104. Item 3 of the last paragraph of section 9603 of Title 26 of the Los Angeles County Code is amended to read: 3. The area of reinforcing steel is less than 50 percent of that required in Subdivision 3.4B of Subsection {4} (h) of Section 2414 2407, entitled " Design, General Requirements", of this code. SECTION 105. Section 9605 of Title 26 of the Los Angeles County Code • is amended by adding the following paragraph immediately after the first paragraph: The owner of a building within the scope of this chapter shall comply with the requirements set forth above by submitting to the County Engineer for review within the stated time limits: 56 SECTION 106. Subsection 9606(f) of Title 26 of the Los Angeles County Code is amended to read: (f) Enforcement - If the owner or other person in charge or control of the subject building fails to comply with any order issued by the County Engineer pursuant to this chapter within any of the time limits set forth in section 9605, the County Engineer shall verify that the record owner of this building has been properly served. If the order has been served on the record owner, the County Engineer may order that the entire building be vacated and that the building remain vacated until such order has been complied with. If compliance with such order has not been accomplished within 90 days after the date the building has been ordered vacated or such additional time as may have been granted by the Board of Appeals, the county engineer may order its demolition in accordance with 2-1 the provisions of Section 203(a) of this code. SECTION 107. Subsection 9608(c) of Title 26 of the Los Angeles County Code • is amended to read: (c) Anchorage and Interconnection - Anchorage and interconnection of all parts, portions and elements of the structure shall be analyzed and designed for lateral forces in accordance with STABLE NO 23i of this code afld the equation Fp=ICp SWp as medified by set forth in Table No. 96-E and Table No. 96-F. Minimum anchorage of masonry walls to each floor or roof shall resist a minimum force 200 pounds per lineal foot acting normal to the wall at the level of the floor or roof. • SECTION 108. The first paragraph of Subdivision 9608(f)3 of Title 26 of the Los Angeles County Code is amended to read: 3. Unreinforced Masonry Walls - Unreinforced masonry walls shall be analyzed to ensure their capability of resisting superimposed vertical 57 loads in addition to the seismic forces required by this chapter. Such walls shall meet the minimum requirements set forth in Section 2406 entitled "Allowable Stresses" Section 244.6 2407 entitled "GeReFal Design, General Requirements," and Section 241-7 2409 entitled "Design, Reinforced Masonry Bes49n° of this code. The 50 percent increase in the seismic force factor for shear walls as specified in Table Na. 24-11 Section 2407(h) 4F(i) of this code may be omitted in the computation of seismic loads to existing shear walls. SECTION 109. Subdivision 9608(g)1 of Title 26 of the Los Angeles County Code is amended to read: (g) Combinat,on of Vertical and Seismic Forces - 1. New materials. All new materials introduced into the structure to meet the requirements of this section which are subject to combined vertical and horizontal forces shall comply with Section 2312(j) 2303(f) f of this code. SECTION 110. The last sentence of Subdivision 9608(g)2 is amended to read: • The stresses in members due only to seismic and dead loads shall not exceed the values permitted by Section 2303+ of this code. SECTION 111. The second paragraph of Subsection 9609(b) of Title 26 of the Los Angeles County Code is deleted. SECTION 112. The third paragraph of Subdivision 9610(b)1 is amended to read: When access to the exterior face of the masonry wall is prevented by proximity of an existing building, wall anchors conforming to Items nos. 5 • and 6 in Table 96-I may be used. SECTION 113. Subdivision 9610(b)3 of Title 26 of the Los Angeles County Code is amended to read: 3. Where trusses and beams other than rafters or joists are supported on masonry, independent secondary columns shall be installed to support vertical loads of the roof or floor members. 58 5. All deteriorated mortar joints in unreinforced masonry walls shall be pointed with Type S or N mortar. Prior to any pointing, the wall surface must be s*Rd of wateF blasted raked and cleaned to remove loose and deteriorated mortar. A44 pF-epar-atieA af►9 Pointing shall be done under the continuous inspection of a registered special masonry or concrete inspector. At the conclusion of the project, the inspector shall submit a written report to the county engineer setting forth the portion of work inspected. SECTION 115. Subsection 9610(c)6 of. Title 26 of the Los Angeles County 6. The type of interior wall surfaces and ceilings, and w`etheF if u SECTION 114. Subdivision 9610(b)5 of Title 26 of the Los Angeles County Code is amended to read: is amended to read: reinstalling or anchoring tie Eeilieg of existing plaster is necessary. SECTION 116. Table No. 96-F is amended by adding the footnote references, to read: TABLE NO. 96-F HORIZONTAL FORCE FACTOR Cp. FOR PARTS OR PORTIONS OF BUILDINGS OR OTHER STRUCTURES • PART OR PORTION OF BUILDINGS Exterior bearing and nonbearing walls; interior bearing walls and partitions; interior nonbearing walls and partitions over 10 feet in height; masonry fences over 6 feet in height. Cantilever parapet and other cantilever walls, except retaining walls. DIRECTION VALUE OF FORCE OF CP Normal-to-flat 0.20 surface Normal-to-flat 1.00 surface Exterior and interior ornamentations and appendages. Any direction 1.00 59 Table 96-F cont. ' PART OR PORTION DIRECTION VALUE OF BUILDINGS OF FORCE OF Cp When connected to or a part of building Any direction 0.20 JL,L41 towers, tanks, towers and tanks plus contents, racks over 8 feet 3 inches in height plus contents, chimneys, smokestacks and penthouses. When connected to or a part of a building: Any horizontal 0.20 Rigid and rigidly mounted equipment and direction machinery not required for continued operation of essential occupancies. Tanks plus effective contents resting on Any direction 0.12 the ground. Floors and roofs acting as diaphragms. In the plane of 0.12 the diaphragm Prefabricated structural elements, other Any horizontal 0.30 than walls, with force applied at center direction of gravity of assembly. Connections for exterior panels or elements. Any direction 2.00 • SECTION 117. Note 3 to Table No. 96-H of Title 26 of the Los Angeles County Code is amended to read: 3. Stresses given may be increased for combination loads as specified in Section 9608(g)2. SECTION 118. Table No. 96-I of Title 26 of the Los Angeles County Code is amended to read: • 60 TABLE NO. 96-I ALLOWABLE VALUES OF NEW MATERIALS USED IN CONJUNCTION WITH EXISTING CONSTRUCTION NEW MATERIALS OR CONFIGURATION OF MATERIALS (1) 1. HORIZONTAL DIAPHRAGMS Plywood sheathing applied directly over existing sheathing with ends of plywood sheets bearing on joists or rafters and edges of plywood located on center of individual sheathing boards. 2. SHEAR WALLS a. Plywood sheathing applied directly over existing wood studs. No value shall oe given to plywood applied over existing plaster or wood sheathing. 0 b. Dry wall or plaster applied directly over existing wood studs. C. Dry wall or plaster applied to plywood sheathing over existing wood studs. 3. SHEAR BOLTS Shear bolts and shear dowels embedded a minimum of 8 inches into unreinforced masonry walls. Bolt centered in 2S1-inch diameter hole with dry-pack or an approved nonshrink grout around circumference of bolt or dowel. (1)(3) 4. TENSION BOLTS Tension bolts and tension dowels extending entirely through unreinforced masonry walls secured with bearing plates on far side of wall with at least 30 square inches of area. (2)(3) ALLOWABLE VALUES Same as specified in Table No. 25-J of this code for blocked diaphragms. Same as values specified in Table No. 25-K for shear walls. 75 percent of the values specified in Table No. 47-I. 33 1/3 percent of the values specified in Table No. 47-I. 4GG 133 percent of the values for plain solid masonry specified in Table No. 24-G-J. No values larger than those given for 3/4-inch bolts shall be used. 1,200 pounds per bolt or dowel. 61